STRUCTURED ASSET SECURITIES CORP
8-K, 1999-03-12
ASSET-BACKED SECURITIES
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                       SECURITIES AND EXCHANGE ACT OF 1934


                Date of Report (Date of earliest event reported)
                                February 26, 1999


         STRUCTURED ASSET  SECURITIES  CORPORATION (as Depositor under the Trust
         Agreement,  dated as of February 1, 1999, providing for the issuance of
         Structured   Asset   Securities   Corporation   Mortgage   Pass-Through
         Certificates, Series 1999-ALS1)

                     Structured Asset Securities Corporation
              ----------------------------------------------------
             (Exact Name of Registrant as Specified in its Charter)



         Delaware                     333-68513               74-2440850
 ---------------------------         -----------          -------------------
 State or Other Jurisdiction         (Commission           (I.R.S. Employer
     Of Incorporation)               File Number)         Identification No.)



        200 Vesey Street
       New York, New York                                        10285
  ------------------------------                                --------
 (Address of Principal Executive                               (Zip Code)
            Offices)


       Registrant's telephone number, including area code: (212) 526-5594

                                    No Change
           -----------------------------------------------------------
          (Former Name or Former Address, if Changed Since Last Report)


<PAGE>

     Item 5.  Other Events
              ------------

     The  Registrant   registered   issuances  of  Structured  Asset  Securities
Corporation Mortgage Pass-Through  Certificates on a delayed or continuous basis
pursuant to Rule 415 under the  Securities  Act of 1933, as amended (the "Act"),
by a Registration  Statement on Form S-3 (Registration  File No. 333-68513) (the
"Registration   Statement").   Pursuant  to  the  Registration  Statement,   the
Registrant issued $284,147,098 in aggregate principal amount of Class 1-A, Class
1-AP,  Class 2-A, Class 2-AP,  Class 2-AX,  Class 3-A,  Class 3-AP,  Class 3-AX,
Class B1, Class B2, Class B3 and Class R Certificates  of its  Structured  Asset
Securities Corporation Mortgage Pass-Through  Certificates,  Series 1999-ALS1 on
February 26, 1999.  This Current Report on Form 8-K is being filed to satisfy an
undertaking,  contained in the definitive  Prospectus dated January 15, 1999, as
supplemented  by  the  Prospectus   Supplement  dated  February  24,  1999  (the
"Prospectus  Supplement"),  to file a copy of the Trust  Agreement  (as  defined
below) executed in connection with the issuance of the  Certificates,  a form of
which was filed as an exhibit to the Registration Statement.

     The  Certificates  were issued  pursuant to a Trust  Agreement  (the "Trust
Agreement"), attached hereto as Exhibit 4.1, dated as of February 1, 1999, among
Structured Asset Securities Corporation, as depositor (the "Depositor"),  Aurora
Loan Services Inc., as master servicer, and The Chase Manhattan Bank, as trustee
(the "Trustee"). The "Certificates" consist of the following classes: Class 1-A,
Class 1-AP,  Class 2-A, Class 2-AP,  Class 2-AX,  Class 3-A,  Class 3-AP,  Class
3-AX,  Class B1,  Class B2,  Class B3, Class B4, Class B5, Class B6 and Class R.
The Certificates  evidence all the beneficial ownership interest in a trust fund
(the  "Trust  Fund")  that  consists  primarily  of three  pools of fixed  rate,
conventional,  first lien residential mortgage loans (the "Mortgage Loans") with
an aggregate  outstanding principal balance of $288,773,612.87 as of February 1,
1999, together with certain other assets.  Capitalized terms used herein and not
otherwise  defined  shall  have  the  meanings  assigned  to them  in the  Trust
Agreement.



<PAGE>


     Item 7. Financial Statements; PRO FORMA Financial Information and Exhibits

(a)  Not applicable.

(b)  Not applicable.

(c)  Exhibits:

     1.1   Terms Agreement,  dated February 24, 1999,  between  Structured Asset
           Securities Corporation and Lehman Brothers Inc.

     4.1   Trust Agreement, dated as of February 1, 1999, among Structured Asset
           Securities Corporation,  as Depositor,  Aurora Loan Services Inc., as
           Master Servicer, and The Chase Manhattan Bank, as Trustee.

     99.1  Mortgage Loan Sale and Assignment Agreement,  dated as of February 1,
           1999,  between Lehman Capital, A Division of Lehman Brothers Holdings
           Inc., as Seller,  and Structured  Asset  Securities  Corporation,  as
           Purchaser.

     99.2  Servicing  Agreement,  dated as of February 1, 1999,  between  Lehman
           Capital, A Division of Lehman Brothers Holdings Inc., and Aurora Loan
           Services Inc., as servicer.

     99.3* Flow  Servicing  Agreement,  dated as of September  1, 1997,  between
           Lehman  Capital,  A Division of Lehman  Brothers  Holdings  Inc., and
           Aurora Loan Services Inc., as servicer.





<PAGE>


                                   SIGNATURES


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

                                STRUCTURED ASSET SECURITIES
                                  CORPORATION



                                By:  /s/Joseph J. Kelly          
                                     ----------------------------
                                     Name:  Joseph J. Kelly
                                     Title:  Authorized Signatory



Dated:  March 12, 1999



<PAGE>



                                  EXHIBIT INDEX
                                  -------------



Exhibit No.                     Description                       Page No.
- -----------                     -----------                       --------


1.1                   Terms Agreement, dated February 24,
                      1999,   between   Structured  Asset
                      Securities  Corporation  and Lehman
                      Brothers Inc.

4.1                   Trust   Agreement,   dated   as  of
                      February 1, 1999,  among Structured
                      Asset  Securities  Corporation,  as
                      Depositor,   Aurora  Loan  Services
                      Inc., as Master  Servicer,  and The
                      Chase Manhattan Bank, as Trustee.

99.1                  Mortgage  Loan Sale and  Assignment
                      Agreement,  dated as of February 1,
                      1999,  between  Lehman  Capital,  A
                      Division    of   Lehman    Brothers
                      Holdings   Inc.,  as  Seller,   and
                      Structured     Asset     Securities
                      Corporation, as Purchaser.

99.2                  Servicing  Agreement,  dated  as of
                      February  1, 1999,  between  Lehman
                      Capital,   A  Division   of  Lehman
                      Brothers  Holdings Inc., and Aurora
                      Loan Services Inc., as servicer.

99.3*                 Flow Servicing Agreement,  dated as
                      of  September   1,  1997,   between
                      Lehman   Capital,   A  Division  of
                      Lehman Brothers  Holdings Inc., and
                      Aurora  Loan   Services   Inc.,  as
                      servicer.




____________________
  *  Incorporated  by reference to the  Depositor's  Current  Report on Form 8-K
     dated March 30, 1998, filed with the Securities and Exchange  Commission on
     April 14, 1998 (File No. 333-47499).




                     STRUCTURED ASSET SECURITIES CORPORATION
              MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 1999-ALS1



                                 TERMS AGREEMENT
                                 ---------------


                                                       Dated:  February 24, 1999



To:  Structured  Asset  Securities  Corporation,  as  Depositor  under the Trust
     Agreement dated as of February 1, 1999 (the "Trust Agreement").

Re:  Underwriting  Agreement  Standard  Terms  dated as of April  16,  1996 (the
     "Standard Terms," and together with this Terms Agreement, the "Agreement").

Series Designation:  Series 1999-ALS1.
- ------------------

Terms  of  the  Series  1999-ALS1  Certificates:   Structured  Asset  Securities
- -----------------------------------------------
Corporation,  Series 1999-ALS1 Mortgage  Pass-Through  Certificates,  Class 1-A,
Class 1-AP,  Class 2-A, Class 2-AP,  Class 2-AX,  Class 3-A,  Class 3-AP,  Class
3-AX,  Class B1,  Class B2,  Class B3,  Class B4, Class B5, Class B6 and Class R
(the  "Certificates")  will evidence,  in the aggregate,  the entire  beneficial
ownership interest in a trust fund (the "Trust Fund"). The primary assets of the
Trust  Fund  consist  of two  pools  of fixed  rate,  conventional,  first  lien
residential  mortgage  loans (the "Mortgage  Loans").  Only the Class 1-A, Class
1-AP,  Class 2-A, Class 2-AP,  Class 2-AX,  Class 3-A,  Class 3-AP,  Class 3-AX,
Class  B1,  Class  B2,  Class  B3  and  Class  R   Certificates   (the  "Offered
Certificates") are being sold pursuant to the terms hereof.

Registration Statement:  File Number 333-68513.
- ----------------------

Certificate  Ratings: It is a condition of Closing that at the Closing Date: the
- --------------------
Class 1-A, Class 2-A and Class 3-A Certificates be rated "AAA" by each of Duff &
Phelps Credit Rating Co.  ("DCR"),  Fitch IBCA, Inc.  ("Fitch"),  and Standard &
Poor's Rating Services,  a division of The McGraw-Hill  Companies,  Inc. ("S&P,"
which together with DCR and Fitch, the "Rating Agencies"); the Class 1-AP, Class
2-AP, Class 2-AX, Class 3-AP and Class 3-AX  Certificates be rated "AAA" by each
of DCR and Fitch and "AAAr" by S&P; the Class B1  Certificates  be rated "AA" by
each of DCR, Fitch and S&P; the Class B2  Certificates  be rated "A" by DCR; and
the Class B3 Certificates be rated "BBB" by DCR.

Terms of Sale of Offered  Certificates:  The Depositor  agrees to sell to Lehman
- --------------------------------------
Brothers Inc. (the  "Underwriter")  and the Underwriter  agrees to purchase from
the Depositor,  the Offered Certificates in the principal amounts and prices set
forth  on  Schedule  1  annexed  hereto.  The  purchase  price  for the  Offered
Certificates shall be the Purchase Price Percentage set forth in Schedule 1 plus
accrued  interest at the initial  interest rate per annum from and including the
Cut-off Date up to, but not including, the Closing Date.

The Underwriter  will offer the Offered  Certificates to the public from time to
time in negotiated  transactions or otherwise at varying prices to be determined
at the time of sale.

Cut-off Date:  February 1, 1999.
- ------------

Closing Date:  10:00 A.M.,  New York time, on or about February 26, 1999. On the
- ------------
Closing  Date,  the  Depositor  will  deliver  the Offered  Certificates  to the
Underwriter against payment therefor for the account of the Underwriter.



<PAGE>



     If the foregoing is in accordance with your understanding of our agreement,
please sign and return to us a counterpart  hereof,  whereupon  this  instrument
along  with  all  counterparts  will  become a  binding  agreement  between  the
Depositor and the Underwriter in accordance with its terms.

                                   LEHMAN BROTHERS INC.



                                   By:  /s/Stanley P. Labanowski         
                                        ---------------------------------
                                        Name:   Stanley P. Labanowski
                                        Title:  Vice President


         Accepted:

STRUCTURED ASSET SECURITIES
  CORPORATION


By:  /s/Joseph J. Kelly          
     ----------------------------
     Name:   Joseph J. Kelly
     Title:  Vice President



<PAGE>



                                   Schedule 1

                
                                          Certificate              Purchase
                Initial Certificate        Interest                  Price
Class           Principal Amount(1)          Rate                 Percentage

Class 1-A          $152,951,000              6.90%                100.70312%
Class 1-AP              933,405              0.00%                 60.00000%
Class 2-A            76,965,000              6.75%                100.41900%
Class 2-AP              784,915              0.00%                 70.00000%
Class 2-AX                  (2)              0.15%                  0.37500%
Class 3-A            33,914,000              6.55%                100.29000%
Class 3-AP              844,678              0.00%                 65.00000%
Class 3-AX                  (2)              0.35%                  0.87500%
Class B1              8,662,000              6.90%                 99.20042%
Class B2              6,351,000              6.90%                 97.49896%
Class B3              2,741,000              6.90%                 91.58269%
Class R                     100              6.90%                100.00000%

- ---------------
1)   Approximate.
2)   The  Class  2-AX and  Class  3-AX  Certificates  will  have no  Certificate
     Principal  Amount  and  will  accrue  interest  on a  calculated  aggregate
     National Amount described in the Prospectus Supplement.



================================================================================






             STRUCTURED ASSET SECURITIES CORPORATION, as Depositor,

                 AURORA LOAN SERVICES INC., as Master Servicer,

                                       and

                      THE CHASE MANHATTAN BANK, as Trustee

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

                                 TRUST AGREEMENT

                          Dated as of February 1, 1999

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



                     STRUCTURED ASSET SECURITIES CORPORATION

                       MORTGAGE PASS-THROUGH CERTIFICATES

                                SERIES 1999-ALS1





================================================================================
<PAGE>
                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----

                                    ARTICLE I

                                   DEFINITIONS

Section 1.01.   Definitions....................................................2
Section 1.02.   Calculations Respecting Mortgage Loans........................29

                                   ARTICLE II

                 DECLARATION OF TRUST; ISSUANCE OF CERTIFICATES

Section 2.01.   Creation and Declaration of Trust Fund;
                    Conveyance of Mortgage Loans..............................29
Section 2.02.   Acceptance of Trust Fund by Trustee:
                    Review of Documentation for Trust Fund....................32
Section 2.03.   Representations and Warranties of the Depositor...............33
Section 2.04.   Discovery of Breach...........................................35
Section 2.05.   Repurchase, Purchase or Substitution of Mortgage Loans........35
Section 2.06.   Grant Clause..................................................36

                                   ARTICLE III

                                THE CERTIFICATES

Section 3.01.   The Certificates..............................................36
Section 3.02.   Registration..................................................37
Section 3.03.   Transfer and Exchange of Certificates.........................37
Section 3.04.   Cancellation of Certificates..................................40
Section 3.05.   Replacement of Certificates...................................40
Section 3.06.   Persons Deemed Owners.........................................40
Section 3.07.   Temporary Certificates........................................40
Section 3.08.   Appointment of Paying Agent...................................41
Section 3.09.   Book-Entry Certificates.......................................41

                                   ARTICLE IV

                        ADMINISTRATION OF THE TRUST FUND

Section 4.01.   Collection Account............................................43
Section 4.02.   Application of Funds in the Collection Account................44
Section 4.03.   Reports to Certificateholders.................................46
Section 4.04.   Certificate Account...........................................49

                                    ARTICLE V

                    DISTRIBUTIONS TO HOLDERS OF CERTIFICATES

Section 5.01.   Distributions Generally.......................................50
Section 5.02.   Distributions from the Certificate Account....................50
Section 5.03.   Allocation of Realized Losses.................................55
Section 5.04.   Advances by Master Servicer and Trustee.......................57
Section 5.05.   Compensating Interest Payments................................58

                                   ARTICLE VI

                    CONCERNING THE TRUSTEE; EVENTS OF DEFAULT

Section 6.01.   Duties of Trustee.............................................58
Section 6.02.   Certain Matters Affecting the Trustee.........................60
Section 6.03.   Trustee Not Liable for Certificates...........................61
Section 6.04.   Trustee May Own Certificates..................................62
Section 6.05.   Eligibility Requirements for Trustee..........................62
Section 6.06.   Resignation and Removal of Trustee............................62
Section 6.07.   Successor Trustee.............................................63
Section 6.08.   Merger or Consolidation of Trustee............................63
Section 6.09.   Appointment of Co-Trustee,
                    Separate Trustee or Custodian.............................64
Section 6.10.   Authenticating Agents.........................................65
Section 6.11.   Indemnification of Trustee....................................66
Section 6.12.   Fees and Expenses of Trustee..................................66
Section 6.13.   Collection of Monies..........................................67
Section 6.14.   Events of Default; Trustee To Act;
                    Appointment of Successor..................................67
Section 6.15.   Additional Remedies of Trustee Upon Event of Default..........70
Section 6.16.   Waiver of Defaults............................................71
Section 6.17.   Notification to Holders.......................................71
Section 6.18.   Directions by Certificateholders and Duties of
                    Trustee During Event of Default...........................71
Section 6.19.   Action Upon Certain Failures of the Master Servicer and
                    Upon Event of Default.....................................71
Section 6.20.   Preparation of Tax Returns and Other Reports..................71

                                   ARTICLE VII

                   PURCHASE AND TERMINATION OF THE TRUST FUND

Section 7.01.   Termination of Trust Fund Upon Repurchase or
                    Liquidation of All Mortgage Loans.........................72
Section 7.02.   Procedure Upon Termination of Trust Fund......................73
Section 7.03.   Additional Trust Fund Termination Requirements................74

                                  ARTICLE VIII

                          RIGHTS OF CERTIFICATEHOLDERS

Section 8.01.   Limitation on Rights of Holders...............................75
Section 8.02.   Access to List of Holders.....................................75
Section 8.03.   Acts of Holders of Certificates...............................76

                                   ARTICLE IX

      ADMINISTRATION AND SERVICING OF MORTGAGE LOANS BY THE MASTER SERVICER

Section 9.01.   Duties of the Master Servicer.................................77
Section 9.02.   Master Servicer Fidelity Bond and
                    Master Servicer Errors and Omissions Insurance Policy.....77
Section 9.03.   Master Servicer's Financial Statements and
                    Related Information.......................................78
Section 9.04.   Power to Act; Procedures......................................78
Section 9.05.   Servicing Agreements Between the Master Servicer and
                    Servicers; Enforcement of Servicers' Obligations..........79
Section 9.06.   Collection of Taxes, Assessments and Similar Items............80
Section 9.07.   Termination of Servicing Agreements; Successor Servicers......80
Section 9.08.   Master Servicer Liable for Enforcement........................81
Section 9.09.   No Contractual Relationship Between Servicers and
                    Trustee or Depositor......................................81
Section 9.10.   Assumption of Servicing Agreement by Trustee..................81
Section 9.11.   "Due-on-Sale" Clauses; Assumption Agreements..................82
Section 9.12.   Release of Mortgage Files.....................................82
Section 9.13.   Documents, Records and Funds in Possession of
                    Master Servicer To Be Held for Trustee....................83
Section 9.14.   Representations and Warranties of the Master Servicer.........84
Section 9.15.   Closing Certificate and Opinion...............................86
Section 9.16.   Standard Hazard and Flood Insurance Policies..................86
Section 9.17.   Presentment of Claims and Collection of Proceeds..............87
Section 9.18.   Maintenance of the Primary Mortgage Insurance Policies........87
Section 9.19.   Trustee To Retain Possession of
                    Certain Insurance Policies and Documents..................87
Section 9.20.   Realization Upon Defaulted Mortgage Loans.....................88
Section 9.21.   Compensation to the Master Servicer...........................88
Section 9.22.   REO Property..................................................88
Section 9.23.   [Omitted].....................................................89
Section 9.24.   Reports to the Trustee........................................89
Section 9.25.   Annual Officer's Certificate as to Compliance.................89
Section 9.26.   Annual Independent Accountants' Servicing Report..............90
Section 9.27.   Merger or Consolidation.......................................91
Section 9.28.   Resignation of Master Servicer................................91
Section 9.29.   Assignment or Delegation of Duties by the Master Servicer.....91
Section 9.30.   Limitation on Liability of the Master Servicer and Others.....91
Section 9.31.   Indemnification; Third-Party Claims...........................92

                                    ARTICLE X

                              REMIC ADMINISTRATION

Section 10.01.  REMIC Administration..........................................92
Section 10.02.  Prohibited Transactions and Activities........................94
Section 10.03.  Indemnification with Respect to
                    Certain Taxes and Loss of REMIC Status....................94
Section 10.04.  REO Property..................................................95

                                   ARTICLE XI

                            MISCELLANEOUS PROVISIONS

Section 11.01.  Binding Nature of Agreement; Assignment.......................96
Section 11.02.  Entire Agreement..............................................96
Section 11.03.  Amendment.....................................................96
Section 11.04.  Voting Rights.................................................97
Section 11.05.  Provision of Information......................................97
Section 11.06.  Governing Law.................................................98
Section 11.07.  Notices.......................................................98
Section 11.08.  Severability of Provisions....................................98
Section 11.09.  Indulgences; No Waivers.......................................98
Section 11.10.  Headings Not To Affect Interpretation.........................98
Section 11.11.  Benefits of Agreement.........................................98
Section 11.12.  Special Notices to the Rating Agencies........................99
Section 11.13.  Counterparts.................................................100
Section 11.14.  Transfer of Servicing........................................100

<PAGE>
                                   ATTACHMENTS

Exhibit A     Forms of Certificates
Exhibit B-1   Form of Initial Certification
Exhibit B-2   Form of Interim Certification
Exhibit B-3   Form of Final Certification
Exhibit B-4   Form of Endorsement
Exhibit C     Request for Release of Documents and Receipt
Exhibit D-l   Form of Residual Certificate Transfer Affidavit (Transferee)
Exhibit D-2   Form of Residual Certificate Transfer Affidavit (Transferor)
Exhibit E     Servicing Agreement
Exhibit F     Form of Rule 144A Transfer Certificate
Exhibit G     Form of Purchaser's Letter for Institutional Accredited Investors
Exhibit H     Form of ERISA Transfer Affidavit
Exhibit I     Monthly Remittance Advice
Exhibit J     Monthly Electronic Data Transmission
Exhibit K     Custodial Agreement

Schedule A    Mortgage Loan Schedule
Schedule B    Principal Amount Schedules

<PAGE>
     This TRUST AGREEMENT, dated as of February 1, 1999 (the "Agreement"), is by
and among STRUCTURED ASSET SECURITIES  CORPORATION,  a Delaware corporation,  as
depositor (the "Depositor"),  AURORA LOAN SERVICES INC., as master servicer (the
"Master Servicer"), and THE CHASE MANHATTAN BANK, a New York banking corporation
with its main office in New York, New York, as trustee (the "Trustee").

                              PRELIMINARY STATEMENT

     The  Depositor  has  acquired  the Mortgage  Loans from Lehman  Capital,  A
Division of Lehman  Brothers  Holdings Inc. (the  "Seller"),  and at the Closing
Date is the owner of the Mortgage Loans and the other property being conveyed by
it to the Trustee for  inclusion  in the Trust Fund.  On the Closing  Date,  the
Depositor will acquire the  Certificates  from the Trust Fund, as  consideration
for its transfer to the Trust Fund of the Mortgage  Loans and the other property
constituting the Trust Fund. The Depositor has duly authorized the execution and
delivery of this  Agreement to provide for the  conveyance to the Trustee of the
Mortgage Loans and the other property constituting the Trust Fund. All covenants
and agreements made by the Depositor, the Master Servicer and the Trustee herein
with respect to the Mortgage Loans and the other property constituting the Trust
Fund are for the benefit of the Holders  from time to time of the  Certificates.
The Depositor and the Master Servicer are entering into this Agreement,  and the
Trustee  is  accepting  the Trust Fund  created  hereby,  for good and  valuable
consideration, the receipt and sufficiency of which are hereby acknowledged.

     As provided herein,  the Trustee shall elect that the Trust Fund be treated
for  federal  income  tax  purposes  as  comprising  two  real  estate  mortgage
investment  conduits  (each a "REMIC"  or, in the  alternative,   the Lower Tier
REMIC and the Upper Tier REMIC, respectively).  Each Certificate, other than the
Class R  Certificate,  represents  ownership of a regular  interest in the Upper
Tier  REMIC for  purposes  of the  REMIC  Provisions.  The  Class R  Certificate
represents ownership of the sole class of residual interest in each of the Lower
Tier REMIC and the Upper Tier REMIC for  purposes of the REMIC  Provisions.  The
Upper Tier REMIC  shall hold as assets  the  several  classes of  uncertificated
Lower Tier Interests set out below.

<PAGE>
<TABLE>
<CAPTION>

    Lower Tier Class                                         Initial Class Principal        Corresponding Class
       Designation                   Interest Rate                    Amount                 of Certificate(s)
    ----------------                 -------------           -----------------------        -------------------
<S>                                  <C>                     <C>                            <C>
Class LT1-A                              6.90%                     $152,951,000.00           Class 1-A
Class LT1-AP                             0.00                           933,405.00           Class 1-AP
Class LT 2-A                             6.75                        76,965,100.00           Class 2-A
       (1)                                                                                   Class 2-AX
       (2)                                                                                   Class R
Class LT2-AP                             0.00                           784,915.00           Class 2-AP
Class LT3-A                              6.55                        33,914,000.00           Class 3-A
       (3)                                                                                   Class 3-AX
Class LT3-AP                             0.00                           844,678.00           Class 3-AP
Class LTB-1                              6.90                         8,662,000.00           Class B-1
Class LTB-2                              6.90                         6,351,000.00           Class B-2
Class LTB-3                              6.90                         2,741,000.00           Class B-3
Class LTB-4                              6.90                         1,443,000.00           Class B-4
Class LTB-5                              6.90                           865,000.00           Class B-5
Class LTB-6                              6.90                         2,318,513.06           Class B-6
Class LTR                                (4)                               (4)                    (4)
</TABLE>
______________
     (1)  The Class  2-AX  Certificates  will be  entitled  to  receive  on each
          Distribution  Date to a specified  portion of the interest  payable on
          the Class LT2-A Interest.

     (2)  The Class R Certificate  will be entitled to receive $100 of principal
          plus  interest at the rate of 6.90% from amounts  payable with respect
          to the Class LT2-A Interest.

     (3)  The Class  3-AX  Certificates  will be  entitled  to  receive  on each
          Distribution  Date a specified  portion of the interest payable on the
          Class LT3-A Interest.

     (4)  The  Class  LTR does not have a stated  principal  amount  or a stated
          interest  rate.  Ownership of the Class LTR Interest will be evidenced
          by the Class R Certificate.

     The Lower Tier REMIC shall hold as assets all assets  included in the Trust
Fund other than the uncertificated Lower Tier Interests.

     Distributions  of principal  payments on each class of Lower Tier  Interest
for any  Distribution  Date  shall  correspond  to the  principal  distributions
required  to be  made  on  the  Corresponding  Class  of  Certificates  on  such
Distribution Date.  Realized Losses and Net Prepayment Interest Shortfalls as of
any  Distribution  Date  shall be  allocated  among the  classes  of Lower  Tier
Interests  in  the  same  manner  that  such  items  are  allocated   among  the
Corresponding Classes of Certificates.

     The  following  table  sets  forth the Class  designation,  Interest  Rate,
initial  Class  Principal  Amount  and  minimum  denomination  for each Class of
Certificates comprising the interests in the Trust Fund created hereunder.


<PAGE>
<TABLE>
<CAPTION>

                                                             Initial Class Principal
    Class Designation                Interest Rate                    Amount               Minimum Denominations
    -----------------                -------------           -----------------------       ---------------------
<S>                                  <C>                     <C>                           <C>
Class 1-A                                6.90%                     $152,951,000.00                 $100,000
Class 1-AP                               0.00                           933,405.00                  100,000
Class 2-A                                6.75                        76,965,000.00                  100,000
Class 2-AP                               0.00                           784,915.00                  100,000
Class 2-AX                               0.15                                  (1)               30,000,000(3)
Class 3-A                                6.55                        33,914,000.00                  100,000
Class 3-AP                               0.00                           844,678.00                  100,000
Class 3-AX                               0.35                                  (2)               20,000,000(3)
Class B1                                 6.90                         8,662,000.00                  100,000
Class B2                                 6.90                         6,351,000.00                  100,000
Class B3                                 6.90                         2,741,000.00                  100,000
Class B4                                 6.90                         1,443,000.00                  250,000
Class B5                                 6.90                           865,000.00                  250,000
Class B6                                 6.90                         2,318,513.06                  250,000
Class R                                  6.90                               100.00                      100
</TABLE>
______________
     (1)  The Class 2-AX  Certificates  will accrue interest on a Class Notional
          Amount equal,  as to any  Distribution  Date,  to the Class  Principal
          Amount of the Class 2-A Certificates immediately prior to such date.

     (2)  The Class 3-AX  Certificates  will accrue interest on a Class Notional
          Amount equal,  as to any  Distribution  Date,  to the Class  Principal
          Amount of the Class 3-A Certificates immediately prior to such date.

     (3)  In Notional Amount.

     As of the Cut-off  Date,  the  Mortgage  Loans had an  aggregate  Scheduled
Principal Balance of $288,773,612.87.

     In consideration of the mutual agreements herein contained,  the Depositor,
the Master Servicer and the Trustee hereby agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

     Section  1.01.  Definitions.  The following  words and phrases,  unless the
                     -----------
context otherwise requires, shall have the following meanings:

     Accepted  Servicing  Practices:  With  respect  to any  Mortgage  Loan,  as
     ------------------------------
applicable,  either (x) those customary mortgage servicing  practices of prudent
mortgage servicing institutions that service or master service mortgage loans of
the same type and quality as such  Mortgage Loan in the  jurisdiction  where the
related Mortgaged  Property is located,  to the extent applicable to the Trustee
or the Master Servicer or (y) as provided in the applicable Servicing Agreement,
to the extent applicable to the Servicer.

     Accountant: A person engaged in the practice of accounting who (except when
     ----------
this Agreement  provides that an Accountant must be Independent) may be employed
by or affiliated with the Depositor or an Affiliate of the Depositor.

     Accretion Directed Certificate: None.
     ------------------------------

     Accretion  Termination  Date:  The first  Distribution  Date  following the
     ----------------------------
Credit Support Depletion Date.

     Accrual  Amount:  As  to  any  Class  of  Accrual   Certificates  and  each
     ---------------
Distribution  Date through the Credit Support Depletion Date, the sum of (x) any
amount of Accrued  Certificate  Interest  allocable  to such Class  pursuant  to
Section  5.02(a)(ii) on such  Distribution  Date and (y) any Interest  Shortfall
allocable to such Class pursuant to Section  5.02(a)(iii)  on such  Distribution
Date. As to any Class of Accrual  Certificates and each  Distribution Date after
the Credit Support Depletion Date, zero.

     Accrual Certificate: None.
     -------------------

     Accrual Component: None.
     -----------------

     Accrual  Period:  With  respect to any  Distribution  Date and any Class of
     ---------------
Certificates  (other  than  any  Class  of  Principal  Only  Certificates),  the
one-month  period  beginning  immediately  following  the  end of the  preceding
Accrual  Period  (or from the  Cut-off  Date,  in the case of the first  Accrual
Period)  and  ending on the last day of the month  preceding  the month in which
such Distribution Date occurs.

     Accrued Certificate  Interest:  As to any Class of Certificates (other than
     -----------------------------
any Principal Only  Certificates) and any Distribution  Date, the product of the
Interest Rate for such Class of Certificates  and the Class Principal Amount (or
Class Notional Amount) of such Class of Certificates  immediately preceding such
Distribution  Date, as reduced by such Class's share of the interest  portion of
(i) any  Excess  Losses  for such  Distribution  Date and  (ii) any  Relief  Act
Reduction,  in each case allocable among the Class A Certificates of the related
Certificate Group pro rata based on the Accrued  Certificate  Interest otherwise
distributable  thereto,  and allocable to the Subordinate  Certificates pro rata
based on interest accrued on their respective  Apportioned  Principal  Balances.
Interest will be calculated on the basis of a 360-day year  consisting of twelve
30-day months.

     Additional Collateral: None.
     ---------------------

     Adjustable Rate Mortgage Loan: None.
     -----------------------------

     Advance:  An advance of the aggregate of payments of principal and interest
     -------
(net of the Master  Servicing Fee and the Servicing Fee) on one or more Mortgage
Loans that were due on the Due Date in the related  Due Period and not  received
as of the close of business on the related  Determination  Date,  required to be
made by or on behalf of the Master Servicer and any Servicer (or by the Trustee)
pursuant to Section 5.04.

     Affiliate:   With  respect  to  any  specified  Person,  any  other  Person
     ---------
controlling or controlled by or under common control with such specified Person.
For the  purposes of this  definition,  "control"  when used with respect to any
specified  Person means the power to direct the  management and policies of such
Person,  directly  or  indirectly,  whether  through  the  ownership  of  voting
securities,   by  contract  or  otherwise;   and  the  terms  "controlling"  and
"controlled" have meanings correlative to the foregoing.

     Aggregate Master Servicing  Compensation:  As to any Distribution Date, the
     ----------------------------------------
sum of (x) the  aggregate  of the Master  Servicing  Fees  payable to the Master
Servicer  in  respect  of such  Distribution  Date and (y) all  income  and gain
realized  from the  investment  of funds in the  Collection  Account  during the
period from and  including  the Deposit Date in the calendar  month  immediately
preceding the month in which such Distribution Date occurs, to but excluding the
Deposit Date relating to such Distribution Date.

     Aggregate  Principal  Balance:  The  aggregate of the  Scheduled  Principal
     -----------------------------
Balances for all Mortgage Loans at any date of determination.

     Aggregate Subordinate Percentage: The sum of the Class Principal Amounts of
     --------------------------------
the Subordinate  Certificates divided by the sum of the Non-AP Pool Balances for
all Mortgage Pools.

     Aggregate  Voting  Interests:  The aggregate of the Voting Interests of all
     ----------------------------
the Certificates under this Agreement.

     Agreement: This Trust Agreement and all amendments and supplements hereto.
     ---------

     AP Percentage:  As to any Discount  Mortgage Loan in any Mortgage Pool, the
     -------------
percentage  equivalent of a fraction,  the numerator of which is 6.90% minus the
Net Mortgage Rate of such Discount Mortgage Loan and the denominator of which is
6.90%. As to any Non-Discount Mortgage Loan in any Mortgage Pool, 0.000%.

     AP Principal  Distribution  Amount:  For any Distribution Date and for each
     ----------------------------------
Certificate Group, the sum of the following amounts:

          (i) the  applicable AP  Percentage  of the  principal  portion of each
     Scheduled  Payment  (without  giving  effect to any Debt Service  Reduction
     occurring  prior  to the  Bankruptcy  Coverage  Termination  Date)  on each
     Mortgage  Loan in the  related  Mortgage  Pool due during the  related  Due
     Period;

          (ii) the  applicable AP  Percentage of each of the following  amounts:
     (1) each Principal  Prepayment  collected on a Mortgage Loan in the related
     Mortgage  Pool  during the  applicable  Prepayment  Period,  (2) each other
     unscheduled  collection,  including  Insurance Proceeds and Net Liquidation
     Proceeds  (other  than with  respect to any  Mortgage  Loan in the  related
     Mortgage Pool that was finally liquidated during the applicable  Prepayment
     Period)  representing  or  allocable  to  recoveries  of  principal of such
     Mortgage Loan in the related  Mortgage Pool received  during the applicable
     Prepayment  Period and (3) the  principal  portion of all  proceeds  of the
     purchase of any Mortgage Loan in the related Mortgage Pool (or, in the case
     of a permitted  substitution,  amounts representing a principal adjustment)
     actually received by the Trustee with respect to the applicable  Prepayment
     Period;

          (iii) with respect to unscheduled recoveries allocable to principal of
     any Mortgage Loan in the related Mortgage Pool that was finally  liquidated
     during the related  Prepayment  Period, the applicable AP Percentage of the
     related net Liquidation Proceeds allocable to principal; and

          (iv) any  amounts  described  in  clauses  (i)  through  (iii) for any
     previous Distribution Date that remain unpaid.

     Apportioned Principal Balance: As to any Class of Subordinate  Certificates
     -----------------------------
and any  Distribution  Date, the Class Principal Amount of such Class multiplied
by a fraction, the numerator of which is the applicable Group Subordinate Amount
and the denominator of which is the sum of the Group Subordinate Amounts.

     Appraised Value: With respect to any Mortgage Loan, the amount set forth in
     ---------------
an appraisal  made in connection  with the  origination of such Mortgage Loan as
the value of the related Mortgaged Property.

     Assignment of Mortgage:  An assignment of the Mortgage,  notice of transfer
     ----------------------
or equivalent  instrument,  in recordable form, sufficient under the laws of the
jurisdiction  wherein the related  Mortgaged  Property is located to reflect the
sale of the Mortgage to the  Trustee,  which  assignment,  notice of transfer or
equivalent  instrument  may be in the  form of one or more  blanket  assignments
covering the Mortgage Loans secured by Mortgaged  Properties located in the same
jurisdiction, if permitted by law; provided, however, that the Trustee shall not
be  responsible  for  determining  whether any such  assignment is in recordable
form.

     Authenticating  Agent:  Any  authenticating  agent appointed by the Trustee
     ---------------------
pursuant to Section 6.10.

     Authorized Officer: Any Person who may execute an Officer's  Certificate on
     ------------------
behalf of the Depositor.

     Available  Distribution  Amount:  As to  each  Mortgage  Pool  and  on  any
     -------------------------------
Distribution Date, the sum of the following amounts:

          (1) the  total  amount of all cash  received  by the  Master  Servicer
     through the  Remittance  Date and  deposited by the Master  Servicer by the
     Deposit  Date  for such  Distribution  Date on the  Mortgage  Loans of such
     Mortgage Pool  (including  proceeds of any  Insurance  Policy and any other
     credit support relating to such Mortgage Loans),  plus all Advances made by
     the Master Servicer or any Servicer (or the Trustee) for such  Distribution
     Date, any Compensating Interest Payment for such date and Mortgage Pool and
     any  amounts  paid  by any  Servicer  in  respect  of  Prepayment  Interest
     Shortfalls in respect of the related  Mortgage Loans for such date, but not
     including:

               (a) all amounts  distributed  pursuant  to Section  5.02 on prior
          Distribution Dates;

               (b) all Scheduled  Payments of principal  and interest  collected
          but due on a date subsequent to the related Due Period;

               (c) all  Principal  Prepayments  received  or  identified  by the
          applicable  Servicer after the applicable  Prepayment Period (together
          with any  interest  payments  received  with such  prepayments  to the
          extent that they  represent  the  payment of  interest  accrued on the
          related  Mortgage  Loans for the period  subsequent to the  applicable
          Prepayment Period);

               (d) any other unscheduled  collection,  including Net Liquidation
          Proceeds and Insurance Proceeds, received by the Master Servicer after
          the applicable Prepayment Period; and

               (e) all  fees  and  amounts  due or  reimbursable  to the  Master
          Servicer or any  Servicer  pursuant to the terms of this  Agreement or
          the applicable Servicing Agreement;

               (f) any Prepayment Penalty Amounts;

               (g) any Prepayment Interest Excess; and

               (h)  such   portion  of  each  payment  in  respect  of  interest
          representing Retained Interest.

          (2) any other payment made by any Servicer, the Seller, the Depositor,
     or any other Person with respect to such  Distribution  Date (including the
     Purchase Price with respect to any Mortgage Loan repurchased by the Seller,
     the Depositor or any other Person).

     Balloon  Mortgage  Loan:  Any  Mortgage  Loan  having an  original  term to
     -----------------------
maturity that is shorter than its amortization  schedule,  and a final Scheduled
Payment  that is  disproportionately  large in  comparison  to  other  Scheduled
Payments.

     Balloon  Payment:  The final  Scheduled  Payment  in  respect  of a Balloon
     ----------------
Mortgage Loan.

     Bankruptcy:  As to any Person,  the making of an assignment for the benefit
     ----------
of creditors, the filing of a voluntary petition in bankruptcy,  adjudication as
a bankrupt or  insolvent,  the entry of an order for relief in a  bankruptcy  or
insolvency proceeding, the seeking of reorganization,  arrangement, composition,
readjustment, liquidation, dissolution or similar relief, or seeking, consenting
to or  acquiescing  in the  appointment  of a trustee,  receiver or  liquidator,
dissolution,  or termination, as the case may be, of such Person pursuant to the
provisions of either the United States  Bankruptcy Code of 1986, as amended,  or
any other similar state laws.

     Bankruptcy  Coverage  Termination  Date:  As to  each  Mortgage  Pool,  the
     ---------------------------------------
Distribution Date on which the related Bankruptcy Loss Limit has been reduced to
zero (or less than zero).

     Bankruptcy Loss Limit: As of the Cut-off Date, $100,000, which amount shall
     ---------------------
be reduced from time to time by the amount of Bankruptcy Losses allocated to the
Certificates.

     Bankruptcy  Losses:  Any  Realized  Losses (as  reported by the  applicable
     ------------------
Servicer to the Master  Servicer)  arising  from a  proceeding  under the United
States  Bankruptcy Code or any other similar state law or other  proceeding with
respect  to the  Mortgagor  of or  Mortgaged  Property  under a  Mortgage  Loan,
including,  without  limitation,  any such loss arising from (a) the  difference
between (i) the  principal  amount  that would have been due under the  original
scheduled  payments of principal  and interest due on the related  Mortgage Loan
and (ii) the value  established  in the  relevant  court  with  respect  to such
Mortgaged Property, including without limitation a Deficient Valuation, or (b) a
Debt Service Reduction.

     Benefit Plan Opinion: An Opinion of Counsel  satisfactory to the Trustee to
     --------------------
the effect that any proposed transfer will not (i) cause the assets of the Trust
Fund to be regarded as plan assets for purposes of the Plan Asset Regulations or
(ii)  give  rise to any  fiduciary  duty on the  part  of the  Depositor  or the
Trustee.

     Blanket  Mortgage:  The mortgage or  mortgages  encumbering  a  Cooperative
     -----------------
Property.

     Book-Entry Certificates: Beneficial interests in Certificates designated as
     -----------------------
"Book-Entry  Certificates"  in this Agreement,  ownership and transfers of which
shall be  evidenced  or made  through  book  entries  by a  Clearing  Agency  as
described in Section 3.09;  provided,  that after the  occurrence of a condition
whereupon  book-entry  registration  and  transfer are no longer  permitted  and
Definitive  Certificates are to be issued to Certificate Owners, such Book-Entry
Certificates  shall no longer be  "Book-Entry  Certificates."  As of the Closing
Date, the following Classes of Certificates constitute Book-Entry  Certificates:
the Class 1-A, Class 1-AP,  Class 2-A, Class 2-AP,  Class 2-AX, Class 3-A, Class
3-AP, Class 3-AX, Class B1, Class B2 and Class B3.

     Business Day: Any day other than (i) a Saturday or a Sunday,  (ii) a day on
     ------------
which banking institutions in New York, New York or, if other than New York, the
city in which the Corporate Trust Office of the Trustee is located, or the State
of  Colorado,  or (iii) with  respect  to any  Remittance  Date or any  Servicer
reporting date, the States  specified in the definition of "Business Day" in the
applicable Servicing Agreement,  are authorized or obligated by law or executive
order to be closed.

     Certificate:  Any one of the certificates  signed and  countersigned by the
     -----------
Trustee in substantially the forms attached hereto as Exhibit A.

     Certificate  Account:  The account  maintained by the Trustee in accordance
     --------------------
with the provisions of Section 4.04.

     Certificate  Group:  The Group 1 Certificates,  Group 2 Certificates or the
     ------------------
Group 3 Certificates, as applicable.

     Certificate Owner: With respect to a Book-Entry Certificate, the Person who
     -----------------
is the owner of such  Book-Entry  Certificate,  as reflected on the books of the
Clearing  Agency,  or on the books of a Person  maintaining an account with such
Clearing Agency (directly or as an indirect participant,  in accordance with the
rules of such Clearing Agency).

     Certificate  Principal Amount: With respect to any Certificate other than a
     -----------------------------
Notional Certificate, at the time of determination, the maximum specified dollar
amount of principal to which the Holder thereof is then entitled hereunder, such
amount being equal to the initial principal amount set forth on the face of such
Certificate  (plus, in the case of any Negative  Amortization  Certificate,  any
Deferred Interest allocated thereto on previous Distribution Dates, and plus, in
the case of any  Accrual  Certificate,  its  Percentage  Interest of any related
Accrual  Amount for each  previous  Distribution  Date),  less the amount of all
principal  distributions  previously made with respect to such Certificate,  all
Realized Losses allocated to such Certificate, and, in the case of a Subordinate
Certificate,  any Subordinate  Certificate  Writedown  Amount  allocated to such
Certificate.  For purposes of Article V hereof,  unless specifically provided to
the contrary,  Certificate Principal Amounts shall be determined as of the close
of business of the immediately preceding  Distribution Date, after giving effect
to all distributions made on such date. Notional Certificates are issued without
Certificate Principal Amounts.

     Certificate Register and Certificate Registrar: The register maintained and
     --------------------     ---------------------
the registrar appointed pursuant to Section 3.02.

     Certificateholder: The meaning provided in the definition of "Holder."
     -----------------

     Class: All Certificates bearing the same class designation.
     -----

     Class A  Certificate:  Any Class 1-A,  Class 1-AP,  Class 2-A,  Class 2-AP,
     --------------------
Class 2-AX, Class 3-A, Class 3-AP or Class 3-AX Certificate.

     Class AP Deferred Amount:  As to any  Distribution  Date on or prior to the
     ------------------------
Credit Support  Depletion Date and each of the Class 1-AP,  Class 2-AP and Class
3-AP  Certificates,  the  aggregate  of  the  applicable  AP  Percentage  of the
principal  portion  of each  Realized  Loss on a Discount  Mortgage  Loan in the
related Mortgage Pool, other than, in each case, an Excess Loss, to be allocated
to such Class of Certificates on such Distribution Date or previously  allocated
to such Class of  Certificates  and not yet paid to the Holders of such Class of
Certificates pursuant to Section 5.02(a)(v).

     Class AP Certificate: Any Class 1-AP, Class 2-AP or Class 3-AP Certificate.
     --------------------

     Class B  Certificate:  Any Class B1, Class B2, Class B3, Class B4, Class B5
     --------------------
or Class B6 Certificate.

     Class LTR Interest: The sole residual interest in the Lower Tier REMIC.
     ------------------

     Class Notional Amount: With respect to each Class of Notional Certificates,
     ---------------------
the applicable  class notional  amount  described in the  Preliminary  Statement
hereto.

     Class Principal  Amount:  With respect to each Class of Certificates  other
     -----------------------
than any  Class of  Notional  Certificates,  the  aggregate  of the  Certificate
Principal   Amounts  of  all   Certificates   of  such  Class  at  the  date  of
determination. With respect to each Class of Notional Certificates, zero.

     Class Percentage:  With respect to each Class of Subordinate  Certificates,
     ----------------
for each  Distribution  Date,  the  percentage  obtained by  dividing  the Class
Principal Amount of such Class  immediately  prior to such  Distribution Date by
the aggregate Certificate Principal Amount of all Certificates immediately prior
to such date.

     Clearing Agency: An organization registered as a "clearing agency" pursuant
     ---------------
to Section 17A of the  Securities  Exchange Act of 1934,  as amended.  As of the
Closing Date, the Clearing Agency shall be The Depository Trust Company.

     Clearing  Agency  Participant:  A broker,  dealer,  bank,  other  financial
     -----------------------------
institution or other Person for whom from time to time a Clearing Agency effects
book-entry  transfers  and pledges of  securities  deposited  with the  Clearing
Agency.

     Closing Date: February 26, 1999.
     ------------

     Code:  The  Internal  Revenue  Code of 1986,  as amended,  and as it may be
     ----
further  amended  from  time  to  time,  any  successor  statutes  thereto,  and
applicable U.S.  Department of Treasury  regulations  issued pursuant thereto in
temporary or final form.

     Collection  Account:  A separate account  established and maintained by the
     -------------------
Master Servicer pursuant to Section 4.01.

     Compensating  Interest Payment:  With respect to each Mortgage Pool and any
     ------------------------------
Distribution  Date,  an amount  equal to the excess of (x) the  aggregate of any
Prepayment  Interest  Shortfalls  with  respect to such  Mortgage  Pool and such
Distribution  Date over (y) the aggregate of any amounts  required to be paid by
any Servicer in respect of such  shortfalls  but not paid;  provided,  that such
amount,  to the  extent  payable by the  Master  Servicer,  shall not exceed the
Aggregate  Master  Servicing  Compensation  that  would be payable to the Master
Servicer in respect of such  Mortgage  Pool and such  Distribution  Date without
giving effect to any Compensating Interest Payment.

     Component: None.
     ---------

     Component Certificate: None.
     ---------------------

     Component Interest Rate: None.
     -----------------------

     Component Principal Amount: Not applicable.
     --------------------------

     Conventional Loan: A Mortgage Loan that is not insured by the United States
     -----------------
Federal  Housing  Administration  or guaranteed  by the United  States  Veterans
Administration.

     Converted Mortgage Loan: None.
     -----------------------

     Convertible Mortgage Loan: None.
     -------------------------

     Cooperative Corporation:  The entity that holds title (fee or an acceptable
     -----------------------
leasehold  estate)  to the  real  property  and  improvements  constituting  the
Cooperative  Property  and  which  governs  the  Cooperative   Property,   which
Cooperative  Corporation must qualify as a Cooperative Housing Corporation under
Section 216 of the Code.

     Cooperative  Loan:  Any Mortgage Loan secured by  Cooperative  Shares and a
     -----------------
Proprietary Lease.

     Cooperative Loan Documents: As to any Cooperative Loan, (i) the Cooperative
     --------------------------
Shares,  together  with a stock  power  in  blank;  (ii) the  original  executed
Security  Agreement  and the  assignment of the Security  Agreement  endorsed in
blank;  (iii) the original executed  Proprietary Lease and the assignment of the
Proprietary  Lease  endorsed in blank;  (iv) the original  executed  Recognition
Agreement  and  the  assignment  of  the  Recognition  Agreement  (or a  blanket
assignment of all Recognition  Agreements)  endorsed in blank;  (v) the executed
UCC-1  financing  statement with evidence of recording  thereon,  which has been
filed in all places required to perfect the security interest in the Cooperative
Shares and the Proprietary  Lease; and (vi) executed UCC-3 financing  statements
(or copies thereof) or other  appropriate UCC financing  statements  required by
state law,  evidencing a complete and  unbroken  line from the  mortgagee to the
Trustee  with  evidence  of  recording  thereon  (or  in  a  form  suitable  for
recordation).

     Cooperative  Property:  The real  property  and  improvements  owned by the
     ---------------------
Cooperative  Corporation,  that includes the  allocation of individual  dwelling
units to the holders of the Cooperative Shares of the Cooperative Corporation.

     Cooperative Shares: Shares issued by a Cooperative Corporation.
     ------------------

     Cooperative  Unit:  A  single  family  dwelling  located  in a  Cooperative
     -----------------
Property.

     Corporate Trust Office: The principal corporate trust office of the Trustee
     ----------------------
at  which,  at any  particular  time,  its  corporate  trust  business  shall be
administered,  which  office  at the date  hereof  is  located  at 450 West 33rd
Street, New York, New York 10001, Attention: Capital Markets Fiduciary Services.

     Corresponding Class: With respect to any class of Lower Tier Interests, the
     -------------------
Class of Certificates  or Component so designated in the  Preliminary  Statement
hereto.  With respect to any Class of  Certificates  or Component,  the class or
classes of Lower Tier  Interests  so  designated  in the  Preliminary  Statement
hereto.

     Corresponding Component: None.
     -----------------------

     Credit Score: With respect to any Mortgage Loan, a numerical  assessment of
     ------------
default risk with respect to the Mortgagor under such Mortgage Loan,  determined
based on a methodology developed by Fair, Isaac & Co., Inc.

     Credit Support  Depletion  Date:  The  Distribution  Date on which,  giving
     -------------------------------
effect to all  distributions on such date, the aggregate  Certificate  Principal
Amount of the Subordinate Certificates is reduced to zero.

     Credit Support Percentage:  As to any Class of Subordinate Certificates and
     -------------------------
any  Distribution  Date,  the sum of the Class  Percentages  of all  Classes  of
Certificates that rank lower in priority than such Class.

     Custodial Agreement: Each custodial agreement attached as Exhibit K hereto,
     -------------------
and any custodial agreement  subsequently  executed by the Trustee substantially
in the form thereof.

     Custodian:  Each custodian appointed by the Trustee pursuant to a Custodial
     ---------
Agreement, and any successor thereto.

     Cut-off Date: February 1, 1999.
     ------------

     Cut-off  Date  Aggregate  Principal  Balance:  With respect to the Mortgage
     --------------------------------------------
Loans in the Trust Fund on the Closing Date, the Aggregate Principal Balance for
all such Mortgage Loans as of the Cut-off Date.

     DCR: Duff & Phelps Credit Rating Co., or any successor in interest.
     ---

     Debt Service  Reduction:  With respect to any Mortgage Loan, a reduction of
     -----------------------
the Scheduled  Payment that the related Mortgagor is obligated to pay on any Due
Date  as a  result  of any  proceeding  under  Bankruptcy  law  or  any  similar
proceeding.

     Deferred  Interest:  With  respect  to any Class of  Negative  Amortization
     ------------------
Certificates  and any  Distribution  Date,  the  lesser  of (x)  the  applicable
Interest  Distribution  Amount  for such  date  (without  giving  effect  to any
Deferred Interest) and (y) the aggregate Mortgage Loan Negative Amortization, if
any, for the related Due Period.

     Deficient  Valuation:  With respect to any Mortgage  Loan, a valuation by a
     --------------------
court of competent jurisdiction of the Mortgaged Property in an amount less than
the then  outstanding  indebtedness  under such Mortgage Loan,  which  valuation
results from a proceeding under Bankruptcy law or any similar proceeding.

     Definitive  Certificate:  A Certificate  of any Class issued in definitive,
     -----------------------
fully registered, certificated form.

     Deleted  Mortgage Loan: A Mortgage Loan that is repurchased  from the Trust
     ----------------------
Fund  pursuant  to the  terms  hereof  or as to  which  one or  more  Qualifying
Substitute Mortgage Loans are substituted therefor.

     Deposit  Date:  With respect to each  Distribution  Date,  the Business Day
     -------------
immediately preceding such Distribution Date.

     Depositor:  Structured Asset Securities Corporation, a Delaware corporation
     ---------
having  its  principal  place of  business  in New York,  or its  successors  in
interest.

     Determination Date: With respect to each Distribution Date, the 18th day of
     ------------------
the month in which such Distribution Date occurs,  or, if such 18th day is not a
Business Day, the next succeeding Business Day.

     Discount  Mortgage  Loan:  Any Mortgage  Loan with a Net Mortgage Rate less
     ------------------------
than 6.90% per annum.

     Disqualified Organization:  Either (i) the United States, (ii) any state or
     -------------------------
political   subdivision  thereof,   (iii)  any  foreign  government,   (iv)  any
international  organization,  (v) any  agency or  instrumentality  of any of the
foregoing,  (vi) any tax-exempt organization (other than a cooperative described
in section 521 of the Code) which is exempt from the tax imposed by Chapter 1 of
the Code unless such  organization  is subject to the tax imposed by section 511
of the Code,  (vii) any organization  described in section  1381(a)(2)(C) of the
Code,  (viii) any "electing large  partnership"  described in section 775 of the
Code, or (ix) any other entity  designated  as a  Disqualified  Organization  by
relevant  legislation amending the REMIC Provisions and in effect at or proposed
to be effective as of the time of the determination.  In addition, a corporation
will not be treated as an  instrumentality  of the United States or of any state
or political  subdivision  thereof if all of its  activities  are subject to tax
and,  with the  exception  of the  Federal  Home Loan  Mortgage  Corporation,  a
majority of its board of directors is not selected by such governmental unit.

