IMPAC SECURED ASSETS CORP
8-K, 1998-10-13
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 Exchange Act of 1934


Date of Report (Date of earliest event reported) September 23, 1998 IMPAC
SECURED ASSETS CORP. (as company under a Pooling and Servicing Agreement, dated
as of September 1, 1998, providing for, inter alia, the issuance of Mortgage
Pass-Through Certificates, Series 1998-3)


                           Impac Secured Assets Corp.
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

         CALIFORNIA                 333-44209              33-071-5871
         ----------                 ---------              -----------
(State or Other Jurisdiction        (Commission            (I.R.S. Employer
of Incorporation)                   File Number)           Identification No.)


20371 Irvine Avenue
Santa Ana Heights, California                                 92707
- -----------------------------                                 -----
                                                            (Zip Code)


Registrant's telephone number, including area code, is (714) 556-0122



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

<PAGE>

Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits.
         -------------------------------------------------------------------

                  (a)      Not applicable

                  (b)      Not applicable

                  (c)      Exhibits:

                  1. Pooling and Servicing Agreement, dated as of September 1,
1998, among Impac Secured Assets Corp., as company, PNC Mortgage Securities
Corp., as master servicer, and Bankers Trust Company of California, N.A., as
trustee.



<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 thereunto duly authorized.

                           IMPAC SECURED ASSETS CORP.


                           By:     /s/ Richard Johnson
                                   ----------------------------------------
                           Name:   Richard Johnson
                           Title:  Chief Financial Officer and Secretary


Dated: October 13, 1998


<PAGE>


                                     EXHIBIT


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





                          IMPAC SECURED ASSETS CORP.,
                                   Depositor,


                          PNC MORTGAGE SECURITIES CORP.
                                Master Servicer,


                                       and


                    BANKERS TRUST COMPANY OF CALIFORNIA, N.A.
                                     Trustee




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


                         POOLING AND SERVICING AGREEMENT

                          Dated as of September 1, 1998

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


                       Mortgage Pass-Through Certificates

                                  Series 1998-3



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


<PAGE>




                                TABLE OF CONTENTS
                                -----------------
 

ARTICLE I

DEFINITIONS...............................................................     2
1.01.  Defined Terms ......................................................    2
Accrued Certificate Interest ..............................................    2
Advance ...................................................................    3
Agreement .................................................................    3
Anniversary ...............................................................    3
Assignment ................................................................    3
Available Distribution Amount .............................................    3
Bankruptcy Amount .........................................................    3
Bankruptcy Code ...........................................................    4
Bankruptcy Loss ...........................................................    4
Book-Entry Certificate ....................................................    4
Business Day ..............................................................    4
Cash Liquidation ..........................................................    4
Certificate ...............................................................    4
Certificate Account .......................................................    4
Certificate Account Deposit Date ..........................................    4
Certificateholder" or "Holder .............................................    4
Certificate Owner .........................................................    5
Certificate Principal Balance .............................................    5
Certificate Register ......................................................    6
Class .....................................................................    6
Class A Certificate .......................................................    6
Class B Percentage ........................................................    6
Class B-1 Certificate .....................................................    6
Class B-1 Percentage ......................................................    6
Class B-1 Prepayment Distribution Trigger .................................    7
Class B-2 Certificate .....................................................    7
Class B-2 Percentage ......................................................    7
Class B-2 Prepayment Distribution Trigger .................................    7
Class B-3 Certificate .....................................................    7
Class B-3 Percentage ......................................................    7
Class B-3 Prepayment Distribution Trigger .................................    8
Class M Certificate .......................................................    8
Class M Percentage ........................................................    8
Class M-1 Percentage ......................................................    8
Class M-2 Percentage ......................................................    8
Class M-2 Prepayment Distribution Trigger .................................    8
Class M-3 Percentage ......................................................    8



                                       i




<PAGE>

                                                                            Page
                                                                            ----

Class M-3 Prepayment Distribution Trigger .................................    9
Closing Date ..............................................................    9
CMAC ......................................................................    9
CMAC Insured Loans ........................................................    9
CMAC PMI Policies .........................................................    9
CMAC PMI Policy Rate ......................................................    9
Code ......................................................................    9
Collateral Value ..........................................................    9
Commission ................................................................    9
Compensating Interest .....................................................    9
Corporate Trust Office ....................................................   10
Curtailment ...............................................................   10
Custodial Account .........................................................   10
Cut-off Date ..............................................................   10
Debt Service Reduction ....................................................   10
Defaulted Mortgage Loan ...................................................   10
Defaulted Mortgage Loss ...................................................   10
Deficient Valuation .......................................................   10
Definitive Certificate ....................................................   11
Deleted Mortgage Loan .....................................................   11
Depositor .................................................................   11
Depository ................................................................   11
Depository Participant ....................................................   11
Determination Date ........................................................   11
Disqualified Organization .................................................   11
Distribution Date .........................................................