     Distribution  Date: The 25th day of each month, or, if such 25th day is not
     ------------------
a Business Day, the next succeeding Business Day commencing in March 1999.

     Due Date:  With respect to any Mortgage Loan, the date on which a Scheduled
     --------
Payment is due under the related Mortgage Note.

     Due Period: With respect to any Distribution Date, the period commencing on
     ----------
the  second  day of the month  immediately  preceding  the  month in which  such
Distribution  Date occurs and ending on the first day of the month in which such
Distribution Date occurs.

     Eligible  Account:  Either  (i) an account or  accounts  maintained  with a
     -----------------
federal or state chartered depository institution or trust company acceptable to
the Rating  Agencies  or (ii) an account or accounts  the  deposits in which are
insured by the FDIC to the limits established by such corporation, provided that
any  such  deposits  not so  insured  shall be  maintained  in an  account  at a
depository  institution or trust company whose  commercial  paper or other short
term debt  obligations  (or, in the case of a  depository  institution  or trust
company which is the principal  subsidiary of a holding company,  the commercial
paper or other short term debt or deposit obligations of such holding company or
depository  institution,  as the  case may be) have  been  rated by each  Rating
Agency in its highest  short-term  rating category,  or (iii) a segregated trust
account or accounts (which shall be a "special deposit account") maintained with
the Trustee or any other federal or state  chartered  depository  institution or
trust company,  acting in its fiduciary capacity,  in a manner acceptable to the
Trustee and the Rating Agencies. Eligible Accounts may bear interest.

     Eligible  Investments:  Any  one or more of the  following  obligations  or
     ---------------------
securities:

          (i) direct  obligations  of, and  obligations  fully  guaranteed as to
     timely  payment of principal  and interest by, the United States of America
     or any  agency or  instrumentality  of the  United  States of  America  the
     obligations  of which are backed by the full faith and credit of the United
     States of America ("Direct Obligations");

          (ii) federal funds,  or demand and time deposits in,  certificates  of
     deposits of, or bankers' acceptances issued by, any depository  institution
     or trust company (including U.S.  subsidiaries of foreign  depositories and
     the  Trustee  or  any  agent  of the  Trustee,  acting  in  its  respective
     commercial capacity) incorporated or organized under the laws of the United
     States of America or any state  thereof  and  subject  to  supervision  and
     examination by federal or state banking authorities, so long as at the time
     of investment or the contractual  commitment  providing for such investment
     the  commercial   paper  or  other  short-term  debt  obligations  of  such
     depository  institution  or trust  company (or, in the case of a depository
     institution or trust company which is the principal subsidiary of a holding
     company,   the  commercial  paper  or  other  short-term  debt  or  deposit
     obligations of such holding company or deposit institution, as the case may
     be) have been rated by each Rating Agency in its highest  short-term rating
     category or one of its two highest long-term rating categories;

          (iii) repurchase  agreements  collateralized by Direct  Obligations or
     securities   guaranteed  by  GNMA,   FNMA  or  FHLMC  with  any  registered
     broker/dealer  subject  to  Securities  Investors'  Protection  Corporation
     jurisdiction   or  any  commercial  bank  insured  by  the  FDIC,  if  such
     broker/dealer  or  bank  has  an  uninsured,   unsecured  and  unguaranteed
     obligation  rated by each Rating  Agency in its highest  short-term  rating
     category;

          (iv) securities  bearing  interest or sold at a discount issued by any
     corporation  incorporated under the laws of the United States of America or
     any state thereof which have a credit  rating from each Rating  Agency,  at
     the time of investment  or the  contractual  commitment  providing for such
     investment,  at least  equal to one of the two  highest  short-term  credit
     ratings of each Rating Agency; provided, however, that securities issued by
     any particular  corporation will not be Eligible  Investments to the extent
     that investment therein will cause the then outstanding principal amount of
     securities issued by such corporation and held as part of the Trust Fund to
     exceed 20% of the sum of the Aggregate  Principal Balance and the aggregate
     principal  amount of all Eligible  Investments in the Certificate  Account;
     provided, further, that such securities will not be Eligible Investments if
     they are  published as being under review with negative  implications  from
     either Rating Agency;

          (v) commercial  paper  (including  both  noninterest-bearing  discount
     obligations  and  interest-bearing  obligations  payable  on demand or on a
     specified  date not more than 180 days after the date of issuance  thereof)
     rated by each Rating Agency in its highest short-term ratings;

          (vi) a Qualified GIC;

          (vii) certificates or receipts representing direct ownership interests
     in future  interest  or  principal  payments on  obligations  of the United
     States of America or its agencies or  instrumentalities  (which obligations
     are backed by the full faith and  credit of the United  States of  America)
     held by a  custodian  in  safekeeping  on  behalf  of the  holders  of such
     receipts; and

          (viii)  any other  demand,  money  market,  common  trust fund or time
     deposit or obligation, or interest-bearing or other security or investment,
     (A) rated in the highest rating  category by each Rating Agency or (B) that
     would not adversely  affect the then current rating by either Rating Agency
     of any of the Certificates.  Such investments in this subsection (viii) may
     include money market mutual funds, including, without limitation, the VISTA
     U.S.  Government  Money  Market  Fund or any other fund for which The Chase
     Manhattan Bank (the "Bank"),  the Trustee or an affiliate thereof serves as
     an investment advisor,  administrator,  shareholder servicing agent, and/or
     custodian  or  subcustodian,  notwithstanding  that  (i)  the  Bank  or  an
     affiliate  thereof  charges and collects  fees and expenses from such funds
     for services  rendered,  (ii) the Bank or an affiliate  thereof charges and
     collects  fees  and  expenses  for  services   rendered  pursuant  to  this
     Agreement, and (iii) services performed for such funds and pursuant to this
     Agreement may converge at any time. The Trustee specifically authorizes the
     Bank or an  affiliate  thereof to charge and collect  from the Trustee such
     fees as are  collected  from  all  investors  in such  funds  for  services
     rendered to such funds (but not to exceed investment earnings thereon);

provided,  however,  that no such instrument shall be an Eligible  Investment if
such instrument  evidences either (i) a right to receive only interest  payments
with  respect  to the  obligations  underlying  such  instrument,  or (ii)  both
principal  and  interest  payments  derived  from  obligations  underlying  such
instrument  and  the  principal  and  interest  payments  with  respect  to such
instrument  provide a yield to  maturity  of  greater  than 120% of the yield to
maturity  at  par  of  such  underlying  obligations,  provided  that  any  such
investment  will be a  "permitted  investment"  within  the  meaning  of Section
860G(a)(5) of the Code.

     ERISA-Restricted Certificate: Any Subordinate Certificate.
     ----------------------------

     Escrow  Account:  Any account  established and maintained by the applicable
     ---------------
Servicer pursuant to the applicable Servicing Agreement.

     Event of Default: Any one of the conditions or circumstances  enumerated in
     ----------------
Section 6.14(a).

     Excess Loss:  Any  Bankruptcy  Loss, or portion  thereof,  in excess of the
     -----------
then-applicable  Bankruptcy Loss Limit, any Fraud Loss, or portion  thereof,  in
excess of the then-applicable  Fraud Loss Limit, and any Special Hazard Loss, or
portion thereof, in excess of the then-applicable Special Hazard Loss Limit.

     FDIC: The Federal Deposit Insurance Corporation or any successor thereto.
     ----

     FHLMC:   The  Federal   Home  Loan   Mortgage   Corporation,   a  corporate
     -----
instrumentality of the United States created and existing under Title III of the
Emergency Home Finance Act of 1970, as amended, or any successor thereto.

     Final Scheduled Distribution Date: May 25, 2029.
     ---------------------------------

     Financial   Intermediary:   A  broker,  dealer,  bank  or  other  financial
     ------------------------
institution  or other  Person  that  clears  through or  maintains  a  custodial
relationship with a Clearing Agency Participant.

     Fitch: Fitch IBCA, Inc., or any successor in interest.
     -----

     FNMA: The Federal National Mortgage Association,  a federally chartered and
     ----
privately owned  corporation  organized and existing under the Federal  National
Mortgage Association Charter Act, or any successor thereto.

     Fraud Loss:  Any Realized Loss on a Mortgage Loan  sustained by reason of a
     ----------
default arising from fraud,  dishonesty or  misrepresentation in connection with
the related Mortgage Loan, as reported by the applicable  Servicer to the Master
Servicer.

     Fraud Loss Limit:  As of any  Distribution  Date after the Cut-off Date (x)
     ----------------
prior  to the  first  anniversary  of the  Cut-off  Date,  $5,775,472,  less the
aggregate of the Fraud Losses since the Cut-off Date,  and (y) from the first to
the fourth anniversary of the Cut-off Date, an amount equal to (1) the lesser of
(a) the Fraud Loss Limit as of the most recent  anniversary  of the Cut-off Date
and (b) 2% (from  the  first to but  excluding  the  second  anniversary  of the
Cut-off Date) or 1% (from and including the second, third and fourth anniversary
of the Cut-off  Date) of the  aggregate  principal  balance of all the  Mortgage
Loans  as of the  most  recent  anniversary  of the  Cut-off  Date  less (2) the
aggregate of Fraud Losses since the most recent anniversary of the Cut-off Date.
On or after the fifth  anniversary  of the  Cut-off  Date,  the Fraud Loss Limit
shall be zero.

     GNMA:  The  Government  National  Mortgage  Association,   a  wholly  owned
     ----
corporate instrumentality of the United States within HUD.

     Group 1: All of the Group 1 Certificates.
     -------

     Group 1 Certificate: Any Class 1-A or Class 1-AP Certificate.
     -------------------

     Group 2: All of the Group 2 Certificates.
     -------

     Group 2  Certificate:  Any Class  2-A,  Class  2-AP,  Class 2-AX or Class R
     --------------------
Certificate.

     Group 3: All of the Group 3 Certificates.
     -------

     Group 3 Certificate: Any Class 3-A, Class 3-AP or Class 3-AX Certificate.
     -------------------

     Group  Subordinate  Amount:  As to any Mortgage  Pool and any  Distribution
     --------------------------
Date,  the excess of the Non-AP Pool Balance of such  Mortgage Pool over the sum
of the  aggregate  of the  Certificate  Principal  Amounts of the Non-AP  Senior
Certificates of the related Certificate Group.

     Holder or  Certificateholder:  The registered  owner of any  Certificate as
     ------     -----------------
recorded on the books of the Certificate  Registrar except that,  solely for the
purposes of taking any action or giving any consent  pursuant to this Agreement,
any Certificate registered in the name of the Depositor, the Trustee, the Master
Servicer,  any  Servicer  or any  Affiliate  thereof  shall be deemed  not to be
outstanding in determining whether the requisite  percentage necessary to effect
any such consent has been  obtained,  except that,  in  determining  whether the
Trustee shall be protected in relying upon any such consent,  only  Certificates
which a  Responsible  Officer  of the  Trustee  knows  to be so  owned  shall be
disregarded.  The Trustee may request and conclusively rely on certifications by
the Depositor,  the Master Servicer and any Servicer in determining  whether any
Certificates  are  registered  to an  Affiliate  of the  Depositor,  the  Master
Servicer or such Servicer.

     HUD: The United States Department of Housing and Urban Development,  or any
     ---
successor thereto.

     Independent:  When used with  respect to any  Accountants,  a Person who is
     -----------
"independent"  within the meaning of Rule 2-01(b) of the Securities and Exchange
Commission's  Regulation  S-X.  When used with  respect to any other  Person,  a
Person  who (a) is in fact  independent  of  another  specified  Person  and any
Affiliate of such other Person,  (b) does not have any material direct financial
interest in such other Person or any Affiliate of such other Person,  and (c) is
not connected with such other Person or any Affiliate of such other Person as an
officer, employee, promoter,  underwriter,  trustee, partner, director or Person
performing similar functions.

     Insurance  Policy:  Any Primary Mortgage  Insurance Policy and any standard
     -----------------
hazard insurance policy,  earthquake  insurance policy or title insurance policy
relating to the Mortgage Loans or the Mortgaged  Properties,  to be in effect as
of the Closing Date or thereafter during the term of this Agreement.

     Insurance Proceeds: Amounts paid by the insurer under any Insurance Policy,
     ------------------
other  than  amounts  (i) to cover  expenses  incurred  by or on  behalf  of the
Servicer in  connection  with  procuring  such  proceeds,  (ii) to be applied to
restoration or repair of the related Mortgaged  Property or (iii) required to be
paid over to the Mortgagor pursuant to law or the related Mortgage Note.

     Interest Distribution Amount: Not applicable.
     ----------------------------

     Interest Rate: With respect to each Class of  Certificates,  the applicable
     -------------
per annum rate set forth or described in the Preliminary Statement hereto.

     Interest  Shortfall:  With  respect  to any Class of  Certificates  and any
     -------------------
Distribution Date, any Accrued Certificate Interest not distributed (or added to
principal) with respect to any previous  Distribution  Date,  other than any Net
Prepayment Interest Shortfalls.

     Intervening  Assignments:  The  original  intervening  assignments  of  the
     ------------------------
Mortgage, notice of transfer or equivalent instrument.

     Latest Possible Maturity Date: May 25, 2031.
     -----------------------------

     Lehman  Capital:  Lehman Capital,  A Division of Lehman  Brothers  Holdings
     ---------------
Inc., or any successor in interest.

     Liquidated  Mortgage  Loan:  Any  defaulted  Mortgage  Loan as to which the
     --------------------------
Master Servicer or the applicable  Servicer has determined that all amounts that
it  expects  to  recover  on behalf of the Trust Fund from or on account of such
Mortgage Loan have been recovered.

     Liquidation Expenses:  Expenses that are incurred by the Master Servicer or
     --------------------
a Servicer in connection with the liquidation of any defaulted Mortgage Loan and
are not recoverable  under the applicable  Primary  Mortgage  Insurance  Policy,
including,  without limitation,  foreclosure and rehabilitation  expenses, legal
expenses and unreimbursed  amounts  expended  pursuant to Sections 9.06, 9.16 or
9.22.

     Liquidation Proceeds: Cash received in connection with the liquidation of a
     --------------------
defaulted Mortgage Loan, whether through the sale or assignment of such Mortgage
Loan, trustee's sale, foreclosure sale or otherwise,  or the sale of the related
Mortgaged  Property if the Mortgaged Property is acquired in satisfaction of the
Mortgage Loan, including any amounts remaining in the related Escrow Account.

     Loan-to-Value  Ratio:  With respect to any Mortgage  Loan, the ratio of the
     --------------------
principal balance of such Mortgage Loan at origination, or such other date as is
specified, to the Original Value thereof.

     Lower  Tier  Interest:  Any one of the  classes  of  lower  tier  interests
     ---------------------
described in the Preliminary Statement hereto.

     Lower Tier Interest  Rate: As to each Lower Tier  Interest,  the applicable
     -------------------------
interest rate, if any, as described in the Preliminary Statement hereto.

     Lower  Tier  REMIC:  One of the two  separate  REMICs as  described  in the
     ------------------
Preliminary Statement hereto.

     Maintenance:  With respect to any Cooperative Unit, the rent or fee paid by
     -----------
the Mortgagor to the Cooperative Corporation pursuant to the Proprietary Lease.

     Master  Servicer:  Aurora Loan Services Inc., or any successor in interest,
     ----------------
or if any successor master servicer shall be appointed as herein provided,  then
such successor master servicer.

     Master Servicing Fee: As to any  Distribution  Date and each Mortgage Loan,
     --------------------
an  amount  equal  to the  product  of the  Master  Servicing  Fee  Rate and the
Scheduled  Principal  Balance of such  Mortgage  Loan as of the first day of the
related Due Period.  The Master  Servicing  Fee for any  Mortgage  Loan shall be
payable in respect of any Distribution  Date solely from the interest portion of
the Scheduled Payment or other payment or recovery with respect to such Mortgage
Loan.

     Master Servicing Fee Rate: 0.02% per annum.
     -------------------------

     Material Defect: As defined in Section 2.02(c) hereof.
     ---------------

     MERS:  Mortgage   Electronic   Registration   Systems,   Inc.,  a  Delaware
     ----
Corporation, or any successor in interest thereto.

     MERS Mortgage Loan: Any Mortgage Loan as to which the related Mortgage,  or
     ------------------
an Assignment of Mortgage,  has been or will be recorded in the name of MERS, as
agent for the holder from time to time of the Mortgage Note.

     Moody's: Moody's Investors Service, Inc., or any successor in interest.
     -------

     Mortgage: A mortgage,  deed of trust or other instrument  encumbering a fee
     --------
simple  interest  in real  property  securing a  Mortgage  Note,  together  with
improvements thereto.

     Mortgage File: The mortgage  documents listed in Section 2.01(b) pertaining
     -------------
to a  particular  Mortgage  Loan  required to be  delivered  to the Trustee or a
Custodian pursuant to this Agreement.

     Mortgage  Loan:  A Mortgage  and the related  notes or other  evidences  of
     --------------
indebtedness secured by each such Mortgage conveyed, transferred, sold, assigned
to or  deposited  with the  Trustee  pursuant to Section  2.01 or Section  2.05,
including  without  limitation,  each  Mortgage Loan listed on the Mortgage Loan
Schedule, as amended from time to time.

     Mortgage Loan Sale Agreement: The agreement,  dated as of February 1, 1999,
     ----------------------------
for the sale of the Mortgage Loans by Lehman Capital to the Depositor.

     Mortgage Loan Schedule:  The schedule  attached hereto as Schedule A, which
     ----------------------
shall  identify each Mortgage Loan, as such schedule may be amended from time to
time pursuant to Section 2.02.

     Mortgage  Note:  The  note  or  other  evidence  of the  indebtedness  of a
     --------------
Mortgagor secured by a Mortgage under a Mortgage Loan.

     Mortgage Pool: Any of Pool 1, Pool 2 or Pool 3.
     -------------

     Mortgage  Rate:  As to any  Mortgage  Loan,  the per  annum  rate at  which
     --------------
interest accrues on such Mortgage Loan.

     Mortgaged Property: Either of (x) the fee simple interest in real property,
     ------------------
together with  improvements  thereto  including any exterior  improvements to be
completed within 120 days of disbursement of the related Mortgage Loan proceeds,
or (y) in the case of a Cooperative  Loan,  the related  Cooperative  Shares and
Proprietary Lease,  securing the indebtedness of the Mortgagor under the related
Mortgage Loan.

     Mortgagor: The obligor on a Mortgage Note.
     ---------

     Negative Amortization Certificate: None.
     ---------------------------------

     Net Liquidation Proceeds: With respect to any Liquidated Mortgage Loan, the
     ------------------------
related Liquidation Proceeds net of unreimbursed expenses incurred in connection
with liquidation or foreclosure and unreimbursed  Advances,  Servicing Advances,
Servicing  Fees  and  Retained  Interest,  if  any,  received  and  retained  in
connection with the liquidation of such Mortgage Loan.

     Net Mortgage  Rate:  With respect to any Mortgage  Loan,  the Mortgage Rate
     ------------------
thereof  reduced by the sum of the  applicable  Servicing  Fee Rate,  the Master
Servicing Fee Rate, the Trustee Fee Rate and the Retained Interest Rate.

     Net Prepayment Interest  Shortfall:  With respect to each Mortgage Pool and
     ----------------------------------
any Distribution Date, the excess, if any, of any Prepayment Interest Shortfalls
with respect to the Mortgage  Loans in such Mortgage Pool for such date over the
sum of any amounts paid by the Servicers with respect to such shortfalls and any
amount  that is  required  to be paid by the Master  Servicer in respect of such
shortfalls pursuant to this Agreement.

     Non-AP Senior Certificate: Any Class 1-A, Class 2-A, Class 2-AX, Class 3-A,
     -------------------------
Class 3-AX or Class R Certificate.

     Non-AP  Percentage:  As to any Discount Mortgage Loan in any Mortgage Pool,
     ------------------
the  percentage  equivalent of the  fraction,  the numerator of which is the Net
Mortgage Rate of such Discount  Mortgage  Loan and the  denominator  of which is
6.90%. As to any Premium Mortgage Loan in any Mortgage Pool, 100%.

     Non-AP Pool Balance:  As to each Mortgage Pool and any  Distribution  Date,
     -------------------
the sum of the applicable Non-AP  Percentage of the Scheduled  Principal Balance
of each Mortgage Loan included in such Mortgage Pool.

     Non-Book-Entry  Certificate:   Any  Certificate  other  than  a  Book-Entry
     ---------------------------
Certificate.

     Non-Discount  Mortgage  Loan:  Any Mortgage  Loan with a Net Mortgage  Rate
     ----------------------------
equal to or greater than 6.90% per annum.

     Non-MERS Mortgage Loan: Any Mortgage Loan other than a MERS Mortgage Loan.
     ----------------------

     Non-permitted Foreign Holder:  As defined in Section 3.03(f).
     ----------------------------

     Non-U.S. Person: Any individual,  corporation,  partnership or other person
     ---------------
other  than  a  citizen  or  resident  of  the  United  States;  a  corporation,
partnership  or other  entity  created or  organized in or under the laws of the
United States or any state thereof,  including for this purpose, the District of
Columbia; an estate that is subject to U.S. federal income tax regardless of the
source of its income;  or a trust if a court within the United States is able to
exercise  primary  supervision over the  administration  of the trust and one or
more United States trustees have authority to control all substantial  decisions
of the trust.

     Notional  Amount:  With  respect  to  any  Notional   Certificate  and  any
     ----------------
Distribution Date, such Certificate's  Percentage Interest of the Class Notional
Amount of such Class of Certificates for such Distribution Date.

     Notional Certificate: Any Class 2-AX or Class 3-AX Certificate.
     --------------------

     Notional Component: None.
     ------------------

     Notional Component Amount: None.
     -------------------------

     Offering  Document:  Either  of the  Prospectus  or the  private  placement
     ------------------
memorandum  dated February 24, 1999 relating to the Class B4, Class B5 and Class
B6 Certificates.

     Officer's  Certificate:  A certificate signed by the Chairman of the Board,
     ----------------------
any Vice  Chairman,  the  President,  any Vice  President or any Assistant  Vice
President of a Person, and in each case delivered to the Trustee.

     Opinion of Counsel: A written opinion of counsel,  reasonably acceptable in
     ------------------
form and substance to the Trustee, and who may be in-house or outside counsel to
the Depositor,  the Master  Servicer or a Servicer but which must be Independent
outside  counsel  with  respect to any such  opinion of counsel  concerning  the
transfer of any Residual  Certificate or concerning certain matters with respect
to the Employee Retirement Income Security Act of 1974, as amended ("ERISA"), or
the taxation, or the federal income tax status, of each REMIC.

     Original  Credit  Support  Percentage:   With  respect  to  each  Class  of
     -------------------------------------
Subordinate  Certificates,  the  Credit  Support  Percentage  for such  Class of
Certificates on the Closing Date.

     Original  Group  Subordinate  Amount:  As to any Mortgage  Pool,  the Group
     ------------------------------------
Subordinate Amount for such Mortgage Pool on the Closing Date.

     Original  Value:  The  lesser  of (a) the  Appraised  Value of a  Mortgaged
     ---------------
Property at the time the related  Mortgage  Loan was  originated  and (b) if the
Mortgage  Loan was made to finance  the  acquisition  of the  related  Mortgaged
Property, the purchase price paid for the Mortgaged Property by the Mortgagor at
the time the related Mortgage Loan was originated.

     Paying Agent: Any paying agent appointed pursuant to Section 3.08.
     ------------

     Percentage  Interest:  With  respect  to any  Certificate,  its  percentage
     --------------------
interest  in the  undivided  beneficial  ownership  interest  in the Trust  Fund
evidenced  by all  Certificates  of the  same  Class as such  Certificate.  With
respect to any  Certificate  other than a Notional  Certificate,  the Percentage
Interest evidenced thereby shall equal the initial Certificate  Principal Amount
thereof divided by the initial Class Principal Amount of all Certificates of the
same Class. With respect to any Notional  Certificate,  the Percentage  Interest
evidenced thereby shall be as specified on the face thereof.

     Person:   Any   individual,   corporation,   partnership,   joint  venture,
     ------
association,    joint-stock   company,   limited   liability   company,   trust,
unincorporated organization or government or any agency or political subdivision
thereof.

     Placement Agent: Lehman Brothers Inc.
     ---------------

     Plan Asset Regulations: The Department of Labor regulations set forth in 29
     ----------------------
C.F.R. 2510.3-101.

     Pool 1: The aggregate of the Mortgage Loans identified on the Mortgage Loan
     ------
Schedule as being included in Pool 1.

     Pool 2: The aggregate of the Mortgage Loans identified on the Mortgage Loan
     ------
Schedule as being included in Pool 2.

     Pool 3: The aggregate of the Mortgage Loans identified on the Mortgage Loan
     ------
Schedule as being included in Pool 3.

     Premium  Mortgage  Loan. Any Mortgage Loan with a Net Mortgage Rate greater
     -----------------------
than 6.90% per annum.

     Prepayment  Interest  Excess:  With respect to any Principal  Prepayment in
     ----------------------------
full received  from the first day through the  sixteenth  day of any month,  all
amounts paid in respect of interest at the  applicable Net Mortgage Rate on such
Principal Prepayment.

     Prepayment  Interest  Shortfall:  With respect to any Distribution Date and
     -------------------------------
(x) any Principal Prepayment in part (other than any such prepayment received on
the first of the month) and (y) any Principal  Prepayment in full received on or
after the seventeenth day of the month  immediately  preceding the month of such
Distribution  Date,  but on or  before  the  last day of the  month  immediately
preceding the month of such  Distribution  Date, the difference  between (i) one
full month's  interest at the  applicable  Mortgage  Rate (giving  effect to any
applicable  Relief Act Reduction),  as reduced by the Master Servicing Fee Rate,
the  applicable  Servicing  Fee  Rate and the  Retained  Interest  Rate,  on the
outstanding  principal  balance of such Mortgage Loan immediately  prior to such
prepayment  and (ii) the amount of interest  actually  received  with respect to
such Mortgage Loan in connection with such Principal Prepayment.

     Prepayment  Penalty  Amounts:  With respect to any  Distribution  Date, all
     ----------------------------
premiums  or  charges  paid by the  obligors  under  the  Mortgage  Notes due to
Principal   Prepayments  collected  by  the  Servicers  during  the  immediately
preceding Prepayment Period.

     Prepayment  Period:  With respect to any Distribution  Date and any partial
     ------------------
Principal  Prepayment,  the period from the second day of the month  immediately
preceding the month of such  Distribution  Date to the first day of the month of
such  Distribution  Date.  With  respect  to any  Distribution  Date  and a full
Principal  Prepayment,  the  period  from  the  seventeenth  day  of  the  month
immediately  preceding the month of such  Distribution Date to the sixteenth day
of the month of such Distribution Date.

     Primary Mortgage Insurance Policy:  Mortgage guaranty insurance, if any, on
     ---------------------------------
an individual Mortgage Loan, as evidenced by a policy or certificate.

     Principal Amount Schedules: Not applicable.
     --------------------------

     Principal  Only  Certificate:  Any Class  1-AP,  Class  2-AP or Class  3-AP
     ----------------------------
Certificate.

     Principal  Prepayment:  Any  Mortgagor  payment of principal  (other than a
     ---------------------
Balloon  Payment) or other  recovery  of  principal  on a Mortgage  Loan that is
recognized  as having been received or recovered in advance of its scheduled Due
Date and  applied  to reduce  the  principal  balance  of the  Mortgage  Loan in
accordance  with the  terms of the  Mortgage  Note or the  applicable  Servicing
Agreement.

     Proceeding:  Any  suit  in  equity,  action  at law or  other  judicial  or
     ----------
administrative proceeding.

     Proprietary  Lease:  With  respect  to any  Cooperative  Unit,  a lease  or
     ------------------
occupancy  agreement  between a Cooperative  Corporation and a holder of related
Cooperative Shares.

     Prospectus:  The prospectus  supplement  dated February 24, 1999,  together
     ----------
with the accompanying  prospectus dated January 15, 1999,  relating to the Class
1-A, Class 1-AP, Class 2-A, Class 2-AP, Class 2-AX, Class 3-A, Class 3-AP, Class
3-AX, Class B1, Class B2, Class B3 and Class R Certificates.

     Purchase Price:  With respect to the repurchase of a Mortgage Loan pursuant
     --------------
to  this  Agreement,  an  amount  equal  to the sum of (a)  100%  of the  unpaid
principal  balance of such Mortgage Loan and (b) accrued interest thereon at the
Mortgage  Rate,  from the date as to which  interest  was last  paid to (but not
including) the Due Date immediately preceding the related Distribution Date. The
Master Servicer or the applicable Servicer (or the Trustee, if applicable) shall
be  reimbursed  from the  Purchase  Price for any  Mortgage  Loan or related REO
Property  for any  Advances  made with  respect to such  Mortgage  Loan that are
reimbursable to the Master Servicer or such Servicer under this Agreement or the
related Servicing Agreement,  as well as any unreimbursed Servicing Advances and
accrued and unpaid Master Servicing Fees or Servicing Fees, as applicable.

     Qualified  GIC: A guaranteed  investment  contract or surety bond providing
     --------------
for the investment of funds in the Collection Account or the Certificate Account
and insuring a minimum,  fixed or floating rate of return on investments of such
funds, which contract or surety bond shall:

          (a) be an  obligation  of an  insurance  company or other  corporation
     whose  long-term  debt is rated  by each  Rating  Agency  in one of its two
     highest rating  categories  or, if such insurance  company has no long-term
     debt,  whose claims paying ability is rated by each Rating Agency in one of
     its two highest rating  categories,  and whose  short-term debt is rated by
     each Rating Agency in its highest rating category;

          (b) provide that the Trustee may exercise all of the rights under such
     contract or surety bond  without the  necessity of taking any action by any
     other Person;

          (c) provide  that if at any time the then current  credit  standing of
     the  obligor  under  such  guaranteed  investment  contract  is  such  that
     continued  investment  pursuant to such contract of funds would result in a
     downgrading of any rating of the Certificates,  the Trustee shall terminate
     such  contract  without  penalty and be entitled to the return of all funds
     previously invested  thereunder,  together with accrued interest thereon at
     the interest rate  provided  under such contract to the date of delivery of
     such funds to the Trustee;

          (d) provide that the Trustee's  interest therein shall be transferable
     to any successor trustee hereunder: and

          (e) provide that the funds reinvested  thereunder and accrued interest
     thereon be returnable to the Collection Account or the Certificate Account,
     as the  case  may  be,  not  later  than  the  Business  Day  prior  to any
     Distribution Date.

     Qualified  Insurer:  An insurance  company duly qualified as such under the
     ------------------
laws of the states in which the related Mortgaged  Properties are located,  duly
authorized  and  licensed in such states to transact  the  applicable  insurance
business and to write the insurance  provided and whose claims paying ability is
rated by each Rating Agency in its highest rating category or whose selection as
an insurer will not adversely affect the rating of the Certificates.

     Qualifying  Substitute  Mortgage  Loan:  In the  case  of a  Mortgage  Loan
     --------------------------------------
substituted  for a Deleted  Mortgage  Loan, a Mortgage Loan that, on the date of
substitution,  (i) has a Scheduled  Principal Balance (together with that of any
other mortgage loan  substituted  for the same Deleted  Mortgage Loan) as of the
Due Date in the month in which  such  substitution  occurs  not in excess of the
Scheduled  Principal  Balance of the related  Deleted  Mortgage Loan,  provided,
however,  that,  to the  extent  that the  Scheduled  Principal  Balance of such
Mortgage  Loan is less  than the  Scheduled  Principal  Balance  of the  related
Deleted Mortgage Loan, then such differential in principal amount, together with
interest thereon at the applicable Mortgage Rate net of the Master Servicing Fee
and the  applicable  Servicing  Fee from the date as to which  interest was last
paid through the end of the Due Period in which such substitution  occurs, shall
be paid by the party effecting such substitution to the Trustee for deposit into
the  Certificate  Account,  and  shall  be  treated  as a  Principal  Prepayment
hereunder;  (ii) has a Net Mortgage Rate not lower than the Net Mortgage Rate of
the related Deleted Mortgage Loan; (iii) has a remaining stated term to maturity
not longer than,  and not more than one year shorter than, the remaining term to
stated  maturity  of  the  related  Deleted   Mortgage  Loan;  (iv)  (A)  has  a
Loan-to-Value Ratio as of the date of such substitution of not greater than 80%,
provided, however, that if the related Deleted Mortgage Loan has a Loan-to-Value
Ratio of  greater  than 80%,  then the  Loan-to-Value  Ratio of such  substitute
Mortgage  Loan  may be  greater  than  80% but  shall  not be  greater  than the
Loan-to-Value Ratio of the related Deleted Mortgage Loan and (B) the addition of
such   substitute   Mortgage  Loan  does  not  increase  the  weighted   average
Loan-to-Value  Ratio of the  related  Mortgage  Pool by more  than 5%;  (v) will
comply with all of the representations and warranties relating to Mortgage Loans
set forth herein, as of the date as of which such substitution  occurs;  (vi) is
not  a  Cooperative  Loan  unless  the  related  Deleted  Mortgage  Loan  was  a
Cooperative  Loan;  (vii) if applicable,  has the same index as and a margin not
less  than  that of the  related  Deleted  Mortgage  Loan;  (viii)  has not been
delinquent for a period of more than 30 days more than once in the twelve months
immediately  preceding such date of  substitution;  (ix) is covered by a Primary
Mortgage  Insurance  Policy if the related Deleted  Mortgage Loan is so covered,
and the  Loan-to-Value  Ratio of such Mortgage Loan is greater than 80%; and (x)
has a Credit Score not greater than 20 points lower than the Credit Score of the
related Deleted Mortgage Loan, provided,  however,  that if the Deleted Mortgage
Loan does not have a Credit Score, then such substitute Mortgage Loan shall have
a Credit  Score  equal to or  greater  than 700.  In the event  that  either one
mortgage  loan is  substituted  for more than one Deleted  Mortgage Loan or more
than one mortgage loan is substituted  for one or more Deleted  Mortgage  Loans,
then (a) the Scheduled  Principal  Balance referred to in clause (i) above shall
be determined such that the aggregate  Scheduled  Principal  Balance of all such
substitute  Mortgage  Loans shall not exceed the aggregate  Scheduled  Principal
Balance of all Deleted  Mortgage  Loans and (b) each of (1) the rate referred to
in clause (ii) above,  (2) the remaining term to stated maturity  referred to in
clause (iii) above, (3) the Loan-to-Value Ratio referred to in clause (iv) above
and (4) the Credit Score  referred to in clause (x) above shall be determined on
a weighted average basis, provided that the final scheduled maturity date of any
Qualifying  Substitute  Mortgage  Loan  shall not  exceed  the  Final  Scheduled
Distribution Date of any Class of Certificates. Whenever a Qualifying Substitute
Mortgage  Loan is  substituted  for a Deleted  Mortgage  Loan  pursuant  to this
Agreement,   the  party   effecting   such   substitution   shall  certify  such
qualification in writing to the Trustee.

     Rating Agency: Each of DCR, Fitch and S&P.
     -------------

     Realized Loss: (a) with respect to each Liquidated Mortgage Loan, an amount
     -------------
equal to (i) the unpaid  principal  balance of such Mortgage Loan as of the date
of liquidation,  plus (ii) interest at the applicable Net Mortgage Rate from the
date as to which  interest was last paid up to the last day of the month of such
liquidation,  minus (iii) Liquidation Proceeds received, net of amounts that are
reimbursable  to the  Master  Servicer  or any  Servicer  with  respect  to such
Mortgage Loan (other than Advances of principal and interest) including expenses
of  liquidation,  and (b) with respect to each Mortgage Loan that has become the
subject of a Deficient  Valuation,  the difference  between the unpaid principal
balance of such Mortgage Loan immediately prior to such Deficient  Valuation and
the unpaid  principal  balance of such Mortgage Loan as reduced by the Deficient
Valuation. In determining whether a Realized Loss is a Realized Loss of interest
or principal,  Liquidation  Proceeds  shall be allocated,  first,  to payment of
expenses  related to such  Liquidated  Mortgage  Loan,  then to  accrued  unpaid
interest and finally to reduce the principal balance of the Mortgage Loan.

     Recognition  Agreement:  With respect to any Cooperative Loan, an agreement
     ----------------------
between the related Cooperative  Corporation and the originator of such Mortgage
Loan to  establish  the rights of such  originator  in the  related  Cooperative
Property.

     Record Date: With respect to any  Distribution  Date, the close of business
     -----------
on the last Business Day of the month  immediately  preceding the month in which
such Distribution Date occurs.

     Redemption Certificate: None.
     ----------------------

     Reference Banks: None.
     ---------------

     Reimbursement Amount: As defined in Section 5.02.
     --------------------

     Relief Act  Reduction:  With respect to any Mortgage Loan as to which there
     ---------------------
has been a reduction in the amount of interest  collectible  thereon as a result
of  application  of the  Solders'  and  Sailors'  Civil  Relief Act of 1940,  as
amended,  any amount by which interest collectible on such Mortgage Loan for the
Due Date in the related Due Period is less than interest accrued thereon for the
applicable  one-month  period at the Mortgage Rate without giving effect to such
reduction.

     REMIC:  Each of the Lower Tier REMIC and the Upper Tier REMIC, as described
     -----
in the Preliminary Statement hereto.

     REMIC Provisions:  The provisions of the federal income tax law relating to
     ----------------
real estate mortgage investment conduits,  which appear at sections 860A through
86OG of  Subchapter  M of Chapter 1 of the Code,  and  related  provisions,  and
regulations,  including  proposed  regulations and rulings,  and  administrative
pronouncements  promulgated  thereunder,  as the foregoing may be in effect from
time to time.

     Remittance  Date:  The day in each month on which each Servicer is required
     ----------------
to remit payments to the account maintained by the Master Servicer, as specified
in the related  Servicing  Agreement,  which in the case of each Servicer is the
18th  day of  each  month  (or if  such  18th  day is not a  Business  Day,  the
immediately preceding Business Day).

     REO  Property:  A Mortgaged  Property  acquired  by the Trust Fund  through
     -------------
foreclosure  or  deed-in-lieu  of  foreclosure  in  connection  with a defaulted
Mortgage Loan or otherwise treated as having been acquired pursuant to the REMIC
Provisions.

     Reserve Interest Rate: Not applicable.
     ---------------------

     Residual Certificate: Any Class R Certificate.
     --------------------

     Responsible  Officer:  When  used with  respect  to the  Trustee,  any Vice
     --------------------
President, Assistant Vice President, the Secretary, any assistant secretary, the
Treasurer, or any assistant treasurer, working in its corporate trust department
and having direct responsibility for the administration of this Agreement.

     Restricted Certificate: Any Class B4, Class B5 or Class B6 Certificate.
     ----------------------

     Retained  Interest:  Interest in respect of each  Mortgage Loan retained by
     ------------------
the Retained Interest Holder at the Retained Interest Rate.

     Retained  Interest  Holder:  The  Depositor or any successor in interest by
     --------------------------
assignment or otherwise.

     Retained  Interest Rate:  With respect to each Mortgage Loan, the excess of
     -----------------------
the Mortgage Rate of such Mortgage Loan over the Trust Rate.

     Rounding Account: Not applicable.
     ----------------

     S&P:  Standard & Poor's  Rating  Services,  a division  of the  McGraw-Hill
     ---
Companies, Inc., or any successor in interest.

     Scheduled Amount: Not applicable.
     ----------------

     Scheduled Certificate: None.
     ---------------------

     Scheduled Component: None.
     -------------------

     Scheduled Payment:  Each scheduled payment of principal and interest (or of
     -----------------
interest only, if applicable) to be paid by the Mortgagor on a Mortgage Loan, as
reduced (except where otherwise  specified  herein) by the amount of any related
Debt Service  Reduction  (excluding  all amounts of principal  and interest that
were due on or before the Cut-off Date whenever received) and, in the case of an
REO Property, an amount equivalent to the Scheduled Payment that would have been
due on the  related  Mortgage  Loan  if  such  Mortgage  Loan  had  remained  in
existence.  In the case of any bi-weekly payment Mortgage Loan, all payments due
on such  Mortgage  Loan during any Due Period  shall be deemed  collectively  to
constitute the Scheduled Payment due on such Mortgage Loan in such Due Period.

     Scheduled Principal Amount: As to any Distribution Date, an amount equal to
     --------------------------
the amount  described in clause  (i)(b) of the  definition  of Senior  Principal
Distribution Amount.

     Scheduled  Principal  Balance:  With respect to (i) any Mortgage Loan as of
     -----------------------------
any Distribution  Date, the principal balance of such Mortgage Loan at the close
of business on the Cut-off Date,  after giving effect to principal  payments due
on or before the Cut-off Date, whether or not received,  less an amount equal to
principal  payments  due after the Cut-off Date and on or before the Due Date in
the related Due Period,  whether or not received  from the Mortgagor or advanced
by any Servicer or the Master Servicer, and all amounts allocable to unscheduled
principal payments (including Principal  Prepayments,  Net Liquidation Proceeds,
Insurance  Proceeds  and  condemnation  proceeds,  in each  case  to the  extent
identified and applied prior to or during the applicable  Prepayment Period) and
(ii) any REO  Property as of any  Distribution  Date,  the  Scheduled  Principal
Balance of the related Mortgage Loan on the Due Date  immediately  preceding the
date of acquisition  of such REO Property by the Trustee  (reduced by any amount
applied as a reduction of principal on the Mortgage  Loan).  With respect to any
Mortgage Loan and the Cut-off Date, as specified in the Mortgage Loan Schedule.

     Security  Agreement:  With respect to any  Cooperative  Loan, the agreement
     -------------------
between the owner of the related  Cooperative  Shares and the  originator of the
related  Mortgage  Note that defines the terms of the security  interest in such
Cooperative Shares and the related Proprietary Lease.

     Seller: Lehman Capital, A Division of Lehman Brothers Holdings Inc., or any
     ------
successor in interest.

     Senior Certificate: Any Class 1-A, Class 1-AP, Class 2-A, Class 2-AP, Class
     ------------------
2-AX, Class 3-A, Class 3-AP, Class 3-AX or Class R Certificate.

     Senior Percentage:  With respect to each Mortgage Pool and any Distribution
     -----------------
Date, the percentage  equivalent of the fraction,  the numerator of which is the
aggregate of the Certificate Principal Amounts of the Class 1-A Certificates, in
the case of Pool 1, the Class 2-A and Class R Certificates,  in the case of Pool
2, and the Class 3-A  Certificates,  in the case of Pool 3, immediately prior to
such date and the  denominator  of which is the related  Non-AP Pool Balance for
such date.

     Senior  Prepayment  Percentage:  With respect to each Mortgage Pool and any
     ------------------------------
Distribution  Date  occurring  during  the five  years  beginning  on the  first
Distribution  Date,  100%.  With  respect  to  each  Mortgage  Pool  and for any
Distribution  Date  occurring  on or after  the fifth  anniversary  of the first
Distribution  Date, the related Senior Percentage plus the following  percentage
of the  related  Subordinate  Percentage  for such  Distribution  Date:  for any
Distribution  Date in the first year thereafter,  70%; for any Distribution Date
in the second year thereafter,  60%; for any Distribution Date in the third year
thereafter,  40%; for any Distribution Date in the fourth year thereafter,  20%;
and for any subsequent Distribution Date, 0%; provided,  however, that if on any
of the foregoing  Distribution Dates the Senior Percentage for any Mortgage Pool
exceeds  the  initial  Senior  Percentage  for such  Mortgage  Pool,  the Senior
Prepayment Percentage for each Mortgage Pool on such Distribution Date will once
again equal 100% for such Distribution Date.

     Notwithstanding  the  foregoing,  no  decrease  in  the  Senior  Prepayment
Percentage  for any Mortgage  Pool below the level in effect for the most recent
prior  period  set  forth  in the  paragraph  above  shall be  effective  on any
Distribution  Date if,  as of the first  Distribution  Date as to which any such
decrease  applies,  (i)  the  average  outstanding  principal  balance  on  such
Distribution Date and for the preceding five Distribution  Dates of all Mortgage
Loans that were  delinquent  60 days or more  (including  for this  purpose  any
Mortgage  Loans in foreclosure  and the Scheduled  Payments that would have been
due on Mortgage Loans with respect to which the related  Mortgaged  Property has
been  acquired by the Trust Fund if the related  Mortgage  Loan had  remained in
existence) is greater than or equal to 50% of the applicable  Group  Subordinate
Amount  immediately prior to such Distribution Date or (ii) cumulative  Realized
Losses with respect to the Mortgage  Loans in any Mortgage  Pool exceed (a) with
respect  to  the  Distribution  Date  on the  fifth  anniversary  of  the  first
Distribution  Date, 30% of the related Original Group  Subordinate  Amount,  (b)
with  respect to the  Distribution  Date on the sixth  anniversary  of the first
Distribution  Date, 35% of the related Original Group  Subordinate  Amount,  (c)
with respect to the  Distribution  Date on the seventh  anniversary of the first
Distribution  Date, 40% of the related Original Group  Subordinate  Amount,  (d)
with respect to the  Distribution  Date on the eighth  anniversary  of the first
Distribution Date, 45% of the related Original Group Subordinate Amount, and (e)
with  respect to the  Distribution  Date on the ninth  anniversary  of the first
Distribution  Date or thereafter,  50% of the related Original Group Subordinate
Amount.

     Senior Principal  Distribution  Amount:  For each Certificate Group and any
     --------------------------------------
Distribution Date, the sum of the following amounts:

          (i) the product of (a) the related Senior Percentage for such date and
     (b) the principal portion  (multiplied by the applicable Non-AP Percentage)
     of each  Scheduled  Payment  (without  giving  effect  to any Debt  Service
     Reduction occurring prior to the Bankruptcy Coverage  Termination Date), on
     each Mortgage Loan in the related  Mortgage Pool due during the related Due
     Period;

          (ii) the product of (a) the related Senior  Prepayment  Percentage for
     such  date  and  (b)  each  of the  following  amounts  (multiplied  by the
     applicable  Non-AP  Percentage):  (1)  each  Principal  Prepayment  on  the
     Mortgage Loans in the related  Mortgage Pool  collected  during the related
     Prepayment  Period,  (2)  each  other  unscheduled  collection,   including
     Insurance Proceeds and Net Liquidation Proceeds (other than with respect to
     any Mortgage Loan in the related Mortgage Pool that was finally  liquidated
     during  the  related  Prepayment  Period)   representing  or  allocable  to
     recoveries of principal  received during the related Prepayment Period, and
     (3) the  principal  portion of all proceeds of the purchase of any Mortgage
     Loan  in the  related  Mortgage  Pool  (or,  in  the  case  of a  permitted
     substitution,   amounts  representing  a  principal   adjustment)  actually
     received by the Trustee during the related Prepayment Period;

          (iii) with respect to unscheduled recoveries allocable to principal of
     any Mortgage Loan in the related Mortgage Pool that was finally  liquidated
     during the  related  Prepayment  Period,  the lesser of (a) the related net
     Liquidation  Proceeds allocable to principal  (multiplied by the applicable
     Non-AP  Percentage)  and (b) the product of the related  Senior  Prepayment
     Percentage for such date and the Scheduled Principal Balance (multiplied by
     the applicable Non-AP Percentage) of such related Mortgage Loan at the time
     of liquidation; and

          (iv) any  amounts  described  in  clauses  (i)  through  (iii) for any
     previous Distribution Date that remain unpaid.

     Servicer: Aurora Loan Services Inc. or any successor in interest.
     --------

     Servicing  Advances:  Expenditures  incurred by the Servicer in  connection
     -------------------
with the  liquidation  or  foreclosure of a Mortgage Loan which are eligible for
reimbursement under the Servicing Agreement.

     Servicing  Agreement:  The Servicing Agreement between the Servicer and the
     --------------------
Seller, dated as of February 1, 1999, attached hereto as Exhibit E and any other
servicing  agreement  entered into  between a successor  servicer and the Seller
pursuant to the terms hereof, attached hereto as an exhibit.

     Servicing  Fee: The  Servicing Fee  specified in the  applicable  Servicing
     --------------
Agreement (which shall include any Prepayment Interest Excess).

     Servicing  Fee Rate:  With  respect to any  Servicer,  as  specified in the
     -------------------
applicable Servicing Agreement.

     Servicing  Officer:  Any  officer of the  Master  Servicer  involved  in or
     ------------------
responsible  for the  administration  and  servicing or master  servicing of the
Mortgage Loans whose name appears on a list of servicing  officers  furnished by
the  Master  Servicer  to the  Trustee,  as such  list may from  time to time be
amended.

     Special Hazard Loss: With respect to the Mortgage  Loans,  (x) any Realized
     -------------------
Loss arising out of any direct  physical loss or damage to a Mortgaged  Property
which is caused by or results from any cause, exclusive of any loss covered by a
hazard policy or a flood  insurance  policy required to be maintained in respect
of such  Mortgaged  Property and any loss caused by or resulting from (i) normal
wear  and  tear,  (ii)  conversion  or  other  dishonest  act on the part of the
Trustee, the Master Servicer,  any Servicer or any of their agents or employees,
or (iii) errors in design,  faulty  workmanship or faulty materials,  unless the
collapse of the property or a part  thereof  ensues,  or (y) any  Realized  Loss
arising  from or related to the  presence or  suspected  presence  of  hazardous
wastes,  or hazardous  substances  on a Mortgaged  Property  unless such loss is
covered by a hazard policy or flood  insurance  policy required to be maintained
in  respect  of  such  Mortgaged  Property,  in any  case,  as  reported  by the
applicable Servicer to the Master Servicer.

     Special Hazard Loss Limit: As of the Cut-off Date, $5,720,000, which amount
     -------------------------
shall be reduced from time to time to an amount equal on any  Distribution  Date
to the lesser of (a) the greatest of (i) 1% of the  aggregate  of the  Scheduled
Principal  Balances of the Mortgage  Loans;  (ii) twice the Scheduled  Principal
Balance of the Mortgage Loan having the highest Scheduled Principal Balance, and
(iii) the aggregate  Scheduled  Principal Balances of the Mortgage Loans secured
by Mortgaged  Properties  located in the single  California postal zip code area
having the highest  aggregate  Scheduled  Principal Balance of Mortgage Loans of
any such  postal zip code area and (b) the  Special  Hazard Loss Limit as of the
Closing Date less the amount,  if any, of Special  Hazard  Losses  incurred with
respect to Mortgage Loans since the Closing Date.

     Startup  Day:  The day  designated  as such  pursuant  to Section  10.01(b)
     ------------
hereof.

     Subordinate Certificate: Any Class B Certificate.
     -----------------------

     Subordinate  Certificate Writedown Amount: As to any Distribution Date, the
     -----------------------------------------
amount  by  which  (i)  the  sum of  the  Class  Principal  Amounts  of all  the
Certificates  (after  giving  effect to the  distribution  of principal  and the
application of Realized Losses in reduction of the Certificate Principal Amounts
of the  Certificates  on such  Distribution  Date)  exceeds  (ii) the  aggregate
Scheduled  Principal  Balance of the Mortgage  Loans at the close of the related
Due Period.

     Subordinate Class Percentage: With respect to any Distribution Date and any
     ----------------------------
Class of Subordinate Certificates, the percentage obtained by dividing the Class
Principal Amount of such Class  immediately  prior to such  Distribution Date by
the  aggregate  Certificate  Principal  Amount of all  Subordinate  Certificates
immediately prior to such date.

     Subordinate  Percentage:  With  respect  to  each  Mortgage  Pool  and  any
     -----------------------
Distribution Date, the difference between 100% and the related Senior Percentage
for such Distribution Date.

     Subordinate Prepayment  Percentage:  With respect to each Mortgage Pool and
     ----------------------------------
any  Distribution  Date,  the  difference  between  100% and the related  Senior
Prepayment Percentage for such Distribution Date.

     Subordinate  Principal  Distribution Amount: For each Certificate Group and
     -------------------------------------------
any Distribution Date, the sum of the following:

          (i) the product of (a) the  related  Subordinate  Percentage  for such
     date and (b) the principal  portion  (multiplied by the  applicable  Non-AP
     Percentage) of each Scheduled  Payment  (without  giving effect to any Debt
     Service  Reduction  occurring prior to the applicable  Bankruptcy  Coverage
     Termination  Date) on each Mortgage  Loan in the related  Mortgage Pool due
     during the related Due Period;

          (ii) the product of (a) the related Subordinate  Prepayment Percentage
     for such  date and (b) each of the  following  amounts  (multiplied  by the
     applicable  Non-AP  Percentage):  (1)  each  Principal  Prepayment  on  the
     Mortgage Loans in the related  Mortgage Pool  collected  during the related
     Prepayment  Period,  (2)  each  other  unscheduled  collection,   including
     Insurance Proceeds and Net Liquidation Proceeds (other than with respect to
     any Mortgage Loan in the related Mortgage Pool that was finally  liquidated
     during  the  related  Prepayment  Period)   representing  or  allocable  to
     recoveries of principal  received during the related Prepayment Period, and
     (3) the  principal  portion of all proceeds of the purchase of any Mortgage
     Loan  in the  related  Mortgage  Pool  (or,  in  the  case  of a  permitted
     substitution,   amounts  representing  a  principal   adjustment)  actually
     received by the Trustee during the related Prepayment Period;

          (iii) with respect to unscheduled recoveries allocable to principal of
     any Mortgage Loan in the related Mortgage Pool that was finally  liquidated
     during the related Prepayment Period, the related net Liquidation  Proceeds
     allocable to principal  (multiplied  by the applicable  Non-AP  Percentage)
     less any related amount paid pursuant to subsection (iii) of the definition
     of Senior Principal  Distribution Amount for the related Certificate Group;
     and

          (iv) any  amounts  described  in  clauses  (i)  through  (iii) for any
     previous Distribution Date that remain unpaid;

     TAC Amount: Not applicable.
     ----------

     TAC Certificate: None.
     ---------------

     TAC Component: None.
     -------------

     Tax Matters  Person:  The "tax  matters  person" as  specified in the REMIC
     -------------------
Provisions.

     Termination Price: As defined in Section 7.01 hereof.
     -----------------

     Title Insurance Policy: A title insurance policy maintained with respect to
     ----------------------
a Mortgage Loan.

     Transfer Agreement: As defined in the Mortgage Loan Sale Agreement.
     ------------------

     Transferor:  Each seller of Mortgage Loans to Lehman Capital  pursuant to a
     ----------
Transfer Agreement.

     Trust Fund:  The corpus of the trust  created  pursuant to this  Agreement,
     ----------
consisting  of the  Mortgage  Loans  (other  than any  Retained  Interest),  the
assignment  of the  Depositor's  rights under the Mortgage  Loan Sale  Agreement
(other than any Retained  Interest),  such amounts as shall from time to time be
held in the Collection Account, the Certificate Account, any Escrow Account, the
Insurance  Policies,  any REO Property  and the other items  referred to in, and
conveyed to the Trustee under, Section 2.01(a).

     Trustee:  The Chase  Manhattan  Bank,  not in its  individual  capacity but
     -------
solely as Trustee, or any successor in interest,  or if any successor trustee or
any  co-trustee  shall be  appointed  as herein  provided,  then such  successor
trustee and such co-trustee, as the case may be.

     Trustee Fee: As to any Distribution Date, an amount equal to the product of
     -----------
the  Trustee  Fee Rate and the  aggregate  Scheduled  Principal  Balance  of the
related  Mortgage  Loans as of the  first day of the  related  Due  Period.  The
Trustee Fee shall be calculated separately, by Mortgage Pool.

     Trustee Fee Rate: 0.008% per annum.
     ----------------

     Trust Rate: With respect to each Mortgage Loan, the sum of (i) 6.90%,  (ii)
     ----------
the Servicing Fee Rate, (iii) the Master Servicing Fee Rate and (iv) the Trustee
Fee Rate.

     Undercollateralization Distribution: As defined in Section 5.02(e)(ii).
     -----------------------------------

     Undercollateralized  Group:  With  respect to any  Distribution  Date,  the
     --------------------------
Non-AP Senior  Certificates of any  Certificate  Group as to which the aggregate
Certificate  Principal  Amount  thereof  after  giving  effect to  distributions
pursuant  to Sections  5.02(a)  and (b) on such date is greater  than the Non-AP
Pool Balance of the related Mortgage Pool for such Distribution Date.

     Unscheduled  Principal Amount: As to any Distribution  Date, the sum of the
     -----------------------------
amounts  described in clauses (ii)(b) and (iii) (without regard to the reference
in clause (iii) to the "Senior  Prepayment  Percentage")  of the  definition  of
Senior Principal Distribution Amount.

     Upper  Tier  REMIC:  One of the two  separate  REMICs as  described  in the
     ------------------
Preliminary Statement hereto.

     Voting Interests:  The portion of the voting rights of all the Certificates
     ----------------
that is allocated to any  Certificate  for purposes of the voting  provisions of
this  Agreement.  At all times  during  the term of this  Agreement,  98% of all
Voting Interests shall be allocated to the Certificates  other than the Notional
Certificates  and 2% of all Voting  Interests shall be allocated to the Notional
Certificates.  Voting Interests allocated to the Notional  Certificates shall be
allocated  between the Classes of such  Certificates (and among the Certificates
of each such Class) in proportion to their Class  Notional  Amounts (or Notional
Amounts).  Voting  Interests  shall be  allocated  among  the other  Classes  of
Certificates  (and among the  Certificates  of each such Class) in proportion to
their Class Principal Amounts (or Certificate Principal Amounts).

     Section 1.02. Calculations Respecting Mortgage Loans. Calculations required
                   --------------------------------------
to be made pursuant to this  Agreement  with respect to any Mortgage Loan in the
Trust Fund shall be made based upon current  information  as to the terms of the
Mortgage  Loans and  reports of payments  received  from the  Mortgagor  on such
Mortgage Loans and payments to be made to the Trustee as supplied to the Trustee
by the Master Servicer.  The Trustee shall not be required to recompute,  verify
or recalculate the information supplied to it by the Master Servicer.

                                   ARTICLE II

                              DECLARATION OF TRUST;
                            ISSUANCE OF CERTIFICATES

     Section  2.01.  Creation  and  Declaration  of Trust  Fund;  Conveyance  of
                     -----------------------------------------------------------
Mortgage  Loans.  (a)  Concurrently  with the  execution  and  delivery  of this
- ---------------
Agreement,  the Depositor does hereby transfer,  assign,  set over, deposit with
and otherwise convey to the Trustee, without recourse, subject to Sections 2.02,
2.04,  2.05 and 2.06,  in  trust,  all the  right,  title  and  interest  of the
Depositor  in and to the  Mortgage  Loans.  Such  conveyance  includes,  without
limitation, the right to all distributions of principal and interest received on
or with respect to the  Mortgage  Loans on and after the Cut-off Date other than
(i)  any  amounts  representing  Retained   Interest   and   (ii)   payments  of
principal  and  interest due on or before such date,  and all such  payments due
after such date but  received  prior to such date and  intended  by the  related
Mortgagors to be applied after such date,  together with all of the  Depositor's
right,  title and interest in and to the Collection Account and all amounts from
time to time  credited  to and  the  proceeds  of the  Collection  Account,  the
Certificate  Account  and all  amounts  from  time to time  credited  to and the
proceeds of the Certificate  Account, any Escrow Account established pursuant to
Section  9.06  hereof  and all  amounts  from time to time  credited  to and the
proceeds of any such Escrow Account,  any REO Property and the proceeds thereof,
the  Depositor's  rights under any  Insurance  Policies  related to the Mortgage
Loans, and the Depositor's security interest in any collateral pledged to secure
the Mortgage  Loans,  including  the  Mortgaged  Properties  and any  Additional
Collateral,  and any proceeds of the  foregoing,  to have and to hold, in trust;
and the Trustee  declares  that,  subject to the review  provided for in Section
2.02, it has received and shall hold the Trust Fund, as trustee,  in trust,  for
the benefit and use of the Holders of the  Certificates and for the purposes and
subject  to  the  terms  and  conditions  set  forth  in  this  Agreement,  and,
concurrently  with such receipt,  has caused to be executed,  authenticated  and
delivered to or upon the order of the Depositor, in exchange for the Trust Fund,
Certificates in the authorized  denominations evidencing the entire ownership of
the Trust Fund.

     Concurrently  with  the  execution  and  delivery  of this  Agreement,  the
Depositor does hereby assign to the Trustee all of its rights and interest under
the  Mortgage  Loan Sale  Agreement  (other  than any right to receive  Retained
Interest),  including all rights of the Seller under the Servicing  Agreement to
the extent  assigned under the Mortgage Loan Sale  Agreement,  and delegates its
obligations   thereunder.   The  Trustee  hereby  accepts  such  assignment  and
delegation,  and shall be entitled to exercise all rights of the Depositor under
the Mortgage Loan Sale Agreement as if, for such purpose, it were the Depositor.
The foregoing sale, transfer, assignment,  set-over, deposit and conveyance does
not and is not  intended to result in creation or  assumption  by the Trustee of
any obligation of the Depositor,  the Seller,  or any other Person in connection
with the Mortgage Loans or any other  agreement or instrument  relating  thereto
except as specifically set forth herein.

     (b) In connection  with such transfer and  assignment,  the Depositor  does
hereby  deliver to, and deposit  with, or cause to be delivered to and deposited
with,  the Trustee,  and/or any  custodian  acting on the Trustee's  behalf,  if
applicable, the following documents or instruments with respect to each Mortgage
Loan (each a "Mortgage File") so transferred and assigned:

          (i) with respect to each  Mortgage  Loan,  the original  Mortgage Note
     endorsed without recourse in proper form to the order of the Trustee, or in
     blank  (in  each  case,  with all  necessary  intervening  endorsements  as
     applicable);

          (ii) the original of any  guarantee  executed in  connection  with the
     Mortgage Note, assigned to the Trustee;

          (iii) with  respect  to each  Mortgage  Loan other than a  Cooperative
     Loan, the original recorded  Mortgage with evidence of recording  indicated
     thereon.  If, in connection  with any Mortgage Loan,  the Depositor  cannot
     deliver the Mortgage with evidence of recording  thereon on or prior to the
     Closing Date because of a delay caused by the public recording office where
     such Mortgage has been  delivered for  recordation or because such Mortgage
     has been lost, the Depositor  shall deliver or cause to be delivered to the
     Trustee (or its custodian), in the case of a delay due to recording, a true
     copy of such Mortgage,  pending delivery of the original thereof,  together
     with an Officer's  Certificate of the Depositor certifying that the copy of
     such  Mortgage  delivered to the Trustee (or its  custodian) is a true copy
     and that the  original of such  Mortgage  has been  forwarded to the public
     recording office,  or, in the case of a Mortgage that has been lost, a copy
     thereof  (certified  as  provided  for  under  the laws of the  appropriate
     jurisdiction)  and a written  Opinion of Counsel  acceptable to the Trustee
     and the  Depositor  that an original  recorded  Mortgage is not required to
     enforce the Trustee's interest in the Mortgage Loan;

          (iv) The original of each  assumption,  modification  or  substitution
     agreement,  if  any,  relating  to  the  Mortgage  Loans,  or,  as  to  any
     assumption,   modification  or  substitution   agreement  which  cannot  be
     delivered  on or prior to the Closing Date because of a delay caused by the
     public recording office where such assumption, modification or substitution
     agreement  has  been  delivered  for  recordation,   a  photocopy  of  such
     assumption, modification or substitution agreement, pending delivery of the
     original thereof,  together with an Officer's  Certificate of the Depositor
     certifying that the copy of such  assumption,  modification or substitution
     agreement  delivered to the Trustee (or its  custodian)  is a true copy and
     that the  original  of such  agreement  has been  forwarded  to the  public
     recording office;

          (v)  with  respect  to  each  Non-MERS  Mortgage  Loan  other  than  a
     Cooperative  Loan,  the original  Assignment  of Mortgage for each Mortgage
     Loan;

          (vi) If  applicable,  such  original  intervening  assignments  of the
     Mortgage,   notice  of  transfer  or  equivalent   instrument   (each,   an
     "Intervening Assignment"),  as may be necessary to show a complete chain of
     assignment  from  the  originator,  or,  in  the  case  of  an  Intervening
     Assignment that has been lost, a written  Opinion of Counsel  acceptable to
     the Trustee that such  original  Intervening  Assignment is not required to
     enforce the Trustee's interest in the Mortgage Loans;

          (vii) the original Primary  Mortgage  Insurance Policy or certificate,
     if private mortgage guaranty insurance is required;

          (viii) with  respect to each  Mortgage  Loan other than a  Cooperative
     Loan, the original  mortgagee title insurance policy or attorney's  opinion
     of title and abstract of title;

          (ix) the  original  of any  security  agreement,  chattel  mortgage or
     equivalent  executed in connection  with the Mortgage or as to any security
     agreement, chattel mortgage or their equivalent that cannot be delivered on
     or prior to the  Closing  Date  because  of a delay  caused  by the  public
     recording office where such document has been delivered for recordation,  a
     photocopy  of such  document,  pending  delivery of the  original  thereof,
     together with an Officer's Certificate of the Depositor certifying that the
     copy of such  security  agreement,  chattel  mortgage  or their  equivalent
     delivered  to the  Trustee (or its  custodian)  is a true copy and that the
     original  of such  document  has been  forwarded  to the  public  recording
     office;

          (x)  with  respect  to any  Cooperative  Loan,  the  Cooperative  Loan
     Documents; and

          (xi) in  connection  with any  pledge of  Additional  Collateral,  the
     original  additional  collateral pledge and security  agreement executed in
     connection therewith, assigned to the Trustee.

     The  parties  hereto  acknowledge  and agree  that the form of  endorsement
attached  hereto as  Exhibit  B-4 is  intended  to effect  the  transfer  to the
Trustee,  for the benefit of the  Certificateholders,  of the Mortgage Notes and
the Mortgages.

     (c) (i) Assignments of Mortgage with respect to each Non-MERS Mortgage Loan
other than a Cooperative Loan shall be recorded;  provided,  however,  that such
Assignments  need not be recorded  if, in the Opinion of Counsel  (which must be
Independent  counsel)  acceptable  to  the  Trustee  and  the  Rating  Agencies,
recording  in such states is not required to protect the  Trustee's  interest in
the related Non-MERS Mortgage Loans. Subject to the preceding sentence,  as soon
as  practicable  after  the  Closing  Date  (but in no event  more than 3 months
thereafter  except to the extent delays are caused by the  applicable  recording
office),  the Trustee,  at the expense of the Depositor and with the cooperation
of the  Servicer,  shall cause to be properly  recorded by the  Servicer in each
public recording office where the related Mortgages are recorded each Assignment
of Mortgage  referred to in  subsection  (b)(v) above with respect to a Non-MERS
Mortgage  Loan.  With respect to each  Cooperative  Loan,  the  Trustee,  at the
expense of the Depositor and with the  cooperation of the Servicer,  shall cause
to be taken  such  actions as are  necessary  under  applicable  law in order to
perfect the interest of the Trustee in the related Mortgaged Property.

          (ii) With respect to each MERS  Mortgage  Loan,  the  Trustee,  at the
     expense of the Depositor and with the  cooperation  of the Servicer,  shall
     cause to be taken such actions as are  necessary to cause the Trustee to be
     clearly  identified  as the owner of each such Mortgage Loan on the records
     of MERS for  purposes of the system of recording  transfers  of  beneficial
     ownership of mortgages maintained by MERS.

     (d) In instances where a Title Insurance Policy is required to be delivered
to the Trustee, or to the applicable  Custodian on behalf of the Trustee,  under
clause  (b)(viii)  above and is not so delivered,  the Depositor  will provide a
copy of  such  Title  Insurance  Policy  to the  Trustee,  or to the  applicable
Custodian  on  behalf of the  Trustee,  as  promptly  as  practicable  after the
execution  and delivery  hereof,  but in any case within 180 days of the Closing
Date.

     (e) For  Mortgage  Loans (if any) that have been  prepaid in full after the
Cut-off Date and prior to the Closing Date, the Depositor, in lieu of delivering
the above  documents,  herewith  delivers to the Trustee,  or to the  applicable
Custodian on behalf of the Trustee, an Officer's Certificate which shall include
a  statement  to the effect that all amounts  received in  connection  with such
prepayment  that are  required  to be  deposited  in the  applicable  Collection
Account pursuant to Section 4.01 have been so deposited.  All original documents
that are not  delivered to the Trustee  shall be held by the Master  Servicer or
the  applicable  Servicer  in  trust  for the  benefit  of the  Trustee  and the
Certificateholders.

     Section 2.02. Acceptance of Trust Fund by Trustee:  Review of Documentation
                   -----------------------------------
for Trust Fund. (a) The Trustee, by execution and delivery hereof,  acknowledges
receipt of the Mortgage  Files  pertaining  to the Mortgage  Loans listed on the
Mortgage  Loan  Schedule,  subject to review  thereof by the Trustee,  or by the
applicable  Custodian on behalf of the Trustee,  under this  Section  2.02.  The
Trustee, or the applicable Custodian on behalf of the Trustee,  will execute and
deliver to the Depositor and the Master  Servicer on the Closing Date an Initial
Certification  in the form annexed hereto as Exhibit B-1 (or in the form annexed
to the applicable Custodial Agreement as Exhibit B-1, as applicable).

     (b) Within 45 days after the Closing Date, the applicable  Custodian  will,
on behalf of the  Trustee  and for the  benefit of Holders of the  Certificates,
review each Mortgage File to ascertain that all required  documents set forth in
Section  2.01  have  been  received  and  appear on their  face to  contain  the
requisite  signatures by or on behalf of the  respective  parties  thereto,  and
shall deliver to the Depositor and the Master Servicer an Interim  Certification
in the  form  annexed  hereto  as  Exhibit  B-2 (or in the form  annexed  to the
applicable  Custodial  Agreement  as Exhibit B-2, as  applicable)  to the effect
that, as to each Mortgage Loan listed in the Mortgage Loan Schedule  (other than
any Mortgage Loan prepaid in full or any Mortgage Loan  specifically  identified
in such  certification  as not  covered by such  certification),  (i) all of the
applicable documents specified in Section 2.01(b) are in its possession and (ii)
such  documents  have been  reviewed by it and appear to relate to such Mortgage
Loan. The Trustee, or the applicable  Custodian on behalf of the Trustee,  shall
make sure that the documents  are executed and  endorsed,  but shall be under no
duty  or  obligation  to  inspect,   review  or  examine  any  such   documents,
instruments,  certificates or other papers to determine that the same are valid,
binding,  legally  effective,   properly  endorsed,   genuine,   enforceable  or
appropriate for the represented purpose or that they have actually been recorded
or are in recordable form or that they are other than what they purport to be on
their face.  Neither the Trustee nor any Custodian shall have any responsibility
for verifying the genuineness or the legal effectiveness of or authority for any
signatures of or on behalf of any party or endorser.

     (c) If in the course of the review  described  in  paragraph  (b) above the
Trustee  or  the  applicable  Custodian  discovers  any  document  or  documents
constituting a part of a Mortgage File that is missing,  does not appear regular
on its face (i.e., is mutilated,  damaged, defaced, torn or otherwise physically
altered) or appears to be  unrelated  to the Mortgage  Loans  identified  in the
Mortgage  Loan  Schedule  (each,  a  "Material  Defect"),  the  Trustee,  or the
applicable  Custodian  on behalf of the  Trustee,  shall  promptly  identify the
Mortgage Loan to which such Material  Defect relates in the Interim  Certificate
delivered to the Depositor or the Master  Servicer (and to the Trustee).  Within
90 days of its receipt of such notice,  the Depositor  shall be required to cure
such  Material  Defect (and,  in such event,  the  Depositor  shall  provide the
Trustee  with an  Officer's  Certificate  confirming  that  such  cure  has been
effected).  If the Depositor does not so cure such Material Defect, it shall, if
a loss has been incurred with respect to such Mortgage Loan that would,  if such
Mortgage  Loan were not  purchased  from the Trust Fund,  constitute  a Realized
Loss, and such loss is attributable to the failure of the Depositor to cure such
Material Defect, repurchase the related Mortgage Loan from the Trust Fund at the
Purchase  Price. A loss shall be deemed to be attributable to the failure of the
Depositor to cure a Material  Defect if, as  determined by the  Depositor,  upon
mutual  agreement acting in good faith,  absent such Material Defect,  such loss
would not have been incurred.  Within the two year period  following the Closing
Date,  the Depositor  may, in lieu of  repurchasing  a Mortgage Loan pursuant to
this Section 2.02,  substitute  for such  Mortgage Loan a Qualifying  Substitute
Mortgage  Loan subject to the  provisions  of Section  2.05.  The failure of the
Trustee  or the  applicable  Custodian  to give the notice  contemplated  herein
within 45 days after the Closing Date shall not affect or relieve the  Depositor
of its  obligation to repurchase any Mortgage Loan pursuant to this Section 2.02
or any other  Section of this  Agreement  requiring  the  repurchase of Mortgage
Loans from the Trust Fund.

     (d) Within  180 days  following  the  Closing  Date,  the  Trustee,  or the
applicable  Custodian,  shall deliver to the Depositor and the Master Servicer a
Final Certification  substantially in the form annexed hereto as Exhibit B-3 (or
in the form  annexed to the  applicable  Custodial  Agreement as Exhibit B-3, as
applicable)  evidencing the completeness of the Mortgage Files in its possession
or control, with any exceptions noted thereto.

     (e)  Nothing  in  this  Agreement  shall  be  construed  to  constitute  an
assumption  by the Trust  Fund,  the  Trustee or the  Certificateholders  of any
unsatisfied  duty,  claim  or other  liability  on any  Mortgage  Loan or to any
Mortgagor.

     (f)  Each of the  parties  hereto  acknowledges  that the  Custodian  shall
perform  the   applicable   review  of  the   Mortgage   Loans  and   respective
certifications thereof as provided in this Section 2.02.

     Section 2.03.  Representations  and  Warranties of the  Depositor.  (a) The
                    --------------------------------------------------
Depositor  hereby  represents  and warrants to the  Trustee,  for the benefit of
Certificateholders,  and to the Master Servicer,  as of the Closing Date or such
other date as is specified, that:

          (i) the Depositor is a corporation  duly organized,  validly  existing
     and in good  standing  under the laws  governing its creation and existence
     and has full corporate power and authority to own its property, to carry on
     its  business  as  presently  conducted,  to  enter  into and  perform  its
     obligations under this Agreement, and to create the trust pursuant hereto;

          (ii) the  execution  and delivery by the  Depositor of this  Agreement
     have been duly authorized by all necessary  corporate action on the part of
     the Depositor;  neither the execution and delivery of this  Agreement,  nor
     the consummation of the transactions  herein  contemplated,  nor compliance
     with the provisions hereof, will conflict with or result in a breach of, or
     constitute a default under, any of the provisions of any law,  governmental
     rule, regulation, judgment, decree or order binding on the Depositor or its
     properties or the certificate of incorporation or bylaws of the Depositor;

          (iii) the execution, delivery and performance by the Depositor of this
     Agreement and the consummation of the transactions  contemplated  hereby do
     not  require  the  consent  or  approval  of,  the giving of notice to, the
     registration  with,  or the taking of any other  action in respect  of, any
     state,  federal or other governmental  authority or agency,  except such as
     has been obtained, given, effected or taken prior to the date hereof;

          (iv)  this  Agreement  has been duly  executed  and  delivered  by the
     Depositor and,  assuming due  authorization,  execution and delivery by the
     Trustee and the Master Servicer, constitutes a valid and binding obligation
     of the Depositor enforceable against it in accordance with its terms except
     as such  enforceability  may be subject to (A)  applicable  bankruptcy  and
     insolvency  laws and other similar laws  affecting the  enforcement  of the
     rights  of  creditors  generally  and  (B)  general  principles  of  equity
     regardless  of whether such  enforcement  is  considered in a proceeding in
     equity or at law;

          (v) there are no  actions,  suits or  proceedings  pending  or, to the
     knowledge of the Depositor,  threatened or likely to be asserted against or
     affecting the  Depositor,  before or by any court,  administrative  agency,
     arbitrator or governmental body (A) with respect to any of the transactions
     contemplated  by this  Agreement  or (B) with  respect to any other  matter
     which in the judgment of the Depositor will be determined  adversely to the
     Depositor and will if determined  adversely to the Depositor materially and
     adversely  affect it or its  business,  assets,  operations  or  condition,
     financial  or  otherwise,  or  adversely  affect its ability to perform its
     obligations under this Agreement;

          (vi) immediately  prior to the transfer and assignment of the Mortgage
     Loans to the Trustee, the Depositor was the sole owner of record and holder
     of each Mortgage  Loan,  and the Depositor  had good and  marketable  title
     thereto,  and had full right to transfer and sell each Mortgage Loan to the
     Trustee free and clear,  subject only to (1) liens of current real property
     taxes and assessments not yet due and payable and, if the related Mortgaged
     Property is a condominium  unit, any lien for common  charges  permitted by
     statute,  (2)  covenants,  conditions  and  restrictions,  rights  of  way,
     easements and other matters of public record as of the date of recording of
     such Mortgage  acceptable to mortgage  lending  institutions in the area in
     which the related Mortgaged  Property is located and specifically  referred
     to in the lender's Title  Insurance  Policy or attorney's  opinion of title
     and abstract of title  delivered to the  originator of such Mortgage  Loan,
     and (3) such other matters to which like  properties  are commonly  subject
     which do not,  individually or in the aggregate,  materially interfere with
     the benefits of the security  intended to be provided by the  Mortgage,  of
     any encumbrance,  equity,  participation  interest,  lien, pledge,  charge,
     claim or security interest, and had full right and authority, subject to no
     interest or  participation  of, or agreement with, any other party, to sell
     and assign each Mortgage Loan pursuant to this Agreement.

     (b) The  representations  and warranties of each Transferor with respect to
the related Mortgage Loans in the applicable Transfer Agreement, which have been
assigned to the Trustee  hereunder,  were made as of the date  specified  in the
applicable  Transfer  Agreement  (or  underlying  agreement,  if  such  Transfer
Agreement is in the form of an assignment of a prior  agreement).  To the extent
that any fact,  condition or event with respect to a Mortgage Loan constitutes a
breach of both (i) a  representation  or warranty of the  applicable  Transferor
under the applicable Transfer Agreement and (ii) a representation or warranty of
Lehman Capital under the Mortgage Loan Sale Agreement,  the only right or remedy
of the  Trustee  or of any  Certificateholder  shall be the  Trustee's  right to
enforce  the  obligations  of the  applicable  Transferor  under any  applicable
representation  or  warranty  made by it.  The  Trustee  acknowledges  that  the
representations  and  warranties  of Lehman  Capital in  Section  1.04(b) of the
Mortgage Loan Sale  Agreement are  applicable  only to facts or conditions  that
arise  or  events   that  occur   subsequent   to  the  date  as  of  which  the
representations and warranties with respect to the related Mortgage Loans in the
Transfer  Agreements  were  made,  and which do not  constitute  a breach of any
representation  or warranty made by the applicable  Transferor in the applicable
Transfer Agreement.  The Trustee  acknowledges that Lehman Capital shall have no
obligation  or  liability  with  respect  to any breach of a  representation  or
warranty made by it with respect to the Mortgage Loans if the fact, condition or
event  constituting such breach also constitutes a breach of a representation or
warranty made by the applicable Transferor in the applicable Transfer Agreement,
without regard to whether such Transferor  fulfills its contractual  obligations
in respect of such representation or warranty.  The Trustee further acknowledges
that the Depositor  shall have no  obligation  or liability  with respect to any
breach of any  representation  or warranty  with respect to the  Mortgage  Loans
(except as set forth in Section 2.03(a)(vi)) under any circumstances.

     Section 2.04.  Discovery of Breach.  It is  understood  and agreed that the
                    -------------------
representations  and  warranties  (i) set forth in Section 2.03,  (ii) of Lehman
Capital  set forth in the  Mortgage  Loan Sale  Agreement  and  assigned  to the
Trustee by the  Depositor  hereunder and (iii) of each  Transferor,  assigned by
Lehman Capital to the Depositor pursuant to the Mortgage Loan Sale Agreement and
assigned to the Trustee by the Depositor  hereunder shall each survive  delivery
of the Mortgage  Files and the  Assignment  of Mortgage of each Mortgage Loan to
the Trustee  and shall  continue  throughout  the term of this  Agreement.  Upon
discovery  by either the  Depositor,  the Master  Servicer  or the  Trustee of a
breach  of any  of  such  representations  and  warranties  that  adversely  and
materially affects the value of the related Mortgage Loan, the party discovering
such breach shall give prompt  written  notice to the other  parties.  Within 90
days of the discovery of a breach of any representation or warranty given to the
Trustee by the Depositor or given by Lehman Capital and assigned to the Trustee,
the  Depositor  or Lehman  Capital,  as  applicable,  shall either (a) cure such
breach in all  material  respects,  (b)  repurchase  such  Mortgage  Loan or any
property  acquired in respect  thereof from the Trustee at the Purchase Price or
(c)  within  the two year  period  following  the  Closing  Date,  substitute  a
Qualifying Substitute Mortgage Loan for the affected Mortgage Loan. In the event
of discovery of a breach of any  representation  and warranty of any  Transferor
assigned to the Trustee, the Trustee may enforce its rights under the applicable
Transfer Agreement for the benefit of Certificateholders.

     Section 2.05.  Repurchase,  Purchase or Substitution of Mortgage Loans. (a)
                    -------------------------------------------------------
With respect to any Mortgage Loan repurchased by the Depositor  pursuant to this
Agreement,  by Lehman Capital pursuant to the Mortgage Loan Sale Agreement or by
any Transferor  pursuant to the  applicable  Transfer  Agreement,  the principal
portion of the funds received by the Trustee in respect of such  repurchase of a
Mortgage Loan will be considered a Principal  Prepayment  and shall be deposited
in the Collection Account.  The Trustee,  upon receipt of the full amount of the
Purchase Price for a Deleted Mortgage Loan, or upon receipt of the Mortgage File
for a Qualifying  Substitute  Mortgage Loan  substituted for a Deleted  Mortgage
Loan (and any  applicable  Substitution  Amount),  shall  release or cause to be
released  and  reassign  to the  Depositor,  Lehman  Capital  or the  applicable
Transferor,  as applicable,  the related  Mortgage File for the Deleted Mortgage
Loan and shall execute and deliver such  instruments  of transfer or assignment,
in each case without recourse, representation or warranty, as shall be necessary
to vest in such party or its designee or assignee title to any Deleted  Mortgage
Loan released pursuant hereto, free and clear of all security  interests,  liens
and other  encumbrances  created by this Agreement,  which  instruments shall be
prepared  by the  Trustee  (or its  custodian),  and the  Trustee  shall have no
further  responsibility  with  respect to the  Mortgage  File  relating  to such
Deleted Mortgage Loan.

     (b)  With  respect  to  each  Qualifying  Substitute  Mortgage  Loan  to be
delivered  to the  Trustee  (or its  custodian)  pursuant  to the  terms of this
Article II in exchange  for a Deleted  Mortgage  Loan:  (i) the  Depositor,  the
applicable  Transferor or Lehman  Capital,  as  applicable,  must deliver to the
Trustee (or its  custodian)  the  Mortgage  File for the  Qualifying  Substitute
Mortgage Loan containing the documents set forth in Section 2.01(b) along with a
written  certification  certifying  as to the delivery of such Mortgage File and
containing  the  granting  language set forth in Section  2.01(a);  and (ii) the
Depositor will be deemed to have made, with respect to such Qualified Substitute
Mortgage  Loan,  each  of the  representations  and  warranties  made by it with
respect to the related Deleted  Mortgage Loan. As soon as practicable  after the
delivery of any Qualifying  Substitute Mortgage Loan hereunder,  the Trustee, at
the expense of the Depositor and with the cooperation of the Servicer, shall (i)
with  respect  to a  Qualifying  Substitute  Mortgage  Loan  that is a  Non-MERS
Mortgage  Loan,  cause the Assignment of Mortgage to be recorded by the Servicer
if required pursuant to Section 2.01(c)(i), or (ii) with respect to a Qualifying
Substitute  Mortgage Loan that is a MERS Mortgage  Loan,  cause to be taken such
actions as are  necessary to cause the Trustee to be clearly  identified  as the
owner of each such Mortgage Loan on the records of MERS if required  pursuant to
Section 2.01(c)(ii).

     (c)  Notwithstanding  any other provision of this  Agreement,  the right to
substitute  Mortgage  Loans  pursuant to this Article II shall be subject to the
additional  limitations that no substitution of a Qualifying Substitute Mortgage
Loan for a Deleted  Mortgage  Loan shall be made unless the Trustee has received
an  Opinion  of  Counsel  (at the  expense  of the  party  seeking  to make  the
substitution)  that,  under current law, such  substitution  will not (A) affect
adversely the status of any REMIC  established  hereunder as a REMIC,  or of the
related  "regular  interests" as "regular  interests" in any such REMIC,  or (B)
cause any such  REMIC to  engage in a  "prohibited  transaction"  or  prohibited
contribution pursuant to the REMIC Provisions.

     Section  2.06.  Grant  Clause.  It is intended  that the  conveyance of the
                     -------------
Depositor's right, title and interest in and to property  constituting the Trust
Fund pursuant to this Agreement shall  constitute,  and shall be construed as, a
sale of such  property and not a grant of a security  interest to secure a loan.
However, if such conveyance is deemed to be in respect of a loan, it is intended
that:  (1) the  rights  and  obligations  of the  parties  shall be  established
pursuant to the terms of this Agreement;  (2) the Depositor hereby grants to the
Trustee  for the  benefit of the Holders of the  Certificates  a first  priority
security interest in all of the Depositor's right, title and interest in, to and
under, whether now owned or hereafter acquired,  the Trust Fund and all proceeds
of any and all  property  constituting  the Trust Fund to secure  payment of the
Certificates; and (3) this Agreement shall constitute a security agreement under
applicable  law. If such conveyance is deemed to be in respect of a loan and the
Trust created by this  Agreement  terminates  prior to the  satisfaction  of the
claims of any Person  holding any  Certificate,  the security  interest  created
hereby shall  continue in full force and effect and the Trustee  shall be deemed
to be the  collateral  agent for the benefit of such  Person,  and all  proceeds
shall be distributed as herein provided.

                                  ARTICLE III

                                THE CERTIFICATES

     Section 3.01. The Certificates.  (a) The Certificates  shall be issuable in
                   ----------------
registered  form only and shall be  securities  governed by Article 8 of the New
York Uniform  Commercial Code. The Book-Entry  Certificates will be evidenced by
one or more  certificates,  beneficial  ownership  of which  will be held in the
dollar  denominations  in  Certificate  Principal  Amount or Notional  Principal
Amount, as applicable,  or in the Percentage  Interests,  specified herein. Each
Class of Book-Entry Certificates shall be issued in the minimum denominations in
Certificate  Principal Amount (or Notional Amount)  specified in the Preliminary
Statement hereto and in integral  multiples of $1 in excess thereof.  Each Class
of Non-Book  Entry  Certificates  other than the Residual  Certificate  shall be
issued in definitive,  fully  registered  form in the minimum  denominations  in
Certificate  Principal Amount (or Notional Amount)  specified in the Preliminary
Statement hereto and in integral multiples of $1 in excess thereof. The Residual
Certificate  shall  be  issued  as  a  single   Certificate  and  maintained  in
definitive, fully registered form in a minimum denomination equal to 100% of the
Percentage Interest of such Class. The Certificates may be issued in the form of
typewritten  certificates.  One Certificate of each Class of Certificates  other
than any Class of Residual  Certificates  may be issued in any  denomination  in
excess of the minimum denomination.

     (b) The Certificates shall be executed by manual or facsimile  signature on
behalf of the Trustee by an  authorized  officer.  Each  Certificate  shall,  on
original issue, be  authenticated by the Trustee upon the order of the Depositor
upon receipt by the Trustee of the Mortgage Files  described in Section 2.01. No
Certificate  shall be entitled to any benefit under this Agreement,  or be valid
for any purpose,  unless there  appears on such  Certificate  a  certificate  of
authentication  substantially  in the form  provided for herein,  executed by an
authorized officer of the Trustee or the Authenticating Agent, if any, by manual
signature,  and such  certification  upon any  Certificate  shall be  conclusive
evidence,   and  the  only  evidence,   that  such  Certificate  has  been  duly
authenticated and delivered hereunder.  All Certificates shall be dated the date
of their  authentication.  At any time and from time to time after the execution
and delivery of this Agreement,  the Depositor may deliver Certificates executed
by the Depositor to the Trustee or the  Authenticating  Agent for authentication
and the Trustee or the Authenticating  Agent shall authenticate and deliver such
Certificates as in this Agreement provided and not otherwise.

     Section 3.02.  Registration.  The Trustee is hereby  appointed,  and hereby
                    ------------
accepts its appointment as, Certificate Registrar in respect of the Certificates
and  shall  maintain  books  for  the  registration  and  for  the  transfer  of
Certificates  (the  "Certificate  Register").  The Trustee may appoint a bank or
trust company to act as  Certificate  Registrar.  A  registration  book shall be
maintained for the  Certificates  collectively.  The  Certificate  Registrar may
resign or be  discharged  or removed and a new  successor  may be  appointed  in
accordance with the procedures and  requirements  set forth in Sections 6.06 and
6.07 hereof with respect to the resignation, discharge or removal of the Trustee
and the  appointment  of a successor  Trustee.  The  Certificate  Registrar  may
appoint,  by a  written  instrument  delivered  to the  Holders  and the  Master
Servicer, any bank or trust company to act as co-registrar under such conditions
as  the  Certificate  Registrar  may  prescribe;  provided,  however,  that  the
Certificate   Registrar   shall  not  be  relieved  of  any  of  its  duties  or
responsibilities hereunder by reason of such appointment.

     Section  3.03.  Transfer and Exchange of  Certificates.  (a) A  Certificate
                     --------------------------------------
(other  than  Book-Entry  Certificates  which  shall be subject to Section  3.09
hereof) may be  transferred  by the Holder  thereof only upon  presentation  and
surrender of such  Certificate at the office of the  Certificate  Registrar duly
endorsed or  accompanied  by an  assignment  duly executed by such Holder or his
duly  authorized  attorney  in  such  form  as  shall  be  satisfactory  to  the
Certificate  Registrar.  Upon the transfer of any Certificate in accordance with
the  preceding  sentence,  the  Trustee  shall  execute,  and the Trustee or any
Authenticating  Agent shall  authenticate and deliver to the transferee,  one or
more new  Certificates of the same Class and evidencing,  in the aggregate,  the
same  aggregate   Certificate   Principal   Amount  as  the  Certificate   being
transferred.  No service  charge  shall be made to a  Certificateholder  for any
registration  of transfer of  Certificates,  but the  Certificate  Registrar may
require payment of a sum sufficient to cover any tax or governmental charge that
may be imposed in connection with any registration of transfer of Certificates.

     (b) A Certificate  may be exchanged by the Holder thereof for any number of
new Certificates of the same Class, in authorized denominations, representing in
the  aggregate  the  same  Certificate   Principal  Amount  as  the  Certificate
surrendered,  upon surrender of the Certificate to be exchanged at the office of
the Certificate  Registrar duly endorsed or accompanied by a written  instrument
of transfer duly executed by such Holder or his duly authorized attorney in such
form as is  satisfactory to the Certificate  Registrar.  Certificates  delivered
upon any such exchange will evidence the same obligations,  and will be entitled
to the same rights and privileges, as the Certificates  surrendered.  No service
charge shall be made to a  Certificateholder  for any exchange of  Certificates,
but the  Certificate  Registrar may require payment of a sum sufficient to cover
any tax or  governmental  charge  that may be  imposed  in  connection  with any
exchange of  Certificates.  Whenever any  Certificates  are so  surrendered  for
exchange, the Trustee shall execute, and the Trustee or the Authenticating Agent
shall   authenticate,    date   and   deliver   the   Certificates   which   the
Certificateholder making the exchange is entitled to receive.

     (c) By  acceptance  of a  Restricted  Certificate,  whether  upon  original
issuance or subsequent transfer, each Holder of such a Certificate  acknowledges
the  restrictions  on the  transfer of such  Certificate  set forth  thereon and
agrees that it will transfer such a Certificate only as provided herein.

     The  following  restrictions  shall apply with  respect to the transfer and
registration of transfer of a Restricted  Certificate to a transferee that takes
delivery in the form of a Definitive Certificate:

          (i)  The  Certificate  Registrar  shall  register  the  transfer  of a
     Restricted Certificate if the requested transfer is (x) to the Depositor or
     the Placement  Agent,  an affiliate (as defined in Rule 144(a)(1) under the
     1933 Act) of the  Depositor or the  Placement  Agent or (y) being made to a
     "qualified   institutional  buyer"  as  defined  in  Rule  144A  under  the
     Securities  Act of 1933,  as amended  (the "Act") by a  transferor  who has
     provided  the Trustee with a  certificate  in the form of Exhibit F hereto;
     and

          (ii) The  Certificate  Registrar  shall  register  the  transfer  of a
     Restricted  Certificate  if the  requested  transfer  is  being  made to an
     "accredited  investor" under Rule 501(a)(1),  (2), (3) or (7) under the Act
     by a transferor  who  furnishes  to the Trustee a letter of the  transferee
     substantially in the form of Exhibit G hereto.

     (d) (i) No transfer  of an  ERISA-Restricted  Certificate  in the form of a
Definitive  Certificate  shall be made to any  Person  unless  the  Trustee  has
received (A) a  certificate  substantially  in the form of Exhibit H hereto from
such transferee or (B) an Opinion of Counsel satisfactory to the Trustee and the
Depositor to the effect that the purchase and holding of such a Certificate will
not  constitute  or result in the assets of the Trust  Fund  being  deemed to be
"plan  assets"  subject to the  prohibited  transactions  provisions of ERISA or
Section  4975 of the Code and will not subject the Trustee or the  Depositor  to
any  obligation  in addition to those  undertaken  in the  Agreement;  provided,
however,  that the Trustee will not require such  certificate  or opinion in the
event that, as a result of a change of law or otherwise, counsel satisfactory to
the Trustee has  rendered an opinion to the effect that the purchase and holding
of an  ERISA-Restricted  Certificate by a Plan or a Person that is purchasing or
holding  such a  Certificate  with the assets of a Plan will not  constitute  or
result in a prohibited  transaction under ERISA or Section 4975 of the Code. The
preparation and delivery of the certificate and opinions referred to above shall
not  be  an  expense  of  the  Trust  Fund,   the  Trustee  or  the   Depositor.
Notwithstanding  the foregoing,  no opinion or certificate shall be required for
the initial issuance of the ERISA-Restricted Certificates.

     (e) As a  condition  of the  registration  of  transfer  or exchange of any
Certificate,  the  Certificate  Registrar  may  require the  certified  taxpayer
identification  number of the owner of the  Certificate and the payment of a sum
sufficient to cover any tax or other  governmental  charge imposed in connection
therewith;  provided,  however,  that the  Certificate  Registrar  shall have no
obligation  to require such payment or to determine  whether or not any such tax
or  charge  may  be  applicable.   No  service  charge  shall  be  made  to  the
Certificateholder for any registration, transfer or exchange of Certificate.

     (f) Notwithstanding  anything to the contrary contained herein, no Residual
Certificate may be owned, pledged or transferred,  directly or indirectly, by or
to (i) a  Disqualified  Organization  or  (ii)  an  individual,  corporation  or
partnership  or other person unless such person is (A) not a Non-U.S.  Person or
(B) is a Non-U.S.  Person that holds a Residual  Certificate in connection  with
the conduct of a trade or business  within the United  States and has  furnished
the transferor and the Trustee with an effective  Internal  Revenue Service Form
4224 or successor  form at the time and in the manner  required by the Code (any
such  person who is not covered by clause (A) or (B) above is referred to herein
as a "Non-permitted Foreign Holder").

     Prior to and as a condition of the  registration  of any transfer,  sale or
other  disposition  of a Residual  Certificate,  the proposed  transferee  shall
deliver to the Trustee an affidavit in substantially the form attached hereto as
Exhibit  D-1  representing  and  warranting,   among  other  things,  that  such
transferee is neither a Disqualified Organization, an agent or nominee acting on
behalf of a Disqualified  Organization,  nor a Non-permitted Foreign Holder (any
such transferee,  a "Permitted  Transferee"),  and the proposed transferor shall
deliver to the Trustee an affidavit in substantially the form attached hereto as
Exhibit  D-2. In  addition,  the Trustee may (but shall have no  obligation  to)
require,  prior to and as a condition of any such transfer,  the delivery by the
proposed transferee of an Opinion of Counsel, addressed to the Depositor and the
Trustee satisfactory in form and substance to the Depositor,  that such proposed
transferee or, if the proposed  transferee is an agent or nominee,  the proposed
beneficial owner, is not a Disqualified Organization,  agent or nominee thereof,
or  Non-permitted  Foreign  Holder.  Notwithstanding  the  registration  in  the
Certificate  Register of any transfer,  sale, or other disposition of a Residual
Certificate  to a Disqualified  Organization,  an agent or nominee  thereof,  or
Non-permitted  Foreign  Holder,  such  registration  shall be deemed to be of no
legal force or effect  whatsoever and such Disqualified  Organization,  agent or
nominee  thereof,  or  Non-permitted  Foreign Holder shall not be deemed to be a
Certificateholder for any purpose hereunder,  including, but not limited to, the
receipt of distributions on such Residual Certificate.  The Trustee shall not be
under any liability to any person for any registration or transfer of a Residual
Certificate  to a  Disqualified  Organization,  agent  or  nominee  thereof,  or
Non-permitted  Foreign  Holder or for the  maturity of any  payments due on such
Residual  Certificate  to the Holder thereof or for taking any other action with
respect to such Holder under the  provisions  of the  Agreement,  so long as the
transfer  was  effected in  accordance  with this  Section  3.03(f),  unless the
Trustee shall have actual  knowledge at the time of such transfer or the time of
such payment or other action that the transferee is a Disqualified Organization,
agent or nominee thereof, or Non-permitted  Foreign Holder. The Trustee shall be
entitled  to  recover  from any  Holder  of a  Residual  Certificate  that was a
Disqualified  Organization,  agent or nominee thereof, or Non-permitted  Foreign
Holder  at the time it  became  a  Holder  or any  subsequent  time it  became a
Disqualified  Organization,  agent or nominee thereof, or Non-permitted  Foreign
Holder, all payments made on such Residual  Certificate at and after either such
times (and all costs and expenses, including but not limited to attorneys' fees,
incurred in connection therewith). Any payment (not including any such costs and
expenses) so recovered  by the Trustee  shall be paid and  delivered to the last
preceding Holder of such Residual Certificate.

     If any purported  transferee shall become a registered Holder of a Residual
Certificate  in violation of the provisions of this Section  3.03(f),  then upon
receipt of written  notice to the Trustee that the  registration  of transfer of
such Residual Certificate was not in fact permitted by this Section 3.03(f), the
last preceding  Permitted  Transferee  shall be restored to all rights as Holder
thereof  retroactive  to the  date  of such  registration  of  transfer  of such
Residual Certificate.  The Trustee shall be under no liability to any Person for
any  registration  of  transfer  of a Residual  Certificate  that is in fact not
permitted  by  this  Section  3.03(f),  for  making  any  payment  due  on  such
Certificate to the registered Holder thereof or for taking any other action with
respect to such Holder  under the  provisions  of this  Agreement so long as the
transfer was registered upon receipt of the affidavit described in the preceding
paragraph of this Section 3.03(f).

     (g) Each  Holder of a Residual  Certificate,  by such  Holder's  acceptance
thereof, shall be deemed for all purposes to have consented to the provisions of
this section.  Section  3.04.  Cancellation  of  Certificates.  Any  Certificate
surrendered  for  registration  of transfer or exchange  shall be cancelled  and
retained in accordance with normal retention  policies with respect to cancelled
certificates maintained by the Trustee or the Certificate Registrar.

     Section  3.05.  Replacement  of  Certificates.  If (i) any  Certificate  is
                     -----------------------------
mutilated and is surrendered to the Trustee or any Authenticating  Agent or (ii)
the Trustee or any Authenticating Agent receives evidence to its satisfaction of
the destruction, loss or theft of any Certificate, and there is delivered to the
Trustee  or the  Authenticating  Agent  such  security  or  indemnity  as may be
required by them to save each of them  harmless,  then, in the absence of notice
to the  Depositor  and any  Authenticating  Agent that such  destroyed,  lost or
stolen Certificate has been acquired by a bona fide purchaser, the Trustee shall
execute  and the Trustee or any  Authenticating  Agent  shall  authenticate  and
deliver,  in exchange for or in lieu of any such mutilated,  destroyed,  lost or
stolen  Certificate,  a new Certificate of like tenor and Certificate  Principal
Amount.  Upon the issuance of any new  Certificate  under this Section 3.05, the
Trustee and Authenticating  Agent may require the payment of a sum sufficient to
cover any tax or other  governmental  charge  that may be  imposed  in  relation
thereto and any other  expenses  (including the fees and expenses of the Trustee
or the Authenticating  Agent) connected therewith.  Any replacement  Certificate
issued pursuant to this Section 3.05 shall constitute  complete and indefeasible
evidence of ownership in the  applicable  Trust Fund, as if  originally  issued,
whether or not the lost,  stolen or destroyed  Certificate shall be found at any
time.

     Section 3.06.  Persons Deemed Owners.  Subject to the provisions of Section
                    ---------------------
3.09  with  respect  to  Book-Entry  Certificates,  the  Depositor,  the  Master
Servicer,  the Trustee,  the Certificate  Registrar and any agent of any of them
may treat the Person in whose name any  Certificate is registered upon the books
of the Certificate Registrar as the owner of such Certificate for the purpose of
receiving  distributions  pursuant to  Sections  5.01 and 5.02 and for all other
purposes  whatsoever,  and  neither  the  Depositor,  the Master  Servicer,  the
Trustee,  the  Certificate  Registrar  nor any  agent  of any of them  shall  be
affected by notice to the contrary.

     Section  3.07.  Temporary  Certificates.  (a)  Pending the  preparation  of
                     -----------------------
definitive  Certificates,  upon the order of the  Depositor,  the Trustee  shall
execute and shall  authenticate  and  deliver  temporary  Certificates  that are
printed, lithographed,  typewritten,  mimeographed or otherwise produced, in any
authorized   denomination,   substantially   of  the  tenor  of  the  definitive
Certificates  in lieu of which they are issued and with such  variations  as the
authorized  officers executing such Certificates may determine,  as evidenced by
their execution of such Certificates.

     (b)  If  temporary  Certificates  are  issued,  the  Depositor  will  cause
definitive  Certificates to be prepared without  unreasonable  delay.  After the
preparation  of definitive  Certificates,  the temporary  Certificates  shall be
exchangeable  for  definitive  Certificates  upon  surrender  of  the  temporary
Certificates  at the  office  or  agency of the  Trustee  without  charge to the
Holder.   Upon  surrender  for   cancellation  of  any  one  or  more  temporary
Certificates, the Trustee shall execute and authenticate and deliver in exchange
therefor  a  like   aggregate   Certificate   Principal   Amount  of  definitive
Certificates  of the  same  Class  in the  authorized  denominations.  Until  so
exchanged,  the temporary  Certificates shall in all respects be entitled to the
same benefits under this Agreement as definitive Certificates of the same Class.

     Section 3.08. Appointment of Paying Agent. The Trustee may appoint a Paying
                   ---------------------------
Agent  (which may be the  Trustee)  for the purpose of making  distributions  to
Certificateholders  hereunder.  The Trustee  shall  cause such  Paying  Agent to
execute  and  deliver to the Trustee an  instrument  in which such Paying  Agent
shall agree with the Trustee  that such Paying  Agent will hold all sums held by
it for the payment to Certificateholders in an Eligible Account in trust for the
benefit of the Certificateholders entitled thereto until such sums shall be paid
to the Certificateholders.  All funds remitted by the Trustee to any such Paying
Agent   for   the   purpose   of   making   distributions   shall   be  paid  to
Certificateholders  on each  Distribution Date and any amounts not so paid shall
be returned on such Distribution Date to the Trustee. If the Paying Agent is not
the  Trustee,  the Trustee  shall cause to be remitted to the Paying Agent on or
before the Business Day prior to each  Distribution  Date,  by wire  transfer in
immediately  available funds,  the funds to be distributed on such  Distribution
Date.  Any Paying  Agent  shall be either a bank or trust  company or  otherwise
authorized under law to exercise corporate trust powers.

     Section  3.09.  Book-Entry  Certificates.  (a)  Each  Class  of  Book-Entry
                     ------------------------
Certificates, upon original issuance, shall be issued in the form of one or more
typewritten  Certificates  representing  the  Book-Entry  Certificates,   to  be
delivered to The Depository Trust Company,  the initial Clearing Agency,  by, or
on behalf of, the Depositor.  The  Book-Entry  Certificates  shall  initially be
registered  on the  Certificate  Register  in the  name  of the  nominee  of the
Clearing Agency, and no Certificate Owner will receive a definitive  certificate
representing such Certificate  Owner's interest in the Book-Entry  Certificates,
except as provided in Section 3.09(c).  Unless Definitive Certificates have been
issued to  Certificate  Owners of  Book-Entry  Certificates  pursuant to Section
3.09(c):

          (i) the  provisions  of this  Section  3.09 shall be in full force and
     effect;

          (ii) the  Depositor,  the  Master  Servicer,  the  Paying  Agent,  the
     Registrar  and the  Trustee  may deal  with  the  Clearing  Agency  for all
     purposes   (including  the  making  of   distributions  on  the  Book-Entry
     Certificates) as the authorized  representatives  of the Certificate Owners
     and the Clearing  Agency shall be  responsible  for crediting the amount of
     such  distributions  to the accounts of such Persons entitled  thereto,  in
     accordance with the Clearing Agency's normal procedures;

          (iii) to the extent that the  provisions of this Section 3.09 conflict
     with any other provisions of this Agreement, the provisions of this Section
     3.09 shall control; and

          (iv) the rights of Certificate  Owners shall be exercised only through
     the  Clearing  Agency and the  Clearing  Agency  Participants  and shall be
     limited to those established by law and agreements between such Certificate
     Owners and the Clearing  Agency  and/or the Clearing  Agency  Participants.
     Unless and until  Definitive  Certificates  are issued  pursuant to Section
     3.09(c),  the initial Clearing Agency will make book-entry  transfers among
     the Clearing Agency Participants and receive and transmit  distributions of
     principal of and interest on the Book-Entry  Certificates  to such Clearing
     Agency Participants.

     (b) Whenever notice or other  communication  to the  Certificateholders  is
required under this Agreement,  unless and until Definitive  Certificates  shall
have been issued to Certificate Owners pursuant to Section 3.09(c),  the Trustee
shall give all such notices and  communications  specified herein to be given to
Holders of the Book-Entry Certificates to the Clearing Agency.

     (c) If (i) (A) the  Depositor  advises  the  Trustee  in  writing  that the
Clearing  Agency  is no  longer  willing  or  able  to  discharge  properly  its
responsibilities  with  respect  to the  Book-Entry  Certificates,  and  (B) the
Trustee or the  Depositor  is unable to locate a qualified  successor,  (ii) the
Depositor,  at its  option,  advises  the  Trustee in writing  that it elects to
terminate the book-entry  system through the Clearing  Agency or (iii) after the
occurrence of an Event of Default,  Certificate Owners  representing  beneficial
interests aggregating not less than 50% of the Class Principal Amount of a Class
of  Book-Entry  Certificates  identified  as such to the Trustee by an Officer's
Certificate  from the Clearing Agency advise the Trustee and the Clearing Agency
through the Clearing Agency  Participants in writing that the  continuation of a
book-entry system through the Clearing Agency is no longer in the best interests
of the  Certificate  Owners of a Class of Book-Entry  Certificates,  the Trustee
shall notify or cause the Certificate Registrar to notify the Clearing Agency to
effect notification to all Certificate  Owners,  through the Clearing Agency, of
the  occurrence  of  any  such  event  and  of the  availability  of  Definitive
Certificates  to Certificate  Owners  requesting the same. Upon surrender to the
Trustee of the Book-Entry  Certificates by the Clearing  Agency,  accompanied by
registration instructions from the Clearing Agency for registration, the Trustee
shall issue the Definitive Certificates.  Neither the Transferor nor the Trustee
shall  be  liable  for  any  delay  in  delivery  of such  instructions  and may
conclusively  rely on, and shall be protected in relying on, such  instructions.
Upon  the  issuance  of  Definitive   Certificates  all  references   herein  to
obligations  imposed upon or to be  performed  by the  Clearing  Agency shall be
deemed  to be  imposed  upon  and  performed  by  the  Trustee,  to  the  extent
applicable,  with respect to such Definitive  Certificates and the Trustee shall
recognize  the  holders of the  Definitive  Certificates  as  Certificateholders
hereunder.

                                   ARTICLE IV

                        ADMINISTRATION OF THE TRUST FUND

     Section  4.01.  Collection  Account.  (a) On the Closing  Date,  the Master
                     -------------------
Servicer shall open and shall thereafter  maintain an account held in trust (the
"Collection Account"),  entitled "Aurora Loan Services Inc., as Master Servicer,
in  trust  for  the  benefit  of the  Holders  of  Structured  Asset  Securities
Corporation   Mortgage   Pass-Through   Certificates,   Series  1999-ALS1."  The
Collection  Account shall relate solely to the Certificates  issued by the Trust
Fund  hereunder,  and funds in such  Collection  Account shall not be commingled
with any other monies.

     (b) The  Collection  Account shall be an Eligible  Account.  If an existing
Collection  Account ceases to be an Eligible Account,  the Master Servicer shall
establish a new  Collection  Account that is an Eligible  Account within 30 days
and transfer all funds on deposit in such existing  Collection Account into such
new Collection Account.

     (c) The Master  Servicer  shall give to the Trustee prior written notice of
the name and  address  of the  depository  institution  at which the  Collection
Account is maintained and the account number of such Collection Account. On each
Deposit Date, the entire amount on deposit in the Collection Account (subject to
permitted  withdrawals  set forth in Section  4.02),  excluding such amounts not
included  in the  Available  Distribution  Amount  for  such  Distribution  Date
pursuant to clauses (a) through (g) of paragraph (1) of the definition  thereof,
shall be remitted to the Trustee  for deposit  into the  Certificate  Account by
wire  transfer in  immediately  available  funds.  The Master  Servicer,  at its
option,  may choose to make daily remittances from the Collection Account to the
Trustee for deposit into the Certificate Account.

     (d) The Master  Servicer  shall  deposit or cause to be deposited  into the
Collection  Account,  no later than the Business Day following the Closing Date,
any amounts representing  Scheduled Payments on the Mortgage Loans due after the
Cut-off Date and received by the Master  Servicer on or before the Closing Date.
Thereafter,  the Master  Servicer  shall deposit or cause to be deposited in the
Collection  Account on the  applicable  Remittance  Date the  following  amounts
received  or  payments  made by it (other  than in respect of  principal  of and
interest on the Mortgage Loans due on or before the Cut-Off Date):

          (i)  all  payments  on  account  of  principal,   including  Principal
     Prepayments and late collections, on the Mortgage Loans;

          (ii) all payments on account of interest on the Mortgage  Loans (other
     than payments due prior to the Cut-off Date),  net of the Servicing Fee and
     Master  Servicing Fee with respect to each such Mortgage  Loan, but only to
     the extent of the amount  permitted to be  withdrawn  or withheld  from the
     Collection Account in accordance with Sections 5.04 and 9.21;

          (iii) any  unscheduled  payment or other  recovery  with  respect to a
     Mortgage Loan not otherwise  specified in this paragraph (d), including all
     Net  Liquidation  Proceeds  with  respect  to the  Mortgage  Loans  and REO
     Property,  and all amounts received in connection with the operation of any
     REO Property,  net of any unpaid  Servicing Fees and Master  Servicing Fees
     with respect to such  Mortgage  Loans (but only to the extent of the amount
     permitted  to be  withdrawn  or  withheld  from the  Collection  Account in
     accordance with Sections 5.04 and 9.21);

          (iv) all Insurance Proceeds;

          (v) all Advances made by the Master Servicer or any Servicer  pursuant
     to Section 5.04 or the applicable Servicing Agreement; and

          (vi) all proceeds of any Mortgage Loan purchased by any Person.

     (e) Funds in the Collection Account may be invested in Eligible Investments
(selected by and at the written  direction of the Master  Servicer)  which shall
mature not later than the earlier of (a) the Deposit  Date  (except that if such
Eligible  Investment is an  obligation  of the Trustee or the Paying  Agent,  if
other than the  Trustee,  and such  Collection  Account is  maintained  with the
Trustee  or the Paying  Agent,  if other than the  Trustee,  then such  Eligible
Investment shall mature not later than such applicable Distribution Date) or (b)
the day on which  the  funds  in such  Collection  Account  are  required  to be
remitted to the Trustee for deposit into the Certificate  Account,  and any such
Eligible Investment shall not be sold or disposed of prior to its maturity.  All
such  Eligible  Investments  shall  be made in the name of the  Trustee  (in its
capacity as such) or its  nominee.  All income and gain  realized  from any such
investment  shall be for the benefit of the Master Servicer and shall be subject
to its withdrawal or order from time to time, subject to Section 5.05, and shall
not be part of the Trust Fund.  The amount of any losses  incurred in respect of
any such investments shall be deposited in such Collection Account by the Master
Servicer  out of its own funds,  without  any right of  reimbursement  therefor,
immediately  as  realized.   The  foregoing  requirements  for  deposit  in  the
Collection  Account are exclusive,  it being understood and agreed that, without
limiting the generality of the  foregoing,  payments of interest on funds in the
Collection  Account  and  payments  in the  nature of late  payment  charges  or
assumption  fees need not be deposited by the Master  Servicer in the Collection
Account and may be retained by the Master Servicer or the applicable Servicer as
additional  servicing  compensation.  If the  Master  Servicer  deposits  in the
Collection  Account any amount not required to be deposited  therein,  it may at
any time withdraw  such amount from such  Collection  Account.  In the event the
Master  Servicer does not provide written  direction to the Trustee  pursuant to
this  Section,  all funds on  deposit in the  Collection  Account  shall  remain
uninvested.

     Section 4.02.  Application of Funds in the Collection  Account.  The Master
                    -----------------------------------------------
Servicer may, from time to time, make, or cause to be made, withdrawals from the
Collection Account for the following purposes:

          (i) to reimburse  itself or any Servicer for Advances made by it or by
     such  Servicer  pursuant  to  Section  5.04  or  the  applicable  Servicing
     Agreement; the Master Servicer's right to reimburse itself pursuant to this
     subclause (i) is limited to amounts received on or in respect of particular
     Mortgage  Loans  (including,  for this  purpose,  Liquidation  Proceeds and
     amounts  representing  Insurance  Proceeds  with  respect  to the  property
     subject to the related  Mortgage)  which  represent late recoveries (net of
     the applicable  Servicing Fee and the Master  Servicing Fee) of payments of
     principal or interest  respecting which any such Advance was made, it being
     understood,  in the  case  of  any  such  reimbursement,  that  the  Master
     Servicer's or Servicer's  right thereto shall be prior to the rights of the
     Certificateholders;

          (ii) to reimburse  itself or any Servicer for any  Servicing  Advances
     made by it or by such Servicer that it determines in good faith will not be
     recoverable  from  amounts  representing  late  recoveries  of  payments of
     principal or interest  respecting the particular  Mortgage Loan as to which
     such Servicing  Advance was made or from Liquidation  Proceeds or Insurance
     Proceeds with respect to such Mortgage  Loan, it being  understood,  in the
     case of any such  reimbursement,  that such Master Servicer's or Servicer's
     right thereto shall be prior to the rights of the Certificateholders;

          (iii) to reimburse  itself or any Servicer from  Liquidation  Proceeds
     for  Liquidation  Expenses  and for  amounts  expended  by it  pursuant  to
     Sections  9.20 and 9.22(a) or the  applicable  Servicing  Agreement in good
     faith in connection  with the  restoration of damaged  property and, to the
     extent that Liquidation Proceeds after such reimbursement exceed the unpaid
     principal  balance of the related Mortgage Loan,  together with accrued and
     unpaid interest thereon at the applicable Mortgage Rate less the applicable
     Servicing  Fee and the Master  Servicing  Fee for such Mortgage Loan to the
     Due Date  next  succeeding  the  date of its  receipt  of such  Liquidation
     Proceeds,  to pay to itself  out of such  excess  the  amount of any unpaid
     assumption  fees, late payment  charges or other  Mortgagor  charges on the
     related  Mortgage  Loan and to retain any excess  remaining  thereafter  as
     additional servicing compensation,  it being understood, in the case of any
     such  reimbursement or payment,  that such Master  Servicer's or Servicer's
     right thereto shall be prior to the rights of the Certificateholders;

          (iv)  in the  event  it has  elected  not to  pay  itself  the  Master
     Servicing Fee out of any Mortgagor  payment on account of interest or other
     recovery with respect to a particular Mortgage Loan prior to the deposit of
     such  Mortgagor  payment or recovery in the Collection  Account,  to pay to
     itself the Master Servicing Fee for each  Distribution  Date and any unpaid
     Master Servicing Fees for prior Distribution  Dates, as reduced pursuant to
     Section  5.05,  from any  Mortgagor  payment as to  interest  or such other
     recovery  with  respect to that  Mortgage  Loan,  as is  permitted  by this
     Agreement;

          (v) to reimburse  itself or any Servicer for expenses  incurred by and
     recoverable by or reimbursable  to it or such Servicer  pursuant to Section
     9.04,  9.06,  9.16 or  9.22(a)  or  pursuant  to the  applicable  Servicing
     Agreement,  and to  reimburse  itself for any expenses  reimbursable  to it
     pursuant to Section 10.01(c);

          (vi) to pay to the  applicable  Person,  with respect to each Mortgage
     Loan or REO Property  acquired in respect thereof that has been repurchased
     by such Person pursuant to this Agreement, all amounts received thereon and
     not distributed on the date on which the related repurchase was effected;

          (vii)  subject to Section  5.04, to pay to itself income earned on the
     investment of funds deposited in the Collection Account;

          (viii)  to  make   payments  to  the  Trustee  for  deposit  into  the
     Certificate  Account  in the  amounts  and in the  manner  provided  for in
     Section 4.04;

          (ix) to make  distributions  of the Retained  Interest to the Retained
     Interest Holder on each Distribution Date;

          (x) to make payment to itself and others  pursuant to any provision of
     this Agreement;

          (xi) to withdraw funds deposited in error in the Collection Account;

          (xii) to clear  and  terminate  any  Collection  Account  pursuant  to
     Section 7.02;

          (xiii)  to  reimburse  a  successor  Master  Servicer  (solely  in its
     capacity as successor Master Servicer),  for any fee or advance  occasioned
     by a termination of the Master Servicer,  and the assumption of such duties
     by the  Trustee or a successor  Master  Servicer  appointed  by the Trustee
     pursuant to Section 6.14, in each case to the extent not  reimbursed by the
     terminated Master Servicer,  it being  understood,  in the case of any such
     reimbursement  or  payment,  that the right of the Master  Servicer  or the
     Trustee thereto shall be prior to the rights of the Certificateholders; and

          (xiv) to  reimburse  any  Servicer for such amounts as are due thereto
     under the applicable  Servicing  Agreement and have not been retained by or
     paid to such Servicer to the extent provided in such Servicing Agreement.

     Each  Servicer  shall  be  entitled  to  retain  as  additional   servicing
compensation any Prepayment Penalty Amounts or Prepayment Interest Excess.

     In connection with withdrawals  pursuant to subclauses (i), (iii), (iv) and
(vi) above, the Master Servicer's or Servicer's  entitlement  thereto is limited
to  collections  or other  recoveries on the related  Mortgage  Loan. The Master
Servicer  shall  therefore  keep and  maintain  a separate  accounting  for each
Mortgage Loan it master  services for the purpose of justifying  any  withdrawal
from the Collection  Account it maintains pursuant to such subclause (i), (iii),
(iv) and (vi).

     Section 4.03. Reports to Certificateholders. (a) On each Distribution Date,
                   -----------------------------
the Trustee  shall  deliver or cause to be delivered by first class mail to each
Certificateholder a written report setting forth the following  information,  by
Mortgage  Pool and  Certificate  Group  (on the  basis of  Mortgage  Loan  level
information obtained from the Servicers):

          (i)  the  aggregate  amount  of the  distribution  to be  made on such
     Distribution Date to the Holders of each Class of Certificates,  other than
     any Class of Notional Certificates,  allocable to principal on the Mortgage
     Loans,  including  Liquidation  Proceeds and  Insurance  Proceeds,  stating
     separately  the amount  attributable  to scheduled  principal  payments and
     unscheduled payments in the nature of principal in each Mortgage Pool;

          (ii)  the  aggregate  amount  of the  distribution  to be made on such
     Distribution Date to the Holders of each Class of Certificates  (other than
     any Class of Principal Only Certificates) allocable to interest,  including
     any  Accrual  Amount  added to the Class  Principal  Amount of any Class of
     Accrual Certificates;

          (iii) the  amount,  if any,  of any  distribution  to the Holders of a
     Residual Certificate;

          (iv) (A) the aggregate  amount of any Advances  required to be made by
     or on behalf of the Master  Servicer or any Servicer (or the Trustee)  with
     respect  to such  Distribution  Date,  (B)  the  aggregate  amount  of such
     Advances  actually  made,  and (C) the  amount,  if any, by which (A) above
     exceeds (B) above;

          (v) the  Aggregate  Principal  Balance of the  Mortgage  Loans and the
     Non-AP Pool  Balance of each  Mortgage  Pool as of the close of business on
     the last day of the  related Due Period,  after  giving  effect to payments
     allocated to principal reported under clause (i) above;

          (vi) the Class  Principal  Amount (or Class  Notional  Amount) of each
     Class of Certificates,  to the extent  applicable,  as of such Distribution
     Date after giving effect to payments  allocated to principal reported under
     clause (i) above (and to the addition of any Accrual  Amount in the case of
     any Class of Accrual Certificates), separately identifying any reduction of
     any of the foregoing Certificate Principal Amounts due to Realized Losses:

          (vii) any Realized  Losses realized with respect to the Mortgage Loans
     (x) in the applicable  Prepayment Period and (y) in the aggregate since the
     Cut-off Date, stating separately the amount of Special Hazard Losses, Fraud
     Losses and  Bankruptcy  Losses and the  aggregate  amount of such  Realized
     Losses, and the remaining Special Hazard Loss Amount, Fraud Loss Amount and
     Bankruptcy Loss Amount;

          (viii) the amount of the Master  Servicing  Fees,  Servicing  Fees and
     Trustee Fee paid during the Due Period to which such distribution relates;

          (ix) the number and aggregate  Scheduled Principal Balance of Mortgage
     Loans,  as reported to the Trustee by the Master  Servicer,  (a)  remaining
     outstanding  (b)  delinquent  one month,  (c)  delinquent  two months,  (d)
     delinquent  three  or  more  months,   and  (e)  as  to  which  foreclosure
     proceedings  have been  commenced  as of the close of  business on the last
     Business Day of the calendar month immediately preceding the month in which
     such Distribution Date occurs;

          (x) the deemed principal  balance of each REO Property as of the close
     of business on the last  Business  Day of the  calendar  month  immediately
     preceding the month in which such Distribution Date occurs;

          (xi) with  respect to any  Mortgage  Loan that became an REO  Property
     during the preceding calendar month, the principal balance of such Mortgage
     Loan and the number of such  Mortgage  Loans as of the close of business on
     the Distribution Date in such preceding month;

          (xii) with respect to  substitution of Mortgage Loans in the preceding
     calendar month,  the Scheduled  Principal  Balance of each Deleted Mortgage
     Loan, and of each Qualifying Substitute Mortgage Loan;

          (xiii)  the  aggregate   outstanding   Interest   Shortfalls  and  Net
     Prepayment  Interest  Shortfalls,  if any, for each Class of  Certificates,
     after giving effect to the distribution made on such Distribution Date;

          (xiv) if applicable, the amount of any shortfall (i.e., the difference
     between  the   aggregate   amounts  of   principal   and   interest   which
     Certificateholders  would have received if there were sufficient  available
     amounts in the Certificate  Account and the amounts actually  distributed);
     and

          (xv) any other  "loan-level"  information  for any Mortgage Loans that
     are delinquent  three or more months and any REO Property held by the Trust
     that is reported by the Master Servicer to the Trustee.

     In the case of information  furnished  pursuant to subclauses (i), (ii) and
(viii)  above,  the amounts  shall be expressed as a dollar amount per $1,000 of
original principal amount of Certificates.

     The foregoing  information  and reports shall be prepared and determined by
the Trustee  based solely on Mortgage  Loan data  provided to the Trustee by the
Master Servicer no later than four Business Days prior to the Distribution Date.
In preparing or  furnishing  the Mortgage  Loan data to the Trustee,  the Master
Servicer  shall  be  entitled  to  rely  conclusively  on  the  accuracy  of the
information  or data  regarding the Mortgage  Loans and the related REO Property
that has been provided to the Master  Servicer by each Servicer,  and the Master
Servicer shall not be obligated to verify,  recompute,  reconcile or recalculate
any such information or data.

     On each  Distribution  Date,  the Trustee shall also deliver or cause to be
delivered  by first class mail to the  Depositor  a copy of the  above-described
written  report,  to the  following  address:  Mortgage  Finance  Group,  Lehman
Brothers Inc.,  Three World Financial  Center,  200 Vesey Street,  New York, New
York,  10285,  Attention:  Joseph J.  Kelly,  or to such  other  address  as the
Depositor may designate.

     (b) Upon the reasonable  advance written  request of any  Certificateholder
that is a  savings  and loan,  bank or  insurance  company,  which  request,  if
received by the Trustee, will be promptly forwarded to the Master Servicer,  the
Master Servicer shall provide, or cause to be provided,  (or, to the extent that
such  information or  documentation is not required to be provided by a Servicer
under the applicable Servicing Agreement, shall use reasonable efforts to obtain
such  information  and  documentation  from such Servicer,  and provide) to such
Certificateholder  such  reports  and access to  information  and  documentation
regarding  the Mortgage  Loans as such  Certificateholder  may  reasonably  deem
necessary  to  comply  with  applicable  regulations  of the  Office  of  Thrift
Supervision  or its successor or other  regulatory  authorities  with respect to
investment in the  Certificates;  provided,  however,  that the Master  Servicer
shall be entitled to be  reimbursed  by such  Certificateholder  for such Master
Servicer's actual expenses incurred in providing such reports and access.

     (c) Within 90 days, or such shorter period as may be required by statute or
regulation,  after the end of each calendar year, the Trustee shall send to each
Person  who at any time  during the  calendar  year was a  Certificateholder  of
record,  and make  available to  Certificate  Owners  (identified as such by the
Clearing Agency) in accordance with applicable regulations, a report summarizing
the items  provided  to  Certificateholders  pursuant  to Section  4.03(a) on an
annual basis as may be required to enable such Holders to prepare  their federal
income tax returns.  Such information shall include the amount of original issue
discount  accrued on each Class of Certificates  and  information  regarding the
expenses of the Trust Fund.  The Master  Servicer shall provide the Trustee with
such information as is necessary for the Trustee to prepare such reports.

     Section 4.04.  Certificate  Account.  (a) The Trustee  shall  establish and
                    --------------------
maintain  in its  name,  as  trustee,  a  special  deposit  trust  account  (the
"Certificate   Account"),   to  be  held  in  trust  for  the   benefit  of  the
Certificateholders  until disbursed pursuant to the terms of this Agreement. The
Certificate  Account shall be an Eligible Account.  If the existing  Certificate
Account  ceases to be an Eligible  Account,  the Trustee  shall  establish a new
Certificate  Account  that is an Eligible  Account  within 20 Business  Days and
transfer all funds on deposit in such existing Certificate Account into such new
Certificate  Account.  The  Certificate  Account  shall  relate  solely  to  the
Certificates issued hereunder and funds in the Certificate Account shall be held
separate  and  apart  from and  shall not be  commingled  with any other  monies
including,  without  limitation,  other  monies of the  Trustee  held under this
Agreement.

     (b) The Trustee shall cause to be deposited into the Certificate Account on
the day on which,  or,  if such day is not a  Business  Day,  the  Business  Day
immediately  following  the day on which,  any monies are remitted by the Master
Servicer to the Trustee,  all such amounts.  The Trustee shall make  withdrawals
from the Certificate Account only for the following purposes:

          (i) to withdraw amounts deposited in the Certificate Account in error;

          (ii) to pay itself any investment  income earned with respect to funds
     in the Certificate Account invested in Eligible Investments as set forth in
     subsection (c) below, and to make payments to itself and others pursuant to
     any provision of this Agreement;

          (iii) to make payments of the Master  Servicing Fee (to the extent not
     already  withheld or withdrawn  from the  Collection  Account by the Master
     Servicer) to the Master Servicer;

          (iv) to  make  distributions  to the  Certificateholders  pursuant  to
     Article V; and

          (v) to clear and terminate the Certificate Account pursuant to Section
     7.02.

     (c) The  Trustee  may invest,  or cause to be  invested,  funds held in the
Certificate  Account,  which funds,  if invested,  shall be invested in Eligible
Investments (which may be obligations of the Trustee). All such investments must
mature  no later  than the next  Distribution  Date,  and  shall  not be sold or
disposed of prior to their maturity.  All such Eligible Investments will be made
in the name of the Trustee (in its capacity as such) or its nominee.  All income
and gain realized from any such investment shall be compensation for the Trustee
and shall be subject to its withdrawal on order from time to time. The amount of
any losses  incurred  in respect  of any such  investments  shall be paid by the
Trustee for deposit in the Certificate Account out of its own funds, without any
right of  reimbursement  therefor,  immediately  as realized.  Funds held in the
Certificate Account that are not invested shall be held in cash.

                                   ARTICLE V

                    DISTRIBUTIONS TO HOLDERS OF CERTIFICATES

     Section  5.01.   Distributions  Generally.  (a)  Subject  to  Section  7.01
                      ------------------------
respecting the final distribution on the Certificates, on each Distribution Date
the Trustee or the Paying Agent shall make distributions in accordance with this
Article  V.  Such   distributions   shall  be  made  by  check  mailed  to  each
Certificateholder's  address as it appears on the  Certificate  Register  of the
Certificate  Registrar  (which shall  initially be the Trustee) or, upon written
request  made to the Trustee at least three  Business  Days prior to the related
Distribution  Date  to  any   Certificateholder   owning  an  aggregate  initial
Certificate  Principal  Amount  of at least  $2,500,000,  or, in the case of the
Class 2-AX or Class 3-AX  Certificates,  a Percentage  Interest of 100%, by wire
transfer in immediately  available funds to an account  specified in the request
and at the expense of such Certificateholder;  provided, however, that the final
distribution in respect of any Certificate  shall be made only upon presentation
and surrender of such Certificate at the Corporate Trust Office.  Wire transfers
will be made at the  expense  of the Holder  requesting  such wire  transfer  by
deducting a wire  transfer  fee from the related  distribution.  Notwithstanding
such final  payment  of  principal  of any of the  Certificates,  each  Residual
Certificate will remain  outstanding until the termination of each REMIC and the
payment  in  full  of all  other  amounts  due  with  respect  to  the  Residual
Certificate  and at such time such final  payment in  retirement of any Residual
Certificate  will  be  made  only  upon   presentation  and  surrender  of  such
Certificate at the Corporate Trust Office of the Trustee or at the office of the
New  York  Presenting  Agent.  If  any  payment  required  to  be  made  on  the
Certificates  is to be  made on a day  that is not a  Business  Day,  then  such
payment will be made on the next succeeding Business Day.

     (b)   All    distributions    or   allocations   made   with   respect   to
Certificateholders  within  each  Class  on  each  Distribution  Date  shall  be
allocated among the outstanding Certificates in such Class equally in proportion
to their respective initial  Certificate  Principal Amounts (or initial Notional
Amounts).

     Section  5.02.  Distributions  from the  Certificate  Account.  (a) On each
                     ---------------------------------------------
Distribution  Date,  the Trustee (or the Paying  Agent on behalf of the Trustee)
shall withdraw from the Certificate  Account the Available  Distribution  Amount
with respect to each Mortgage Pool, and shall  distribute  such amount to itself
(in the case of  clause  (i)) and to the  Holders  of  record  of each  Class of
Certificates in the following order of priority:

          (i) from the Available  Distribution Amount for each Mortgage Pool, to
     the  Trustee,  the Trustee Fee  allocable  to such  Mortgage  Pool for such
     Distribution Date;

          (ii) from the Available Distribution Amount for each Mortgage Pool, to
     each Class of Senior  Certificates in the related  Certificate Group (other
     than any Class of Principal  Only  Certificates),  the Accrued  Certificate
     Interest  thereon for such  Distribution  Date,  as reduced by such Class's
     allocable share of any Net Prepayment  Interest  Shortfalls for the related
     Mortgage  Pool for such  Distribution  Date;  provided,  however,  that any
     shortfall in available  amounts for each  Mortgage  Pool shall be allocated
     between the Classes of the related  Certificate  Group in proportion to the
     amount of Accrued Certificate Interest (as so reduced) that would otherwise
     be distributable thereon;

          (iii) from the Available  Distribution  Amount for each Mortgage Pool,
     to each  Class of Senior  Certificates  in the  related  Certificate  Group
     (other than any Class of Principal Only Certificates), any related Interest
     Shortfall for such Distribution Date; provided, however, that any shortfall
     in available  amounts for each Mortgage Pool shall be allocated between the
     Classes of the related  Certificate  Group in  proportion  to the  Interest
     Shortfall for each such Class on such Distribution Date;

          (iv)  from  the  remaining  Available  Distribution  Amount  for  each
     Mortgage Pool, to the Senior  Certificates of the related Certificate Group
     (other than any Class of Notional Certificates), as follows:

               (A) to the  Class  1-A and  Class  1-AP  Certificates,  from  the
          Available  Distribution  Amount for Pool 1 for such Distribution Date,
          in   reduction   of  their   respective   Class   Principal   Amounts,
          concurrently, as follows:

                    (1) to the  Class 1-A  Certificates,  the  Senior  Principal
               Distribution  Amount for Pool 1 for such Distribution Date, until
               the Class Principal Amount thereof has been reduced to zero; and

                    (2) to the  Class  1-AP  Certificates,  the AP  Distribution
               Amount  for Pool 1 for such  Distribution  Date,  until the Class
               Principal Amount thereof has been reduced to zero;

               (B) to the Class 2-A, Class 2-AP and Class R  Certificates,  from
          the  Available  Distribution  Amount for Pool 2 for such  Distribution
          Date,  in  reduction  of their  respective  Class  Principal  Amounts,
          concurrently, as follows:

                    (1) sequentially,  to the Class 2-Aand Class R Certificates,
               in that order, the Senior Principal  Distribution Amount for Pool
               2 for such Distribution Date, until the Class Principal Amount of
               each such Class has been reduced to zero; and

                    (2)  to  the  Class  2-AP  Certificates,  the  AP  Principal
               Distribution  Amount for Pool 2 for such Distribution Date, until
               the Class Principal Amount thereof has been reduced to zero;

               (C) to the  Class  3-A and  Class  3-AP  Certificates,  from  the
          Available  Distribution  Amount for Pool 3 for such Distribution Date,
          in   reduction   of  their   respective   Class   Principal   Amounts,
          concurrently, as follows:

                    (1) to the  Class 3-A  Certificates,  the  Senior  Principal
               Distribution  Amount for Pool 3 for such Distribution Date, until
               the Class Principal Amount thereof has been reduced to zero; and

                    (2) to the  Class  3-AP  Certificates,  the AP  Distribution
               Amount  for Pool 3 for such  Distribution  Date,  until the Class
               Principal Amount thereof has been reduced to zero;

          (v) to the Class 1-AP, Class 2-AP and Class 3-AP Certificates,  to the
     extent of the  remaining  Available  Distribution  Amount for each Mortgage
     Pool, the Class AP Deferred  Amount for such Class and  Distribution  Date,
     until  the  Class  Principal  Amount  thereof  has  been  reduced  to zero;
     provided,  however, that (A) distributions  pursuant to this priority shall
     not exceed the aggregate Subordinate Principal  Distribution Amount for all
     Mortgage  Pools for such date;  (B) such  amounts will not reduce the Class
     Principal  Amounts  of such  Classes;  and (C) in the event  the  aggregate
     Subordinate  Principal  Distribution  Amount  for  all  Mortgage  Pools  is
     insufficient  to fully pay the Class AP Deferred Amount for the Class 1-AP,
     Class 2-AP and Class 3-AP  Certificates,  such amount shall be  distributed
     pro rata to such Classes on the basis of their respective Class AP Deferred
     Amounts; and

          (vi) from the remaining Available Distribution Amount for all Mortgage
     Pools,  subject to the prior  distribution  of amounts  pursuant to Section
     5.02(e) in the case of clauses (C), (F),  (I),  (L), (O) and (R) below,  to
     the Subordinated Certificates, as follows:

               (A)  to  the  Class  B1  Certificates,  the  Accrued  Certificate
          Interest  thereon  for such  Distribution  Date,  as  reduced  by such
          Class's allocable share of any Net Prepayment  Interest Shortfalls for
          such Distribution Date;

               (B) to the Class B1 Certificates, any Interest Shortfall for such
          Class on such Distribution Date;

               (C) to the  Class B1  Certificates,  in  reduction  of the  Class
          Principal Amount thereof, such Class's Subordinate Class Percentage of
          each Subordinate  Principal  Distribution Amount for such Distribution
          Date,  except as provided in Section  5.02(c),  until the  Certificate
          Principal Balance thereof has been reduced to zero;

               (D)  to  the  Class  B2  Certificates,  the  Accrued  Certificate
          Interest  thereon  for such  Distribution  Date,  as  reduced  by such
          Class's allocable share of any Net Prepayment  Interest Shortfalls for
          such Distribution Date;

               (E) to the Class B2 Certificates, any Interest Shortfall for such
          Class on such Distribution Date;

               (F) to the Class B2 Certificates, in reduction of the Certificate
          Principal Amount thereof, such Class's Subordinate Class Percentage of
          each Subordinate  Principal  Distribution Amount for such Distribution
          Date, except as provided in Section 5.02(c), until the Class Principal
          Amount thereof has been reduced to zero;

               (G)  to  the  Class  B3  Certificates,  the  Accrued  Certificate
          Interest  thereon  for such  Distribution  Date,  as  reduced  by such
          Class's allocable share of any Net Prepayment  Interest Shortfalls for
          such Distribution Date;

               (H) to the Class B3 Certificates, any Interest Shortfall for such
          Class on such Distribution Date;

               (I) to the Class B3 Certificates, in reduction of the Certificate
          Principal Amount thereof, such Class's Subordinate Class Percentage of
          each Subordinate  Principal  Distribution Amount for such Distribution
          Date, except as provided in Section 5.02(c), until the Class Principal
          Amount thereof has been reduced to zero;

               (J)  to  the  Class  B4  Certificates,  the  Accrued  Certificate
          Interest  thereon  for such  Distribution  Date,  as  reduced  by such
          Class's allocable share of any Net Prepayment  Interest Shortfalls for
          such Distribution Date;

               (K) to the Class B4 Certificates, any Interest Shortfall for such
          Class on such Distribution Date;

               (L) to the Class B4 Certificates, in reduction of the Certificate
          Principal Amount thereof, such Class's Subordinate Class Percentage of
          each Subordinate  Principal  Distribution Amount for such Distribution
          Date,  except as provided in Section  5.02(c),  until the  Certificate
          Principal Balance thereof has been reduced to zero;

               (M)  to  the  Class  B5  Certificates,  the  Accrued  Certificate
          Interest  thereon  for such  Distribution  Date,  as  reduced  by such
          Class's allocable share of any Net Prepayment  Interest Shortfalls for
          such Distribution Date;

               (N) to the Class B5 Certificates, any Interest Shortfall for such
          Class on such Distribution Date;

               (O) to the Class B5 Certificates, in reduction of the Certificate
          Principal Amount thereof, such Class's Subordinate Class Percentage of
          each Subordinate  Principal  Distribution Amount for such Distribution
          Date, except as provided in Section 5.02(c), until the Class Principal
          Balance thereof has been reduced to zero;

               (P)  to  the  Class  B6  Certificates,  the  Accrued  Certificate
          Interest  thereon  for such  Distribution  Date,  as  reduced  by such
          Class's allocable share of any Net Prepayment  Interest Shortfalls for
          such Distribution Date;

               (Q) to the Class B6 Certificates, any Interest Shortfall for such
          Class on such Distribution Date; and

               (R) to the Class B6 Certificates, in reduction of the Certificate
          Principal Amount thereof, such Class's Subordinate Class Percentage of
          each Subordinate  Principal  Distribution Amount for such Distribution
          Date,  except as provided in Section  5.02(c),  until the  Certificate
          Principal Balance thereof has been reduced to zero.

     (b) Net  Prepayment  Interest  Shortfalls  for each  Mortgage Pool shall be
allocated among the  Certificates of the related  Certificate  Group (other than
any related  Principal Only  Certificates)  pro rata based on (i) in the case of
the Non-AP  Senior  Certificates,  the Accrued  Certificate  Interest  otherwise
distributable  thereon,  and (ii) in the case of the  Subordinate  Certificates,
interest accrued on the related Apportioned Principal Balances.

     (c) (i) If on any Distribution  Date the Credit Support  Percentage for the
Class B1 Certificates  is less than the Original  Credit Support  Percentage for
such Class, then,  notwithstanding  anything to the contrary in Section 5.02(a),
no distribution of amounts described in clauses (ii) and (iii) of the definition
of  Subordinate  Principal  Distribution  Amount  will be made in respect of the
Class  B2,  Class  B3,  Class  B4,  Class B5 or Class  B6  Certificates  on such
Distribution  Date.  (ii)  If  on  any  Distribution  Date  the  Credit  Support
Percentage  for the  Class B2  Certificates  is less  than the  Original  Credit
Support  Percentage  for  such  Class,  then,  notwithstanding  anything  to the
contrary in Section  5.02(a),  no distribution  of amounts  described in clauses
(ii) and (iii) of the definition of Subordinate  Principal  Distribution  Amount
will be made in  respect  of the  Class  B3,  Class  B4,  Class  B5 or  Class B6
Certificates on such  Distribution  Date. (iii) If on any Distribution  Date the
Credit  Support  Percentage  for the  Class  B3  Certificates  is less  than the
Original  Credit  Support  Percentage  for  such  Class,  then,  notwithstanding
anything  to the  contrary  in  Section  5.02(a),  no  distribution  of  amounts
described in clauses (ii) and (iii) of the definition of  Subordinate  Principal
Distribution  Amount will be made in respect of the Class B4,  Class B5 or Class
B6 Certificates on such Distribution  Date. (iv) If on any Distribution Date the
Credit  Support  Percentage  for the  Class  B4  Certificates  is less  than the
Original  Credit  Support  Percentage  for  such  Class,  then,  notwithstanding
anything  to the  contrary  in  Section  5.02(a),  no  distribution  of  amounts
described in clauses (ii) and (iii) of the definition of  Subordinate  Principal
Distribution  Amount  will  be made in  respect  of the  Class  B5 or  Class  B6
Certificates  on such  Distribution  Date. (v) If on any  Distribution  Date the
Credit  Support  Percentage  for the  Class  B5  Certificates  is less  than the
Original  Credit  Support  Percentage  for  such  Class,  then,  notwithstanding
anything  to the  contrary  in  Section  5.02(a),  no  distribution  of  amounts
described in clauses (ii) and (iii) of the definition of  Subordinate  Principal
Distribution Amount will be made in respect of the Class B6 Certificates on such
Distribution Date.

     Any amount not distributed in respect of any Class on any Distribution Date
pursuant to the  immediately  preceding  paragraph  will be allocated  among the
remaining  Subordinate  Classes in  proportion to their  respective  Certificate
Principal Amounts.

     (d) On each  Distribution  Date, the Trustee shall distribute to the Holder
of the Class R  Certificate  any amounts  remaining  in the Upper Tier REMIC for
such  Distribution  Date after application of all amounts described in paragraph
(a) of this Section 5.02. Any distributions pursuant to this paragraph (d) shall
not reduce the Class Principal Amount of the Class R Certificate.

     (e) (i) On each  Distribution  Date prior to the Credit  Support  Depletion
Date but on or  after  the date on which  the  aggregate  Certificate  Principal
Amount of the  Non-AP  Senior  Certificates  of any  Certificate  Group has been
reduced to zero,  amounts otherwise  distributable as principal on each Class of
Subordinate  Certificates  pursuant to Section 5.02(a)(vi),  in reverse order of
priority,  in  respect  of such  Class's  Subordinate  Class  Percentage  of the
Subordinate Principal Distribution Amount for the Mortgage Pool relating to such
retired  Certificates,  shall be  distributed  as principal to the Non-AP Senior
Certificates (other than any Notional Certificates) remaining outstanding, until
the Class Principal Amounts thereof have been reduced to zero,  provided that on
such  Distribution  Date  (a) the  Aggregate  Subordinate  Percentage  for  such
Distribution Date is less than 200% of the Aggregate  Subordinate  Percentage as
of the Cut-off  Date or (b) the  average  outstanding  principal  balance of the
Mortgage Loans in any Mortgage Pool that are delinquent 60 days or more over the
last six months as a  percentage  of the  related  Group  Subordinate  Amount is
greater than or equal to 50%.

               (A) On each Distribution Date on which the aggregate  Certificate
          Principal  Amount  of  the  Non-AP  Senior  Certificates  of  any  two
          Certificate Groups has been reduced to zero, any amounts distributable
          pursuant to this Section  5.02(e)(i) will be  distributed,  as to each
          applicable  Class of Subordinate  Certificates,  in proportion to such
          Class's  Subordinate  Class  Percentage of the  Subordinate  Principal
          Distribution  Amount  for the  Mortgage  Pool  relating  to each  such
          retired Certificate Group.

               (B) On each  Distribution  Date on which any of the Non-AP Senior
          Certificates of each of two Certificate Groups remain outstanding, any
          amounts  distributable  pursuant to this  Section  5.02(e)(i)  will be
          distributed  in  proportion  to the  aggregate  Certificate  Principal
          Amounts of such Certificates of each such Certificate Group.

          (ii) (A) On any  Distribution  Date on  which  any  Certificate  Group
     constitutes   an   Undercollateralized   Group,   all   amounts   otherwise
     distributable  as principal  on the  Subordinate  Certificates,  in reverse
     order of priority  (other than  amounts  necessary to pay Class AP Deferred
     Amounts or unpaid Interest  Shortfalls)  (or,  following the Credit Support
     Depletion Date, such other amounts  described in the immediately  following
     sentence),   will  be   distributed  as  principal  to  the  Non-AP  Senior
     Certificates    (other   than   any   Notional    Certificates)   of   such
     Undercollateralized Group, until the aggregate Certificate Principal Amount
     of such Non-AP  Senior  Certificates  equals the Non-AP Pool Balance of the
     related  Mortgage  Pool  (such  distribution,   an  "Undercollateralization
     Distribution").  In the event that any  Certificate  Group  constitutes  an
     Undercollateralized  Group on any  Distribution  Date  following the Credit
     Support Depletion Date,  Undercollateralization  Distributions will be made
     from any Available  Distribution  Amount for each Mortgage Pool not related
     to an  Undercollateralized  Group remaining after all required amounts have
     been  distributed  to the  Non-AP  Senior  Certificates  of each such other
     Certificate  Group.  In  addition,   the  amount  of  any  unpaid  Interest
     Shortfalls with respect to an Undercollateralized Group on any Distribution
     Date (including any Interest Shortfalls for such Distribution Date) will be
     distributed to the Non-AP Senior  Certificates of such  Undercollateralized
     Group prior to the payment of any Undercollateralization Distributions from
     amounts   otherwise   distributable   as  principal   on  the   Subordinate
     Certificates,  in  reverse  order of  priority  (or,  following  the Credit
     Support Depletion Date, as provided in the preceding sentence).

               (B)  If on any  Distribution  Date  two  Certificate  Groups  are
          Undercollateralized  Groups  and  one  Certificate  Group  is  not  an
          Undercollateralized  Group, the  distributions  described in paragraph
          (ii)(A)  above will be made in  proportion  to the amount by which the
          aggregate   Certificate   Principal   Amount  of  the  Non-AP   Senior
          Certificates,   after  giving  effect  to  distributions  pursuant  to
          Sections  5.02(a)  and  (b)  on  such   Distribution   Date,  of  each
          Undercollateralized  Group  exceeds  the  Non-AP  Pool  Balance of the
          related Mortgage Pool for such Distribution Date.

     Section 5.03.  Allocation of Realized Losses. (a) On any Distribution Date,
                    -----------------------------
(x) the applicable AP Percentage of the principal  portion of each Realized Loss
(other than any Excess Loss) in respect of a Mortgage Loan in each Mortgage Pool
will be allocated to the related Class of Principal Only Certificates  until the
Class Principal  Amount thereof has been reduced to zero; and (y) the applicable
Non-AP Percentage of the principal portion of each Realized Loss (other than any
Excess Loss) in respect of a Mortgage  Loan shall be allocated in the  following
order of priority:

          first, to the Class B6 Certificates,  until the Class Principal Amount
     thereof has been reduced to zero;

          second, to the Class B5 Certificates, until the Class Principal Amount
     thereof has been reduced to zero;

          third,  to the Class B4  Certificates,  until the Component  Principal
     Amount thereof has been reduced to zero;

          fourth, to the Class B3 Certificates, until the Class Principal Amount
     thereof has been reduced to zero;

          fifth, to the Class B2 Certificates,  until the Class Principal Amount
     thereof has been reduced to zero;

          sixth, to the Class B1 Certificates,  until the Class Principal Amount
     thereof has been reduced to zero; and

          seventh,  to  the  Classes  of  Senior  Certificates  of  the  related
     Certificate  Group,  pro rata,  in  accordance  with their Class  Principal
     Amounts;  provided,  that any such loss  allocated  to any Class of Accrual
     Certificates  shall be allocated  (subject to Section 5.03(c)) on the basis
     of the lesser of (x) the Class Principal Amount thereof  immediately  prior
     to the applicable Distribution Date and (y) the Class Certificate Principal
     thereof on the Closing Date (as reduced by any Realized  Losses  previously
     allocated thereto).

     (b) With respect to any Distribution Date, the applicable Non-AP Percentage
of the principal  portion of any Excess Loss in respect of a Mortgage Loan shall
be  allocated,  pro rata,  to the  Subordinate  Certificates  (regardless  which
Mortgage Pool  experienced the loss) and Group 1 Certificates  (in the case of a
Realized Loss in Pool 1), Group 2  Certificates  (in the case of a Realized Loss
in Pool 2) or Group 3  Certificates  (in the case of a Realized  Loss in Pool 3)
and on the  basis  of the  Apportioned  Principal  Balances  of the  Classes  of
Subordinate Certificates and Class Principal Amounts of the Senior Certificates;
provided, that any such loss allocated to any Class of Accrual Certificates (and
any Accrual  Component)  shall be allocated  (subject to Section 5.03(c)) on the
basis of the lesser of (x) the Class Principal Amount thereof  immediately prior
to the applicable  Distribution  Date and (y) the Class Principal Amount thereof
on the Closing  Date (as reduced by any  Realized  Losses  previously  allocated
thereto).  The  applicable AP  Percentage of the principal  portion of an Excess
Loss in a Mortgage Pool will be applied to the related  Class of Principal  Only
Certificates until the Class Principal Amount thereof has been reduced to zero.

     (c) Any Realized Losses  allocated to a Class of  Certificates  pursuant to
Section 5.03(a) or (b) shall be allocated  among the  Certificates of such Class
in proportion to their respective  Certificate Principal Amounts. Any allocation
of Realized  Losses  pursuant to this  paragraph  (c) shall be  accomplished  by
reducing the  Certificate  Principal  Amount of the related  Certificates on the
related Distribution Date in accordance with Section 5.03(d).

     (d) Realized Losses allocated in accordance with this Section 5.03 shall be
allocated on the  Distribution  Date in the month  following  the month in which
such loss was incurred and, in the case of the principal portion thereof,  after
giving effect to distributions  made on such Distribution  Date, except that the
aggregate  amount of  Realized  Losses to be  allocated  to the  Principal  Only
Certificates on such Distribution Date will be taken into account in determining
distributions in respect of any related Class AP Deferred Amount for such date.

     (e) On each Distribution Date, the Subordinate Certificate Writedown Amount
for  such  date  shall  effect  a  corresponding  reduction  in the  Certificate
Principal  Amount  of  the  lowest  ranking  Class  of  outstanding  Subordinate
Certificates, which reduction shall occur on such Distribution Date after giving
effect to distributions made on such Distribution Date.

     (f) In the event  that  there is a  recovery  of an amount  in  respect  of
principal of a Mortgage Loan,  which amount had  previously  been allocated as a
Realized Loss to one or more Classes of Certificates,  each outstanding Class to
which any portion of such Realized Loss had previously  been allocated  shall be
entitled to receive,  on the Distribution  Date in the month following the month
in which such  recovery  is  received,  its pro rata  share  (based on the Class
Principal  Amount thereof) of such recovery,  up to the amount of the portion of
such Realized  Loss  previously  allocated to such Class.  In the event that the
total amount of such recovery  exceeds the amount of Realized Loss  allocated to
the  outstanding  Classes in  accordance  with the  preceding  provisions,  each
outstanding  Class of  Certificates  shall be  entitled  to receive its pro rata
share of the amount of such excess, up to the amount of any unrecovered Realized
Loss previously  allocated to such Class. Any such recovery allocated to a Class
of  Certificates  shall not further reduce the Certificate  Principal  Amount of
such  Certificate.  Any such  amounts not  otherwise  allocated  to any Class of
Certificates,  pursuant  to  this  subsection  shall  be  treated  as  Principal
Prepayments for purposes of this Agreement.

     Section 5.04.  Advances by Master Servicer and Trustee.  (a) Advances shall
                    ---------------------------------------
be  made in  respect  of  each  Deposit  Date as  provided  herein.  If,  on any
Determination  Date, the Master Servicer  determines that any Scheduled Payments
due during the related Due Period  (other than Balloon  Payments)  have not been
received,  the Master  Servicer  shall,  or cause the  applicable  Servicer  to,
advance  such  amount,  less an amount,  if any, to be set forth in an Officer's
Certificate to be delivered to the Trustee on such Determination  Date, which if
advanced the Master Servicer or the applicable Servicer has determined would not
be  recoverable  from  amounts  received  with  respect to such  Mortgage  Loan,
including late payments,  Liquidation Proceeds, Insurance Proceeds or otherwise.
If the Master Servicer  determines that an Advance is required,  it shall on the
Deposit Date immediately  following such  Determination Date either (i) remit to
the Trustee from its own funds (or funds  advanced by the  applicable  Servicer)
for deposit in the Certificate Account immediately  available funds in an amount
equal to such Advance, (ii) cause to be made an appropriate entry in the records
of the  Collection  Account  that  funds in such  account  being held for future
distribution or withdrawal have been, as permitted by this Section 5.04, used by
the Master Servicer to make such Advance,  and remit such immediately  available
funds to the  Trustee  for  deposit  in the  Certificate  Account  or (iii) make
Advances in the form of any combination of clauses (i) and (ii)  aggregating the
amount of such  Advance.  Any funds  being held in the  Collection  Account  for
future distribution to  Certificateholders  and so used shall be replaced by the
Master  Servicer  from its own funds by remittance to the Trustee for deposit in
the Certificate  Account on or before any future Deposit Date to the extent that
funds in the  Certificate  Account  on such  Deposit  Date  shall  be less  than
payments to  Certificateholders  required to be made on the related Distribution
Date.  The Master  Servicer and each Servicer shall be entitled to be reimbursed
from the  Collection  Account for all Advances made by it as provided in Section
4.02.

     (b) In the event that the Master  Servicer  fails for any reason to make an
Advance  required to be made  pursuant to Section  5.04 on or before the Deposit
Date, the Trustee, as successor Master Servicer pursuant to Section 6.14, shall,
on or before the related  Distribution Date, deposit in the Certificate  Account
an amount equal to the excess of (a) Advances  required to be made by the Master
Servicer or any  Servicer  that would have been  deposited  in such  Certificate
Account  over (b) the amount of any Advance  made by the Master  Servicer or any
Servicer with respect to such Distribution  Date;  provided,  however,  that the
Trustee  shall be required to make such Advance only if it is not  prohibited by
law from doing so and it has  determined  that such Advance would be recoverable
from amounts to be received with respect to such Mortgage  Loan,  including late
payments,  Liquidation Proceeds,  Insurance Proceeds, or otherwise.  The Trustee
shall be entitled to be  reimbursed  from the  Certificate  Account for Advances
made by it pursuant to this Section 5.04 as if it were the Master Servicer.

     Section 5.05.  Compensating Interest Payments.  The amount of the Aggregate
                    ------------------------------
Master Servicing  Compensation  payable to the Master Servicer in respect of any
Distribution  Date shall be reduced by the amount of any  Compensating  Interest
Payment for such  Distribution  Date,  but only to the extent such  Compensating
Interest Payment is not actually made by a Servicer on the applicable Remittance
Date.  Such  amount  shall  not  be  treated  as an  Advance  and  shall  not be
reimbursable to the Master Servicer.

                                   ARTICLE VI

                    CONCERNING THE TRUSTEE; EVENTS OF DEFAULT

     Section  6.01.  Duties of  Trustee.  (a) The  Trustee,  except  during  the
                     ------------------
continuance  of an Event of  Default  (of  which a  Responsible  Officer  of the
Trustee shall have actual knowledge), undertakes to perform such duties and only
such duties as are  specifically  set forth in this  Agreement.  Any  permissive
right of the Trustee  provided for in this Agreement shall not be construed as a
duty of the Trustee.  If an Event of Default (of which a Responsible  Officer of
the Trustee shall have actual knowledge) has occurred and has not otherwise been
cured or waived, the Trustee shall exercise such of the rights and powers vested
in it by this  Agreement  and use the same  degree  of care  and  skill in their
exercise as a prudent  Person would exercise or use under the  circumstances  in
the conduct of such Person's own affairs  unless the Trustee is acting as Master
Servicer,  in which  case it shall use the same  degree of care and skill as the
Master Servicer hereunder.

     (b) The Trustee, upon receipt of all resolutions, certificates, statements,
opinions,  reports,  documents,  orders or other  instruments  furnished  to the
Trustee  which  are  specifically  required  to be  furnished  pursuant  to  any
provision of this Agreement, shall examine them to determine whether they are in
the form required by this Agreement;  provided,  however, that the Trustee shall
not  be  responsible  for  the  accuracy  or  content  of any  such  resolution,
certificate,  statement,  opinion,  report,  document, order or other instrument
furnished by the Master Servicer, to the Trustee pursuant to this Agreement, and
shall not be  required  to  recalculate  or  verify  any  numerical  information
furnished to the Trustee pursuant to this Agreement.

     (c)  The  Trustee  shall  not  have  any  liability  arising  out  of or in
connection with this Agreement, except for its negligence or willful misconduct.
No  provision of this  Agreement  shall be construed to relieve the Trustee from
liability for its own negligent action,  its own negligent failure to act or its
own willful misconduct; provided, however, that:

          (i) The Trustee  shall not be  personally  liable with  respect to any
     action  taken,  suffered  or  omitted  to be taken  by it in good  faith in
     accordance  with the consent or  direction  of Holders of  Certificates  as
     provided in Section 6.19 hereof;

          (ii) For all purposes under this  Agreement,  the Trustee shall not be
     deemed to have notice of any Event of Default  (other than resulting from a
     failure by the Master  Servicer (i) to remit funds (or to make Advances) or
     (ii) to furnish information to the Trustee when required to do so) unless a
     Responsible  Officer of the Trustee has actual knowledge  thereof or unless
     written  notice of any event which is in fact such a default is received by
     the Trustee at the Corporate Trust Office,  and such notice  references the
     Holders of the Certificates and this Agreement;

          (iii) No  provision  of this  Agreement  shall  require the Trustee to
     expend or risk its own funds or otherwise incur any financial  liability in
     the performance of any of its duties  hereunder,  or in the exercise of any
     of its rights or powers, if it shall have reasonable  grounds for believing
     that  repayment  of such funds or adequate  indemnity  against such risk or
     liability  is not  reasonably  assured  to it,  and none of the  provisions
     contained  in this  Agreement  shall in any event  require  the  Trustee to
     perform,  or be responsible  for the manner of  performance  of, any of the
     obligations of the Master Servicer under this Agreement  except during such
     time,  if any, as the Trustee shall be the successor to, and be vested with
     the  rights,  duties,  powers and  privileges  of, the Master  Servicer  in
     accordance with the terms of this Agreement; and

          (iv) The Trustee shall not be  responsible  for any act or omission of
     the Master Servicer.

     (d) The Trustee shall have no duty hereunder with respect to any complaint,
claim,  demand,  notice or other document it may receive or which may be alleged
to have been  delivered to or served upon it by the parties as a consequence  of
the  assignment  of any Mortgage Loan  hereunder;  provided,  however,  that the
Trustee shall use its best efforts to remit to the Master  Servicer upon receipt
any such  complaint,  claim,  demand,  notice  or other  document  (i)  which is
delivered  to the  Corporate  Trust  Office  of the  Trustee,  (ii)  of  which a
Responsible Officer has actual knowledge,  and (iii) which contains  information
sufficient to permit the Trustee to make a determination  that the real property
to which such document relates is a Mortgaged Property.

     (e) The Trustee shall not be  personally  liable with respect to any action
taken,  suffered or omitted to be taken by it in good faith in  accordance  with
the  direction of  Certificateholders  of any Class holding  Certificates  which
evidence,  as to such Class,  Percentage Interests aggregating not less than 25%
as to the time,  method and place of conducting  any  proceeding  for any remedy
available to the Trustee,  or exercising  any trust or power  conferred upon the
Trustee, under this Agreement.

     (f) The  Trustee  shall not be  required to expend or risk its own funds or
otherwise  incur  financial  liability for the  performance of any of its duties
hereunder or the exercise of any of its rights or powers if there is  reasonable
ground for  believing  that the  repayment  of such funds or adequate  indemnity
against such risk or liability is not reasonably  assured to it, and none of the
provisions contained in this Agreement shall in any event require the Trustee to
perform,  or be  responsible  for  the  manner  of  performance  of,  any of the
obligations of the Master  Servicer or any Servicer under this Agreement  except
during  such time,  if any,  as the Trustee  shall be the  successor  to, and be
vested with the rights, duties, powers and privileges of, the Master Servicer in
accordance with the terms of this Agreement.

     (g) Subject to Section 4.04, the Trustee shall not be held liable by reason
of any insufficiency in any account (including without limitation the Collection
Amount) held by or on behalf of the Trustee  resulting from any investment  loss
on any  Eligible  Investment  included  therein  (except to the extent  that the
Trustee is the obligor and has defaulted thereon).

     (h) Except as otherwise provided herein, the Trustee shall have no duty (A)
to see to  any  recording,  filing,  or  depositing  of  this  Agreement  or any
agreement  referred  to  herein  or  any  financing  statement  or  continuation
statement  evidencing a security  interest,  or to see to the maintenance of any
such  recording or filing or  depositing  or to any  re-recording,  re-filing or
re-depositing  of any thereof,  (B) to see to any  insurance,  (C) to see to the
payment or discharge of any tax, assessment, or other governmental charge or any
lien or  encumbrance  of any kind  owing with  respect  to,  assessed  or levied
against,  any part of the Trust  Fund other  than from  funds  available  in the
Collection Account or the Certificate  Account,  or (D) to confirm or verify the
contents of any reports or certificates of the Master Servicer  delivered to the
Trustee pursuant to this Agreement  believed by the Trustee to be genuine and to
have been signed or presented by the proper party or parties.

     (i) The Trustee  shall pay, out of its own funds,  but not to exceed in the
aggregate $3,000 per calendar year,  one-half of any fees assessed by the Rating
Agencies after the Closing Date in connection  with  maintaining  the ratings of
the Certificates. Any additional fees in excess of such amounts shall be paid by
the Depositor.

     (j) The Trustee shall not be liable in its individual capacity for an error
of judgment made in good faith by a Responsible Officer or other officers of the
Trustee,   unless  it  shall  be  proved  that  the  Trustee  was  negligent  in
ascertaining the pertinent facts.

     (k) Notwithstanding anything in this Agreement to the contrary, the Trustee
shall not be liable for special,  indirect or consequential losses or damages of
any kind whatsoever (including,  but not limited to, lost profits),  even if the
Trustee has been advised of the likelihood of such loss or damage and regardless
of the form of action.

     Section 6.02.  Certain Matters  Affecting the Trustee.  Except as otherwise
                    --------------------------------------
provided in Section 6.01:

          (i) The Trustee may  request,  and may rely and shall be  protected in
     acting  or   refraining   from  acting  upon  any   resolution,   Officer's
     Certificate,  certificate  of  auditors,  opinion  of  counsel or any other
     certificate,  statement,  instrument,  opinion,  report,  notice,  request,
     consent, order, approval, bond or other paper or document believed by it to
     be genuine  and to have been  signed or  presented  by the proper  party or
     parties;

          (ii) The  Trustee  may  consult  with  counsel  and any  advice of its
     counsel or Opinion of Counsel shall be full and complete  authorization and
     protection  in  respect of any action  taken or  suffered  or omitted by it
     hereunder  in good faith and in  accordance  with such advice or Opinion of
     Counsel;

          (iii) The Trustee shall not be personally liable for any action taken,
     suffered or omitted by it in good faith and reasonably believed by it to be
     authorized or within the  discretion or rights or powers  conferred upon it
     by this Agreement;

          (iv) Unless an Event of Default shall have occurred and be continuing,
     the Trustee shall not be bound to make any investigation  into the facts or
     matters  stated  in any  resolution,  certificate,  statement,  instrument,
     opinion,  report, notice, request,  consent, order, approval, bond or other
     paper or document  (provided the same appears regular on its face),  unless
     requested  in writing  to do so by Holders of at least a majority  in Class
     Principal  Amount (or Class Notional Amount) of each Class of Certificates;
     provided,  however,  that, if the payment  within a reasonable  time to the
     Trustee of the costs,  expenses or liabilities  likely to be incurred by it
     in the making of such investigation is, in the opinion of the Trustee,  not
     reasonably  assured to the  Trustee by the  security  afforded to it by the
     terms of this  Agreement,  the  Trustee may  require  reasonable  indemnity
     against such expense or liability or payment of such estimated  expenses as
     a condition to proceeding.  The reasonable expense thereof shall be paid by
     the Holders requesting such investigation;

          (v) The Trustee may execute any of the trusts or powers  hereunder  or
     perform  any duties  hereunder  either  directly  or by or through  agents,
     custodians, or attorneys,  which agents, custodians or attorneys shall have
     any and all of the rights,  powers,  duties and  obligations of the Trustee
     conferred  on them by such  appointment  provided  that the  Trustee  shall
     continue to be responsible for its duties and obligations  hereunder to the
     extent provided herein,  and provided further that the Trustee shall not be
     responsible  for any misconduct or negligence on the part of any such agent
     or attorney appointed with due care by the Trustee;

          (vi) The Trustee  shall be under no  obligation to exercise any of the
     trusts or powers vested in it by this Agreement or to institute, conduct or
     defend any litigation  hereunder or in relation hereto, in each case at the
     request,  order or direction of any of the  Certificateholders  pursuant to
     the provisions of this Agreement, unless such Certificateholders shall have
     offered to the Trustee reasonable  security or indemnity against the costs,
     expenses and liabilities which may be incurred therein or thereby;

          (vii)  The right of the  Trustee  to  perform  any  discretionary  act
     enumerated  in this  Agreement  shall not be construed  as a duty,  and the
     Trustee  shall not be answerable  for other than its  negligence or willful
     misconduct in the performance of such act; and

          (viii) The Trustee shall not be required to give any bond or surety in
     respect of the  execution  of the Trust Fund  created  hereby or the powers
     granted hereunder.

     Section  6.03.  Trustee Not Liable for  Certificates.  The Trustee makes no
                     ------------------------------------
representations  as to the validity or  sufficiency  of this Agreement or of the
Certificates  (other than the certificate of authentication on the Certificates)
or of any Mortgage  Loan, or related  document save that the Trustee  represents
that,  assuming due  execution and delivery by the other  parties  hereto,  this
Agreement has been duly authorized, executed and delivered by it and constitutes
its valid and binding obligation,  enforceable against it in accordance with its
terms  except  that  such  enforceability  may  be  subject  to  (A)  applicable
bankruptcy and insolvency  laws and other similar laws affecting the enforcement
of the rights of  creditors  generally,  and (B)  general  principles  of equity
regardless of whether such  enforcement  is considered in a proceeding in equity
or at law. The Trustee shall not be  accountable  for the use or  application by
the Depositor of funds paid to the Depositor in  consideration of the assignment
of the  Mortgage  Loans to the  Trust  Fund by the  Depositor  or for the use or
application of any funds deposited into the Collection Account,  the Certificate
Account, any Escrow Account or any other fund or account maintained with respect
to the  Certificates.  The Trustee shall not be responsible  for the legality or
validity of this Agreement or the validity, priority,  perfection or sufficiency
of the security for the Certificates  issued or intended to be issued hereunder.
Except as otherwise  provided herein,  the Trustee shall have no  responsibility
for filing any financing or  continuation  statement in any public office at any
time or to otherwise perfect or maintain the perfection of any security interest
or lien granted to it hereunder or to record this Agreement.

     Section 6.04.  Trustee May Own Certificates.  The Trustee and any Affiliate
                    ----------------------------
or agent of the Trustee in its  individual or any other  capacity may become the
owner or pledgee of  Certificates  and may  transact  banking and trust with the
other  parties  hereto with the same rights it would have if it were not Trustee
or such agent.

     Section 6.05.  Eligibility  Requirements for Trustee. The Trustee hereunder
                    -------------------------------------
shall  at all  times  be (i) an  institution  insured  by the  FDIC  and  (ii) a
corporation or national banking association,  organized and doing business under
the laws of any State or the United  States of  America,  authorized  under such
laws to exercise  corporate trust powers,  having a combined capital and surplus
of not less than  $50,000,000  and  subject to  supervision  or  examination  by
federal or state authority.  If such corporation or national banking association
publishes  reports of  condition  at least  annually,  pursuant to law or to the
requirements of the aforesaid supervising or examining authority,  then, for the
purposes of this Section,  the combined  capital and surplus of such corporation
or national banking  association  shall be deemed to be its combined capital and
surplus as set forth in its most recent  report of  condition so  published.  In
case at any time the  Trustee  shall cease to be  eligible  in  accordance  with
provisions of this Section,  the Trustee shall resign  immediately in the manner
and with the effect specified in Section 6.06.

     Section 6.06.  Resignation  and Removal of Trustee.  (a) The Trustee may at
                    -----------------------------------
any time  resign  and be  discharged  from the trust  hereby  created  by giving
written notice thereof to the Depositor and the Master Servicer.  Upon receiving
such notice of  resignation,  the Depositor  will  promptly  appoint a successor
trustee by written  instrument,  one copy of which instrument shall be delivered
to the resigning Trustee,  one copy to the successor trustee and one copy to the
Master Servicer.  If no successor trustee shall have been so appointed and shall
have  accepted  appointment  within 30 days after the  giving of such  notice of
resignation,   the  resigning  Trustee  may  petition  any  court  of  competent
jurisdiction for the appointment of a successor trustee.

     (b) If at any time (i) the Trustee shall cease to be eligible in accordance
with the  provisions  of  Section  6.05 and shall fail to resign  after  written
request  therefor by the Depositor,  (ii) the Trustee shall become  incapable of
acting,  or shall be  adjudged a bankrupt  or  insolvent,  or a receiver  of the
Trustee or of its property shall be appointed,  or any public officer shall take
charge or control of the  Trustee or of its  property or affairs for the purpose
of  rehabilitation,  conservation  or  liquidation,  (iii) a tax is  imposed  or
threatened  with  respect to the Trust Fund by any state in which the Trustee or
the Trust Fund held by the Trustee is located,  or (iv) the continued use of the
Trustee  would result in a downgrading  of the rating by the Rating  Agencies of
any Class of  Certificates  with a rating,  then the Depositor  shall remove the
Trustee and appoint a successor trustee by written instrument, one copy of which
instrument  shall  be  delivered  to the  Trustee  so  removed,  one copy to the
successor trustee and one copy to the Master Servicer.

     (c) The  Holders of more than 50% of the Class  Principal  Amount (or Class
Notional  Amount)  of each Class of  Certificates  may at any time upon 30 days'
written  notice to the Trustee and to the  Depositor  remove the Trustee by such
written  instrument,  signed  by such  Holders  or their  attorney-in-fact  duly
authorized,  one copy of which  instrument  shall be delivered to the Depositor,
one copy to the  Trustee so removed  and one copy to the  Master  Servicer;  the
Depositor shall thereupon use its best efforts to appoint a mutually  acceptable
successor trustee in accordance with this Section.

     (d)  Any  resignation  or  removal  of the  Trustee  and  appointment  of a
successor trustee pursuant to any of the provisions of this Section shall become
effective upon acceptance of appointment by the successor trustee as provided in
Section 6.07.

     Section 6.07.  Successor  Trustee.  (a) Any successor  trustee appointed as
                    ------------------
provided  in  Section  6.06  shall  execute,  acknowledge  and  deliver  to  the
Depositor,  the Master  Servicer and to its  predecessor  trustee an  instrument
accepting such appointment  hereunder,  and thereupon the resignation or removal
of the predecessor  trustee shall become  effective and such successor  trustee,
without any further act, deed or conveyance,  shall become fully vested with all
the rights,  powers, duties and obligations of its predecessor  hereunder,  with
like effect as if originally  named as trustee herein.  The predecessor  trustee
shall  deliver to the  successor  trustee all Mortgage  Files and  documents and
statements  related to each Mortgage Files held by it hereunder,  and shall duly
assign, transfer, deliver and pay over to the successor trustee the entire Trust
Fund,  together with all  necessary  instruments  of transfer and  assignment or
other documents  properly executed necessary to effect such transfer and such of
the  record or copies  thereof  maintained  by the  predecessor  trustee  in the
administration  hereof as may be  requested by the  successor  trustee and shall
thereupon  be  discharged  from  all  duties  and  responsibilities  under  this
Agreement.  In addition,  the Master Servicer and the predecessor  trustee shall
execute  and  deliver  such other  instruments  and do such other  things as may
reasonably  be  required  to more fully and  certainly  vest and  confirm in the
successor trustee all such rights, powers, duties and obligations.

     (b) No  successor  trustee  shall  accept  appointment  as provided in this
Section unless at the time of such appointment  such successor  trustee shall be
eligible under the provisions of Section 6.05.

     (c) Upon  acceptance of appointment  by a successor  trustee as provided in
this Section,  the Master  Servicer  shall mail notice of the succession of such
trustee  hereunder to all Holders of Certificates at their addresses as shown in
the  Certificate  Register  and to the Rating  Agencies.  The  expenses  of such
mailing shall be borne by the Master Servicer.

     Section 6.08. Merger or Consolidation of Trustee. Any Person into which the
                   ----------------------------------
Trustee  may be  merged  or with  which it may be  consolidated,  or any  Person
resulting  from any merger,  conversion  or  consolidation  to which the Trustee
shall be a party,  or any Persons  succeeding  to the  business of the  Trustee,
shall be the successor to the Trustee hereunder, without the execution or filing
of any  paper  or any  further  act on the  part of any of the  parties  hereto,
anything herein to the contrary notwithstanding, provided that such Person shall
be eligible under the provisions of Section 6.05.

     Section 6.09. Appointment of Co-Trustee, Separate Trustee or Custodian. (a)
                   --------------------------------------------------------
Notwithstanding  any other  provisions  hereof,  at any time,  the Trustee,  the
Depositor  or the  Certificateholders  evidencing  more  than  50% of the  Class
Principal Amount (or Class Notional Amount) of each Class of Certificates  shall
each have the power  from time to time to  appoint  one or more  Persons  to act
either as co-trustees jointly with the Trustee,  or as separate trustees,  or as
custodians, for the purpose of holding title to, foreclosing or otherwise taking
action with respect to any Mortgage Loan outside the state where the Trustee has
its principal  place of business  where such  separate  trustee or co-trustee is
necessary or advisable  (or the Trustee has been advised by the Master  Servicer
that such separate  trustee or  co-trustee is necessary or advisable)  under the
laws of any state in which a property securing a Mortgage Loan is located or for
the purpose of otherwise  conforming to any legal  requirement,  restriction  or
condition in any state in which a property  securing a Mortgage  Loan is located
or in any state in which any portion of the Trust Fund is located.  The separate
Trustees,   co-trustees,  or  custodians  so  appointed  shall  be  trustees  or
custodians  for the  benefit of all the  Certificateholders  and shall have such
powers,  rights  and  remedies  as  shall  be  specified  in the  instrument  of
appointment;  provided,  however,  that no such  appointment  shall, or shall be
deemed to,  constitute the appointee an agent of the Trustee.  The obligation of
the Trustee to make Advances  pursuant to Section 5.04 and 6.14 hereof shall not
be affected or assigned by the appointment of a co-trustee.

     (b) Every separate trustee,  co-trustee, and custodian shall, to the extent
permitted by law, be appointed and act subject to the following  provisions  and
conditions:

          (i) all powers,  duties,  obligations  and rights  conferred  upon the
     Trustee in respect of the  receipt,  custody and payment of moneys shall be
     exercised solely by the Trustee;

          (ii) all other rights,  powers,  duties and  obligations  conferred or
     imposed upon the Trustee  shall be conferred or imposed upon and  exercised
     or  performed  by the Trustee and such  separate  trustee,  co-trustee,  or
     custodian  jointly,  except  to  the  extent  that  under  any  law  of any
     jurisdiction  in which any  particular  act or acts are to be performed the
     Trustee shall be incompetent or unqualified to perform such act or acts, in
     which event such rights,  powers,  duties and  obligations,  including  the
     holding  of title to the  Trust  Fund or any  portion  thereof  in any such
     jurisdiction,  shall be exercised and  performed by such separate  trustee,
     co-trustee, or custodian;

          (iii) no trustee or custodian  hereunder shall be personally liable by
     reason of any act or omission of any other trustee or custodian  hereunder;
     and

          (iv) the Trustee or the Certificateholders evidencing more than 50% of
     the Aggregate  Voting  Interests of the Certificates may at any time accept
     the resignation of or remove any separate trustee, co-trustee or custodian,
     so appointed by it or them, if such resignation or removal does not violate
     the other terms of this Agreement.

     (c) Any notice,  request or other  writing  given to the  Trustee  shall be
deemed to have been given to each of the then separate trustees and co-trustees,
as  effectively  as if given to each of them.  Every  instrument  appointing any
separate trustee,  co-trustee or custodian shall refer to this Agreement and the
conditions of this Article VI. Each separate  trustee and  co-trustee,  upon its
acceptance of the trusts conferred, shall be vested with the estates or property
specified in its instrument of  appointment,  either jointly with the Trustee or
separately,  as may be provided  therein,  subject to all the provisions of this
Agreement,  specifically including every provision of this Agreement relating to
the conduct of,  affecting  the liability  of, or affording  protection  to, the
Trustee. Every such instrument shall be filed with the Trustee.

     (d) Any  separate  trustee,  co-trustee  or  custodian  may,  at any  time,
constitute  the  Trustee  its  agent or  attorney-in-fact  with  full  power and
authority, to the extent not prohibited by law, to do any lawful act under or in
respect of this  Agreement on its behalf and in its name.  The Trustee shall not
be responsible for any action or inaction of any separate trustee, co-trustee or
custodian.  If any separate  trustee,  co-trustee or custodian shall die, become
incapable  of acting,  resign or be  removed,  all of its  estates,  properties,
rights,  remedies and trusts  shall vest in and be exercised by the Trustee,  to
the extent  permitted  by law,  without the  appointment  of a new or  successor
trustee.

     (e) No  separate  trustee,  co-trustee  or  custodian  hereunder  shall  be
required to meet the terms of eligibility  as a successor  trustee under Section
6.05 hereunder and no notice to  Certificateholders  of the appointment shall be
required under Section 6.07 hereof.

     (f) The Trustee agrees to instruct the  co-trustees,  if any, to the extent
necessary to fulfill the Trustee's obligations hereunder.

     (g) The Trustee shall pay the reasonable compensation of the co-trustees to
the extent,  and in  accordance  with the  standards,  specified in Section 6.12
hereof  (which  compensation  shall not reduce any  compensation  payable to the
Trustee under such Section).

     Section  6.10.  Authenticating  Agents.  (a) The Trustee may appoint one or
                     ----------------------
more  Authenticating  Agents which shall be  authorized  to act on behalf of the
Trustee  in  authenticating  Certificates.  Wherever  reference  is made in this
Agreement to the  authentication of Certificates by the Trustee or the Trustee's
certificate  of  authentication,  such  reference  shall be  deemed  to  include
authentication  on  behalf  of the  Trustee  by an  Authenticating  Agent  and a
certificate  of  authentication   executed  on  behalf  of  the  Trustee  by  an
Authenticating  Agent. Each Authenticating Agent must be a corporation organized
and doing  business  under the laws of the  United  States of  America or of any
state, having a combined capital and surplus of at least $15,000,000, authorized
under such laws to do a trust business and subject to supervision or examination
by federal or state authorities.

     (b) Any  Person  into  which  any  Authenticating  Agent  may be  merged or
converted or with which it may be consolidated, or any Person resulting from any
merger, conversion or consolidation to which any Authenticating Agent shall be a
party,  or  any  Person  succeeding  to the  corporate  agency  business  of any
Authenticating  Agent, shall continue to be the Authenticating Agent without the
execution  or filing of any paper or any  further act on the part of the Trustee
or the Authenticating Agent.

     (c) Any  Authenticating  Agent may at any time resign by giving at least 30
days' advance  written  notice of  resignation to the Trustee and the Depositor.
The Trustee may at any time terminate the agency of any Authenticating  Agent by
giving  written  notice  of  termination  to such  Authenticating  Agent and the
Depositor. Upon receiving a notice of resignation or upon such a termination, or
in case at any time any  Authenticating  Agent  shall  cease to be  eligible  in
accordance  with the  provisions of this Section 6.10, the Trustee may appoint a
successor Authenticating Agent, shall give written notice of such appointment to
the  Depositor  and shall  mail  notice of such  appointment  to all  Holders of
Certificates.   Any  successor  Authenticating  Agent  upon  acceptance  of  its
appointment  hereunder shall become vested with all the rights,  powers,  duties
and  responsibilities  of its  predecessor  hereunder,  with  like  effect as if
originally  named as  Authenticating  Agent. No successor  Authenticating  Agent
shall be appointed unless eligible under the provisions of this Section 6.10. No
Authenticating Agent shall have responsibility or liability for any action taken
by it as such at the direction of the Trustee. Any Authenticating Agent shall be
entitled  to  reasonable  compensation  for  its  services  and,  if paid by the
Trustee, it shall be a reimbursable expense pursuant to Section 6.12.

     Section 6.11.  Indemnification  of Trustee.  The Trustee and its directors,
                    ---------------------------
officers,  employees  and agents shall be entitled to  indemnification  from the
Trust Fund for any loss,  liability or expense  incurred in connection  with any
legal proceeding and incurred without  negligence or willful misconduct on their
part, arising out of, or in connection with, the acceptance or administration of
the trusts  created  hereunder,  including  the costs and  expenses of defending
themselves  against any claim in connection  with the exercise or performance of
any of their powers or duties hereunder, provided that:

          (i) with respect to any such claim,  the Trustee  shall have given the
     Depositor,  the Master  Servicer  and the Holders  written  notice  thereof
     promptly after the Trustee shall have knowledge thereof;

          (ii) while maintaining control over its own defense, the Trustee shall
     cooperate and consult  fully with the Depositor in preparing  such defense;
     and

          (iii)  notwithstanding  anything to the contrary in this Section 6.11,
     the Trust Fund shall not be liable for  settlement of any such claim by the
     Trustee  entered into  without the prior  consent of the  Depositor,  which
     consent shall not be unreasonably withheld.

     The  provisions of this Section 6.11 shall survive any  termination of this
Agreement and the  resignation  or removal of the Trustee and shall be construed
to  include,  but not be limited  to any loss,  liability  or expense  under any
environmental law.

     Section 6.12.  Fees and Expenses of Trustee.  The Trustee shall be entitled
                    ----------------------------
to the Trustee Fee (which shall not be limited by any provision of law in regard
to the  compensation of a trustee of an express  trust),  to the extent provided
herein,  and in  addition,  the Trustee  shall be  entitled  to receive,  and is
authorized  to pay to  itself  the  amount of  income  or gain  earned  from the
investment of funds in the Certificate Account.

     Section 6.13.  Collection of Monies. Except as otherwise expressly provided
                    --------------------
in this  Agreement,  the  Trustee may demand  payment or delivery  of, and shall
receive and collect,  all money and other  property  payable to or receivable by
the Trustee  pursuant to this  Agreement.  The Trustee shall hold all such money
and property received by it as part of the Trust Fund and shall distribute it as
provided  in this  Agreement.  If the  Trustee  shall not have  timely  received
amounts  to be  remitted  with  respect  to the  Mortgage  Loans from the Master
Servicer,   the  Trustee  shall  request  the  Master   Servicer  to  make  such
distribution  as promptly as  practicable or legally  permitted.  If the Trustee
shall subsequently receive any such amount, it may withdraw such request.

     Section 6.14. Events of Default;  Trustee To Act; Appointment of Successor.
                   ------------------------------------------------------------
(a) The occurrence of any one or more of the following  events shall  constitute
an "Event of Default":

          (i) Any  failure by the Master  Servicer  to furnish  the  Trustee the
     Mortgage Loan data  sufficient to prepare the reports  described in Section
     4.03(a) which  continues  unremedied for a period of one Business Day after
     the date upon which written notice of such failure shall have been given to
     such Master  Servicer by the  Trustee or to such  Master  Servicer  and the
     Trustee by the Holders of not less than 25% of the Class  Principal  Amount
     (or Class Notional Amount) of each Class of Certificates  affected thereby;
     or

          (ii) Any failure on the part of the Master Servicer duly to observe or
     perform in any material respect any other of the covenants or agreements on
     the  part  of such  Master  Servicer  contained  in  this  Agreement  which
     continues  unremedied for a period of 30 days (or 15 days, in the case of a
     failure to maintain any Insurance Policy required to be maintained pursuant
     to this Agreement)  after the date on which written notice of such failure,
     requiring  the same to be  remedied,  shall have been given to such  Master
     Servicer by the Trustee,  or to such Master Servicer and the Trustee by the
     Holders  of not less  than 25% of the  Class  Principal  Amount  (or  Class
     Notional Amount) of each Class of Certificates affected thereby; or

          (iii) A decree or order of a court or agency or supervisory  authority
     having  jurisdiction  for the  appointment  of a conservator or receiver or
     liquidator in any insolvency,  readjustment of debt,  marshalling of assets
     and  liabilities  or  similar   proceedings,   or  for  the  winding-up  or
     liquidation  of its  affairs,  shall have been  entered  against the Master
     Servicer,   and  such  decree  or  order  shall  have   remained  in  force
     undischarged  or  unstayed  for a period  of 60 days or any  Rating  Agency
     reduces or  withdraws  or threatens to reduce or withdraw the rating of the
     Certificates   because  of  the  financial   condition  or  loan  servicing
     capability of such Master Servicer; or

          (iv)  The  Master  Servicer  shall  consent  to the  appointment  of a
     conservator or receiver or liquidator in any  insolvency,  readjustment  of
     debt,  marshalling  of assets and  liabilities,  voluntary  liquidation  or
     similar  proceedings  of or  relating  to  such  Master  Servicer  or of or
     relating to all or substantially all of its property; or

          (v) The Master  Servicer  shall admit in writing its  inability to pay
     its debts  generally as they become due, file a petition to take  advantage
     of any applicable insolvency or reorganization  statute, make an assignment
     for the benefit of its  creditors  or  voluntarily  suspend  payment of its
     obligations; or

          (vi) The Master  Servicer shall be dissolved,  or shall dispose of all
     or  substantially  all of its  assets,  or  consolidate  with or merge into
     another  entity or shall permit another entity to consolidate or merge into
     it,  such  that the  resulting  entity  does not  meet the  criteria  for a
     successor servicer as specified in Section 9.27 hereof; or

          (vii) If a representation or warranty set forth in Section 9.14 hereof
     shall  prove  to be  incorrect  as of the  time  made in any  respect  that
     materially and adversely  affects the interests of the  Certificateholders,
     and the  circumstance or condition in respect of which such  representation
     or warranty was incorrect shall not have been eliminated or cured within 60
     days   after  the  date  on  which   written   notice  of  such   incorrect
     representation  or warranty shall have been given to the Master Servicer by
     the  Trustee,  or to the Master  Servicer and the Trustee by the Holders of
     not less than 25% of the  Aggregate  Certificate  Principal  Amount of each
     Class of Certificates; or

          (viii)  A sale  or  pledge  of the  any of the  rights  of the  Master
     Servicer  hereunder  or an  assignment  of  this  Agreement  by the  Master
     Servicer  or a  delegation  of the rights or duties of the Master  Servicer
     hereunder  shall  have  occurred  in any  manner  not  otherwise  permitted
     hereunder  and  without  the  prior  written  consent  of the  Trustee  and
     Certificateholders  holding more than 50% of the Class Principal Amount (or
     Class Notional Amount) of each Class of Certificates;

          (ix) Any  Servicer  at any  time is not  either  an  FNMA-  or  FHLMC-
     approved  Seller/Servicer,  and the Master  Servicer has not terminated the
     rights and  obligations  of such Servicer  under the  applicable  Servicing
     Agreement  and  replaced  such  Servicer  with an FNMA-  or  FHLMC-approved
     servicer within 30 days of the absence of such approval; or

          (x) Any  failure of the Master  Servicer  to remit to the  Trustee any
     payment   required   to  be  made  to  the   Trustee  for  the  benefit  of
     Certificateholders  under  the  terms  of  this  Agreement,  including  any
     Advance, on any Deposit Date.

     If an Event of  Default  described  in  clauses  (i)  through  (ix) of this
Section 6.14 shall occur,  then,  in each and every case,  subject to applicable
law, so long as any such Event of Default  shall not have been  remedied  within
any period of time  prescribed by this Section 6.14,  the Trustee,  by notice in
writing  to  the  Master   Servicer   may,   and  shall,   if  so   directed  by
Certificateholders  evidencing more than 50% of the Class  Principal  Amount (or
Class  Notional  Amount) of each  Class of  Certificates,  terminate  all of the
rights  and  obligations  of the  Master  Servicer  hereunder  and in and to the
Mortgage  Loans and the proceeds  thereof.  If an Event of Default  described in
clause (x) of this  Section  6.14 shall  occur,  then,  in each and every  case,
subject  to  applicable  law,  the  Trustee,  by notice in writing to the Master
Servicer,  shall  promptly  terminate all of the rights and  obligations  of the
Master  Servicer  hereunder  and in and to the  Mortgage  Loans and the proceeds
thereof.  On or after the receipt by the Master Servicer of such written notice,
all  authority  and power of the Master  Servicer,  and only in its  capacity as
Master Servicer under this Agreement, whether with respect to the Mortgage Loans
or otherwise,  shall pass to and be vested in the Trustee  pursuant to and under
the terms of this Agreement;  and the Trustee is hereby authorized and empowered
to  execute  and  deliver,  on  behalf  of the  defaulting  Master  Servicer  as
attorney-in-fact or otherwise, any and all documents and other instruments,  and
to do or accomplish all other acts or things  necessary or appropriate to effect
the purposes of such notice of termination, whether to complete the transfer and
endorsement  or  assignment  of the  Mortgage  Loans and  related  documents  or
otherwise.  The defaulting  Master Servicer agrees to cooperate with the Trustee
in   effecting   the   termination   of   the   defaulting   Master   Servicer's
responsibilities  and rights  hereunder as Master  Servicer  including,  without
limitation,  notifying  Mortgagors  of the  assignment  of the master  servicing
function and  providing the Trustee or its designee all documents and records in
electronic or other form reasonably requested by it to enable the Trustee or its
designee to assume the defaulting Master Servicer's  functions hereunder and the
transfer to the Trustee for  administration  by it of all amounts which shall at
the time be or should have been deposited by the defaulting  Master  Servicer in
the Collection  Account  maintained by such  defaulting  Master Servicer and any
other account or fund maintained with respect to the  Certificates or thereafter
received  with  respect  to  the  Mortgage  Loans.  The  Master  Servicer  being
terminated  shall bear all costs of a master servicing  transfer,  including but
not limited to those of the Trustee  reasonably  allocable to specific employees
and overhead, legal fees and expenses,  accounting and financial consulting fees
and expenses, and costs of amending the Agreement, if necessary.

     Notwithstanding the termination of its activities as Master Servicer,  each
terminated Master Servicer shall continue to be entitled to reimbursement to the
extent provided in Section 4.02(i),  (ii),  (iii),  (iv), (v), (vi), (vii), (ix)
and (xi) to the extent such  reimbursement  relates to the period  prior to such
Master Servicer's termination.

     If any Event of Default shall occur,  the Trustee shall promptly notify the
Rating  Agencies of the nature and extent of such Event of Default.  The Trustee
shall  immediately  give written notice to the Master  Servicer upon such Master
Servicer's failure to remit funds on the Deposit Date.

     (b) On and  after  the time  the  Master  Servicer  receives  a  notice  of
termination from the Trustee pursuant to Section 6.14(a) or the Trustee receives
the  resignation  of the  Master  Servicer  evidenced  by an  Opinion of Counsel
pursuant to Section 9.29, the Trustee, unless another master servicer shall have
been appointed, shall be the successor in all respects to the Master Servicer in
its  capacity as such under this  Agreement  and the  transactions  set forth or
provided  for  herein and shall have all the rights and powers and be subject to
all the  responsibilities,  duties and liabilities  relating thereto and arising
thereafter placed on the Master Servicer hereunder,  including the obligation to
make  Advances;  provided,  however,  that any failure to perform such duties or
responsibilities  caused by the Master Servicer's failure to provide information
required  by this  Agreement  shall not be  considered  a default by the Trustee
hereunder.  In addition, the Trustee shall have no responsibility for any act or
omission  of the  Master  Servicer  prior  to the  issuance  of  any  notice  of
termination  and shall have no  liability  relating to the  representations  and
warranties  of the Master  Servicer set forth in Section  9.14. In the Trustee's
capacity as such  successor,  the  Trustee  shall have the same  limitations  on
liability herein granted to the Master Servicer. As compensation  therefor,  the
Trustee  shall be  entitled to receive  all  compensation  payable to the Master
Servicer under this Agreement, including the Master Servicing Fee.

     (c) Notwithstanding the above, the Trustee may, if it shall be unwilling to
continue to so act, or shall, if it is unable to so act, appoint,  or petition a
court of competent  jurisdiction to appoint,  any  established  housing and home
finance institution servicer,  master servicer,  servicing or mortgage servicing
institution  having a net worth of not less than  $15,000,000  and meeting  such
other  standards  for a  successor  master  servicer  as are set  forth  in this
Agreement,  as the successor to such Master Servicer in the assumption of all of
the  responsibilities,  duties or  liabilities  of a master  servicer,  like the
Master  Servicer.  Any entity  designated  by the Trustee as a successor  master
servicer may be an Affiliate of the Trustee;  provided,  however,  that,  unless
such Affiliate  meets the net worth  requirements  and other standards set forth
herein for a successor master servicer,  the Trustee, in its individual capacity
shall agree,  at the time of such  designation,  to be and remain  liable to the
Trust Fund for such  Affiliate's  actions and omissions in performing its duties
hereunder.  In connection with such appointment and assumption,  the Trustee may
make such arrangements for the compensation of such successor out of payments on
Mortgage Loans as it and such successor shall agree; provided,  however, that no
such  compensation  shall be in excess of that permitted to the Master  Servicer
hereunder.  The Trustee and such successor  shall take such actions,  consistent
with this Agreement, as shall be necessary to effectuate any such succession and
may make other  arrangements  with  respect  to the  servicing  to be  conducted
hereunder  which  are not  inconsistent  herewith.  The  Master  Servicer  shall
cooperate  with the Trustee and any successor  master  servicer in effecting the
termination  of the Master  Servicer's  responsibilities  and  rights  hereunder
including,  without  limitation,  notifying  Mortgagors of the assignment of the
master  servicing  functions  and  providing  the Trustee and  successor  master
servicer,  as applicable,  all documents and records in electronic or other form
reasonably  requested  by it  to  enable  it to  assume  the  Master  Servicer's
functions  hereunder  and the transfer to the Trustee or such  successor  master
servicer,  as applicable,  all amounts which shall at the time be or should have
been deposited by the Master  Servicer in the  Collection  Account and any other
account or fund  maintained  with respect to the  Certificates  or thereafter be
received with respect to the Mortgage  Loans.  Neither the Trustee nor any other
successor  master servicer shall be deemed to be in default  hereunder by reason
of any failure to make, or any delay in making,  any  distribution  hereunder or
any portion thereof caused by (i) the failure of the Master Servicer to deliver,
or any delay in delivering,  cash,  documents or records to it, (ii) the failure
of the Master  Servicer to  cooperate as required by this  Agreement,  (iii) the
failure of the Master  Servicer to deliver the Mortgage Loan data to the Trustee
as required by this  Agreement or (iv)  restrictions  imposed by any  regulatory
authority having jurisdiction over the Master Servicer.

     Section 6.15. Additional Remedies of Trustee Upon Event of Default.  During
                   ----------------------------------------------------
the continuance of any Event of Default,  so long as such Event of Default shall
not have been  remedied,  the  Trustee,  in addition to the rights  specified in
Section 6.14, shall have the right, in its own name and as trustee of an express
trust,  to take all  actions now or  hereafter  existing at law, in equity or by
statute to enforce its rights and  remedies  and to protect the  interests,  and
enforce  the rights  and  remedies,  of the  Certificateholders  (including  the
institution   and  prosecution  of  all  judicial,   administrative   and  other
proceedings  and  the  filings  of  proofs  of  claim  and  debt  in  connection
therewith).  Except as otherwise expressly provided in this Agreement, no remedy
provided for by this Agreement shall be exclusive of any other remedy,  and each
and every remedy shall be cumulative and in addition to any other remedy, and no
delay or omission to exercise any right or remedy shall impair any such right or
remedy or shall be deemed to be a waiver of any Event of Default.

     Section  6.16.  Waiver of  Defaults.  35% or more of the  Aggregate  Voting
                     -------------------
Interests of Certificateholders may waive any default or Event of Default by the
Master Servicer in the performance of its obligations  hereunder,  except that a
default in the making of any required  deposit to the  Certificate  Account that
would  result  in a failure  of the  Trustee  to make any  required  payment  of
principal of or interest on the Certificates may only be waived with the consent
of 100% of the  affected  Certificateholders.  Upon  any such  waiver  of a past
default,  such default  shall cease to exist,  and any Event of Default  arising
therefrom  shall be deemed  to have been  remedied  for  every  purpose  of this
Agreement.  No such waiver shall extend to any  subsequent  or other  default or
impair any right consequent thereon except to the extent expressly so waived.

     Section  6.17.  Notification  to Holders.  Upon  termination  of the Master
                     ------------------------
Servicer or appointment of a successor to the Master  Servicer,  in each case as
provided  herein,  the Trustee shall promptly mail notice thereof by first class
mail to the  Certificateholders  at their respective  addresses appearing on the
Certificate  Register.  The  Trustee  shall  also,  within  45  days  after  the
occurrence  of any Event of Default  known to the Trustee,  give written  notice
thereof to  Certificateholders,  unless  such  Event of Default  shall have been
cured or waived  prior to the  issuance  of such  notice and within  such 45-day
period.

     Section 6.18. Directions by Certificateholders and Duties of Trustee During
                   -------------------------------------------------------------
Event of Default.  Subject to the provisions of Section 8.01 hereof,  during the
- ----------------
continuance of any Event of Default, Holders of Certificates evidencing not less
than 25% of the Class Principal  Amount (or Class Notional Amount) of each Class
of  Certificates  may  direct  the  time,  method  and place of  conducting  any
proceeding for any remedy  available to the Trustee,  or exercising any trust or
power conferred upon the Trustee, under this Agreement;  provided, however, that
the  Trustee  shall be under no  obligation  to pursue  any such  remedy,  or to
exercise any of the trusts or powers vested in it by this Agreement  (including,
without limitation, (i) the conducting or defending of any administrative action
or litigation  hereunder or in relation  hereto and (ii) the  terminating of the
Master  Servicer or any successor  master servicer from its rights and duties as
master  servicer  hereunder)  at the  request,  order or direction of any of the
Certificateholders,  unless such  Certificateholders  shall have  offered to the
Trustee  reasonable  security  or  indemnity  against  the  cost,  expenses  and
liabilities  which may be incurred therein or thereby;  and,  provided  further,
that,  subject to the  provisions  of Section  8.01,  the Trustee shall have the
right to decline to follow any such direction if the Trustee, in accordance with
an Opinion of Counsel,  determines that the action or proceeding so directed may
not lawfully be taken or if the Trustee in good faith determines that the action
or proceeding so directed would involve it in personal  liability or be unjustly
prejudicial to the non-assenting Certificateholders.

     Section 6.19.  Action Upon Certain Failures of the Master Servicer and Upon
                    ------------------------------------------------------------
Event of Default.  In the event that the Trustee shall have actual  knowledge of
- ----------------
any action or  inaction  of the Master  Servicer  that would  become an Event of
Default upon the Master Servicer's  failure to remedy the same after notice, the
Trustee shall give notice thereof to the Master Servicer.

     Section 6.20. Preparation of Tax Returns and Other Reports. (a) The Trustee
                   --------------------------------------------
shall  prepare or cause to be prepared  on behalf of the Trust Fund,  based upon
information   calculated  in  accordance   with  this   Agreement   pursuant  to
instructions  given by the  Depositor,  and the Trustee shall file,  federal tax
returns and  appropriate  state income tax returns and such other returns as may
be required by applicable  law relating to the Trust Fund, and the Trustee shall
forward  copies to the  Depositor of all such returns and Form 1099  information
and such other  information  within the control of the Trustee as the  Depositor
may reasonably request in writing,  and shall forward to each  Certificateholder
such forms and furnish such information within the control of the Trustee as are
required by the Code and the REMIC  Provisions to be furnished to them, and will
prepare and file annual reports required by applicable state  authorities,  will
file copies of this Agreement with the appropriate  state  authorities as may be
required   by   applicable   law,   and  will   prepare   and   disseminate   to
Certificateholders  Form  1099 (or  otherwise  furnish  information  within  the
control of the  Trustee) to the extent  required by  applicable  law. The Master
Servicer will  indemnify the Trustee for any liability of or assessment  against
the Trustee  resulting from any error in any of such tax or information  returns
directly  resulting  from  errors in the  information  provided  by such  Master
Servicer  (other  than  information  that is  derived  solely  from  information
provided by a Servicer).

     (b) The Trustee  shall prepare and file with the Internal  Revenue  Service
("IRS"),  on behalf of the Trust  Fund,  an  application  on IRS Form SS-4.  The
Trustee,  upon  receipt  from the IRS of the Notice of  Taxpayer  Identification
Number  Assigned,  shall  promptly  forward a copy of such  notice to the Master
Servicer and the Depositor.

     (c) The Depositor shall prepare or cause to be prepared the initial current
report  on Form 8-K and  thereafter  the  Trustee  will  prepare  or cause to be
prepared Form 10-Ks and Form 10-Qs (if necessary), or monthly current reports on
Form 8-K, on behalf of the Trust Fund, as may be required by applicable law, for
filing with the Securities and Exchange  Commission (the "SEC"), and the Trustee
will sign each such report on behalf of the Trust.  The Trustee  will  forward a
copy of each such report to the  Depositor  promptly  after such report has been
filed  with the SEC.  The  Trustee  agrees  to use its best  efforts  to seek to
terminate such filing  obligation after the period during which such filings are
required under the Securities Exchange Act of 1934. Promptly after filing a Form
15 or other  applicable form with the SEC in connection  with such  termination,
the Trustee  shall  deliver to the  Depositor a copy of such form  together with
copies of  confirmations of receipt by the SEC of each report filed therewith on
behalf of the Trust Fund.

                                  ARTICLE VII

                            PURCHASE AND TERMINATION
                                OF THE TRUST FUND

     Section 7.01.  Termination of Trust Fund Upon  Repurchase or Liquidation of
                    ------------------------------------------------------------
All Mortgage Loans. (a) The respective  obligations and  responsibilities of the
- ------------------
Trustee and the Master Servicer created hereby (other than the obligation of the
Trustee to make payments to Certificateholders as set forth in Section 7.02, the
obligation of the Master Servicer to make a final  remittance to the Trustee for
deposit  into  the  Certificate   Account  pursuant  to  Section  4.01  and  the
obligations of the Master Servicer to the Trustee  pursuant to Sections 9.10 and
9.14),  shall  terminate  on the  earlier  of (i) the  final  payment  or  other
liquidation  of the last  Mortgage  Loan  remaining  in the  Trust  Fund and the
disposition  of all REO Property  and (ii) the sale of the property  held by the
Trust Fund in accordance with Section  7.01(b);  provided,  however,  that in no
event shall the Trust Fund created hereby continue beyond the earlier of (i) the
expiration of 21 years from the death of the last survivor of the descendants of
Joseph P. Kennedy,  the late Ambassador of the United States to the Court of St.
James's,  living on the date hereof, and (ii) the Latest Possible Maturity Date.
Any  termination of the Trust Fund shall be carried out in such a manner so that
the  termination  of each REMIC  included  therein shall qualify as a "qualified
liquidation" under the REMIC Provisions.

     (b) On any  Distribution  Date  occurring  after  the  date  on  which  the
aggregate  Scheduled Principal Balance of the Mortgage Loans is less than 10% of
the Cut-off Date Aggregate  Principal  Balance,  the Depositor may, upon written
direction to the Trustee, cause (i) the Trustee to sell (or arrange for the sale
of) the  assets  of the Trust  Fund and (ii) the  Trust  Fund to adopt a plan of
complete  liquidation  pursuant to Section  7.03(a)(i) hereof to sell all of its
property.  The  property  of the  Trust  Fund  shall  be sold  at a  price  (the
"Termination  Price") equal to: (i) 100% of the unpaid principal balance of each
Mortgage Loan on the day of such purchase plus interest  accrued  thereon at the
applicable  Mortgage  Rate with respect to any Mortgage  Loan to the Due Date in
the Due Period immediately  preceding the related  Distribution Date to the date
of such  repurchase  and (ii) the fair market  value of any REO Property and any
other property held by any REMIC,  such fair market value to be determined by an
appraiser or appraisers appointed by the Master Servicer with the consent of the
Trustee.

     Section 7.02.  Procedure Upon  Termination of Trust Fund. (a) Notice of any
                    -----------------------------------------
termination  pursuant  to  the  provisions  of  Section  7.01,   specifying  the
Distribution  Date upon  which the final  distribution  shall be made,  shall be
given promptly by the Trustee by first class mail to  Certificateholders  mailed
(x) no later than five Business Days after the Trustee has received  notice from
the  Depositor of its intent to exercise its right to cause the  termination  of
the Trust  Fund  pursuant  to Section  7.01(b) or (y) upon the final  payment or
other  liquidation  of the last Mortgage Loan or REO Property in the Trust Fund.
Such  notice  shall  specify  (A)  the   Distribution   Date  upon  which  final
distribution on the  Certificates  of all amounts  required to be distributed to
Certificateholders  pursuant to Section 5.02 will be made upon  presentation and
surrender of the  Certificates at the Corporate  Trust Office,  and (B) that the
Record Date otherwise  applicable to such  Distribution  Date is not applicable,
distribution being made only upon presentation and surrender of the Certificates
at the office or agency of the Trustee therein specified. The Trustee shall give
such notice to the Master  Servicer  and the  Certificate  Registrar at the time
such notice is given to Holders of the Certificates.  Upon any such termination,
the duties of the Certificate  Registrar with respect to the Certificates  shall
terminate and the Trustee  shall  terminate,  or request the Master  Servicer to
terminate,  the Collection Account it maintains, the Certificate Account and any
other account or fund  maintained with respect to the  Certificates,  subject to
the   Trustee's   obligation   hereunder   to  hold  all   amounts   payable  to
Certificateholders in trust without interest pending such payment.

     (b)  In  the  event  that  all  of  the  Holders  do  not  surrender  their
Certificates  for  cancellation  within three months after the time specified in
the  above-mentioned  written  notice,  the Trustee shall give a second  written
notice to the remaining  Certificateholders  to surrender their Certificates for
cancellation and receive the final distribution with respect thereto.  If within
one  year  after  the  second  notice  any  Certificates  shall  not  have  been
surrendered for cancellation,  the Trustee may take appropriate steps to contact
the remaining Certificateholders concerning surrender of such Certificates,  and
the cost thereof shall be paid out of the amounts distributable to such Holders.
If within two years after the second notice any Certificates shall not have been
surrendered for cancellation, the Trustee shall, subject to applicable state law
relating to escheatment,  hold all amounts distributable to such Holders for the
benefit of such  Holders.  No  interest  shall  accrue on any amount held by the
Trustee   and   not   distributed   to   a   Certificateholder   due   to   such
Certificateholder's  failure to surrender its  Certificate(s) for payment of the
final distribution thereon in accordance with this Section.

     (c) Any reasonable  expenses incurred by the Trustee in connection with any
termination  or  liquidation  of the  Trust  Fund  shall be paid  from  proceeds
received from the liquidation of the Trust Fund.

     Section 7.03. Additional Trust Fund Termination Requirements. (a) The Trust
                   ----------------------------------------------
Fund  shall  be  terminated  in   accordance   with  the  following   additional
requirements,  unless the Trustee seeks (at the request of the Master Servicer),
and subsequently  receives,  an Opinion of Counsel (at the expense of the Master
Servicer),  addressed to the Trustee to the effect that the failure of the Trust
Fund to comply with the requirements of this Section 7.03 will not (i) result in
the  imposition  of taxes on any REMIC under the REMIC  Provisions or (ii) cause
any REMIC  established  hereunder to fail to qualify as a REMIC at any time that
any Certificates are outstanding:

          (i)  Within  89 days  prior to the  time of the  making  of the  final
     payment on the Certificates, the Trustee (upon (x) the sale of the property
     of the  Trust  Fund by the  Trustee  pursuant  to  Section  7.01(b)  or (y)
     notification  by the  Depositor  that it intends to exercise  its option to
     cause the  termination  of the Trust  Fund)  shall adopt a plan of complete
     liquidation  of the  Trust  Fund on  behalf  of  each  REMIC,  meeting  the
     requirements of a qualified liquidation under the REMIC Provisions;

          (ii) The sale of the assets of the Trust Fund pursuant to Section 7.02
     shall be a sale for cash and shall  occur at or after the time of  adoption
     of such a plan of complete  liquidation  and prior to the time of making of
     the final payment on the Certificates;

          (iii) On the date specified for final payment of the Certificates, the
     Trustee  shall make final  distributions  of principal  and interest on the
     Certificates in accordance  with Section 5.02 and distribute or credit,  or
     cause  to be  distributed  or  credited,  to the  Holder  of  the  Residual
     Certificate  all cash on hand  after such final  payment  (other  than cash
     retained  to meet  claims),  and the  Trust  Fund (and  each  REMIC)  shall
     terminate at that time; and

          (iv) In no event  may the final  payment  on the  Certificates  or the
     final  distribution or credit to the Holder of the Residual  Certificate be
     made  after  the 89th day  from  the  date on  which  the plan of  complete
     liquidation is adopted.

     (b) By its acceptance of a Residual Certificate, each Holder thereof hereby
(i)  authorizes  the Trustee to take such action as may be  necessary to adopt a
plan of complete  liquidation  of the related REMIC and (ii) agrees to take such
other action as may be necessary to adopt a plan of complete  liquidation of the
related REMIC, which  authorization shall be binding upon all successor Residual
Certificateholders.

                                  ARTICLE VIII

                          RIGHTS OF CERTIFICATEHOLDERS

     Section 8.01.  Limitation on Rights of Holders. (a) The death or incapacity
                    -------------------------------
of any  Certificateholder  shall not operate to terminate this Agreement or this
Trust Fund, nor entitle such Certificateholder's  legal representatives or heirs
to claim an  accounting  or take any  action  or  proceeding  in any court for a
partition  or winding up of this Trust Fund,  nor  otherwise  affect the rights,
obligations  and  liabilities  of the parties  hereto or any of them.  Except as
otherwise expressly provided herein, no  Certificateholder,  solely by virtue of
its status as a Certificateholder, shall have any right to vote or in any manner
otherwise  control the Master  Servicer or the operation  and  management of the
Trust Fund, or the obligations of the parties hereto,  nor shall anything herein
set forth, or contained in the terms of the Certificates,  be construed so as to
constitute the Certificateholders from time to time as partners or members of an
association, nor shall any Certificateholder be under any liability to any third
person by reason of any action taken by the parties to this  Agreement  pursuant
to any provision hereof.

     (b)  No   Certificateholder,   solely   by   virtue   of  its   status   as
Certificateholder,  shall  have  any  right  by  virtue  or by  availing  of any
provision of this  Agreement  to institute  any suit,  action or  proceeding  in
equity or at law upon or under or with  respect to this  Agreement,  unless such
Holder  previously  shall have given to the Trustee a written notice of an Event
of Default and of the continuance thereof, as hereinbefore  provided, and unless
also the  Holders  of  Certificates  evidencing  not less  than 25% of the Class
Principal  Amount (or Class Notional Amount) of Certificates of each Class shall
have made written  request upon the Trustee to  institute  such action,  suit or
proceeding  in its own name as Trustee  hereunder  and shall have offered to the
Trustee such reasonable  indemnity as it may require against the cost,  expenses
and liabilities to be incurred  therein or thereby,  and the Trustee,  for sixty
days after its receipt of such  notice,  request and offer of  indemnity,  shall
have  neglected or refused to institute any such action,  suit or proceeding and
no direction  inconsistent with such written request has been given such Trustee
during such sixty-day period by such Certificateholders; it being understood and
intended,  and being expressly covenanted by each  Certificateholder  with every
other  Certificateholder  and  the  Trustee,  that  no one or  more  Holders  of
Certificates  shall  have any  right in any  manner  whatever  by  virtue  or by
availing of any provision of this Agreement to affect,  disturb or prejudice the
rights of the Holders of any other of such Certificates, or to obtain or seek to
obtain  priority over or preference to any other such Holder,  or to enforce any
right under this  Agreement,  except in the manner  herein  provided and for the
benefit of all  Certificateholders.  For the protection  and  enforcement of the
provisions of this  Section,  each and every  Certificateholder  and the Trustee
shall be entitled to such relief as can be given either at law or in equity.

     Section 8.02.  Access to List of Holders.  (a) If the Trustee is not acting
                    -------------------------
as Certificate Registrar,  the Certificate Registrar will furnish or cause to be
furnished to the Trustee,  within fifteen days after receipt by the  Certificate
Registrar  of a request by the Trustee in writing,  a list,  in such form as the
Trustee  may   reasonably   require,   of  the  names  and   addresses   of  the
Certificateholders of each Class as of the most recent Record Date.

     (b) If three or more Holders or Certificate Owners (hereinafter referred to
as "Applicants")  apply in writing to the Trustee,  and such application  states
that the  Applicants  desire to  communicate  with other Holders with respect to
their rights under this Agreement or under the  Certificates  and is accompanied
by a copy of the communication  which such Applicants propose to transmit,  then
the  Trustee  shall,  within  five  Business  Days  after  the  receipt  of such
application, afford such Applicants reasonable access during the normal business
hours of the Trustee to the most recent list of  Certificateholders  held by the
Trustee or shall,  as an  alternative,  send, at the  Applicants'  expense,  the
written communication  proffered by the Applicants to all  Certificateholders at
their addresses as they appear in the Certificate Register.

     (c) Every Holder or Certificate  Owner, if the Holder is a Clearing Agency,
by receiving and holding a Certificate,  agrees with the  Depositor,  the Master
Servicer,  the Certificate Registrar and the Trustee that neither the Depositor,
the Master  Servicer,  the  Certificate  Registrar nor the Trustee shall be held
accountable by reason of the disclosure of any such  information as to the names
and addresses of the Certificateholders hereunder, regardless of the source from
which such information was derived.

     Section 8.03.  Acts of Holders of  Certificates.  (a) Any request,  demand,
                    --------------------------------
authorization,  direction,  notice,  consent, waiver or other action provided by
this  Agreement  to be given or taken by Holders or  Certificate  Owner,  if the
Holder is a Clearing  Agency,  may be embodied in and  evidenced  by one or more
instruments of  substantially  similar tenor signed by such Holders in person or
by agent duly appointed in writing;  and, except as herein  otherwise  expressly
provided, such action shall become effective when such instrument or instruments
are delivered to the Trustee and, where expressly required herein, to the Master
Servicer.  Such instrument or instruments  (as the action  embodies  therein and
evidenced  thereby) are herein sometimes  referred to as an "Act" of the Holders
signing  such  instrument  or  instruments.  Proof  of  execution  of  any  such
instrument or of a writing  appointing  any such agents shall be sufficient  for
any purpose of this  Agreement and conclusive in favor of the Trustee and Master
Servicer,  if made in the manner  provided in this Section.  Each of the Trustee
and  Master  Servicer  shall  promptly  notify  the other of receipt of any such
instrument by it, and shall  promptly  forward a copy of such  instrument to the
other.

     (b) The fact and date of the execution by any Person of any such instrument
or writing may be proved by the  affidavit of a witness of such  execution or by
the certificate of any notary public or other officer  authorized by law to take
acknowledgments or deeds, certifying that the individual signing such instrument
or writing acknowledged to him the execution thereof. Whenever such execution is
by an officer of a corporation  or a member of a  partnership  on behalf of such
corporation or partnership,  such certificate or affidavit shall also constitute
sufficient  proof of his  authority.  The fact and date of the  execution of any
such  instrument or writing,  or the authority of the  individual  executing the
same, may also be proved in any other manner which the Trustee deems sufficient.

     (c) The ownership of Certificates  (whether or not such Certificates  shall
be overdue and  notwithstanding  any  notation  of  ownership  or other  writing
thereon  made  by  anyone  other  than  the  Trustee)  shall  be  proved  by the
Certificate  Register,  and neither the Trustee,  the Master  Servicer,  nor the
Depositor shall be affected by any notice to the contrary.

     (d) Any request, demand, authorization,  direction, notice, consent, waiver
or other action by the Holder of any Certificate  shall bind every future Holder
of the same  Certificate  and the Holder of every  Certificate  issued  upon the
registration of transfer thereof or in exchange therefor or in lieu thereof,  in
respect of anything  done,  omitted or suffered to be done by the Trustee or the
Master Servicer in reliance  thereon,  whether or not notation of such action is
made upon such Certificate.

                                   ARTICLE IX

                 ADMINISTRATION AND SERVICING OF MORTGAGE LOANS
                             BY THE MASTER SERVICER

     Section 9.01.  Duties of the Master Servicer.  The  Certificateholders,  by
                    -----------------------------
their purchase and acceptance of the Certificates,  appoint Aurora Loan Services
Inc., as Master  Servicer.  For and on behalf of the Depositor,  the Trustee and
the  Certificateholders,  the Master  Servicer shall master service the Mortgage
Loans in accordance  with the provisions of this Agreement and the provisions of
the applicable Servicing Agreement.

     Section 9.02.  Master Servicer Fidelity Bond and Master Servicer Errors and
                    ------------------------------------------------------------
Omissions  Insurance  Policy.  (a) The Master  Servicer,  at its expense,  shall
- ----------------------------
maintain in effect a Fidelity Bond and an Errors and Omissions Insurance Policy,
affording coverage with respect to all directors,  officers, employees and other
Persons  acting on such  Master  Servicer's  behalf,  and  covering  errors  and
omissions in the performance of the Master Servicer's obligations hereunder. The
Errors and  Omissions  Insurance  Policy and the Fidelity  Bond shall be in such
form and amount that would meet the requirements of FNMA or FHLMC if it were the
purchaser  of the Mortgage  Loans.  The Master  Servicer  shall (i) require each
Servicer  to maintain an Errors and  Omissions  Insurance  Policy and a Fidelity
Bond in accordance  with the provisions of the applicable  Servicing  Agreement,
(ii)  cause  each  Servicer  to  provide  to the  Master  Servicer  certificates
evidencing  that such  policy and bond is in effect and to furnish to the Master
Servicer any notice of  cancellation,  non-renewal or modification of the policy
or  bond  received  by  it,  as and to the  extent  provided  in the  applicable
Servicing  Agreement,  and (iii) furnish copies of the  certificates and notices
referred to in clause (ii) to the Trustee  upon its request.  The Fidelity  Bond
and Errors and  Omissions  Insurance  Policy may be obtained and  maintained  in
blanket form.

     (b) The Master  Servicer shall promptly  report to the Trustee any material
changes  that may  occur in the  Master  Servicer  Fidelity  Bond or the  Master
Servicer Errors and Omissions Insurance Policy and shall furnish to the Trustee,
on request,  certificates  evidencing that such bond and insurance policy are in
full force and effect.  The Master Servicer shall promptly report to the Trustee
all cases of embezzlement or fraud, if such events involve funds relating to the
Mortgage  Loans.  The total losses,  regardless of whether claims are filed with
the applicable  insurer or surety,  shall be disclosed in such reports  together
with the amount of such  losses  covered by  insurance.  If a bond or  insurance
claim report is filed with any of such bonding companies or insurers, the Master
Servicer  shall  promptly  furnish  a copy of such  report to the  Trustee.  Any
amounts  relating to the Mortgage Loans  collected by the Master  Servicer under
any such bond or policy shall be promptly remitted by the Master Servicer to the
Trustee for deposit into the Certificate  Account.  Any amounts  relating to the
Mortgage Loans  collected by any Servicer under any such bond or policy shall be
remitted  to the  Master  Servicer  to the  extent  provided  in the  applicable
Servicing Agreement.

     Section  9.03.   Master   Servicer's   Financial   Statements  and  Related
                      ----------------------------------------------------------
Information.  For each year this  Agreement  is in effect,  the Master  Servicer
- -----------
shall submit to the Trustee,  each Rating Agency and the Depositor a copy of its
annual unaudited  financial  statements on or prior to May 31 of each year. Such
financial statements shall include a balance sheet, income statement,  statement
of retained  earnings,  statement of additional  paid-in  capital,  statement of
changes in financial  position and all related  notes and schedules and shall be
in comparative  form,  certified by a nationally  recognized firm of Independent
Accountants  to the effect that such  statements  were  examined and prepared in
accordance  with generally  accepted  accounting  principles  applied on a basis
consistent with that of the preceding year.

     Section  9.04.  Power to Act;  Procedures.  (a) The Master  Servicer  shall
                     -------------------------
master  service  the  Mortgage  Loans and shall have full  power and  authority,
subject to the REMIC Provisions and the provisions of Article X hereof, and each
Servicer  shall have full power and  authority  (to the extent  provided  in the
applicable  Servicing  Agreement)  to do any and  all  things  that it may  deem
necessary or desirable in connection  with the servicing and  administration  of
the Mortgage Loans,  including but not limited to the power and authority (i) to
execute  and  deliver,  on behalf  of the  Certificateholders  and the  Trustee,
customary  consents  or waivers and other  instruments  and  documents,  (ii) to
consent to transfers of any Mortgaged  Property and  assumptions of the Mortgage
Notes and  related  Mortgages,  (iii) to  collect  any  Insurance  Proceeds  and
Liquidation Proceeds,  and (iv) to effectuate foreclosure or other conversion of
the  ownership of the  Mortgaged  Property  securing any Mortgage  Loan, in each
case,  in  accordance  with the  provisions  of this  Agreement  and the related
Servicing Agreement, as applicable;  provided that the Master Servicer shall not
take, or knowingly  permit any Servicer to take, any action that is inconsistent
with or prejudices the interests of the Trust Fund or the  Certificateholders in
any Mortgage Loan or the rights and interests of the Depositor,  the Trustee and
the Certificateholders under this Agreement. The Master Servicer shall represent
and  protect the  interests  of the Trust Fund in the same manner as it protects
its  own  interests  in  mortgage  loans  in its  own  portfolio  in any  claim,
proceeding or litigation  regarding a Mortgage Loan and shall not make or permit
any  Servicer to make any  modification,  waiver or amendment of any term of any
Mortgage  Loan that would  cause the Trust Fund to fail to qualify as a REMIC or
result in the imposition of any tax under Section  860F(a) or Section 860G(d) of
the Code. Without limiting the generality of the foregoing,  the Master Servicer
in its own name or in the name of a Servicer,  and each Servicer,  to the extent
such  authority is delegated to such Servicer by the Master  Servicer  under the
applicable  Servicing  Agreement,  is hereby  authorized  and  empowered  by the
Trustee when the Master Servicer or a Servicer,  as the case may be, believes it
appropriate  in its best  judgment and in  accordance  with  Accepted  Servicing
Practices and the applicable  Servicing  Agreement,  to execute and deliver,  on
behalf of itself and the Certificateholders, the Trustee or any of them, any and
all instruments of satisfaction or  cancellation,  or of partial or full release
or discharge and all other comparable instruments,  with respect to the Mortgage
Loans and with respect to the  Mortgaged  Properties.  The Trustee shall furnish
the Master Servicer,  upon request,  with any powers of attorney  empowering the
Master  Servicer  or  any  Servicer  to  execute  and  deliver   instruments  of
satisfaction or cancellation, or of partial or full release or discharge, and to
foreclose  upon  or  otherwise  liquidate  Mortgaged  Property,  and to  appeal,
prosecute  or defend in any court action  relating to the Mortgage  Loans or the
Mortgaged  Property,  in accordance with the applicable  Servicing Agreement and
this Agreement,  and the Trustee shall execute and deliver such other documents,
as the Master  Servicer may  request,  necessary  or  appropriate  to enable the
Master  Servicer to master  service and  administer the Mortgage Loans and carry
out its duties  hereunder,  in each case in accordance  with Accepted  Servicing
Practices (and the Trustee shall have no liability for misuse of any such powers
of attorney by the Master  Servicer or any Servicer).  If the Master Servicer or
the  Trustee  has been  advised  that it is likely that the laws of the state in
which  action is to be taken  prohibit  such  action if taken in the name of the
Trustee  or that the  Trustee  would be  adversely  affected  under  the  "doing
business"  or tax laws of such state if such  action is taken in its name,  then
upon request of the Trustee,  the Master Servicer shall join with the Trustee in
the  appointment  of a  co-trustee  pursuant  to  Section  6.09  hereof.  In the
performance of its duties hereunder, the Master Servicer shall be an independent
contractor and shall not, except in those instances where it is taking action in
the name of the Trustee, be deemed to be the agent of the Trustee.

     (b) In master  servicing and  administering  the Mortgage Loans, the Master
Servicer  shall  employ  procedures,  and shall  cause each  Servicer  to employ
procedures (including,  but not limited to, collection  procedures),  consistent
with the applicable  Servicing  Agreement.  Consistent  with the foregoing,  the
Master Servicer may, and may permit any Servicer to, in its discretion (i) waive
any late  payment  charge  or any  prepayment  charge  or  penalty  interest  in
connection  with the prepayment of a Mortgage Loan and (ii) extend the due dates
for  payments  due on a Mortgage  Note for a period not  greater  than 120 days;
provided,  however, that the maturity of any Mortgage Loan shall not be extended
past the date on which the final payment is due on the latest maturing  Mortgage
Loan as of the Cut-off Date.  In the event of any extension  described in clause
(ii) above,  the Master  Servicer shall make or cause to be made Advances on the
related  Mortgage Loan in accordance  with the provisions of Section 5.04 on the
basis of the  amortization  schedule of such Mortgage Loan without  modification
thereof by reason of such extension. Notwithstanding anything to the contrary in
this  Agreement,  the Master  Servicer shall not,  unless default by the related
Mortgagor  is, in the  reasonable  judgment  of the Master  Servicer,  imminent,
permit  any  modification,  waiver  or  amendment  of any  material  term of any
Mortgage Loan  (including  but not limited to the interest  rate,  the principal
balance,  the amortization  schedule,  or any other term affecting the amount or
timing of payments on the Mortgage Loan or the collateral  therefor)  unless the
Master  Servicer  shall have provided or caused to be provided to the Trustee an
Opinion of Counsel in writing to the effect  that such  modification,  waiver or
amendment  would not be  treated  as giving  rise to a new debt  instrument  for
federal  income tax  purposes and would not  adversely  affect the status of the
REMIC.

     Section  9.05.   Servicing  Agreements  Between  the  Master  Servicer  and
                      ----------------------------------------------------------
Servicers;  Enforcement of Servicers' Obligations.  (a) Each Servicing Agreement
- -------------------------------------------------
requires the  applicable  Servicer to service the Mortgage  Loans in  accordance
with the provisions thereof. References in this Agreement to actions taken or to
be  taken  by the  Master  Servicer  include  actions  taken or to be taken by a
Servicer on behalf of the Master Servicer. Any fees and other amounts payable to
such Servicers shall be deducted from amounts remitted to the Master Servicer by
the applicable Servicer and shall not be an obligation of the Trust.

     (b)  The  Master  Servicer,   for  the  benefit  of  the  Trustee  and  the
Certificateholders,  shall enforce the  obligations  of each Servicer  under the
related  Servicing  Agreement,  and shall, in the event that a Servicer fails to
perform its  obligations  in accordance  with the related  Servicing  Agreement,
terminate the rights and obligations of such Servicer  thereunder and either act
as servicer of the related  Mortgage  Loans or enter into a Servicing  Agreement
with a successor Servicer. Such enforcement,  including, without limitation, the
legal prosecution of claims, termination of Servicing Agreements and the pursuit
of other appropriate remedies,  shall be in such form and carried out to such an
extent  and at such time as the  Master  Servicer,  in its good  faith  business
judgment,  would require were it the owner of the related  Mortgage  Loans.  The
Master Servicer shall pay the costs of such enforcement at its own expense,  and
shall  be  reimbursed  therefor  initially  only  (i)  from a  general  recovery
resulting from such enforcement  only to the extent,  if any, that such recovery
exceeds all amounts due in respect of the related  Mortgage Loans or (ii) from a
specific  recovery  of costs,  expenses  or  attorneys'  fees  against the party
against whom such  enforcement  is directed,  and then,  to the extent that such
amounts are  insufficient to reimburse the Master Servicer for the costs of such
enforcement, (iii) from the Collection Account.

     Section 9.06.  Collection of Taxes,  Assessments and Similar Items.  (a) To
                    ---------------------------------------------------
the extent provided in the applicable Servicing  Agreement,  the Master Servicer
shall cause each  Servicer  to  establish  and  maintain  one or more  custodial
accounts at a depository institution (which may be a depository institution with
which the Master Servicer or any Servicer  establishes  accounts in the ordinary
course of its  servicing  activities),  the accounts of which are insured to the
maximum  extent  permitted  by the FDIC (each,  an "Escrow  Account")  and shall
deposit therein any collections of amounts  received with respect to amounts due
for taxes,  assessments,  water rates, Standard Hazard Insurance Policy premiums
or any comparable items for the account of the Mortgagors.  Withdrawals from any
Escrow  Account may be made (to the extent  amounts have been  escrowed for such
purpose)  only in  accordance  with the  applicable  Servicing  Agreement.  Each
Servicer shall be entitled to all  investment  income not required to be paid to
Mortgagors  on any  Escrow  Account  maintained  by such  Servicer.  The  Master
Servicer  shall  make  (or  cause  to be made)  to the  extent  provided  in the
applicable  Servicing  Agreement  advances to the extent  necessary  in order to
effect  timely  payment of taxes,  water  rates,  assessments,  Standard  Hazard
Insurance  Policy  premiums or comparable  items in connection  with the related
Mortgage Loan (to the extent that the Mortgagor is required,  but fails,  to pay
such  items),  provided  that it has  determined  that the funds so advanced are
recoverable from escrow payments,  reimbursement  pursuant to Section 4.02(v) or
otherwise.

     (b) Costs incurred by the Master  Servicer or by Servicers in effecting the
timely  payment  of taxes  and  assessments  on the  properties  subject  to the
Mortgage Loans may be added to the amount owing under the related  Mortgage Note
where the terms of the  Mortgage  Note so permit;  provided,  however,  that the
addition  of any such cost  shall not be taken  into  account  for  purposes  of
calculating the distributions to be made to  Certificateholders.  Such costs, to
the extent that they are unanticipated, extraordinary costs, and not ordinary or
routine costs shall be  recoverable by the Master  Servicer  pursuant to Section
4.02(v).

     Section 9.07. Termination of Servicing Agreements; Successor Servicers. (a)
                   --------------------------------------------------------
The Master Servicer shall be entitled to terminate the rights and obligations of
any Servicer under the  applicable  Servicing  Agreement in accordance  with the
terms and conditions of such  Servicing  Agreement and without any limitation by
virtue of this Agreement; provided, however, that in the event of termination of
any  Servicing  Agreement by the Master  Servicer or the related  Servicer,  the
Master  Servicer shall either act as Servicer of the related  Mortgage Loans, or
enter into a Servicing Agreement with a successor Servicer.

     (b) If the Master Servicer acts as Servicer,  it will not assume  liability
for  the  representations  and  warranties  of the  Servicer,  if  any,  that it
replaces. The Master Servicer shall use reasonable efforts to have the successor
Servicer  assume  liability for the  representations  and warranties made by the
terminated  Servicer in respect of the related  Mortgage Loans, and in the event
of any such  assumption  by the  successor  Servicer,  the Trustee or the Master
Servicer, as applicable,  may, in the exercise of its business judgment, release
the terminated Servicer from liability for such representations and warranties.

     Section 9.08. Master Servicer Liable for Enforcement.  Notwithstanding  any
                   --------------------------------------
Servicing  Agreement,  the Master Servicer shall remain  obligated and liable to
the Trustee and the Certificateholders in accordance with the provisions of this
Agreement,  to the extent of its obligations  hereunder,  without  diminution of
such  obligation  or  liability  by  virtue  of  such  Servicing  Agreements  or
arrangements.  The Master Servicer shall use commercially  reasonable efforts to
ensure that the Mortgage Loans are serviced in accordance with the provisions of
this  Agreement  and shall use  commercially  reasonable  efforts to enforce the
provisions   of   each   Servicing    Agreement   for   the   benefit   of   the
Certificateholders.  The Master  Servicer  shall be  entitled  to enter into any
agreement  with the Servicers  for  indemnification  of the Master  Servicer and
nothing  contained  in this  Agreement  shall be deemed to limit or modify  such
indemnification. Except as expressly set forth herein, the Master Servicer shall
have no liability  for the acts or omissions of any Servicer in the  performance
by such Servicer of its obligations under the related Servicing Agreement.

     Section 9.09. No Contractual  Relationship Between Servicers and Trustee or
                   -------------------------------------------------------------
Depositor.  Any  Servicing  Agreement  that may be  entered  into and any  other
- ---------
transactions or services  relating to the Mortgage Loans involving a Servicer in
its capacity as such and not as an originator shall be deemed to be between such
Servicer,  the Seller and the Master Servicer, and the Trustee and the Depositor
shall  not  be  deemed  parties  thereto  and  shall  have  no  claims,  rights,
obligations,  duties or liabilities  with respect to such Servicer except as set
forth in Section 9.10 hereof.

     Section  9.10.  Assumption  of Servicing  Agreement by Trustee.  (a) In the
                     ----------------------------------------------
event the Master  Servicer shall for any reason no longer be the Master Servicer
(including by reason of any Event of Default under this Agreement),  the Trustee
shall thereupon assume all of the rights and obligations of such Master Servicer
hereunder and under each  Servicing  Agreement  entered into with respect to the
Mortgage  Loans.  The Trustee,  its designee or any  successor  master  servicer
appointed  by the  Trustee  shall be deemed to have  assumed  all of the  Master
Servicer's  interest  herein and therein to the same extent as if such Servicing
Agreement  had been  assigned  to the  assuming  party,  except  that the Master
Servicer  shall not thereby be relieved of any liability or  obligations  of the
Master Servicer under such Servicing Agreement accruing prior to its replacement
as Master  Servicer,  and shall be liable to the Trustee,  and hereby  agrees to
indemnify  and hold  harmless the Trustee  from and against all costs,  damages,
expenses and liabilities  (including reasonable attorneys' fees) incurred by the
Trustee as a result of such liability or obligations of the Master  Servicer and
in connection with the Trustee's assumption (but not its performance,  except to
the extent that costs or  liability of the Trustee are created or increased as a
result of negligent or wrongful acts or omissions of the Master  Servicer  prior
to its  replacement as Master  Servicer) of the Master  Servicer's  obligations,
duties or responsibilities  thereunder;  provided that the Master Servicer shall
not indemnify or hold harmless the Trustee against negligent or wrongful acts or
omissions of the Trustee.

     (b) The Master Servicer that has been terminated shall, upon request of the
Trustee  but at the  expense of such Master  Servicer,  deliver to the  assuming
party all documents  and records  relating to each  Servicing  Agreement and the
related Mortgage Loans and an accounting of amounts collected and held by it and
otherwise use its best efforts to effect the orderly and  efficient  transfer of
each Servicing Agreement to the assuming party.

     Section 9.11. "Due-on-Sale" Clauses;  Assumption Agreements.  To the extent
                   ---------------------------------------------
provided in the applicable  Servicing  Agreement,  to the extent  Mortgage Loans
contain  enforceable  due-on-sale  clauses,  the Master Servicer shall cause the
Servicers to enforce such clauses in accordance  with the  applicable  Servicing
Agreement.  If applicable law prohibits the enforcement of a due-on-sale  clause
or such clause is  otherwise  not  enforced in  accordance  with the  applicable
Servicing  Agreement,  and, as a  consequence,  a Mortgage Loan is assumed,  the
original  Mortgagor  may be  released  from  liability  in  accordance  with the
applicable Servicing Agreement.

     Section 9.12.  Release of Mortgage  Files.  (a) Upon becoming  aware of the
                    --------------------------
payment in full of any Mortgage Loan, or the receipt by the Master Servicer of a
notification  that payment in full has been  escrowed in a manner  customary for
such purposes for payment to  Certificateholders  on the next Distribution Date,
the Master  Servicer  will, or will cause the applicable  Servicer to,  promptly
notify the Trustee  (or the  applicable  Custodian)  by a  certification  (which
certification  shall include a statement to the effect that all amounts received
in  connection  with such  payment  that are  required  to be  deposited  in the
Collection  Account  maintained by the Master Servicer  pursuant to Section 4.01
have been or will be so deposited) of a Servicing  Officer and shall request the
Trustee or the applicable  Custodian,  to deliver to the applicable Servicer the
related  Mortgage  File.  Upon receipt of such  certification  and request,  the
Trustee or the applicable  Custodian (with the consent,  and at the direction of
the Trustee), shall promptly release the related Mortgage File to the applicable
Servicer  and the Trustee  shall have no further  responsibility  with regard to
such  Mortgage  File.  Upon any such  payment in full,  the Master  Servicer  is
authorized, and each Servicer, to the extent such authority is delegated to such
Servicer by the Master  Servicer under the applicable  Servicing  Agreement,  is
authorized,  to give,  as agent  for the  Trustee,  as the  mortgagee  under the
Mortgage  that secured the Mortgage  Loan, an  instrument  of  satisfaction  (or
assignment  of mortgage  without  recourse)  regarding  the  Mortgaged  Property
subject to the Mortgage, which instrument of satisfaction or assignment,  as the
case may be,  shall be  delivered  to the  Person or  Persons  entitled  thereto
against receipt therefor of such payment, it being understood and agreed that no
expenses  incurred  in  connection  with  such  instrument  of  satisfaction  or
assignment, as the case may be, shall be chargeable to the Collection Account.

     (b) From time to time and as  appropriate  for the servicing or foreclosure
of any Mortgage Loan and in accordance with Accepted Servicing Practices and the
applicable  Servicing  Agreement,  the Trustee shall  execute such  documents as
shall be prepared and furnished to the Trustee by the Master  Servicer,  or by a
Servicer (in form reasonably  acceptable to the Trustee) and as are necessary to
the prosecution of any such  proceedings.  The Trustee or the Custodian,  shall,
upon  request of the Master  Servicer,  or of a  Servicer,  and  delivery to the
Trustee or the  applicable  Custodian,  of a trust receipt signed by a Servicing
Officer  substantially  in the form of Exhibit C,  release the related  Mortgage
File held in its possession or control to the Master Servicer (or the applicable
Servicer).  Such trust receipt shall obligate the Master  Servicer or applicable
Servicer to return the Mortgage File to the Trustee or Custodian, as applicable,
when the need therefor by the Master  Servicer or applicable  Servicer no longer
exists unless the Mortgage Loan shall be liquidated, in which case, upon receipt
of a certificate of a Servicing  Officer similar to that herein above specified,
the  trust  receipt  shall be  released  by the  Trustee  or the  Custodian,  as
applicable, to the Master Servicer (or the applicable Servicer).

     Section 9.13. Documents, Records and Funds in Possession of Master Servicer
                   -------------------------------------------------------------
To Be Held for Trustee.  (a) The Master  Servicer shall  transmit,  or cause the
- ----------------------
applicable  Servicer to transmit,  to the Trustee such documents and instruments
coming into the possession of the Master  Servicer or such Servicer from time to
time as are required by the terms  hereof to be  delivered  to the Trustee.  Any
funds  received  by the  Master  Servicer  or by a  Servicer  in  respect of any
Mortgage Loan or which  otherwise  are collected by the Master  Servicer or by a
Servicer  as  Liquidation  Proceeds  or  Insurance  Proceeds  in  respect of any
Mortgage   Loan  shall  be  held  for  the   benefit  of  the  Trustee  and  the
Certificateholders  subject to the Master Servicer's right to retain or withdraw
from the Collection  Account the Master Servicing Fee and other amounts provided
in this Agreement, and to the right of each Servicer to retain its Servicing Fee
as provided in the applicable  Servicing  Agreement.  The Master Servicer shall,
and shall (to the extent provided in the applicable  Servicing  Agreement) cause
each Servicer to, provide access to information and documentation  regarding the
Mortgage  Loans to the  Trustee,  its  agents and  accountants  at any time upon
reasonable  request and during normal business hours, and to  Certificateholders
that are savings and loan associations, banks or insurance companies, the Office
of Thrift Supervision, the FDIC and the supervisory agents and examiners of such
Office and  Corporation  or examiners of any other  federal or state  banking or
insurance regulatory  authority if so required by applicable  regulations of the
Office of Thrift  Supervision or other regulatory  authority,  such access to be
afforded  without charge but only upon reasonable  request in writing and during
normal business hours at the offices of the Master Servicer designated by it. In
fulfilling  such a request  the Master  Servicer  shall not be  responsible  for
determining the sufficiency of such information.

     (b) All Mortgage Files and funds collected or held by, or under the control
of, the Master  Servicer,  or any  Servicer,  in respect of any Mortgage  Loans,
whether  from  the  collection  of  principal  and  interest  payments  or  from
Liquidation  Proceeds  or  Insurance  Proceeds,  shall  be  held  by the  Master
Servicer,  or by  any  Servicer,  for  and on  behalf  of the  Trustee  and  the
Certificateholders  and shall be and remain the sole and  exclusive  property of
the Trustee; provided, however, that the Master Servicer and each Servicer shall
be entitled to setoff against,  and deduct from, any such funds any amounts that
are properly due and payable to the Master  Servicer or such Servicer under this
Agreement or the applicable Servicing Agreement.

     (c) The Master  Servicer hereby  acknowledges  that  concurrently  with the
execution  of this  Agreement,  the  Trustee  shall own or, to the extent that a
court of competent  jurisdiction shall deem the conveyance of the Mortgage Loans
from the Seller to the  Depositor  not to  constitute a sale,  the Trustee shall
have a  security  interest  in the  Mortgage  Loans  and in all  Mortgage  Files
representing  such Mortgage  Loans and in all funds now or hereafter held by, or
under the control of, a Servicer or the Master  Servicer  that are  collected by
any  Servicer or the Master  Servicer in  connection  with the  Mortgage  Loans,
whether as  scheduled  installments  of  principal  and  interest  or as full or
partial  prepayments  of  principal  or interest or as  Liquidation  Proceeds or
Insurance  Proceeds  or  otherwise,  and in all  proceeds of the  foregoing  and
proceeds of proceeds (but excluding any fee or other amounts to which a Servicer
is  entitled  under its  Servicing  Agreement,  or the  Master  Servicer  or the
Depositor is entitled to hereunder); and the Master Servicer agrees that so long
as the Mortgage Loans are assigned to and held by the Trustee,  all documents or
instruments  constituting part of the Mortgage Files, and such funds relating to
the Mortgage  Loans which come into the  possession  or custody of, or which are
subject to the control of, the Master  Servicer or any Servicer shall be held by
the Master  Servicer  or such  Servicer  for and on behalf of the Trustee as the
Trustee's  agent and bailee for purposes of perfecting  the  Trustee's  security
interest therein as provided by the applicable  Uniform Commercial Code or other
laws.

     (d) The Master  Servicer  agrees that it shall not, and shall not authorize
any Servicer to, create,  incur or subject any Mortgage Loans, or any funds that
are  deposited  in any  custodial  account,  Escrow  Account  or the  Collection
Account,  or any funds  that  otherwise  are or may become due or payable to the
Trustee,  to any  claim,  lien,  security  interest,  judgment,  levy,  writ  of
attachment  or other  encumbrance,  nor assert by legal action or otherwise  any
claim or right of setoff against any Mortgage Loan or any funds collected on, or
in connection with, a Mortgage Loan.

     Section 9.14.  Representations  and Warranties of the Master Servicer.  (a)
                    ------------------------------------------------------
The Master  Servicer  hereby  represents  and warrants to the  Depositor and the
Trustee, for the benefit of the Certificateholders, as of the Closing Date that:

          (i) it is validly existing and in good standing under the jurisdiction
     of its  formation,  and as Master  Servicer has full power and authority to
     transact  any and  all  business  contemplated  by  this  Agreement  and to
     execute,  deliver and comply with its  obligations  under the terms of this
     Agreement, the execution,  delivery and performance of which have been duly
     authorized  by all  necessary  corporate  action on the part of the  Master
     Servicer;

          (ii) the  execution  and  delivery  of this  Agreement  by the  Master
     Servicer  and  its  performance  and  compliance  with  the  terms  of this
     Agreement will not (A) violate the Master Servicer's charter or bylaws, (B)
     violate  any law or  regulation  or any  administrative  decree or order to
     which it is subject or (C)  constitute a default (or an event  which,  with
     notice or lapse of time, or both,  would  constitute a default)  under,  or
     result  in the  breach  of,  any  material  contract,  agreement  or  other
     instrument to which the Master  Servicer is a party or by which it is bound
     or to which any of its  assets are  subject,  which  violation,  default or
     breach would materially and adversely affect the Master Servicer's  ability
     to perform its obligations under this Agreement;

          (iii)  this  Agreement   constitutes,   assuming  due   authorization,
     execution and delivery hereof by the other  respective  parties  hereto,  a
     legal,  valid and binding  obligation of the Master  Servicer,  enforceable
     against it in accordance with the terms hereof,  except as such enforcement
     may be limited by bankruptcy,  insolvency,  reorganization,  moratorium and
     other laws affecting the enforcement of creditors'  rights in general,  and
     by general equity  principles  (regardless  of whether such  enforcement is
     considered in a proceeding in equity or at law);

          (iv) the Master  Servicer is not in default  with respect to any order
     or decree of any court or any order or  regulation  of any federal,  state,
     municipal or governmental  agency to the extent that any such default would
     materially and adversely affect its performance hereunder;

          (v) the Master Servicer is not a party to or bound by any agreement or
     instrument  or  subject  to any  charter  provision,  bylaw  or  any  other
     corporate restriction or any judgment, order, writ, injunction, decree, law
     or  regulation  that may  materially  and  adversely  affect its ability as
     Master  Servicer to perform its  obligations  under this  Agreement or that
     requires the consent of any third person to the execution of this Agreement
     or the  performance by the Master  Servicer of its  obligations  under this
     Agreement;

          (vi) no litigation is pending or, to the best of the Master Servicer's
     knowledge,  threatened against the Master Servicer which would prohibit its
     entering  into this  Agreement or  performing  its  obligations  under this
     Agreement;

          (vii)  the  Master  Servicer,  or an  affiliate  thereof  the  primary
     business of which is the  servicing of  conventional  residential  mortgage
     loans, is an FNMA-and FHLMC-approved seller/servicer;

          (viii) no consent,  approval,  authorization  or order of any court or
     governmental  agency or body is required  for the  execution,  delivery and
     performance by the Master  Servicer of or compliance by the Master Servicer
     with this Agreement or the consummation of the transactions contemplated by
     this Agreement,  except for such consents,  approvals,  authorizations  and
     orders (if any) as have been obtained;

          (ix)  the  consummation  of  the  transactions  contemplated  by  this
     Agreement  are in the ordinary  course of business of the Master  Servicer;
     and

          (x) the Master Servicer has obtained an Errors and Omissions Insurance
     Policy and a Fidelity Bond in accordance  with Section 9.02,  each of which
     is in full  force and  effect,  and each of which  provides  at least  such
     coverage as is required hereunder.

     (b) It is understood and agreed that the representations and warranties set
forth in this  Section  9.14 shall  survive the  execution  and delivery of this
Agreement. The Master Servicer shall indemnify the Depositor and the Trustee and
hold them harmless against any loss,  damages,  penalties,  fines,  forfeitures,
legal fees and related costs, judgments,  and other costs and expenses resulting
from any claim,  demand,  defense or  assertion  based on or grounded  upon,  or
resulting from, a breach of the Master Servicer's representations and warranties
contained in Section 9.14(a).  Notwithstanding anything in this Agreement to the
contrary,  the Master  Servicer  shall not be liable for  special,  indirect  or
consequential  losses or  damages  of any kind  whatsoever  (including,  but not
limited to, lost profits).  It is understood and agreed that the  enforcement of
the obligation of the Master Servicer set forth in this Section to indemnify the
Depositor  and the  Trustee as  provided in this  Section  constitutes  the sole
remedy  (other  than as set  forth in  Section  6.14) of the  Depositor  and the
Trustee,  respecting a breach of the foregoing  representations  and warranties.
Such  indemnification  shall survive any  termination of the Master  Servicer as
Master Servicer hereunder, and any termination of this Agreement.

     Any cause of action against the Master Servicer  relating to or arising out
of the breach of any  representations  and warranties made in this Section shall
accrue  upon  discovery  of such  breach by either  the  Depositor,  the  Master
Servicer  or the  Trustee or notice  thereof  by any one of such  parties to the
other parties.

     (c) It is understood and agreed that the  representations and warranties of
the  Depositor  set forth in  Sections  2.03(a)  through  (f) shall  survive the
execution  and delivery of this  Agreement.  The Depositor  shall  indemnify the
Master  Servicer  and hold it  harmless  against any loss,  damages,  penalties,
fines, forfeitures, legal fees and related costs, judgments, and other costs and
expenses  resulting  from any claim,  demand,  defense or assertion  based on or
grounded upon, or resulting  from, a breach of the  Depositor's  representations
and  warranties  contained  in  Sections  2.03(a)  through  (f)  hereof.  It  is
understood  and agreed that the  enforcement  of the obligation of the Depositor
set forth in this Section to indemnify  the Master  Servicer as provided in this
Section  constitutes the sole remedy of the Master Servicer  respecting a breach
by the  Depositor of the  representations  and  warranties  in Sections  2.03(a)
through (f) hereof.

     Any cause of action against the Depositor relating to or arising out of the
breach of the  representations  and warranties made in Sections  2.03(a) through
(f) hereof shall accrue upon discovery of such breach by either the Depositor or
the Master  Servicer or notice  thereof by any one of such  parties to the other
parties.

     Section 9.15.  Closing  Certificate  and Opinion.  On or before the Closing
                    ---------------------------------
Date,  the Master  Servicer  shall cause to be  delivered to the  Depositor  and
Lehman Brothers Inc. an Opinion of Counsel,  dated the Closing Date, in form and
substance reasonably  satisfactory to the Depositor and Lehman Brothers Inc., as
to the due authorization, execution and delivery of this Agreement by the Master
Servicer and the enforceability thereof.

     Section  9.16.  Standard  Hazard  and Flood  Insurance  Policies.  For each
                     ------------------------------------------------
Mortgage Loan, the Master Servicer shall maintain,  or cause to be maintained by
each Servicer, standard fire and casualty insurance and, where applicable, flood
insurance,  all in  accordance  with the  provisions  of this  Agreement and the
related  Servicing  Agreement,  as applicable.  It is understood and agreed that
such insurance shall be with insurers  meeting the eligibility  requirements set
forth in the  applicable  Servicing  Agreement  and that no  earthquake or other
additional  insurance is to be required of any  Mortgagor or to be maintained on
property  acquired in respect of a defaulted  loan,  other than pursuant to such
applicable  laws and  regulations  as shall at any time be in force and as shall
require such additional insurance.

     Pursuant to Section 4.01, any amounts collected by the Master Servicer,  or
by any  Servicer,  under any  insurance  policies  maintained  pursuant  to this
Section 9.16 (other than amounts to be applied to the  restoration  or repair of
the  property  subject to the related  Mortgage or released to the  Mortgagor in
accordance with the applicable  Servicing Agreement) shall be deposited into the
Collection  Account,  subject to withdrawal  pursuant to Section 4.02.  Any cost
incurred  by the  Master  Servicer  or any  Servicer  in  maintaining  any  such
insurance if the Mortgagor defaults in its obligation to do so shall be added to
the amount owing under the Mortgage Loan where the terms of the Mortgage Loan so
permit; provided, however, that the addition of any such cost shall not be taken
into  account  for  purposes  of  calculating  the  distributions  to be made to
Certificateholders  and shall be  recoverable  by the  Master  Servicer  or such
Servicer pursuant to Section 4.02(v).

     Section 9.17.  Presentment of Claims and Collection of Proceeds. The Master
                    ------------------------------------------------
Servicer  shall,  or shall cause each  Servicer  (to the extent  provided in the
applicable Servicing Agreement) to, prepare and present on behalf of the Trustee
and the  Certificateholders all claims under the Insurance Policies with respect
to the  Mortgage  Loans,  and take  such  actions  (including  the  negotiation,
settlement,  compromise  or  enforcement  of the  insured's  claim)  as shall be
necessary to realize recovery under such policies. Any proceeds disbursed to the
Master Servicer (or disbursed to a Servicer and remitted to the Master Servicer)
in  respect  of such  policies  or bonds  shall  be  promptly  deposited  in the
Collection Account upon receipt, except that any amounts realized that are to be
applied to the repair or  restoration  of the  related  Mortgaged  Property as a
condition  requisite to the  presentation of claims on the related Mortgage Loan
to the insurer under any  applicable  Insurance  Policy need not be so deposited
(or remitted).

     Section 9.18.  Maintenance of the Primary Mortgage Insurance Policies.  (a)
                    ------------------------------------------------------
The Master Servicer shall not take, or permit any Servicer  (consistent with the
applicable  Servicing  Agreement)  to take,  any  action  that  would  result in
non-coverage  under any applicable Primary Mortgage Insurance Policy of any loss
which, but for the actions of such Master Servicer or Servicer,  would have been
covered thereunder. The Master Servicer shall use its best reasonable efforts to
keep in force and effect,  or to cause each Servicer to keep in force and effect
(to the extent that the Mortgage  Loan  requires the  Mortgagor to maintain such
insurance),  primary  mortgage  insurance  applicable  to each  Mortgage Loan in
accordance  with the  provisions  of this  Agreement  and the related  Servicing
Agreement,  as applicable.  The Master  Servicer shall not, and shall not permit
any Servicer to, cancel or refuse to renew any such Primary  Mortgage  Insurance
Policy that is in effect at the date of the initial issuance of the Certificates
and is  required to be kept in force  hereunder  except in  accordance  with the
provisions of this Agreement and the related Servicing Agreement, as applicable.

     (b) The Master  Servicer  agrees to present,  or to cause each  Servicer to
present,  on behalf of the  Trustee  and the  Certificateholders,  claims to the
insurer under any Primary Mortgage  Insurance  Policies and, in this regard,  to
take such  reasonable  action as shall be necessary to permit recovery under any
Primary  Mortgage  Insurance  Policies  respecting   defaulted  Mortgage  Loans.
Pursuant to Section 4.01,  any amounts  collected by the Master  Servicer or any
Servicer under any Primary Mortgage Insurance Policies shall be deposited in the
Collection Account, subject to withdrawal pursuant to Section 4.02.

     Section 9.19.  Trustee To Retain Possession of Certain  Insurance  Policies
                    ------------------------------------------------------------
and  Documents.  The  Trustee  (or its  custodian,  if any,  as  directed by the
- --------------
Trustee),  shall retain  possession  and custody of the originals of the Primary
Mortgage  Insurance  Policies or  certificate of insurance if applicable and any
certificates  of renewal as to the  foregoing as may be issued from time to time
as contemplated by this Agreement. Until all amounts distributable in respect of
the Certificates have been distributed in full and the Master Servicer otherwise
has  fulfilled  its  obligations  under  this  Agreement,  the  Trustee  (or its
custodian,  if any, as directed by the Trustee) shall also retain possession and
custody of each Mortgage  File in  accordance  with and subject to the terms and
conditions of this  Agreement.  The Master  Servicer shall  promptly  deliver or
cause to be delivered to the Trustee (or its  custodian,  if any, as directed by
the Trustee), upon the execution or receipt thereof the originals of the Primary
Mortgage  Insurance  Policies and any certificates of renewal thereof,  and such
other  documents or instruments  that  constitute  portions of the Mortgage File
that come into the possession of the Master Servicer from time to time.

     Section  9.20.  Realization  Upon  Defaulted  Mortgage  Loans.  The  Master
                     ---------------------------------------------
Servicer shall use its reasonable best efforts to, or to cause each Servicer to,
foreclose  upon,  repossess or  otherwise  comparably  convert the  ownership of
Mortgaged  Properties  securing  such of the  Mortgage  Loans  as come  into and
continue in default and as to which no satisfactory arrangements can be made for
collection  of  delinquent  payments,  all in  accordance  with  the  applicable
Servicing Agreement.

     Section 9.21.  Compensation  to the Master  Servicer.  The Master  Servicer
                    -------------------------------------
shall (i) be  entitled,  at its  election,  either  (a) to pay itself the Master
Servicing  Fee, as reduced  pursuant to Section 5.05, in respect of the Mortgage
Loans out of any Mortgagor  payment on account of interest  prior to the deposit
of such payment in the  Collection  Account it maintains or (b) to withdraw from
the Collection Account, subject to Section 5.05, the Master Servicing Fee to the
extent  permitted  by  Section  4.02(iv).  The  Master  Servicer  shall  also be
entitled, at its election,  either (a) to pay itself the Master Servicing Fee in
respect  of  each  delinquent  Mortgage  Loan  master  serviced  by  it  out  of
Liquidation  Proceeds in respect of such Mortgage Loan or other  recoveries with
respect thereto to the extent  permitted in Section 4.02 or (b) to withdraw from
the Collection  Account it maintains the Master Servicing Fee in respect of each
Liquidated  Mortgage  Loan to the extent of such  Liquidation  Proceeds or other
recoveries,  to the extent permitted by Section 4.02. Servicing  compensation in
the form of assumption fees, if any, late payment charges, as collected, if any,
or otherwise  (including any Prepayment Penalty Amount) shall be retained by the
Master  Servicer (or the applicable  Servicer) and shall not be deposited in the
Collection  Account.  If the Master  Servicer  does not retain or  withdraw  the
Master Servicing Fee from the Collection  Account as provided herein, the Master
Servicer shall be entitled to direct the Trustee to pay the Master Servicing Fee
to such Master Servicer by withdrawal from the Certificate Account to the extent
that payments have been received with respect to the  applicable  Mortgage Loan.
The Master  Servicer  shall be  required to pay all  expenses  incurred by it in
connection  with  its  activities   hereunder  and  shall  not  be  entitled  to
reimbursement therefor except as provided in this Agreement. Pursuant to Section
4.01(e),  all  income  and gain  realized  from any  investment  of funds in the
Collection Account shall be for the benefit of the Master Servicer as additional
compensation.  The provisions of this Section 9.21 are subject to the provisions
of Section 6.14(b).

     Section  9.22.  REO  Property.  (a) In the event the  Trust  Fund  acquires
                     -------------
ownership  of any REO  Property  in respect of any  Mortgage  Loan,  the deed or
certificate of sale shall be issued to the Trustee, or to its nominee, on behalf
of the  Certificateholders.  The Master  Servicer shall use its reasonable  best
efforts  to  sell,  or,  to the  extent  provided  in the  applicable  Servicing
Agreement,   cause  the  applicable  Servicer  to  sell,  any  REO  Property  as
expeditiously  as  possible  and in  accordance  with  the  provisions  of  this
Agreement and the related Servicing Agreement, as applicable,  but in all events
within the time  period,  and subject to the  conditions  set forth in Article X
hereof.  Pursuant to its efforts to sell such REO Property,  the Master Servicer
shall  protect and  conserve,  or cause the  applicable  Servicer to protect and
conserve,  such REO  Property in the manner and to such  extent  required by the
applicable Servicing Agreement, subject to Article X hereof.

     (b) The Master  Servicer  shall  deposit or cause to be deposited all funds
collected and received by it, or recovered from any Servicer, in connection with
the operation of any REO Property in the Collection Account.

     (c) The  Master  Servicer  and the  applicable  Servicer,  upon  the  final
disposition  of any REO  Property,  shall be entitled to  reimbursement  for any
related  unreimbursed  Advances as well as any unpaid Master  Servicing  Fees or
Servicing Fees from Liquidation  Proceeds  received in connection with the final
disposition of such REO Property;  provided, that any such unreimbursed Advances
as well as any unpaid Master  Servicing Fees or Servicing Fees may be reimbursed
or paid, as the case may be, prior to final  disposition,  out of any net rental
income or other net amounts derived from such REO Property.

     (d)  The  Liquidation  Proceeds  from  the  final  disposition  of the  REO
Property,  net of any payment to the Master Servicer and the applicable Servicer
as provided above,  shall be deposited in the Collection  Account on or prior to
the  Determination  Date in the month following  receipt thereof (and the Master
Servicer  shall provide  prompt written notice to the Trustee upon such deposit)
and be remitted by wire transfer in immediately  available  funds to the Trustee
for deposit into the Certificate Account on the next succeeding Deposit Date.

     Section 9.23. [Omitted]
                   ---------

     Section 9.24. Reports to the Trustee. (a) Not later than 30 days after each
                   ----------------------
Distribution Date, the Master Servicer shall forward to the Trustee a statement,
deemed to have been certified by a Servicing  Officer,  setting forth the status
of the Collection  Account  maintained by the Master Servicer as of the close of
business on the related  Distribution  Date,  indicating that all  distributions
required by this Agreement to be made by the Master  Servicer have been made (or
if  any  required  distribution  has  not  been  made  by the  Master  Servicer,
specifying the nature and status thereof) and showing, for the period covered by
such  statement,  the  aggregate  of  deposits  into  and  withdrawals  from the
Collection Account  maintained by the Master Servicer.  Copies of such statement
shall be provided by the Master Servicer to the Depositor,  Attention:  Contract
Finance,  and, upon request,  any  Certificateholders  (or by the Trustee at the
Master  Servicer's  expense if the Master  Servicer  shall fail to provide  such
copies (unless (i) the Master  Servicer shall have failed to provide the Trustee
with  such  statement  or (ii)  the  Trustee  shall  be  unaware  of the  Master
Servicer's failure to provide such statement)).

     (b) Not later than two Business Days following each Distribution  Date, the
Master  Servicer shall deliver to the Person  designated by the Depositor,  in a
format  consistent with other  electronic  loan level reporting  supplied by the
Master   Servicer  in  connection  with  similar   transactions,   "loan  level"
information  with respect to the Mortgage Loans as of the related  Determination
Date,  to the  extent  that such  information  has been  provided  to the Master
Servicer by the Servicers or by the Depositor.

     Section 9.25. Annual Officer's Certificate as to Compliance. (a) The Master
                   ---------------------------------------------
Servicer  shall deliver to the Trustee and the Rating  Agencies on or before May
31 of  each  year,  commencing  on  May  31,  2000,  an  Officer's  Certificate,
certifying that with respect to the period ending on the  immediately  preceding
December 31; (i) such  Servicing  Officer has reviewed  the  activities  of such
Master  Servicer  during the preceding  calendar year or portion thereof and its
performance under this Agreement;  (ii) to the best of such Servicing  Officer's
knowledge,  based  on such  review,  such  Master  Servicer  has  performed  and
fulfilled its duties,  responsibilities  and obligations under this Agreement in
all material  respects  throughout such year, or, if there has been a default in
the fulfillment of any such duties, responsibilities or obligations,  specifying
each such  default  known to such  Servicing  Officer  and the nature and status
thereof,  (iii) nothing has come to the attention of such  Servicing  Officer to
lead such  Servicing  Officer to believe that any Servicer has failed to perform
any  of  its  duties,  responsibilities  and  obligations  under  its  Servicing
Agreement in all material respects throughout such year, or, if there has been a
material  default  in  the  performance  or  fulfillment  of  any  such  duties,
responsibilities  or  obligations,  specifying  each such default  known to such
Servicing  Officer  and the  nature  and  status  thereof,  and (iv) the  Master
Servicer has received from each Servicer such Servicer's  annual  certificate of
compliance and a copy of such  Servicer's  annual audit report,  in each case to
the extent required under the applicable  Servicing  Agreement,  or, if any such
certificate or report has not been received by the Master  Servicer,  the Master
Servicer  is using its best  reasonable  efforts to obtain such  certificate  or
report.

     (b) Copies of such  statements  shall be provided to any  Certificateholder
upon request,  by the Master Servicer or by the Trustee at the Master Servicer's
expense if the Master  Servicer  failed to provide  such copies  (unless (i) the
Master  Servicer shall have failed to provide the Trustee with such statement or
(ii) the Trustee  shall be unaware of the Master  Servicer's  failure to provide
such statement).

     Section 9.26.  Annual  Independent  Accountants'  Servicing  Report. If the
                    ----------------------------------------------------
Master Servicer has, during the course of any fiscal year, directly serviced any
of the Mortgage  Loans,  then the Master  Servicer at its expense  shall cause a
nationally  recognized  firm of  independent  certified  public  accountants  to
furnish a statement to the Trustee,  the Rating Agencies and the Depositor on or
before May 31 of each year, commencing on May 31, 2000, to the effect that, with
respect to the most recently ended fiscal year,  such firm has examined  certain
records and  documents  relating  to the Master  Servicer's  performance  of its
servicing  obligations  under this Agreement and pooling and servicing and trust
agreements in material  respects similar to this Agreement and to each other and
that, on the basis of such  examination  conducted  substantially  in compliance
with the audit  program for mortgages  serviced for FHLMC or the Uniform  Single
Attestation  Program for Mortgage Bankers,  such firm is of the opinion that the
Master  Servicer's  activities  have  been  conducted  in  compliance  with this
Agreement,  or  that  such  examination  has  disclosed  no  material  items  of
noncompliance  except  for (i)  such  exceptions  as such  firm  believes  to be
immaterial,  (ii) such other  exceptions as are set forth in such  statement and
(iii) such exceptions that the Uniform Single  Attestation  Program for Mortgage
Bankers or the Audit  Program for  Mortgages  Serviced  by FHLMC  requires it to
report.  Copies of such  statements  shall be provided to any  Certificateholder
upon  request by the Master  Servicer,  or by the  Trustee at the expense of the
Master  Servicer if the Master  Servicer  shall fail to provide such copies.  If
such report  discloses  exceptions that are material,  the Master Servicer shall
advise the Trustee whether such exceptions have been or are susceptible of cure,
and will take prompt action to do so.

     Section  9.27.  Merger or  Consolidation.  Any Person into which the Master
                     ------------------------
Servicer may be merged or consolidated, or any Person resulting from any merger,
conversion,  other change in form or  consolidation to which the Master Servicer
shall be a  party,  or any  Person  succeeding  to the  business  of the  Master
Servicer,  shall be the successor to the Master Servicer hereunder,  without the
execution  or filing of any paper or any  further  act on the part of any of the
parties  hereto,  anything  herein to the  contrary  notwithstanding;  provided,
however,  that the successor or resulting Person to the Master Servicer shall be
a Person that shall be qualified and approved to service mortgage loans for FNMA
or FHLMC and shall have a net worth of not less than $15,000,000.

     Section 9.28. Resignation of Master Servicer.  Except as otherwise provided
                   ------------------------------
in Sections 9.27 and 9.29 hereof,  the Master Servicer shall not resign from the
obligations and duties hereby imposed on it unless it or the Trustee  determines
that the Master  Servicer's  duties  hereunder are no longer  permissible  under
applicable law or are in material  conflict by reason of applicable law with any
other activities  carried on by it and cannot be cured.  Any such  determination
permitting  the  resignation  of the Master  Servicer  shall be  evidenced by an
Opinion of Counsel  that shall be  Independent  to such effect  delivered to the
Trustee. No such resignation shall become effective until the Trustee shall have
assumed, or a successor master servicer shall have been appointed by the Trustee
and  until  such   successor   shall  have   assumed,   the  Master   Servicer's
responsibilities   and  obligations   under  this  Agreement.   Notice  of  such
resignation shall be given promptly by the Master Servicer to the Depositor.

     Section 9.29.  Assignment  or Delegation of Duties by the Master  Servicer.
                    -----------------------------------------------------------
Except as expressly  provided  herein,  the Master  Servicer shall not assign or
transfer  any of its  rights,  benefits  or  privileges  hereunder  to any other
Person,  or delegate to or  subcontract  with, or authorize or appoint any other
Person to perform any of the duties, covenants or obligations to be performed by
the Master Servicer hereunder; provided, however, that the Master Servicer shall
have the right without the prior written  consent of the Trustee,  the Depositor
or the Rating Agencies to delegate or assign to or subcontract with or authorize
or appoint an  Affiliate  of the Master  Servicer  to perform  and carry out any
duties,  covenants or  obligations to be performed and carried out by the Master
Servicer   hereunder.   In  no  case,   however,   shall  any  such  delegation,
subcontracting  or assignment to an Affiliate of the Master Servicer relieve the
Master Servicer of any liability hereunder.  Notice of such permitted assignment
shall be given promptly by the Master Servicer to the Depositor and the Trustee.
If,  pursuant to any  provision  hereof,  the duties of the Master  Servicer are
transferred  to a successor  master  servicer,  the entire  amount of the Master
Servicing Fees and other  compensation  payable to the Master Servicer  pursuant
hereto, including amounts payable to or permitted to be retained or withdrawn by
the Master Servicer pursuant to Section 9.21 hereof, shall thereafter be payable
to such successor master servicer.

     Section 9.30.  Limitation  on Liability of the Master  Servicer and Others.
                    -----------------------------------------------------------
Neither the Master  Servicer nor any of the  directors,  officers,  employees or
agents of the Master Servicer shall be under any liability to the Trustee or the
Certificateholders for any action taken or for refraining from the taking of any
action in good faith  pursuant  to this  Agreement,  or for errors in  judgment;
provided,  however, that this provision shall not protect the Master Servicer or
any such person against any liability that would  otherwise be imposed by reason
of willful misfeasance, bad faith or negligence in its performance of its duties
or by reason of reckless  disregard  for its  obligations  and duties under this
Agreement. The Master Servicer and any director,  officer,  employee or agent of
the Master  Servicer  may rely in good faith on any  document  of any kind prima
facie  properly  executed  and  submitted by any Person  respecting  any matters
arising  hereunder.  The Master  Servicer shall be under no obligation to appear
in, prosecute or defend any legal action that is not incidental to its duties to
master service the Mortgage Loans in accordance  with this Agreement and that in
its opinion may involve it in any expenses or liability; provided, however, that
the Master Servicer may in its sole discretion undertake any such action that it
may deem  necessary or desirable in respect to this Agreement and the rights and
duties  of the  parties  hereto  and  the  interests  of the  Certificateholders
hereunder.  In such event,  the legal  expenses and costs of such action and any
liability  resulting  therefrom shall be expenses,  costs and liabilities of the
Trust Fund and the Master  Servicer shall be entitled to be reimbursed  therefor
out of the Collection Account it maintains as provided by Section 4.02.

     The Master  Servicer  shall not be liable for any acts or  omissions of any
Servicer.  In  particular,  the  Master  Servicer  shall not be  liable  for any
servicing errors or interruptions  resulting from any failure of any Servicer to
maintain computer and other information systems that are year-2000 compliant.

     Section 9.31.  Indemnification;  Third-Party  Claims.  The Master  Servicer
                    -------------------------------------
agrees to  indemnify  the  Depositor  and the  Trustee,  and hold them  harmless
against any and all claims, losses, penalties,  fines,  forfeitures,  legal fees
and related costs, judgments, and any other costs, liability,  fees and expenses
that the Depositor and the Trustee may sustain as a result of the failure of the
Master  Servicer to perform its duties and master  service the Mortgage Loans in
compliance with the terms of this Agreement. The Depositor and the Trustee shall
immediately  notify the Master Servicer if a claim is made by a third party with
respect to this Agreement or the Mortgage  Loans  entitling the Depositor or the
Trustee to indemnification hereunder, whereupon the Master Servicer shall assume
the  defense of any such claim and pay all  expenses  in  connection  therewith,
including counsel fees, and promptly pay,  discharge and satisfy any judgment or
decree which may be entered against it or them in respect of such claim.

                                   ARTICLE X

                              REMIC ADMINISTRATION

     Section 10.01.  REMIC  Administration.  (a) As set forth in the Preliminary
                     ---------------------
Statement  hereto,  the Trustee shall elect REMIC status in accordance  with the
REMIC Provisions with respect to each of the Lower Tier REMIC and the Upper Tier
REMIC. The Trustee shall make such elections on Forms 1066 or other  appropriate
federal tax or information return for the taxable year ending on the last day of
the calendar year in which the Certificates are issued. For the purposes of such
elections,  each Lower Tier  Interests,  other than the Class LTR  Interest,  is
hereby  designated  as a regular  interest  in the Lower  Tier  REMIC,  and each
Certificate,  other  than the Class R  Certificate,  is hereby  designated  as a
regular  interest  in the Upper Tier  REMIC.  The Class LTR  Interest  is hereby
designated  as the sole residual  interest in the Lower Tier REMIC.  The Class R
Certificate  evidences  ownership  of the Class LTR  Interest and is also hereby
designated as the sole residual interest in the Upper Tier REMIC.

     (b) The Closing  Date is hereby  designated  as the  "Startup  Day" of each
REMIC within the meaning of section 86OG(a)(9) of the Code.

     (c) The Trustee shall pay any and all tax related  expenses (not  including
taxes) of each  REMIC,  including  but not limited to any  professional  fees or
expenses related to audits or any  administrative  or judicial  proceedings with
respect to such REMIC that  involve the  Internal  Revenue  Service or state tax
authorities,  but only to the extent  that (i) such  expenses  are  ordinary  or
routine  expenses,  including  expenses of a routine  audit but not  expenses of
litigation  (except as described in (ii));  or (ii) such expenses or liabilities
(including  taxes and penalties) are  attributable  to the negligence or willful
misconduct  of the Trustee in fulfilling  its duties  hereunder  (including  its
duties as tax return  preparer).  The Trustee shall be entitled to reimbursement
of  expenses  to the extent  provided  in clause (i) above from the  Certificate
Account.

     (d) The Trustee shall prepare,  sign and file, all of each REMIC's  federal
and state tax and information returns as such REMIC's direct representative. The
expenses of preparing and filing such returns shall be borne by the Trustee.

     (e) The Trustee or its designee  shall  perform on behalf of each REMIC all
reporting and other tax compliance  duties that are the  responsibility  of such
REMIC under the Code, the REMIC Provisions,  or other compliance guidance issued
by the Internal  Revenue Service or any state or local taxing  authority.  Among
its other duties, if required by the Code, the REMIC  Provisions,  or other such
guidance,  the Trustee shall  provide (i) to the Treasury or other  governmental
authority  such  information  as is  necessary  for the  application  of any tax
relating to the transfer of a Residual Certificate to any disqualified person or
organization and (ii) to the  Certificateholders  such information or reports as
are required by the Code or REMIC Provisions.

     (f) The Trustee,  the Master Servicer and the Holders of Certificates shall
take any  action or cause the REMIC to take any  action  necessary  to create or
maintain  the status of such  REMIC as a REMIC  under the REMIC  Provisions  and
shall assist each other as necessary to create or maintain such status.  Neither
the Trustee,  the Master  Servicer  nor the Holder of any  Residual  Certificate
shall  take any  action,  cause the REMIC to take any action or fail to take (or
fail to cause to be taken) any action that, under the REMIC Provisions, if taken
or not taken, as the case may be, could (i) endanger the status of such REMIC as
a REMIC or (ii) result in the imposition of a tax upon such REMIC (including but
not limited to the tax on  prohibited  transactions  as defined in Code  Section
860F(a)(2) and the tax on prohibited  contributions set forth on Section 860G(d)
of the Code) (either such event,  an "Adverse  REMIC Event")  unless the Trustee
and the Master  Servicer  have received an Opinion of Counsel (at the expense of
the party  seeking  to take such  action) to the  effect  that the  contemplated
action will not endanger such status or result in the  imposition of such a tax.
In addition,  prior to taking any action with respect to the REMIC or the assets
therein,  or  causing  such  REMIC to take any  action,  which is not  expressly
permitted  under  the  terms  of  this  Agreement,  any  Holder  of  a  Residual
Certificate  will  consult  with the Trustee and the Master  Servicer,  or their
respective  designees,  in writing,  with  respect to whether  such action could
cause an Adverse  REMIC Event to occur with  respect to such REMIC,  and no such
Person shall take any such action or cause such REMIC to take any such action as
to which the Trustee or the Master  Servicer  has advised it in writing  that an
Adverse REMIC Event could occur.

     (g) Each  Holder of a Residual  Certificate  shall pay when due any and all
taxes imposed on the related REMIC by federal or state governmental authorities.
To  the   extent   that  such   Trust   taxes   are  not  paid  by  a   Residual
Certificateholder,  the  Trustee  shall  pay any  remaining  REMIC  taxes out of
current or future amounts otherwise  distributable to the Holder of the Residual
Certificate  in such REMIC or, if no such  amounts are  available,  out of other
amounts  held in the  Collection  Account,  and shall reduce  amounts  otherwise
payable to holders of regular interests in such REMIC, as the case may be.

     (h) The Trustee shall, for federal income tax purposes,  maintain books and
records with respect to each REMIC on a calendar year and on an accrual basis.

     (i) No  additional  contributions  of  assets  shall be made to any  REMIC,
except  as  expressly  provided  in this  Agreement  with  respect  to  eligible
substitute mortgage loans.

     (j)  Neither  the  Trustee  nor the Master  Servicer  shall  enter into any
arrangement  by which any REMIC  will  receive a fee or other  compensation  for
services.

     (k) Upon the request of any Rating  Agency,  the Trustee  shall  deliver to
such Rating Agency an Officer's  Certificate  stating the  Trustee's  compliance
with the provisions of this Section 10.01.

     Section  10.02.  Prohibited   Transactions  and  Activities.   Neither  the
                      ------------------------------------------
Depositor,  the Master  Servicer  nor the  Trustee  shall  sell,  dispose of, or
substitute for any of the Mortgage  Loans,  except in a disposition  pursuant to
(i) the  foreclosure of a Mortgage Loan,  (ii) the bankruptcy of the Trust Fund,
(iii) the  termination of each REMIC pursuant to Article VII of this  Agreement,
(iv) a substitution pursuant to Article II of this Agreement or (v) a repurchase
of  Mortgage  Loans  pursuant to Article II of this  Agreement,  nor acquire any
assets for any REMIC,  nor sell or dispose of any investments in the Certificate
Account for gain,  nor accept any  contributions  to the REMIC after the Closing
Date,  unless it has received an Opinion of Counsel (at the expense of the party
causing  such  sale,  disposition,   or  substitution)  that  such  disposition,
acquisition,  substitution,  or  acceptance  will not (a) affect  adversely  the
status of such REMIC as a REMIC or of the  Certificates  other than the Residual
Certificates as the regular  interests  therein,  (b) affect the distribution of
interest or principal on the Certificates,  (c) result in the encumbrance of the
assets  transferred  or  assigned  to the Trust  Fund  (except  pursuant  to the
provisions of this  Agreement) or (d) cause such REMIC to be subject to a tax on
prohibited  transactions  or  prohibited  contributions  pursuant  to the  REMIC
Provisions.

     Section  10.03.  Indemnification  with Respect to Certain Taxes and Loss of
                      ----------------------------------------------------------
REMIC Status.  (a) In the event that a REMIC fails to qualify as a REMIC,  loses
- ------------
its status as a REMIC, or incurs federal,  state or local taxes as a result of a
prohibited transaction or prohibited contribution under the REMIC Provisions due
to the negligent  performance by the Trustee of its duties and  obligations  set
forth herein, the Trustee shall indemnify the Holder of the Residual Certificate
against any and all losses, claims, damages,  liabilities or expenses ("Losses")
resulting from such negligence; provided, however, that the Trustee shall not be
liable for any such Losses  attributable to the action or inaction of the Master
Servicer,  the  Depositor,  or the  Holder  of  such  Residual  Certificate,  as
applicable,  nor for any such Losses resulting from  misinformation  provided by
the Holder of such  Residual  Certificate  on which the Trustee has relied.  The
foregoing  shall not be deemed to limit or restrict  the rights and  remedies of
the Holder of such Residual  Certificate now or hereafter  existing at law or in
equity.  Notwithstanding  the foregoing,  however, in no event shall the Trustee
have any  liability  (1) for any action or omission  that is taken in accordance
with and in  compliance  with  the  express  terms  of,  or  which is  expressly
permitted by the terms of, this Agreement, (2) for any Losses other than arising
out of a negligent  performance by the Trustee of its duties and obligations set
forth   herein,   and  (3)  for  any   special  or   consequential   damages  to
Certificateholders  (in  addition to payment of  principal  and  interest on the
Certificates).

     Section 10.04.  REO Property.  (a)  Notwithstanding  any other provision of
                     ------------
this Agreement, the Master Servicer,  acting on behalf of the Trustee hereunder,
shall  not,  and shall,  to the  extent  provided  in the  applicable  Servicing
Agreement,  not permit any Servicer to, rent, lease, or otherwise earn income on
behalf of any REMIC with respect to any REO Property  which might cause such REO
Property  to fail to qualify as  "foreclosure"  property  within the  meaning of
section  860G(a)(8)  of the Code or  result in the  receipt  by any REMIC of any
"income from  non-permitted  assets" within the meaning of section 860F(a)(2) of
the Code or any "net income from  foreclosure  property" which is subject to tax
under the REMIC Provisions unless the Master Servicer has advised, or has caused
the  applicable  Servicer to advise,  the Trustee in writing to the effect that,
under the REMIC Provisions, such action would not adversely affect the status of
the REMIC as a REMIC and any income generated for such REMIC by the REO Property
would not result in the imposition of a tax upon such REMIC.

     (b) The Master Servicer shall make, or shall cause the applicable  Servicer
to make,  reasonable efforts to sell any REO Property for its fair market value.
In any event,  however, the Master Servicer shall, or shall cause the applicable
Servicer to, dispose of any REO Property  within three years from the end of the
calendar  year of its  acquisition  by the Trust  Fund  unless the  Trustee  has
received a grant of extension  from the Internal  Revenue  Service to the effect
that, under the REMIC Provisions and any relevant proposed legislation and under
applicable  state  law,  the REMIC  may hold REO  Property  for a longer  period
without  adversely  affecting  the REMIC  status of such  REMIC or  causing  the
imposition  of a Federal  or state  tax upon  such  REMIC.  If the  Trustee  has
received such an extension,  then the Trustee, or the Master Servicer, acting on
its behalf hereunder, shall, or shall cause the applicable Servicer to, continue
to attempt to sell the REO  Property  for its fair market  value for such period
longer than three years as such extension  permits (the "Extended  Period").  If
the Trustee has not received  such an extension  and the Trustee,  or the Master
Servicer acting on behalf of the Trustee hereunder,  or the applicable  Servicer
is unable to sell the REO Property within 33 months after its acquisition by the
Trust Fund or if the Trustee has received such an extension, and the Trustee, or
the Master Servicer acting on behalf of the Trustee hereunder, is unable to sell
the REO Property  within the period  ending three months before the close of the
Extended  Period,  the Master  Servicer  shall,  or shall  cause the  applicable
Servicer to, before the end of the three year period or the Extended Period,  as
applicable,  (i)  purchase  such  REO  Property  at a  price  equal  to the  REO
Property's  fair market  value or (ii)  auction the REO  Property to the highest
bidder (which may be the Master Servicer) in an auction  reasonably  designed to
produce a fair price prior to the  expiration  of the  three-year  period or the
Extended Period, as the case may be.

                                   ARTICLE XI

                            MISCELLANEOUS PROVISIONS

     Section  11.01.  Binding  Nature of Agreement;  Assignment.  This Agreement
                      -----------------------------------------
shall be binding  upon and inure to the benefit of the parties  hereto and their
respective successors and permitted assigns.

     Section  11.02.  Entire  Agreement.  This  Agreement  contains  the  entire
                      -----------------
agreement and understanding among the parties hereto with respect to the subject
matter  hereof,  and  supersedes  all  prior  and  contemporaneous   agreements,
understandings, inducements and conditions, express or implied, oral or written,
of any nature whatsoever with respect to the subject matter hereof.  The express
terms hereof control and supersede any course of performance and/or usage of the
trade inconsistent with any of the terms hereof.

     Section  11.03.  Amendment.  (a) This Agreement may be amended from time to
                      ---------
time by the Depositor, the Master Servicer and the Trustee, without notice to or
the consent of any of the Holders, (i) to cure any ambiguity,  (ii) to cause the
provisions  herein to conform to or be consistent  with or in furtherance of the
statements  made  with  respect  to the  Certificates,  the  Trust  Fund or this
Agreement in any Offering  Document;  or to correct or supplement  any provision
herein which may be inconsistent with any other provisions herein, (iii) to make
any other  provisions  with respect to matters or questions  arising  under this
Agreement  or (iv)  to add,  delete,  or  amend  any  provisions  to the  extent
necessary or desirable to comply with any  requirements  imposed by the Code and
the REMIC  Provisions.  No such  amendment  effected  pursuant to the  preceding
sentence  shall,  as  evidenced by an Opinion of Counsel,  adversely  affect the
status of any REMIC created pursuant to this Agreement, nor shall such amendment
effected  pursuant  to clause  (iii) of such  sentence  adversely  affect in any
material  respect  the  interests  of any  Holder.  Prior to  entering  into any
amendment without the consent of Holders pursuant to this paragraph, the Trustee
may require an Opinion of Counsel (at the expense of the party  requesting  such
amendment) to the effect that such amendment is permitted  under this paragraph.
Any such  amendment  shall be deemed  not to  adversely  affect in any  material
respect  any Holder,  if the Trustee  receives  written  confirmation  from each
Rating  Agency that such  amendment  will not cause such Rating Agency to reduce
the then current rating assigned to the Certificates (and any Opinion of Counsel
requested  by the  Trustee  in  connection  with  any  such  amendment  may rely
expressly on such confirmation as the basis therefor).

     (b) This  Agreement may also be amended from time to time by the Depositor,
the Master  Servicer and the Trustee with the consent of the Holders of not less
than  66-2/3% of the Class  Principal  Amount (or  Percentage  Interest) of each
Class of Certificates  affected thereby for the purpose of adding any provisions
to or  changing  in any  manner or  eliminating  any of the  provisions  of this
Agreement or of  modifying  in any manner the rights of the  Holders;  provided,
however,  that no such  amendment  shall be made unless the Trustee  receives an
Opinion of Counsel, at the expense of the party requesting the change, that such
change will not  adversely  affect the status of the REMIC as a REMIC or cause a
tax to be imposed on such REMIC;  and provided  further,  that no such amendment
may (i) reduce in any  manner  the  amount of, or delay the timing of,  payments
received  on  Mortgage  Loans  which  are  required  to be  distributed  on  any
Certificate,  without  the  consent  of the Holder of such  Certificate  or (ii)
reduce the  aforesaid  percentages  of Class  Principal  Amount  (or  Percentage
Interest) of  Certificates  of each Class,  the Holders of which are required to
consent to any such amendment  without the consent of the Holders of 100% of the
Class Principal  Amount (or Class Notional Amount) of each Class of Certificates
affected  thereby.  For purposes of this  paragraph,  references  to "Holder" or
"Holders"  shall be deemed to  include,  in the case of any Class of  Book-Entry
Certificates, the related Certificate Owners.

     (c) Promptly after the execution of any such  amendment,  the Trustee shall
furnish written  notification of the substance of such amendment to each Holder,
the Depositor and to the Rating Agencies.

     (d) It shall not be necessary for the consent of Holders under this Section
11.03 to approve the particular form of any proposed amendment,  but it shall be
sufficient if such consent shall  approve the substance  thereof.  The manner of
obtaining  such consents and of evidencing  the  authorization  of the execution
thereof  by  Holders  shall be subject  to such  reasonable  regulations  as the
Trustee may prescribe.

     (e)  Notwithstanding  anything to the contrary in any Servicing  Agreement,
the Trustee shall not consent to any amendment of any Servicing Agreement except
pursuant to the standards  provided in this Section with respect to amendment of
this Agreement.

     Section 11.04. Voting Rights.  Except to the extent that the consent of all
                    -------------
affected Certificateholders is required pursuant to this Agreement, with respect
to any provision of this Agreement  requiring the consent of  Certificateholders
representing   specified  percentages  of  aggregate   outstanding   Certificate
Principal Amount (or Notional Amount),  Certificates owned by the Depositor, the
Master Servicer, the Trustee or any Servicer or Affiliates thereof are not to be
counted  so long as such  Certificates  are owned by the  Depositor,  the Master
Servicer, the Trustee or any Servicer or Affiliates thereof.

     Section  11.05.  Provision  of  Information.  (a) For so long as any of the
                      --------------------------
Certificates  of any  Series or Class are  "restricted  securities"  within  the
meaning of Rule  144(a)(3)  under the Act, each of the Depositor and the Trustee
agree to cooperate with each other to provide to any  Certificateholders  and to
any prospective purchaser of Certificates  designated by such Certificateholder,
upon  the  request  of such  Certificateholder  or  prospective  purchaser,  any
information  required to be provided to such holder or prospective  purchaser to
satisfy  the  condition  set  forth  in  Rule  144A(d)(4)  under  the  Act.  Any
reasonable,  out-of-pocket  expenses  incurred by the Trustee in providing  such
information shall be reimbursed by the Depositor.

     (b) The  Trustee  will  provide  to any  person  to whom a  Prospectus  was
delivered,  upon the request of such person specifying the document or documents
requested,  (i) a copy  (excluding  exhibits)  of any report on Form 8-K or Form
10-K filed with the  Securities  and  Exchange  Commission  pursuant  to Section
6.20(c) and (ii) a copy of any other document  incorporated  by reference in the
Prospectus.  Any reasonable  out-of-pocket  expenses  incurred by the Trustee in
providing copies of such documents shall be reimbursed by the Depositor.

     (c) On each  Distribution  Date,  the Trustee  shall deliver or cause to be
delivered by first class mail to the Depositor,  Attention:  Contract Finance, a
copy of the report delivered to Certificateholders pursuant to Section 4.03.

     Section  11.06.  Governing  Law.  THIS  AGREEMENT  SHALL  BE  CONSTRUED  IN
                      --------------
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, AND THE  OBLIGATIONS,  RIGHTS
AND REMEDIES OF THE PARTIES  HEREUNDER  SHALL BE DETERMINED  IN ACCORDANCE  WITH
SUCH LAWS WITHOUT REGARD TO CONFLICT OF LAWS PRINCIPLES APPLIED IN NEW YORK.

     Section 11.07. Notices. All demands,  notices and communications  hereunder
                    -------
shall be in writing and shall be deemed to have been duly given when received by
(a) in the case of the Depositor,  Structured Asset Securities Corporation,  200
Vesey Street, 12th Floor, New York, New York 10285, Attention: Mark Zusy, (b) in
the case of the Trustee,  The Chase  Manhattan  Bank, 450 West 33rd Street,  New
York, New York 10001-2697,  Attention:  Structured Finance Services,  and (c) in
the case of the Master  Servicer,  Aurora Loan Services Inc.,  2530 South Parker
Road, Suite 601, Aurora, Colorado 80014;  Attention:  Master Servicing, or as to
each party such other address as may hereafter be furnished by such party to the
other  parties in writing.  Any notice  required or  permitted to be mailed to a
Holder shall be given by first class mail,  postage  prepaid,  at the address of
such Holder as shown in the  Certificate  Register.  Any notice so mailed within
the time  prescribed in this Agreement  shall be  conclusively  presumed to have
been duly given, whether or not the Holder receives such notice.

     Section  11.08.  Severability  of  Provisions.  If any  one or  more of the
                      ----------------------------
covenants,  agreements,  provisions or terms of this Agreement  shall be for any
reason whatsoever held invalid, then such covenants,  agreements,  provisions or
terms  shall be  deemed  severable  from the  remaining  covenants,  agreements,
provisions or terms of this Agreement and shall in no way affect the validity or
enforceability  of the other provisions of this Agreement or of the Certificates
or the rights of the Holders thereof.

     Section 11.09.  Indulgences;  No Waivers. Neither the failure nor any delay
                     ------------------------
on the part of a party to exercise any right,  remedy,  power or privilege under
this  Agreement  shall  operate  as a waiver  thereof,  nor shall any  single or
partial exercise of any right,  remedy, power or privilege preclude any other or
further exercise of the same or of any other right,  remedy, power or privilege,
nor shall any waiver of any right,  remedy,  power or privilege  with respect to
any  occurrence  be  construed  as a  waiver  of such  right,  remedy,  power or
privilege  with  respect to any other  occurrence.  No waiver shall be effective
unless it is in writing and is signed by the party asserted to have granted such
waiver.

     Section  11.10.  Headings  Not  To  Affect  Interpretation.   The  headings
                      -----------------------------------------
contained in this  Agreement are for  convenience  of reference  only,  and they
shall not be used in the interpretation hereof.

     Section 11.11.  Benefits of Agreement.  Nothing in this Agreement or in the
                     ---------------------
Certificates,  express  or  implied,  shall give to any  Person,  other than the
parties to this Agreement and their successors  hereunder and the Holders of the
Certificates,  any benefit or any legal or  equitable  right,  power,  remedy or
claim under this Agreement, except to the extent specified in Section 11.14.

     Section 11.12.  Special Notices to the Rating  Agencies.  (a) The Depositor
                     ---------------------------------------
shall give prompt notice to the Rating  Agencies of the occurrence of any of the
following events of which it has notice:

          (i) any amendment to this Agreement pursuant to Section 11.03;

          (ii) any Assignment by the Master Servicer of its rights  hereunder or
     delegation of its duties hereunder;

          (iii) the  occurrence  of any Event of  Default  described  in Section
     6.14;

          (iv) any notice of termination  given to the Master Servicer  pursuant
     to Section 6.14 and any resignation of the Master Servicer hereunder;

          (v) the appointment of any successor to any Master  Servicer  pursuant
     to Section 6.14; and

          (vi) the making of a final payment pursuant to Section 7.02.

     (b) All notices to the Rating  Agencies  provided for this Section shall be
in writing and sent by first  class mail,  telecopy  or  overnight  courier,  as
follows:

     If to DCR, to:

     Duff & Phelps Credit Rating Co.
     55 East Monroe Street
     38th Floor
     Chicago, Illinois  60603
     Attention:  Residential
     MBS/SASCO 1999-ALS1

     If to Fitch, to:

     Fitch IBCA, Inc.
     1201 East 7th Street
     Powell, Wyoming  82435
     Attention:  Residential Mortgage Surveillance

     If to S&P, to:

     Standard & Poor's Rating Services
     25 Broadway, 12th Floor
     New York, New York  10004
     Attention: Residential Mortgages

     (c) The  Trustee  shall  deliver to the Rating  Agencies  reports  prepared
pursuant to Section 4.03.

     Section 11.13. Counterparts.  This Agreement may be executed in one or more
                    ------------
counterparts,  each of which shall be deemed to be an original, and all of which
together shall constitute one and the same instrument.

     Section  11.14.  Transfer  of  Servicing.  The Seller  agrees that it shall
                      -----------------------
provide  written notice to the Trustee and the Master Servicer thirty days prior
to any transfer or  assignment  by the Seller of its rights under any  Servicing
Agreement or of the  servicing  thereunder or delegation of its rights or duties
thereunder or any portion thereof to any Person other than the initial  Servicer
under  such  Servicing  Agreement.  In  addition,  the  ability of the Seller to
transfer  or assign its  rights and  delegate  its  duties  under any  Servicing
Agreement or to transfer the servicing  thereunder to a successor servicer shall
be subject to the following conditions:

          (i) Such  successor  servicer  must be qualified to service  loans for
     FNMA or FHLMC;

          (ii)  Such  successor   servicer  must  satisfy  the   seller/servicer
     eligibility  standards in the applicable Servicing Agreement,  exclusive of
     any  experience  in  mortgage  loan  origination,  and  must be  reasonably
     acceptable to the Master Servicer, whose approval shall not be unreasonably
     withheld;

          (iii) Such successor  servicer must execute and deliver to the Trustee
     and the Master  Servicer an  agreement,  in form and  substance  reasonably
     satisfactory  to the  Trustee  and the Master  Servicer,  that  contains an
     assumption by such successor  servicer of the due and punctual  performance
     and  observance of each covenant and condition to be performed and observed
     by the Servicer under the applicable Servicing Agreement;

          (iv) There must be  delivered to the Trustee a letter from each Rating
     Agency to the effect that such  transfer of servicing  will not result in a
     qualification, withdrawal or downgrade of the then-current rating of any of
     the Certificates;

          (v) The Seller  shall,  at its cost and expense,  take such steps,  or
     cause the  terminated  Servicer to take such steps,  as may be necessary or
     appropriate to effectuate and evidence the transfer of the servicing of the
     Mortgage Loans to such successor servicer,  including,  but not limited to,
     the  following:  (A) to the extent  required  by the terms of the  Mortgage
     Loans and by applicable federal and state laws and regulations,  the Seller
     shall  cause the prior  Servicer  to timely  mail to each  obligor  under a
     Mortgage Loan any required  notices or disclosures  describing the transfer
     of servicing of the Mortgage Loans to the successor servicer;  (B) prior to
     the effective  date of such  transfer of servicing,  the Seller shall cause
     the prior Servicer to transmit to any related insurer  notification of such
     transfer  of  servicing;  (C) on or  prior  to the  effective  date of such
     transfer of servicing, the Seller shall cause the prior Servicer to deliver
     to the  successor  servicer all  Mortgage  Loan  Documents  and any related
     records  or  materials;  (D) on or  prior  to the  effective  date  of such
     transfer  of  servicing,  the  Seller  shall  cause the prior  Servicer  to
     transfer to the successor  servicer,  or, if such  transfer  occurs after a
     Remittance Date but before the next succeeding  Deposit Date, to the Master
     Servicer,  all funds held by the Servicer in respect of the Mortgage Loans;
     (E) on or prior to the effective  date of such  transfer of servicing,  the
     Seller shall cause the prior  Servicer to, after the effective  date of the
     transfer of servicing  to the  successor  servicer,  continue to forward to
     such successor servicer,  within one Business Day of receipt, the amount of
     any payments or other  recoveries  received by the prior  Servicer,  and to
     notify the successor  servicer of the source and proper application of each
     such payment or recovery; and (F) the Seller shall cause the prior Servicer
     to, after the  effective  date of transfer of  servicing  to the  successor
     servicer,  continue to cooperate with the successor  servicer to facilitate
     such transfer in such manner and to such extent as the  successor  servicer
     may reasonably request.

<PAGE>
         IN WITNESS WHEREOF, the Depositor,  the Trustee and the Master Servicer
have  caused  their  names to be  signed  hereto  by their  respective  officers
hereunto duly authorized as of the day and year first above written.

                                  STRUCTURED ASSET SECURITIES

                                  CORPORATION, as Depositor

                                  By: /s/ Stanley P. Labanowski
                                      ------------------------------------------
                                      Name:  Stanley P. Labanowski
                                      Title:  Authorized Signatory

                                  THE CHASE MANHATTAN BANK,

                                  as Trustee

                                  By:  /s/ Kimberly Costa
                                      ------------------------------------------
                                       Name:  Kimberly Costa
                                       Title:  Vice President

                                  AURORA LOAN SERVICES INC., as Master Servicer

                                  By:  /s/ Ralph Lenzi
                                      ------------------------------------------
                                       Name:  Ralph Lenzi
                                       Title:  CEO

Solely for purposes of Section 11.14,
accepted and agreed to by:

LEHMAN CAPITAL, A DIVISION OF
LEHMAN BROTHERS HOLDINGS INC.

By:  /s/ Joseph J. Kelly
     ----------------------------
     Name:  Joseph J. Kelly
     Title:  Authorized Signatory

<PAGE>
                                    EXHIBIT A
                                    ---------

                              FORMS OF CERTIFICATES
<PAGE>
                                   EXHIBIT B-1
                                   -----------

                          FORM OF INITIAL CERTIFICATION

                                                  ______________
                                                       Date

Structured Asset Securities Corporation
200 Vesey Street
New York, New York 10285

     Re:  Trust Agreement (the "Trust Agreement"),  dated as of February 1, 1999
          among Structured Asset Securities Corporation, as Depositor, The Chase
          Manhattan  Bank, as Trustee,  and Aurora Loan Services Inc., as Master
          Servicer,  with respect to  Structured  Asset  Securities  Corporation
          Mortgage Pass-Through Certificates, Series 1999-ALS1

Ladies and Gentlemen:

     In  accordance  with  Section  2.02(a) of the Trust  Agreement,  subject to
review of the contents thereof,  the undersigned,  as Custodian on behalf of the
Trustee,  hereby certifies that it (or its custodian) has received the documents
listed  in  Section  2.01(b)  of the  Trust  Agreement  for each  Mortgage  File
pertaining to each  Mortgage Loan listed on Schedule A, to the Trust  Agreement,
subject to any exceptions noted on Schedule I hereto.

     Capitalized  words and phrases used herein and not otherwise defined herein
shall have the respective meanings assigned to them in the Trust Agreement. This
Certificate is subject in all respects to the terms of Section 2.02 of the Trust
Agreement and the Trust Agreement sections cross-referenced therein.

                                   [Custodian], on behalf of
                                   THE CHASE MANHATTAN BANK,
                                   as Trustee


                                   By:_____________________________________
                                      Name:
                                      Title:
<PAGE>

                                   EXHIBIT B-2
                                   -----------

                          FORM OF INTERIM CERTIFICATION


                                             ______________
                                                  Date

Structured Asset Securities Corporation
200 Vesey Street
New York, New York 10285

     Re:  Trust Agreement (the "Trust Agreement"),  dated as of February 1, 1999
          among Structured Asset Securities Corporation, as Depositor, The Chase
          Manhattan  Bank, as Trustee,  and Aurora Loan Services Inc., as Master
          Servicer,  with respect to  Structured  Asset  Securities  Corporation
          Mortgage Pass-Through Certificates, Series 1999-ALS1

Ladies and Gentlemen:

     In accordance with Section 2.02(b) of the Trust Agreement, the undersigned,
as Custodian on behalf of the Trustee, hereby certifies that as to each Mortgage
Loan listed in the Mortgage Loan Schedule  (other than any Mortgage Loan paid in
full or listed on  Schedule I hereto) it (or its  custodian)  has  received  the
applicable documents listed in Section 2.01(b) of the Trust Agreement.

     The undersigned  hereby  certifies that as to each Mortgage Loan identified
on the Mortgage Loan Schedule, other than any Mortgage Loan listed on Schedule I
hereto,  it has reviewed the documents  identified above and has determined that
each such  document  appears  regular  on its face and  appears to relate to the
Mortgage Loan identified in such document.

     Capitalized  words  and  phrases  used  herein  shall  have the  respective
meanings assigned to them in the Trust Agreement.  This Certificate is qualified
in all respects by the terms of said Trust Agreement including,  but not limited
to, Section 2.02(b).

                                   [Custodian], on behalf of
                                   THE CHASE MANHATTAN BANK,
                                   as Trustee

                                   By:_____________________________________
                                        Name:
                                        Title:
<PAGE>
                                   EXHIBIT B-3
                                   -----------

                           FORM OF FINAL CERTIFICATION

                                             ______________
                                                  Date

Structured Asset Securities Corporation
200 Vesey Street
New York, New York 10285

     Re:  Trust Agreement (the "Trust Agreement"),  dated as of February 1, 1999
          among Structured Asset Securities Corporation, as Depositor, The Chase
          Manhattan  Bank, as Trustee,  and Aurora Loan Services Inc., as Master
          Servicer,  with respect to  Structured  Asset  Securities  Corporation
          Mortgage Pass-Through Certificates, Series 1999-ALS1

Ladies and Gentlemen:

     In accordance with Section 2.02(d) of the Trust Agreement, the undersigned,
as Custodian on behalf of the Trustee, hereby certifies that as to each Mortgage
Loan listed in the Mortgage Loan Schedule  (other than any Mortgage Loan paid in
full or listed on  Schedule I hereto) it (or its  custodian)  has  received  the
applicable documents listed in Section 2.01(b) of the Trust Agreement.

     The undersigned  hereby  certifies that as to each Mortgage Loan identified
on the Mortgage Loan Schedule, other than any Mortgage Loan listed on Schedule I
hereto,  it has reviewed the documents listed above and has determined that each
such  document  appears to be  complete  and,  based on an  examination  of such
documents, the information set forth in the Mortgage Loan Schedule is correct.

     Capitalized  words  and  phrases  used  herein  shall  have the  respective
meanings assigned to them in the Trust Agreement.  This Certificate is qualified
in all respects by the terms of said Trust Agreement.

                                     [Custodian], on behalf of
                                     THE CHASE MANHATTAN BANK,
                                     as Trustee


                                     By:_____________________________________
                                          Name:
                                          Title:
<PAGE>
                                   EXHIBIT B-4
                                   -----------

                               FORM OF ENDORSEMENT

     Pay to the order of The Chase  Manhattan  Bank, as trustee (the  "Trustee")
under the Trust Agreement dated as of February 1, 1999,  among  Structured Asset
Securities  Corporation,  as  Depositor,  the  Trustee  and the Master  Servicer
relating  to  Structured  Asset  Securities  Corporation  Mortgage  Pass-Through
Certificates, Series 1999-ALS1, without recourse.

                                    ______________________________________
                                         [current signatory on note]

                                    By:___________________________________
                                         Name:
                                         Title:
<PAGE>
                                    EXHIBIT C
                                    ---------

                  REQUEST FOR RELEASE OF DOCUMENTS AND RECEIPT

                                             _______________
                                                  Date

[Addressed to Trustee
or, if applicable, custodian]

     In  connection  with the  administration  of the  mortgages  held by you as
Trustee  under a certain  Trust  Agreement  dated as of  February  1, 1999 among
Structured  Asset  Securities  Corporation,  as Depositor,  Aurora Loan Services
Inc.,  as Master  Servicer,  and you, as Trustee  (the "Trust  Agreement"),  the
undersigned  Master Servicer hereby requests a release of the Mortgage File held
by you as Trustee with respect to the following  described Mortgage Loan for the
reason indicated below.

     Mortgagor's Name:

     Address:

     Loan No.:

         Reason for requesting file:

     1. Mortgage Loan paid in full. (The Master  Servicer hereby  certifies that
all amounts  received in connection  with the loan have been or will be credited
to the Collection  Account or the Certificate  Account (whichever is applicable)
pursuant to the Trust Agreement.)

     2. The Mortgage Loan is being foreclosed.

     3. Mortgage Loan substituted.  (The Master Servicer hereby certifies that a
Qualifying Substitute Mortgage Loan has been assigned and delivered to you along
with the related Mortgage File pursuant to the Trust Agreement.)

     4. Mortgage Loan  repurchased.  (The Master Servicer hereby  certifies that
the  Purchase  Price  has  been  credited  to  the  Collection  Account  or  the
Certificate Account (whichever is applicable) pursuant to the Trust Agreement.)

     5. Other. (Describe)

     The undersigned  acknowledges  that the above Mortgage File will be held by
the  undersigned in accordance  with the  provisions of the Trust  Agreement and
will be  returned  to you  within ten (10) days of our  receipt of the  Mortgage
File,  except if the  Mortgage  Loan has been paid in full,  or  repurchased  or
substituted  for a  Qualifying  Substitute  Mortgage  Loan  (in  which  case the
Mortgage  File will be retained by us  permanently)  and except if the  Mortgage
Loan is being  foreclosed (in which case the Mortgage File will be returned when
no longer required by us for such purpose).

     Capitalized  terms used herein shall have the meanings  ascribed to them in
the Trust Agreement.

                                    _____________________________________
                                         [Name of Master Servicer]

                                    By:__________________________________
                                         Name:
                                         Title: Servicing Officer
<PAGE>
                                   EXHIBIT D-1
                                   -----------

          FORM OF RESIDUAL CERTIFICATE TRANSFER AFFIDAVIT (TRANSFEREE)

STATE OF       )
               )  ss.:
COUNTY OF      )

     [NAME OF OFFICER],  _________________  being first duly sworn,  deposes and
says:

     1. That he [she] is [title of officer] ________________________ of [name of
Purchaser]   _________________________________________   (the  "Purchaser"),   a
_______________________  [description  of type of  entity]  duly  organized  and
existing under the laws of the [State of __________]  [United States], on behalf
of which he [she] makes this affidavit.

     2. That the Purchaser's Taxpayer Identification Number is ______________.

     3. That the  Purchaser  is not a  "disqualified  organization"  within  the
meaning of Section  860E(e)(5) of the Internal  Revenue Code of 1986, as amended
(the   "Code")   and  will   not  be  a   "disqualified   organization"   as  of
__________________ [date of transfer], and that the Purchaser is not acquiring a
Residual  Certificate  (as defined in the  Agreement)  for the account of, or as
agent  (including  a broker,  nominee,  or other  middleman)  for, any person or
entity from which it has not received an affidavit  substantially in the form of
this affidavit.  For these purposes,  a  "disqualified  organization"  means the
United  States,  any  state  or  political   subdivision  thereof,  any  foreign
government, any international organization, any agency or instrumentality of any
of the foregoing  (other than an  instrumentality  if all of its  activities are
subject to tax and a majority of its board of  directors is not selected by such
governmental entity), any cooperative organization furnishing electric energy or
providing  telephone  service  to persons in rural  areas as  described  in Code
Section  1381(a)(2)(C),  any "electing large partnership"  within the meaning of
Section 775 of the Code, or any organization (other than a farmers'  cooperative
described in Code  Section  521) that is exempt from  federal  income tax unless
such organization is subject to the tax on unrelated  business income imposed by
Code Section 511.

     4. That the Purchaser is not, and on __________________  [date of transfer]
will not be, and is not and on such date will not be investing the assets of, an
employee benefit plan subject to the Employee  Retirement Income Security Act of
1974, as amended  ("ERISA"),  or a plan subject to Code Section 4975 or a person
or entity that is using the assets of any employee benefit plan or other plan to
acquire a Residual Certificate.

     5. That the Purchaser hereby acknowledges that under the terms of the Trust
Agreement (the "Agreement") among Structured Asset Securities  Corporation,  The
Chase  Manhattan  Bank,  as Trustee and Aurora  Loan  Services  Inc.,  as Master
Servicer,  dated as of February 1, 1999,  no transfer of a Residual  Certificate
shall be  permitted  to be made to any person  unless the Trustee has received a
certificate  from such  transferee to the effect that such  transferee is not an
employee  benefit plan subject to ERISA or a plan subject to Section 4975 of the
Code and is not using the assets of any  employee  benefit plan or other plan to
acquire a Residual Certificate.

     6. That the Purchaser does not hold REMIC residual securities as nominee to
facilitate the clearance and settlement of such  securities  through  electronic
book-entry  changes in accounts of participating  organizations  (such entity, a
"Book-Entry Nominee").

     7. That the Purchaser  does not have the intention to impede the assessment
or collection of any federal,  state or local taxes legally  required to be paid
with respect to such Residual Certificate.

     8. That the  Purchaser  will not  transfer  a Residual  Certificate  to any
person or entity (i) as to which the  Purchaser  has actual  knowledge  that the
requirements  set forth in paragraph  3,  paragraph 6 or paragraph 10 hereof are
not  satisfied or that the  Purchaser has reason to believe does not satisfy the
requirements  set forth in paragraph 7 hereof,  and (ii) without  obtaining from
the prospective Purchaser an affidavit  substantially in this form and providing
to the Trustee a written statement substantially in the form of Exhibit G to the
Agreement.

     9.  That the  Purchaser  understands  that,  as the  holder  of a  Residual
Certificate, the Purchaser may incur tax liabilities in excess of any cash flows
generated  by the  interest  and that it  intends to pay taxes  associated  with
holding such Residual Certificate as they become due.

     10. That the  Purchaser (i) is a U.S.  Person or (ii) is a Non-U.S.  Person
that holds a Residual  Certificate in connection  with the conduct of a trade or
business  within the United  States and has  furnished  the  transferor  and the
Trustee with an effective  Internal  Revenue Service Form 4224 or successor form
at the time and in the manner required by the Code.  "Non-U.S.  Person" means an
individual,  corporation,  partnership  or other  person other than a citizen or
resident  of the United  States,  a  corporation,  partnership  or other  entity
created  or  organized  in or under the laws of the  United  States or any state
thereof, including for this purpose, the District of Columbia, or an estate that
is subject to U.S. federal income tax regardless of the source of its income, or
a trust  if a court  within  the  United  States  is  able to  exercise  primary
supervision over the  administration  of the trust and one or more United States
trustees have authority to control all substantial decisions of the trust.

     11. That the Purchaser  agrees to such amendments of the Trust Agreement as
may be  required  to further  effectuate  the  restrictions  on  transfer of any
Residual Certificate to such a "disqualified  organization," an agent thereof, a
Book-Entry  Nominee,  or a person  that does not  satisfy  the  requirements  of
paragraph 7 and paragraph 10 hereof.

     12. That the Purchaser  consents to the  designation  of the Trustee as its
agent to act as "tax  matters  person" of the Trust Fund  pursuant  to the Trust
Agreement.
<PAGE>
     IN WITNESS WHEREOF, the Purchaser has caused this instrument to be executed
on its behalf, pursuant to authority of its Board of Directors, by its [title of
officer] this _____ day of __________, 19__.

                                    ______________________________________
                                            [name of Purchaser]

                                    By:___________________________________
                                         Name:
                                         Title:

     Personally   appeared   before  me  the   above-named   [name  of  officer]
________________,  known or proved to me to be the same person who  executed the
foregoing  instrument and to be the [title of officer]  _________________ of the
Purchaser,  and  acknowledged to me that he [she] executed the same as his [her]
free act and deed and the free act and deed of the Purchaser.

     Subscribed and sworn before me this _____ day of __________, 19__.

NOTARY PUBLIC


______________________________


COUNTY OF_____________________

STATE OF______________________

My commission expires the _____ day of __________, 19__.
<PAGE>
                                   EXHIBIT D-2
                                   -----------

          FORM OF RESIDUAL CERTIFICATE TRANSFER AFFIDAVIT (TRANSFEROR)

                                             ______________
                                                  Date

     Re:  Structured Asset Securities  Corporation
          Mortgage Pass-Through Certificates

     _______________________   (the  "Transferor")  has  reviewed  the  attached
affidavit of _____________________________ (the "Transferee"), and has no actual
knowledge  that such affidavit is not true and has no reason to believe that the
information  contained in paragraph 7 thereof is not true,  and has no reason to
believe  that the  Transferee  has the  intention  to impede the  assessment  or
collection of any federal, state or local taxes legally required to be paid with
respect to a Residual Certificate.  In addition,  the Transferor has conducted a
reasonable  investigation  at the  time  of the  transfer  and  found  that  the
Transferee  had  historically  paid  its  debts as they  came  due and  found no
significant  evidence to indicate that the  Transferee  will not continue to pay
its debts as they become due.

                                    Very truly yours,

                                    _______________________________
                                    Name:
                                    Title:
<PAGE>
                                    EXHIBIT E
                                    ---------

                               SERVICING AGREEMENT
<PAGE>
                                    EXHIBIT F
                                    ---------

                     FORM OF RULE 144A TRANSFER CERTIFICATE

     Re:  Structured Asset Securities  Corporation
          Mortgage    Pass-Through    Certificates
          Series 1999-ALS1
          ----------------------------------------

     Reference  is hereby  made to the Trust  Agreement  dated as of February 1,
1999 (the "Trust Agreement") among Structured Asset Securities  Corporation,  as
Depositor, Aurora Loan Services Inc., as Master Servicer and The Chase Manhattan
Bank, as Trustee.  Capitalized  terms used but not defined herein shall have the
meanings given to them in the Trust Agreement.

     This letter  relates to  $_________  initial  Certificate  Balance of Class
Certificates which are held in the form of Definitive Certificates registered in
the name of (the "Transferor").  The Transferor has requested a transfer of such
Definitive  Certificates for Definitive Certificates of such Class registered in
the name of [insert name of transferee].

     In connection with such request,  and in respect of such Certificates,  the
Transferor  hereby  certifies that such  Certificates  are being  transferred in
accordance with (i) the transfer  restrictions  set forth in the Trust Agreement
and the  Certificates and (ii) Rule 144A under the Securities Act to a purchaser
that the Transferor  reasonably  believes is a "qualified  institutional  buyer"
within  the  meaning  of Rule 144A  purchasing  for its own  account  or for the
account of a "qualified  institutional buyer", which purchaser is aware that the
sale to it is being made in reliance upon Rule 144A,  in a  transaction  meeting
the  requirements of Rule 144A and in accordance with any applicable  securities
laws of any state of the United States or any other applicable jurisdiction.

     This  certificate  and the  statements  contained  herein are made for your
benefit and the benefit of the Placement Agent and the Depositor.

                                    ________________________________________
                                             [Name of Transferor]

                                    By:_____________________________________
                                         Name:
                                         Title:

Dated: __________________, ________


<PAGE>
                                    EXHIBIT G
                                    ---------

                         FORM OF PURCHASER'S LETTER FOR
                        INSTITUTIONAL ACCREDITED INVESTOR

                                             ______________
                                                  Date

Dear Sirs:

     In  connection  with our  proposed  purchase of  $______________  principal
amount of Mortgage Pass-Through  Certificates,  Series 1999-ALS1 (the "Privately
Offered   Certificates")   of  Structured  Asset  Securities   Corporation  (the
"Depositor"), we confirm that:

(1)  We understand that the Privately  Offered  Certificates  have not been, and
     will not be,  registered  under the Securities Act of 1933, as amended (the
     "Securities Act"), and may not be sold except as permitted in the following
     sentence.  We agree,  on our own behalf and on behalf of any  accounts  for
     which we are  acting as  hereinafter  stated,  that if we  should  sell any
     Privately Offered  Certificates within three years of the later of the date
     of original issuance of the Privately Offered  Certificates or the last day
     on which such Privately Offered  Certificates are owned by the Depositor or
     any affiliate of the Depositor (which includes the Placement Agent) we will
     do so only (A) to the Depositor,  (B) to "qualified  institutional  buyers"
     (within the meaning of Rule 144A under the  Securities  Act) in  accordance
     with Rule 144A  under the  Securities  Act  ("QIBs"),  (C)  pursuant  to an
     exemption  from  registration  in accordance  with Rule 904 of Regulation S
     under the Securities  Act, (D) pursuant to the exemption from  registration
     provided by Rule 144 under the Securities  Act, or (E) to an  institutional
     "accredited investor" within the meaning of Rule 501(a)(1), (2), (3) or (7)
     of  Regulation  D  under  the   Securities  Act  that  is  not  a  QIB  (an
     "Institutional   Accredited  Investor")  which,  prior  to  such  transfer,
     delivers to the Trustee under the Trust  Agreement  dated as of February 1,
     1999 among the Depositor, Aurora Loan Services Inc., as Master Servicer and
     The Chase  Manhattan Bank, as Trustee (the  "Trustee"),  a signed letter in
     the form of this letter;  and we further agree,  in the  capacities  stated
     above,  to provide to any person  purchasing  any of the Privately  Offered
     Certificates  from us a notice  advising such purchaser that resales of the
     Privately Offered Certificates are restricted as stated herein.

(2)  We understand that, in connection with any proposed resale of any Privately
     Offered Certificates to an Institutional  Accredited  Investor,  we will be
     required to furnish to the Trustee and the Depositor a  certification  from
     such  transferee  in the form hereof to confirm that the  proposed  sale is
     being made pursuant to an exemption  from, or in a transaction  not subject
     to,  the  registration  requirements  of the  Securities  Act.  We  further
     understand  that the Privately  Offered  Certificates  purchased by us will
     bear a legend to the foregoing effect.

(3)  We are acquiring the Privately Offered Certificates for investment purposes
     and not  with a view  to,  or for  offer or sale in  connection  with,  any
     distribution in violation of the Securities Act. We have such knowledge and
     experience in financial and business matters as to be capable of evaluating
     the  merits  and  risks  of  our   investment  in  the  Privately   Offered
     Certificates,  and we and any account for which we are acting are each able
     to bear the economic risk of such investment.

(4)  We are an  Institutional  Accredited  Investor  and  we are  acquiring  the
     Privately Offered  Certificates  purchased by us for our own account or for
     one  or  more  accounts  (each  of  which  is an  Institutional  Accredited
     Investor) as to each of which we exercise sole investment discretion.

(5)  We have received such information as we deem necessary in order to make our
     investment decision.

(6)  If we are acquiring  ERISA-Restricted  Certificates,  we understand that in
     accordance with ERISA, the Code and the Exemption,  no Plan as to which the
     Purchaser, the Depositor, any Servicer or Master Servicer or the Trustee is
     a party in interest or disqualified  person, and no person acting on behalf
     of such a Plan may acquire such  Certificate  unless the acquisition  would
     constitute an exempt transaction under a statutory  exemption or any of the
     administrative exemptions issued by the U.S. Department of Labor.

     Terms used in this letter which are not otherwise  defined  herein have the
respective meanings assigned thereto in the Trust Agreement.
<PAGE>

     You and the  Depositor  are  entitled  to rely  upon  this  letter  and are
irrevocably authorized to produce this letter or a copy hereof to any interested
party in any administrative or legal proceeding or official inquiry with respect
to the matters covered hereby.

                                    Very truly yours,

                                    __________________________________
                                               [Purchaser]

                                    By________________________________
                                         Name:
                                         Title:
<PAGE>
                                    EXHIBIT H
                                    ---------

                       [FORM OF ERISA TRANSFER AFFIDAVIT]

STATE OF NEW YORK       )
                        )  ss.:
COUNTY OF NEW YORK      )

     The undersigned, being first duly sworn, deposes and says as follows:

     1. The undersigned is the  ______________________  of (the  "Investor"),  a
[corporation  duly  organized]  and existing  under the laws of  __________,  on
behalf of which he makes this affidavit.

     2. The  Investor  either (x) is not an  employee  benefit  plan  subject to
Section 406 or Section 407 of the  Employee  Retirement  Income  Security Act of
1974,  as amended  ("ERISA"),  or Section 4975 of the  Internal  Revenue Code of
1986, as amended (the  "Code"),  the Trustee of any such plan or a person acting
on behalf of any such plan nor a person using the assets of any such plan or (2)
if the  Investor is an  insurance  company,  such  Investor is  purchasing  such
Certificates with funds contained in an "Insurance  Company General Account" (as
such  term is  defined  in  Section  v(e) of the  Prohibited  Transaction  Class
Exemption  95-60  ("PTCE  95-60"))  and that the  purchase  and  holding of such
Certificates  are covered under PTCE 95-60;  or (y) shall deliver to the Trustee
and the Depositor an opinion of counsel (a "Benefit Plan Opinion")  satisfactory
to the Trustee and the  Depositor,  and upon which the Trustee and the Depositor
shall be  entitled to rely,  to the effect that the  purchase or holding of such
Certificate  by the  Investor  will not  result in the  assets of the Trust Fund
being  deemed  to be plan  assets  and  subject  to the  prohibited  transaction
provisions  of  ERISA  or the Code and  will  not  subject  the  Trustee  or the
Depositor to any obligation in addition to those  undertaken by such entities in
the Trust  Agreement,  which  opinion of counsel  shall not be an expense of the
Trustee or the Depositor.

     3. The  Investor  hereby  acknowledges  that  under  the terms of the Trust
Agreement (the "Agreement")  among Structured Asset Securities  Corporation,  as
Depositor,  Aurora  Loan  Services  Inc.,  as  Master  Servicer,  and The  Chase
Manhattan  Bank,  as Trustee,  dated as of February 1, 1999,  no transfer of the
ERISA-Restricted Certificates shall be permitted to be made to any person unless
the Depositor and Trustee have  received a certificate  from such  transferee in
the form hereof.

<PAGE>
     IN WITNESS WHEREOF,  the Investor has caused this instrument to be executed
on its behalf,  pursuant to proper  authority,  by its duly authorized  officer,
duly attested, this ____ day of _______________, 199 .

                                    ________________________________________
                                                   [Investor]

                                    By:_____________________________________
                                         Name:
                                         Title:

ATTEST:

_____________________________

STATE OF         )
                 )  ss.:
COUNTY OF        )

     Personally appeared before me the above-named

     _________________, known or proved to me to be the same person who executed
the foregoing instrument and to be the  _________________  of the Investor,  and
acknowledged that he executed the same as his free act and deed and the free act
and deed of the Investor.

     Subscribed and sworn before me this _____ day of ___________ 199__.

                                    _______________________________
                                    NOTARY PUBLIC

                                    My  commission  expires the
                                    ____  day  of   __________, 19__.

<PAGE>
                                    EXHIBIT I
                                    ---------

                            MONTHLY REMITTANCE ADVICE


<PAGE>
                                    EXHIBIT J
                                    ---------

                      MONTHLY ELECTRONIC DATA TRANSMISSION

<PAGE>
                                    EXHIBIT K
                                    ---------

                               CUSTODIAL AGREEMENT


<PAGE>
                                   SCHEDULE A
                                   ----------

                             MORTGAGE LOAN SCHEDULE


<PAGE>
                                   SCHEDULE B
                                   ----------

                           PRINCIPAL AMOUNT SCHEDULES

                                [Not Applicable]









================================================================================






          LEHMAN CAPITAL, A DIVISION OF LEHMAN BROTHERS HOLDINGS INC.,

                                     SELLER


                                       and


                    STRUCTURED ASSET SECURITIES CORPORATION,

                                    PURCHASER



                   MORTGAGE LOAN SALE AND ASSIGNMENT AGREEMENT

                          Dated as of February 1, 1999






================================================================================




<PAGE>





                                TABLE OF CONTENTS

Section                                                                  Page
- -------                                                                  ----

                                    ARTICLE I

                          CONVEYANCE OF MORTGAGE LOANS

1.01.  Sale of Mortgage Loans..............................................2
1.02.  Delivery of Documents...............................................2
1.03.  Review of Documentation.............................................2
1.04.  Representations and Warranties of Lehman Capital....................3
1.05.  Grant Clause........................................................7
1.06  Assignment by Depositor..............................................7

                                                ARTICLE II

                            MISCELLANEOUS PROVISIONS

2.01.  Binding Nature of Agreement; Assignment.............................7
2.02.  Entire Agreement....................................................7
2.03.  Amendment...........................................................7
2.04.  Governing Law.......................................................8
2.05.  Severability of Provisions..........................................8
2.06.  Indulgences; No Waivers.............................................8
2.07.  Headings Not to Affect Interpretation...............................9
2.08.  Benefits of Agreement...............................................9
2.09.  Counterparts........................................................9


                                    SCHEDULES

SCHEDULE A    Mortgage Loan Schedule


<PAGE>



     This MORTGAGE LOAN SALE AND ASSIGNMENT AGREEMENT is executed by and between
Lehman Capital, A Division of Lehman Brothers Holdings Inc. ("Lehman  Capital"),
and Structured Asset Securities  Corporation (the "Depositor"),  dated as of the
1st day of February, 1999.

     All  capitalized  terms not  defined  herein  shall have the same  meanings
assigned to such terms in that certain Trust Agreement (the "Trust  Agreement"),
dated as of February 1, 1999, among the Depositor, Aurora Loan Services Inc., as
Master Servicer, and The Chase Manhattan Bank, as Trustee (the "Trustee").

                              W I T N E S S E T H:
                              - - - - - - - - - - 

     WHEREAS,  pursuant  to  the  following  specified  mortgage  loan  transfer
agreements   (each  a  "Transfer   Agreement",   and  together   the   "Transfer
Agreements"),  Lehman  Capital has purchased  from certain  transferors  (each a
"Transferor", and together the "Transferors"), certain mortgage loans identified
on the Mortgage Loan Schedule attached hereto as Exhibit A:

     1.  Mortgage Loan Purchase and Warranties Agreement,  dated as of November
     30, 1999, between Lehman Capital and Headlands Mortgage Company; and

     2.  Loan Purchase Agreement  (Servicing  Released),  dated March 23, 1999,
     between Lehman Capital and Aurora Loan Services Inc.

     WHEREAS, each Transfer Agreement permits the purchaser to assign its rights
and interests in such agreement and to delegate its obligations thereunder;

     WHEREAS,  Lehman  Capital  desires to sell,  without  recourse,  all of its
right, title and interest in the Mortgage Loans to the Depositor,  to assign all
of its rights and interest under each Transfer Agreement, and to delegate all of
its obligations thereunder, to the Depositor; and

     WHEREAS,  Lehman Capital and the Depositor  acknowledge  and agree that the
Depositor  will  assign all of its rights and  delegate  all of its  obligations
hereunder to the Trustee,  and that each  reference  herein to the  Depositor is
intended,  unless otherwise specified,  to mean the Depositor or the Trustee, as
assignee, whichever is the owner of the Mortgage Loans from time to time.

     NOW, THEREFORE, in consideration of the mutual agreements herein set forth,
and for other good and valuable consideration, the receipt and adequacy of which
are hereby acknowledged, Lehman Capital and the Depositor agree as follows:


                                   ARTICLE I.

                          CONVEYANCE OF MORTGAGE LOANS

     Section 1.01. Sale of Mortgage Loans.  Concurrently  with the execution and
                   ----------------------
delivery of this Agreement,  Lehman Capital does hereby  transfer,  assign,  set
over,  deposit with and otherwise  convey to the  Depositor,  without  recourse,
subject to Sections 1.03 and 1.04,  all the right,  title and interest of Lehman
Capital in and to the Mortgage Loans identified on Schedule A hereto,  having an
aggregate  principal  balance as of the Cut-off  Date of  $288,773,612.87.  Such
conveyance  includes,  without  limitation,  the right to all  distributions  of
principal and interest  received on or with respect to the Mortgage  Loans on or
after  February 1, 1999 (other than payments of principal and interest due on or
before such date),  and all such payments due after such date but received prior
to such date and  intended by the related  Mortgagors  to be applied  after such
date,  together with all of Lehman Capital's right, title and interest in and to
each  related  account  and all  amounts  from time to time  credited to and the
proceeds of such  account,  any REO Property and the  proceeds  thereof,  Lehman
Capital's rights under any Insurance Policies related to the Mortgage Loans, and
Lehman  Capital's  security  interest  in any  collateral  pledged to secure the
Mortgage   Loans,   including  the  Mortgaged   Properties  and  any  Additional
Collateral.

     Concurrently  with the  execution  and delivery of this  Agreement,  Lehman
Capital  hereby  assigns to the Depositor  all of its rights and interest  under
each Transfer  Agreement,  and delegates to the Depositor all of its obligations
thereunder.  Concurrently with the execution  hereof,  the Depositor tenders the
purchase price of $288,773,612.87.  The Depositor hereby accepts such assignment
and  delegation,  and shall be entitled  to  exercise  all such rights of Lehman
Capital under each Transfer  Agreement,  as if the Depositor had been a party to
each Transfer Agreement.

     Section 1.02.  Delivery of Documents.  (a) In connection with such transfer
                    ---------------------
and  assignment  of the Mortgage  Loans  hereunder,  Lehman  Capital does hereby
deliver,  or cause to be  delivered,  to the  Depositor  (or its  designee)  the
documents or  instruments  with respect to each  Mortgage Loan (each a "Mortgage
File") so  transferred  and assigned,  as specified in the  applicable  Transfer
Agreement.

          (b) For  Mortgage  Loans (if any) that have been prepaid in full after
the  Cut-off  Date and prior to the Closing  Date,  Lehman  Capital,  in lieu of
delivering the related  Mortgage  Files,  herewith  delivers to the Depositor an
Officer's  Certificate  which shall  include a statement  to the effect that all
amounts  received in  connection  with such  prepayment  that are required to be
deposited in the account  maintained  by the Servicer for such purpose have been
so deposited.

     Section 1.03.  Review of  Documentation.  The  Depositor,  by execution and
                    ------------------------
delivery  hereof,  acknowledges  receipt of the Mortgage Files pertaining to the
Mortgage Loans listed on the Mortgage Loan  Schedule,  subject to review thereof
by LaSalle National Bank, as custodian or U.S. Bank Trust National  Association,
as custodian  (each,  a  "Custodian"),  as applicable,  for the  Depositor.  The
applicable Custodian is required to review, within 45 days following the Closing
Date,  each  applicable  Mortgage  File.  If in the  course of such  review  the
applicable  Custodian  identifies any Material  Defect,  Lehman Capital shall be
obligated to cure such defect or to  repurchase  the related  Mortgage Loan from
the Depositor (or, at the direction of and on behalf of the Depositor,  from the
Trust Fund), or to substitute a Qualifying Substitute Mortgage Loan therefor, in
each  case to the  same  extent  and in the  same  manner  as the  Depositor  is
obligated to the Trustee and the Trust Fund under  Section  2.02(c) of the Trust
Agreement.

     Section 1.04.  Representations and Warranties of Lehman Capital. (a) Lehman
                    ------------------------------------------------
Capital  hereby  represents  and warrants to the  Depositor  that as of the date
hereof that:

          (i)   Lehman Capital is a corporation duly organized, validly existing
     and in good  standing  under the laws  governing its creation and existence
     and has full corporate power and authority to own its property, to carry on
     its  business  as  presently  conducted,  and to enter into and perform its
     obligations under this Agreement;

         (ii)   the execution and delivery by Lehman  Capital of this  Agreement
     have been duly authorized by all necessary  corporate action on the part of
     Lehman Capital;  neither the execution and delivery of this Agreement,  nor
     the consummation of the transactions  herein  contemplated,  nor compliance
     with the provisions hereof, will conflict with or result in a breach of, or
     constitute a default under, any of the provisions of any law,  governmental
     rule,  regulation,  judgment,  decree or order binding on Lehman Capital or
     its  properties or the  certificate  of  incorporation  or bylaws of Lehman
     Capital;

        (iii)   the  execution,  delivery and  performance  by Lehman Capital of
     this Agreement and the consummation of the transactions contemplated hereby
     do not require  the  consent or  approval  of, the giving of notice to, the
     registration  with,  or the taking of any other  action in respect  of, any
     state,  federal or other governmental  authority or agency,  except such as
     has been obtained, given, effected or taken prior to the date hereof;

         (iv)   this  Agreement  has been duly  executed and delivered by Lehman
     Capital and,  assuming  due  authorization,  execution  and delivery by the
     Depositor,  constitutes a valid and binding  obligation  of Lehman  Capital
     enforceable  against  it in  accordance  with  its  terms  except  as  such
     enforceability  may be subject to (A) applicable  bankruptcy and insolvency
     laws and other  similar laws  affecting  the  enforcement  of the rights of
     creditors  generally  and (B) general  principles  of equity  regardless of
     whether such enforcement is considered in a proceeding in equity or at law;
     and

         (v)    there are no actions,  suits or  proceedings  pending or, to the
     knowledge of Lehman Capital, threatened or likely to be asserted against or
     affecting Lehman Capital,  before or by any court,  administrative  agency,
     arbitrator or governmental body (A) with respect to any of the transactions
     contemplated  by this  Agreement  or (B) with  respect to any other  matter
     which in the  judgment of Lehman  Capital will be  determined  adversely to
     Lehman  Capital  and  will  if  determined   adversely  to  Lehman  Capital
     materially and adversely affect it or its business,  assets,  operations or
     condition,  financial  or  otherwise,  or  adversely  affect its ability to
     perform its obligations under this Agreement.

          (b) The representations and warranties of each Transferor with respect
to the Mortgage Loans in the applicable  Transfer  Agreement were made as of the
date of such Transfer Agreement. To the extent that any fact, condition or event
with  respect  to  a  Mortgage   Loan   constitutes  a  breach  of  both  (i)  a
representation  or  warranty  of a  Transferor  under  the  applicable  Transfer
Agreement  and (ii) a  representation  or warranty of Lehman  Capital under this
Agreement,  the only  right or  remedy  of the  Depositor  shall be the right to
enforce the obligations of such Transferor  under any applicable  representation
or  warranty  made  by it.  The  Depositor  acknowledges  and  agrees  that  the
representations  and  warranties of Lehman  Capital in this Section  1.04(b) are
applicable  only to facts,  conditions or events that do not constitute a breach
of any  representation  or  warranty  made  by  the  related  Transferor  in the
applicable  Transfer  Agreement.  Lehman  Capital  shall have no  obligation  or
liability with respect to any breach of a representation  or warranty made by it
with respect to the Mortgage Loans if the fact,  condition or event constituting
such breach also  constitutes a breach of a  representation  or warranty made by
the related Transferor in such Transfer Agreement, without regard to whether the
related  Transferor  fulfills  its  contractual  obligations  in respect of such
representation or warranty. Subject to the foregoing,  Lehman Capital represents
and warrants upon delivery of the Mortgage Loans to the Depositor hereunder,  as
to each, that:

               (i) The  information set forth with respect to the Mortgage Loans
     on the Mortgage Loan Schedule  provides an accurate listing of the Mortgage
     Loans,  and the  information  with  respect  to each  Mortgage  Loan on the
     Mortgage Loan Schedule is true and correct in all material  respects at the
     date or dates respecting which such information is given;

               (ii) There are no  defaults  in  complying  with the terms of any
     Mortgage,  and Lehman  Capital has no notice as to any taxes,  governmental
     assessments,  insurance  premiums,  water,  sewer  and  municipal  charges,
     leasehold  payments or ground rents which  previously  became due and owing
     but which have not been paid;

               (iii)  Except in the case of  Cooperative  Loans,  each  Mortgage
     requires  all  buildings  or other  improvements  on the related  Mortgaged
     Property to be insured by a generally  acceptable  insurer  against loss by
     fire,  hazards of extended coverage and such other hazards as are customary
     in the area where the related  Mortgaged  Property  is located  pursuant to
     insurance policies conforming to the requirements of the guidelines of FNMA
     or FHLMC. If upon origination of the Mortgage Loan, the Mortgaged  Property
     was in an area identified in the Federal Register by the Federal  Emergency
     Management Agency as having special flood hazards (and such flood insurance
     has been made available) a flood insurance  policy meeting the requirements
     of the current guidelines of the Federal Flood Insurance  Administration is
     in  effect  which  policy  conforms  to the  requirements  of  the  current
     guidelines of the Federal  Flood  Insurance  Administration.  Each Mortgage
     obligates the related Mortgagor thereunder to maintain the hazard insurance
     policy at the Mortgagor's cost and expense,  and on the Mortgagor's failure
     to do so, authorizes the holder of the Mortgage to obtain and maintain such
     insurance at such Mortgagor's cost and expense,  and to seek  reimbursement
     therefor from the  Mortgagor.  Where  required by state law or  regulation,
     each  Mortgagor has been given an  opportunity to choose the carrier of the
     required  hazard  insurance,  provided  the  policy  is not a  "master"  or
     "blanket"  hazard  insurance  policy  covering the common  facilities  of a
     planned  unit  development.  The hazard  insurance  policy is the valid and
     binding obligation of the insurer, is in full force and effect, and will be
     in full force and effect and inure to the benefit of the Depositor upon the
     consummation of the transactions contemplated by this Agreement.

               (iv)   Each   Mortgage   has  not  been   satisfied,   cancelled,
     subordinated or rescinded,  in whole or in part, and the Mortgaged Property
     has not been released  from the lien of the Mortgage,  in whole or in part,
     nor has any  instrument  been  executed that would effect any such release,
     cancellation, subordination or recision;

               (v) Each Mortgage evidences a valid, subsisting,  enforceable and
     perfected  first lien on the  related  Mortgaged  Property  (including  all
     improvements  on the  Mortgaged  Property).  The  lien of the  Mortgage  is
     subject only to: (1) liens of current real property  taxes and  assessments
     not yet  due and  payable  and,  if the  related  Mortgaged  Property  is a
     condominium  unit,  any lien for common charges  permitted by statute,  (2)
     covenants, conditions and restrictions,  rights of way, easements and other
     matters  of public  record  as of the date of  recording  of such  Mortgage
     acceptable  to  mortgage  lending  institutions  in the area in  which  the
     related Mortgaged  Property is located and specifically  referred to in the
     lender's Title Insurance Policy or attorney's opinion of title and abstract
     of title  delivered to the  originator of such Mortgage  Loan, and (3) such
     other matters to which like  properties are commonly  subject which do not,
     individually or in the aggregate, materially interfere with the benefits of
     the  security  intended  to be  provided  by  the  Mortgage.  Any  security
     agreement,   chattel  mortgage  or  equivalent  document  related  to,  and
     delivered to the Trustee in connection  with, a Mortgage Loan establishes a
     valid,  subsisting  and  enforceable  first lien on the property  described
     therein and the Depositor has full right to sell and assign the same to the
     Trustee;

               (vi)  Immediately  prior to the  transfer and  assignment  of the
     Mortgage  Loans to the  Depositor,  Lehman  Capital  was the sole  owner of
     record and holder of each Mortgage  Loan,  and Lehman  Capital had good and
     marketable  title  thereto,  and has full right to  transfer  and sell each
     Mortgage  Loan to the  Depositor  free and clear,  except as  described  in
     paragraph (v) above, of any encumbrance,  equity,  participation  interest,
     lien, pledge,  charge,  claim or security interest,  and has full right and
     authority,  subject to no interest or participation  of, or agreement with,
     any other party,  to sell and assign each  Mortgage  Loan  pursuant to this
     Agreement;

               (vii)  Each  Mortgage  Loan other  than any  Cooperative  Loan is
     covered by either (i) an attorney's  opinion of title and abstract of title
     the form and substance of which is generally acceptable to mortgage lending
     institutions  originating  mortgage loans in the locality where the related
     Mortgaged  Property is located or (ii) an ALTA  mortgagee  Title  Insurance
     Policy or other generally acceptable form of policy of insurance, issued by
     a title  insurer  qualified  to do business in the  jurisdiction  where the
     Mortgaged  Property is located,  insuring  the  originator  of the Mortgage
     Loan, and its successors and assigns,  as to the first priority lien of the
     Mortgage in the original  principal  amount of the Mortgage  Loan  (subject
     only to the exceptions  described in paragraph (v) above). If the Mortgaged
     Property is a condominium  unit located in a state in which a title insurer
     will  generally  issue an  endorsement,  then the related  Title  Insurance
     Policy contains an endorsement insuring the validity of the creation of the
     condominium  form of  ownership  with  respect to the project in which such
     unit is located. With respect to any Title Insurance Policy, the originator
     is the  sole  insured  of  such  mortgagee  Title  Insurance  Policy,  such
     mortgagee Title Insurance Policy is in full force and effect and will inure
     to the benefit of the Depositor upon the  consummation of the  transactions
     contemplated  by this  Agreement,  no  claims  have been  made  under  such
     mortgagee  Title  Insurance  Policy  and no  prior  holder  of the  related
     Mortgage,  including Lehman Capital, has done, by act or omission, anything
     that would impair the coverage of such mortgagee Title Insurance Policy;

               (viii) To the best of Lehman Capital's knowledge,  no foreclosure
     action is being  threatened or commenced with respect to any Mortgage Loan.
     There is no proceeding pending for the total or partial condemnation of any
     Mortgaged  Property  (or, in the case of a  Cooperative  Loan,  the related
     cooperative  unit) and each such  property  is  undamaged  by waste,  fire,
     earthquake or earth movement,  windstorm, flood, tornado or other casualty,
     so as to  have a  material  adverse  effect  on the  value  of the  related
     Mortgaged Property as security for the related Mortgage Loan or the use for
     which the premises were intended;

               (ix) There are no  mechanics'  or similar  liens or claims  which
     have been filed for work,  labor or material (and no rights are outstanding
     that under the law could give rise to such  liens)  affecting  the  related
     Mortgaged  Property  which  are or may be  liens  prior  to,  or  equal  or
     coordinate with, the lien of the related Mortgage;

               (x) Each  Mortgage  Loan was  originated  by a  savings  and loan
     association,   savings  bank,  commercial  bank,  credit  union,  insurance
     company,  or similar  institution  which is  supervised  and  examined by a
     Federal or State authority,  or by a mortgagee approved by the Secretary of
     Housing  and Urban  Development  pursuant  to  sections  203 and 211 of the
     National Housing Act; and

               (xi) Each  Mortgage  Loan is a  "qualified  mortgage"  within the
     meaning of Section 860G of the Code and Treas. Reg. ss.1.860G-2.

     It is understood  and agreed that the  representations  and  warranties set
forth  herein  survive  delivery of the  Mortgage  Files and the  Assignment  of
Mortgage of each Mortgage Loan to the Depositor. Upon discovery by either Lehman
Capital or the Depositor of a breach of any of the foregoing representations and
warranties  that  adversely  and  materially  affects  the value of the  related
Mortgage Loan, and that does not also constitute a breach of a representation or
warranty of the related  Transferor in the applicable  Transfer  Agreement,  the
party  discovering  such breach  shall give prompt  written  notice to the other
party. Within 60 days of the discovery of any such breach,  Lehman Capital shall
either  (a) cure such  breach in all  material  respects,  (b)  repurchase  such
Mortgage Loan or any property  acquired in respect thereof from the Depositor at
the applicable  Purchase  Price or (c) within the two year period  following the
Closing Date,  substitute a Qualifying Substitute Mortgage Loan for the affected
Mortgage Loan.

     Section 1.05.  Grant Clause.  It is intended that the  conveyance of Lehman
                    ------------
Capital's right,  title and interest in and to Mortgage Loans and other property
conveyed pursuant to this Agreement shall constitute, and shall be construed as,
a sale of such property and not a grant of a security interest to secure a loan.
However, if such conveyance is deemed to be in respect of a loan, it is intended
that:  (1) the  rights  and  obligations  of the  parties  shall be  established
pursuant to the terms of this Agreement; (2) Lehman Capital hereby grants to the
Depositor a first priority  security  interest in all of Lehman Capital's right,
title and  interest in, to and under,  whether now owned or hereafter  acquired,
such Mortgage Loans and other property;  and (3) this Agreement shall constitute
a security agreement under applicable law.

     Section 1.06. Assignment by Depositor.  The Depositor shall have the right,
                   -----------------------
upon notice to but without the consent of Lehman Capital, to assign, in whole or
in part, its interest under this Agreement with respect to the Mortgage Loans to
the Trustee,  and the Trustee then shall  succeed to all rights of the Depositor
under this Agreement. All references to the Depositor in this Agreement shall be
deemed to include its assignee or designee, specifically including the Trustee.

                                  ARTICLE II.

                            MISCELLANEOUS PROVISIONS

     Section 2.01. Binding Nature of Agreement; Assignment. This Agreement shall
                   ---------------------------------------
be  binding  upon and  inure to the  benefit  of the  parties  hereto  and their
respective successors and permitted assigns.

     Section  2.02.  Entire  Agreement.   This  Agreement  contains  the  entire
                     -----------------
agreement and understanding among the parties hereto with respect to the subject
matter  hereof,  and  supersedes  all  prior  and  contemporaneous   agreements,
understandings, inducements and conditions, express or implied, oral or written,
of any nature whatsoever with respect to the subject matter hereof.  The express
terms hereof control and supersede any course of performance and/or usage of the
trade inconsistent with any of the terms hereof.

     Section  2.03.  Amendment.  (a) This  Agreement may be amended from time to
                     ---------
time by Lehman  Capital and the  Depositor,  without notice to or the consent of
any of the  Holders,  (i) to cure any  ambiguity,  (ii) to cause the  provisions
herein to conform to or be consistent  with or in  furtherance of the statements
made with respect to the  Certificates,  the Trust Fund, the Trust  Agreement or
this  Agreement  in any  Offering  Document;  or to  correct or  supplement  any
provision  herein which may be inconsistent  with any other  provisions  herein,
(iii) to make any other provisions with respect to matters or questions  arising
under this  Agreement or (iv) to add,  delete,  or amend any  provisions  to the
extent  necessary or desirable  to comply with any  requirements  imposed by the
Code and the REMIC  Provisions.  No such amendment  effected  pursuant to clause
(iii) of the preceding  sentence shall adversely  affect in any material respect
the interests of any Holder. Any such amendment shall be deemed not to adversely
affect in any  material  respect any Holder,  if the  Trustee  receives  written
confirmation  from each Rating  Agency that such  amendment  will not cause such
Rating  Agency to reduce the then current  rating  assigned to the  Certificates
(and any Opinion of Counsel requested by the Trustee in connection with any such
amendment may rely expressly on such confirmation as the basis therefor).

          (b) This  Agreement  may also be  amended  from time to time by Lehman
Capital  and the  Depositor  with the  consent  of the  Holders of not less than
66-2/3% of the Class  Certificate  Principal Amount (or Percentage  Interest) of
each  Class of  Certificates  affected  thereby  for the  purpose  of adding any
provisions to or changing in any manner or eliminating  any of the provisions of
this  Agreement  or of  modifying  in any  manner  the  rights  of the  Holders;
provided,  however,  that no such  amendment  may (i)  reduce in any  manner the
amount of, or delay the timing of, payments received on Mortgage Loans which are
required to be distributed on any Certificate without, the consent of the Holder
of  such  Certificate  or  (ii)  reduce  the  aforesaid   percentages  of  Class
Certificate  Principal  Amount (or Percentage  Interest) of Certificates of each
Class,  the  Holders of which are  required  to  consent  to any such  amendment
without the consent of the  Holders of 100% of the Class  Certificate  Principal
Amount (or Percentage Interest) of each Class of Certificates  affected thereby.
For purposes of this  paragraph,  references  to "Holder" or "Holders"  shall be
deemed to  include,  in the case of any Class of  Book-Entry  Certificates,  the
related Certificate Owners.

          (c) It shall not be  necessary  for the consent of Holders  under this
Section 2.03 to approve the particular  form of any proposed  amendment,  but it
shall be sufficient if such consent  shall  approve the substance  thereof.  The
manner of obtaining  such consents and of evidencing  the  authorization  of the
execution thereof by Holders shall be subject to such reasonable  regulations as
the Trustee may prescribe.

     Section  2.04.   Governing  Law.  THIS  AGREEMENT  SHALL  BE  CONSTRUED  IN
                      --------------
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, AND THE  OBLIGATIONS,  RIGHTS
AND REMEDIES OF THE PARTIES  HEREUNDER  SHALL BE DETERMINED  IN ACCORDANCE  WITH
SUCH LAWS WITHOUT REGARD TO CONFLICT OF LAWS PRINCIPLES APPLIED IN NEW YORK.

     Section  2.05.  Severability  of  Provisions.  If any  one or  more  of the
                     ----------------------------
covenants,  agreements,  provisions or terms of this Agreement  shall be for any
reason whatsoever held invalid, then such covenants,  agreements,  provisions or
terms  shall be  deemed  severable  from the  remaining  covenants,  agreements,
provisions or terms of this Agreement and shall in no way affect the validity or
enforceability of the other provisions of this Agreement.

     Section 2.06. Indulgences; No Waivers. Neither the failure nor any delay on
                   -----------------------
the part of a party to exercise any right, remedy, power or privilege under this
Agreement  shall  operate as a waiver  thereof,  nor shall any single or partial
exercise of any right,  remedy, power or privilege preclude any other or further
exercise of the same or of any other  right,  remedy,  power or  privilege,  nor
shall any waiver of any right,  remedy,  power or privilege  with respect to any
occurrence  be construed as a waiver of such right,  remedy,  power or privilege
with respect to any other occurrence.  No waiver shall be effective unless it is
in writing and is signed by the party asserted to have granted such waiver.

     Section 2.07. Headings Not to Affect Interpretation. The headings contained
                   -------------------------------------
in this Agreement are for  convenience of reference  only, and they shall not be
used in the interpretation hereof.

     Section 2.08. Benefits of Agreement.  Nothing in this Agreement, express or
                   ---------------------
implied,  shall give to any Person, other than the parties to this Agreement and
their successors hereunder,  any benefit or any legal or equitable right, power,
remedy or claim under this Agreement.

     Section 2.09.  Counterparts.  This Agreement may be executed in one or more
                    ------------
counterparts,  each of which shall be deemed to be an original, and all of which
together shall constitute one and the same instrument.



<PAGE>




     IN WITNESS  WHEREOF,  Lehman  Capital and the  Depositor  have caused their
names to be signed hereto by their respective duly authorized officers as of the
date first above written.



                               LEHMAN CAPITAL, A DIVISION OF
                                 LEHMAN BROTHERS HOLDINGS INC.



                               By:  /s/Joseph J. Kelly           
                                    -----------------------------
                                    Name: Joseph J. Kelly
                                    Title: Authorized Signatory


                               STRUCTURED ASSET SECURITIES
                                 CORPORATION



                               By:  /s/Stanley P. Labanowski      
                                    ------------------------------
                                    Name:  Stanley P. Labanowski
                                    Title: Authorized Signatory


<PAGE>


                                   SCHEDULE A
                                   ----------

                             MORTGAGE LOAN SCHEDULE



                               SERVICING AGREEMENT


     THIS SERVICING AGREEMENT (this "Agreement"), entered into as of the 1st day
of February,  1999, by and between LEHMAN CAPITAL, A DIVISION OF LEHMAN BROTHERS
HOLDINGS  INC.,  a Delaware  corporation  ("Lehman  Capital"),  and AURORA  LOAN
SERVICES INC., a Delaware corporation ("the Servicer"),  recites and provides as
follows:

                                    RECITALS

     WHEREAS,  Lehman Capital has conveyed  certain Mortgage Loans identified on
Schedule I hereto (the "Serviced Mortgage Loans") on a servicing-retained  basis
to Structured Asset Securities Corporation ("SASCO"), which in turn has conveyed
the  Serviced  Mortgage  Loans to The Chase  Manhattan  Bank,  as  trustee  (the
"Trustee")  under a trust  agreement  dated as of  February  1, 1999 (the "Trust
Agreement"),  among the Trustee,  Aurora Loan Services Inc., as master  servicer
("Aurora," and together with any successor Master Servicer appointed pursuant to
the provisions of the Trust Agreement, the "Master Servicer") and SASCO.

     WHEREAS,  Lehman  Capital  continues  to own the  servicing  rights  to the
Serviced  Mortgage Loans,  and may freely  transfer such rights,  subject to the
terms hereof.

     WHEREAS,  Lehman  Capital  desires that the  Servicer  service the Serviced
Mortgage  Loans,  and the Servicer has agreed to do so,  subject to the right of
Lehman Capital to terminate the rights and obligations of the Servicer hereunder
at any time and to the other conditions set forth herein.

     WHEREAS,  Aurora,  acting  as Master  Servicer,  and any  successor  Master
Servicer shall be obligated,  among other things,  to supervise the servicing of
the Serviced Mortgage Loans on behalf of the Trustee,  and shall have the right,
under  certain  circumstances,  to terminate the rights and  obligations  of the
Servicer under this Servicing Agreement.

     NOW, THEREFORE,  in consideration of the mutual agreements  hereinafter set
forth and for other good and valuable consideration, the receipt and adequacy of
which are hereby  acknowledged,  Lehman Capital and the Servicer hereby agree as
follows:

                                    AGREEMENT

     1.  Definitions.  Capitalized terms used and not defined in this Agreement,
         -----------
including  Exhibit A hereto and any provisions of the Flow  Servicing  Agreement
dated as of  September 1, 1997,  between  Lehman  Capital and the Servicer  (the
"Flow Servicing  Agreement")  incorporated by reference  herein,  shall have the
meanings ascribed to such terms in the Trust Agreement.

     2. Servicing.  The Servicer agrees,  with respect to the Serviced  Mortgage
        ---------
Loans, to perform and observe the duties,  responsibilities and obligations that
are to be performed  and observed  under the  provisions  of the Flow  Servicing
Agreement, except as otherwise provided herein and on Exhibit A hereto, and that
the provisions of the Flow Servicing Agreement, as so modified, are and shall be
a part of this Agreement to the same extent as if set forth herein in full.

     3. Master Servicing;  Termination of Servicer. The Servicer,  including any
        ------------------------------------------
successor servicer hereunder,  shall be subject to the supervision of the Master
Servicer,  which Master  Servicer shall be obligated to ensure that the Servicer
services the Serviced  Mortgage Loans in accordance  with the provisions of this
Agreement. The Master Servicer,  acting on behalf of the Trustee pursuant to the
Trust  Agreement,  shall have the same  rights as the "Owner" (as defined in the
Flow Servicing  Agreement) to enforce the  obligations of the Servicer under the
Flow Servicing Agreement.  In addition, all of the representations,  warranties,
covenants,  agreements and indemnities made by the Servicer (or by any successor
servicer) to the "Owner"  under the Flow  Servicing  Agreement are hereby deemed
made to the Master  Servicer as if the Master  Servicer were the "Owner" and all
such representations,  warranties,  covenants,  agreements and indemnities shall
inure  to  the  benefit  of  the  Master  Servicer;   provided,   however,  that
notwithstanding  the foregoing,  the Master  Servicer shall have (i) no right or
interest in the  "Reconstituted  Termination Fee" referred to in Section 7.06 of
the Flow Servicing or the "Additional Remittance" referred to in Section 7.07 of
the Flow Servicing Agreement and (ii) no right to terminate the Servicer, except
as expressly set forth herein. Nothing contained herein is intended to result in
the  creation or  assumption  by the Master  Servicer of any  obligation  of the
"Owner" or any Person under the Flow Servicing  Agreement or any other agreement
or instrument  relating  thereto except as  specifically  set forth herein.  The
Master Servicer shall be entitled to terminate the rights and obligations of the
Servicer under this Agreement upon the failure of the Servicer to perform any of
its  obligations  under this  Agreement,  as  provided in Article IX of the Flow
Servicing Agreement.

     In  addition,  in the event that Lehman  Capital  transfers  the  servicing
rights  in  respect  of the  Serviced  Mortgage  Loans to one or more  successor
servicers, the rights and obligations of the Servicer under this Agreement shall
terminate, at the sole option of Lehman Capital, without cause, upon thirty days
written notice to the Servicer, and each successor servicer shall succeed to the
rights and  obligations  of the Servicer  under this  Agreement as of such date.
Upon such  termination  the  terminated  Servicer  shall not be  entitled to the
Reconstituted  Servicing Fee or any portion  thereof,  or, except as provided in
the Flow  Servicing  Agreement,  to any other amounts in respect of the Serviced
Mortgage Loans.

     The Servicer agrees that,  notwithstanding  anything to the contrary in the
Flow  Servicing  Agreement,  Lehman  Capital is the sole owner of the  servicing
rights relating to the Serviced  Mortgaged Loans, and the Servicer shall have no
right to transfer the servicing thereof.

     4. No  Representations.  Neither the Servicer nor the Master Servicer shall
        -------------------
be obligated or required to make any  representations  and warranties  regarding
the Serviced Mortgage Loans in connection with the transactions  contemplated by
the Trust Agreement and issuance of the certificates issued pursuant thereto.

     5.  Notices.  All notices and  communications  between or among the parties
         -------
hereto  shall be in writing  and shall be deemed  received  or given when mailed
first-class mail, postage prepaid,  addressed to each other party at its address
specified below. Each party may designate to the other parties in writing,  from
time to time,  other  addresses to which  notices and  communications  hereunder
shall be sent.

     6.  Governing  Law.  THIS  SERVICING  AGREEMENT  SHALL BE GOVERNED  BY, AND
         --------------
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, NOTWITHSTANDING
NEW YORK OR OTHER CHOICE OF LAW RULES TO THE CONTRARY.

     7.  Counterparts.   This  Agreement  may  be  executed  in  any  number  of
         ------------
counterparts,  each of which when so executed shall be deemed to be an original,
but all of which  counterparts  shall  together  constitute but one and the same
instrument.

     8.  Reconstitution.  Lehman  Capital  and  the  Servicer  agree  that  this
         --------------
Agreement  is a  Reconstitution  Agreement,  and  that the  date  hereof  is the
Reconstitution Date, each as defined in the Flow Servicing Agreement.

     9. Notices and Remittances to the Master Servicer.  All notices required to
        ----------------------------------------------
be delivered to the Owner or the Master  Servicer under this Agreement  shall be
delivered to the Master Servicer at the following address:

        Aurora Loan Services Inc.
        2530 South Parker Road
        Suite 601
        Aurora, Colorado
        Attn:  Master Servicing Department, SASCO 1999-ALS1

     All  remittances  required  to be made to the  Master  Servicer  under this
Agreement shall be made to the following wire account:

        The Chase Manhattan Bank
        New York, New York
        ABA#:  021-000-021
        Account Name:  Aurora Loan Services Inc. Master Servicing Payment
                       Clearing Account
        Account Number:  066-611059
        Beneficiary:  Aurora Loan Services Inc.
        For further credit to:  SASCO 1999-ALS1

     10. Errors and Omissions Insurance. The Servicer shall keep in force during
         ------------------------------
the term of this Agreement a fidelity bond and a policy or policies of insurance
covering errors and omissions in the  performance of the Servicer's  obligations
under  this  Agreement.  Such  fidelity  bond and  policy or  policies  shall be
maintained  with  recognized  insurers  and shall be in such form and  amount as
would permit the  Servicer to be  qualified as a FNMA or FHLMC  seller-servicer.
The  Servicer  shall be  deemed  to have  complied  with  this  provision  if an
affiliate  of the  Servicer  has such errors and  omissions  and  fidelity  bond
coverage  and,  by the terms of such  insurance  policy or  fidelity  bond,  the
coverage afforded thereunder extends to the Servicer. The Servicer shall furnish
to the Master Servicer a copy of each such bond and insurance  policy if (i) the
Master  Servicer so requests and (ii) the Servicer is not an affiliate of Lehman
Brothers Inc. at the time of such request.

     11. Annual Audit Report. On or before April 30 of each year, beginning with
         -------------------
April 30, 2000,  Servicer shall cause a firm of independent  public  accountants
(who may also  render  other  services  to  Servicer),  which is a member of the
American  Institute of Certified Public  Accountants,  to furnish a statement to
Owner and Master  Servicer,  to the effect that such firm has  examined  certain
documents and records for the  preceding  fiscal year (or during the period from
the date of commencement of such  servicer's  duties  hereunder until the end of
such preceding fiscal year in the case of the first such  certificate) and that,
on the basis of such examination conducted  substantially in compliance with the
Uniform Single  Attestation  Program for Mortgage  Bankers,  such firm is of the
opinion that  Servicer's  overall  servicing  operations  have been conducted in
compliance  with the Uniform  Single  Attestation  Program for Mortgage  Bankers
except for such exceptions that, in the opinion of such firm, the Uniform Single
Attestation  Program for Mortgage Bankers  requires it to report,  in which case
such exceptions shall be set forth in such statement.

     12.  Annual  Officer's  Certificate.  On or before  April 30 of each  year,
          ------------------------------
beginning with April 30, 2000, the Servicer, at its own expense, will deliver to
the Owner and Master Servicer a Servicing Officer's  certificate  stating, as to
each signer thereof,  that (i) a review of the activities of the Servicer during
such preceding fiscal year and of performance under this Agreement has been made
under  such  officers'  supervision,  and  (ii) to the  best  of such  officers'
knowledge,  based on such review, the Servicer has fulfilled all its obligations
under  this  Agreement  for such  year,  or, if there has been a default  in the
fulfillment of all such obligations,  specifying each such default known to such
officers and the nature and status  thereof  including  the steps being taken by
the Servicer to remedy such default.



<PAGE>



     Executed as of the day and year first above written.

                          LEHMAN CAPITAL, A DIVISION OF
                            LEHMAN BROTHERS HOLDINGS INC.



                          By:  /s/Joseph J. Kelly            
                               ------------------------------
                               Name: Joseph J. Kelly
                               Title: Authorized Signatory


                          AURORA LOAN SERVICES INC.



                          By:  /s/Leo C. Trautman, Jr.       
                               ------------------------------
                               Name:  Leo C. Trautman, Jr.
                               Title:  Executive Vice President



<PAGE>



                                    EXHIBIT A

                  Modifications to the Flow Servicing Agreement


1.   The following is hereby added  immediately  following the words "incidental
     fees and charges" in the definition of "Ancillary  Income" in Article I: ",
     but not  including any premium or penalty  associated  with a prepayment of
     principal of a Mortgage Loan."

2.   The definition of "Custodial  Agreement" in Article I is hereby deleted and
     replaced with the following:

          "The custodial agreements relating to custody of the Serviced Mortgage
     Loans among: (i) LaSalle  National Bank, as Custodian,  The Chase Manhattan
     Bank, as Trustee, and Structured Asset Securities Corporation and (ii) U.S.
     Bank Trust National Association, as Custodian, The Chase Manhattan Bank, as
     Trustee,  and Structured  Asset  Securities  Corporation,  each dated as of
     February 1, 1999."

3.   The  definition of  "Custodian" in Article I is hereby deleted and replaced
     with the following:

          "Either of LaSalle National Bank, as Custodian pursuant to a Custodial
     Agreement,   and  any  successor  thereto,  or  U.S.  Bank  Trust  National
     Association,  as  Custodian  pursuant  to a  Custodial  Agreement,  and any
     successor thereto, as applicable."

4.   The following definition is hereby added:

          "MERS  Eligible  Mortgage  Loan:  Any  Mortgage  Loan  that  has  been
           ------------------------------
     designated by the Servicer as recordable in the name of MERS."

5.   The  definition  of  "Monthly  Advance"  in Article I is hereby  amended by
     adding  at the end of such  definition  the  following:  ", but only to the
     extent  that such amount is  expected,  in the  reasonable  judgment of the
     Servicer, to be recoverable from collections or other recoveries in respect
     of such Mortgage Loan."

6.   The following definition is hereby added:

          "Non-MERS  Eligible Mortgage Loan: Any Mortgage Loan other than a MERS
           --------------------------------
     Eligible Mortgage Loan."

7.   The following definition is hereby added:

          "Prepayment  Interest  Excess  Amount:  With respect to any  Principal
           ------------------------------------
     Prepayment  in full of a Mortgage  Loan received from the first day through
     the  sixteenth  day of any calendar  month,  all amounts paid in respect of
     interest on such Principal Prepayment."

8.   The definition of "Prepayment  Interest Shortfall Amount" is hereby deleted
     and replaced with the following:

          "Prepayment  Interest  Shortfall  Amount:  With  respect  to  (x)  any
           ---------------------------------------
     Principal  Prepayment in part (other than any such  prepayment  received on
     the first of the month) and (y) any  Principal  Prepayment in full received
     on or after the  seventeenth  day of the month  preceding the month of such
     Distribution Date, but on or before the last day of the month preceding the
     month  of such  Distribution  Date,  the  difference  between  (i) one full
     month's  interest at the  applicable  Mortgage  Rate (giving  effect to any
     applicable Relief Act Reduction), as reduced by the Reconstituted Servicing
     Fee, on the outstanding principal balance of such Mortgage Loan immediately
     prior to such prepayment and (ii) the amount of interest  actually received
     with  respect  to such  Mortgage  Loan in  connection  with such  Principal
     Prepayment."

9.   The following definition is hereby added:

          "Prepayment  Period:  With  respect  to any  Distribution  Date  and a
           ------------------
     partial Principal  Prepayment,  the period from the second day of the month
     preceding the month of such Distribution Date to the first day of the month
     of such Distribution Date. With respect to any Distribution Date and a full
     Principal  Prepayment,  the period  from the  seventeenth  day of the month
     preceding the month of such  Distribution  Date to the sixteenth day of the
     month of such Distribution Date."

10.  The definition of "Qualified Depository" in Article I is hereby deleted and
     replaced with the following:

          "Any of (i) a depository the accounts of which are insured by the FDIC
     and the debt  obligations of which are rated AA or better by Fitch and S&P;
     (ii) the corporate  trust  department of any bank the debt  obligations  of
     which are rated at least A-1 or its equivalent by each of Fitch and S&P; or
     (iii) the Servicer,  unless the Master Servicer is notified by either Fitch
     or S&P that the designation of the Servicer as a Qualified  Depository will
     result in a  qualification,  withdrawal  or downgrade  of the  then-current
     rating of any of the Certificates."

11.  The following definition is hereby added:

          "Reconstituted  Servicing Fee: An amount equal to (1)  one-twelfth the
           ----------------------------
     product  of (a) a rate per  annum  equal to 0.30%  and (b) the  outstanding
     principal  balance of such  Mortgage Loan and (2) any  Prepayment  Interest
     Excess  Amounts.   The  obligation  of  the  Master  Servicer  to  pay  the
     Reconstituted  Servicing Fee is limited to, and the Reconstituted Servicing
     Fee is payable solely from, the interest portion (including recoveries with
     respect to interest from  Liquidation  Proceeds to the extent  permitted by
     Section 3.02 of this  Agreement) of such Monthly  Payment  collected by the
     Servicer, or as otherwise provided under this Agreement."

12.  The  definition  of  "Remittance  Date" in Article I is hereby  deleted and
     replaced with the following:

          "The 18th day (or if such 18th day is not a  Business  Day,  the first
     Business  Day  immediately  preceding)  of any month,  following  the First
     Remittance Date."

13.  The definition of "Servicing Fee" in Article I is hereby deleted.

14.  Section 2.02 is hereby deleted and replaced with the following paragraphs:

          "Section 2.02 Books and Records.
                        -----------------

          (a) Subject to Section  3.01(a) hereof,  as soon as practicable  after
     the Closing  Date (but in no event more than 90 days  thereafter  except to
     the extent  delays  are caused by the  applicable  recording  office),  the
     Servicer, at the expense of the Depositor,  shall cause the Mortgage,  with
     respect to each MERS Eligible Mortgage Loan, to be properly recorded in the
     name of MERS in the public recording office in the applicable jurisdiction,
     or shall ascertain that such have previously been so recorded.

          (b)  Record  title to each  Non-MERS  Eligible  Mortgage  Loan and the
     related  Mortgage  Note  shall be in the name of the  Trustee.  Subject  to
     Section  3.01(a)  hereof,  Assignments  of Mortgage shall be recorded as to
     each  Non-MERS  Mortgage  Loan  unless  instructions  to the  contrary  are
     delivered  to the  Servicer,  in writing,  by the  Trustee.  Subject to the
     preceding  sentence,  as soon as practicable after the Closing Date (but in
     no event  more than 90 days  thereafter  except to the  extent  delays  are
     caused by the applicable recording office), the Servicer, at the expense of
     the Depositor, shall cause to be properly recorded in each public recording
     office  where such  Non-MERS  Eligible  Mortgage  Loans are  recorded  each
     Assignment  of  Mortgage.  Additionally,  the  Servicer  shall  prepare and
     execute, at the direction of the Trustee, any note endorsements.

          (c) All rights  arising out of the  Mortgage  Loans shall be vested in
     the Trustee.  All funds  received on or in connection  with a Mortgage Loan
     shall be received  and held by the Servicer in trust for the benefit of the
     Trustee pursuant to the terms of this Agreement."

15.  Section   3.01(a)  is  hereby  deleted  and  replaced  with  the  following
     paragraph:

          "(a) The  Servicer  shall  (A)  record  or cause  to be  recorded  the
     Mortgage,  with respect to all MERS Eligible Mortgage Loans, in the name of
     MERS, or shall ascertain that such have  previously  been so recorded;  (B)
     prepare or cause to be prepared all Assignments of Mortgage with respect to
     all Non-MERS  Eligible  Mortgage Loans; (C) record or cause to be recorded,
     subject to Section 2.02(b) hereof, all Assignments of Mortgage with respect
     to  Non-MERS  Mortgage  Loans  in the  name  of the  Trustee;  (D)  pay the
     recording  costs  pursuant to Section  2.02  hereof;  and/or (E) track such
     Assignments  of  Mortgage  to ensure  they have  been  recorded.  After the
     expenses of such recording costs pursuant to Section 2.02 hereof shall have
     been paid by the  Servicer,  the Servicer  shall submit to the  Depositor a
     reasonably  detailed  invoice  for  reimbursement  of  recording  costs  it
     incurred hereunder."

16.  The fourth and fifth  paragraphs  of Section  3.01 are hereby  deleted  and
     replaced with the following paragraph:

          "Consistent  with the terms of this Agreement,  the Servicer may waive
     any late payment charge,  assumption fee or other fee that may be collected
     in the ordinary course of servicing the Mortgage Loans.  The Servicer shall
     not make any future  advances to any obligor under any Mortgage  Loan,  and
     (unless the  Mortgagor is in default  with respect to the Mortgage  Loan or
     such default is, in the judgment of the Servicer,  reasonably  foreseeable)
     the Servicer shall not permit any  modification of any material term of any
     Mortgage Loan,  including any  modification  that would change the Mortgage
     Interest  Rate,  defer or forgive the  payment of  principal  or  interest,
     reduce or increase the  outstanding  principal  balance  (except for actual
     payments of principal)  or change the final  maturity date on such Mortgage
     Loan. In the event of any such  modification  which permits the deferral of
     interest or principal payments on any Mortgage Loan, the Servicer shall, on
     the Business Day immediately  preceding the Remittance Date in any month in
     which any such  principal  or interest  payment has been  deferred,  make a
     Monthly  Advance in accordance with Section 4.03, in an amount equal to the
     difference  between (a) such month's  principal and one month's interest at
     the Remittance Rate on the unpaid  principal  balance of such Mortgage Loan
     and (b) the amount paid by the Mortgagor. The Servicer shall be entitled to
     reimbursement  for  such  advances  to the  same  extent  as for all  other
     advances made pursuant to Section 4.03.  Without limiting the generality of
     the foregoing,  the Servicer shall continue,  and is hereby  authorized and
     empowered,  to  execute  and  deliver  on behalf of itself  and the  Master
     Servicer, all instruments of satisfaction or cancellation, or of partial or
     full release, discharge and all other comparable instruments,  with respect
     to the Mortgage  Loans and with respect to the Mortgaged  Properties.  Upon
     the request of the Servicer,  the Master Servicer shall execute and deliver
     to the Servicer any powers of attorney and other documents, furnished to it
     by  the  Servicer  and  reasonably  satisfactory  to the  Master  Servicer,
     necessary or  appropriate to enable the Servicer to carry out its servicing
     and administrative duties under this Agreement.

          Notwithstanding  anything  to the  contrary  in  this  Agreement,  the
     Servicer  shall not waive any  premium  or  penalty  in  connection  with a
     prepayment of principal of any Mortgage  Loan, and shall not consent to the
     modification  of any  Mortgage  Note to the extent  that such  modification
     relates to payment of a prepayment premium or penalty."

17.  The words "Lehman  Capital,  A Division of Lehman  Brothers  Holdings Inc.,
     owner of  residential  Mortgage  Loans,  Group No.  1997-ALSI,  and various
     Mortgagors"  in the first  paragraph of Section 3.03 are hereby deleted and
     replaced with the following: "Aurora Loan Services Inc., as master servicer
     for SASCO 1999-ALS1."

18.  Section  3.04 is  amended by  deleting  the word "and" at the end of clause
     (v),  replacing  the  period at the end of clause  (vi) with ";  and",  and
     adding the following immediately following clauses (vii) and (viii):

          "(vii) to  reimburse  itself for Monthly  Advances  of the  Servicer's
     funds made pursuant to Section 7.03, it being  understood that, in the case
     of any such  reimbursement,  the Servicer's right thereto shall be prior to
     the rights of the Trust Fund;

          (viii) to reimburse itself for unreimbursed  Servicing  Advances,  and
     for any  unpaid  Reconstituted  Servicing  Fees,  the  Servicer's  right to
     reimburse  itself  pursuant to this  subclause  (viii) with  respect to any
     Mortgage Loan being limited to related Liquidation  Proceeds,  Condemnation
     Proceeds,  Insurance Proceeds,  REO Disposition  Proceeds and other amounts
     received in respect of the related REO Property,  and such other amounts as
     may be collected by the Servicer from the  Mortgagor or otherwise  relating
     to the Mortgage  Loan,  it being  understood  that, in the case of any such
     reimbursement, the Servicer's right thereto shall be prior to the rights of
     the Purchaser;"

19.  The words "Lehman  Capital,  A Division of Lehman  Brothers  Holdings Inc.,
     owner of  residential  Mortgage  Loans,  Group No.  1997-ALSI,  and various
     Mortgagors"  in the first  paragraph of Section 3.05 are hereby deleted and
     replaced with the following: "Aurora Loan Services Inc., as master servicer
     for SASCO 1999-ALS1."

20.  All references in Section 3.11 to the disposition of REO Properties  within
     a two year period are hereby deleted and replaced with a three year period.

21.  The following Section 3.13 is hereby added:

          "Section 3.13 MERS.
                        ----

          (a) The Servicer shall take such actions as are necessary to cause the
     Trustee to be clearly identified as the owner of each MERS Mortgage Loan on
     the records of MERS for  purposes of the system of  recording  transfers of
     beneficial ownership of mortgages maintained by MERS.

          (b) The Servicer  shall  maintain in good  standing its  membership in
     MERS. In addition,  the Servicer shall comply with all rules,  policies and
     procedures of MERS, including the Rules of Membership,  as amended, and the
     MERS Procedures Manual, as amended.

          (c) With respect to all MERS Mortgage  Loans serviced  hereunder,  the
     Servicer  shall  promptly  notify  MERS as to any  transfer  of  beneficial
     ownership or release of any security interest in such Mortgage Loans.

          (d) With respect to all MERS Mortgage  Loans serviced  hereunder,  the
     Servicer  shall  notify MERS as to any  transfer of  servicing  pursuant to
     Section 10.01 within 10 Business  Days of such  transfer of servicing.  The
     Servicer  shall  cooperate  with the Trustee,  the Master  Servicer and any
     successor  servicer to the extent necessary to ensure that such transfer of
     servicing is appropriately reflected on the MERS system."

22.  The first paragraph of Section 4.01 is hereby deleted and replaced with the
     following:

          "On each  Remittance Date the Servicer shall remit by wire transfer of
     immediately  available  funds  to  the  Master  Servicer  (a)  all  amounts
     deposited in the Custodial  Account as of the close of business on the last
     day of the related Due Period (net of charges  against or withdrawals  from
     the Custodial Account pursuant to Section 3.04),  plus (b) all amounts,  if
     any,  which the  Servicer is obligated  to  distribute  pursuant to Section
     7.03,  minus  (c)  any  amounts  attributable  to  Principal   Prepayments,
     Liquidation  Proceeds,  Insurance  Proceeds,  Condemnation  Proceeds or REO
     Disposition Proceeds received after the applicable Prepayment Period, which
     amounts shall be remitted on the following  Remittance Date,  together with
     any additional  interest  required to be deposited in the Custodial Account
     in connection  with such  Principal  Prepayment in accordance  with Section
     7.03, and minus (d) any amounts  attributable to Monthly Payments collected
     but due on a due date or dates  subsequent to the first day of the month in
     which such Remittance  Date occurs,  which amounts shall be remitted on the
     Remittance Date next succeeding the Due Period for such amounts."

23.  Section 4.02 is hereby amended by deleting the words  "Remittance  Date" in
     the first line of such Section,  and substituting the following:  "eleventh
     Business Day of each month"

24.  The third paragraph of Section 5.01 is hereby deleted.

25.  Section 5.02 is hereby deleted.

26.  All  references  to the  "Servicing  Fee"  (other  than the  definition  of
     "Servicing   Fee"  in   Article   I)  shall  be  deemed  to  refer  to  the
     "Reconstituted Servicing Fee" pursuant to Section 7.03.

27.  The following paragraph is added at the end of Section 10.01:

          "Neither the Master Servicer nor any successor servicer (including the
     Owner and the Master Servicer) shall be liable for any acts or omissions of
     the Servicer or any predecessor servicer. In particular, neither the Master
     Servicer nor any  successor  servicer  (including  the Owner and the Master
     Servicer)  shall  be  liable  for any  servicing  errors  or  interruptions
     resulting  from any failure of the Servicer to maintain  computer and other
     information systems that are year-2000 compliant."

28.  The  following  words are hereby  added  after the words  "Attention:  Rick
     Skogg" in Section 10.06(ii):

          "with a copy to:

          Aurora Loan Services Inc.
          601 Fifth Avenue
          P.O. Box 1706
          Scottsbluff, Nebraska  69361
          Telephone No.:  (308) 635-3500
          Telecopier No.:  (308) 632-4287

          Attention:  Leo C. Trautman, Jr."


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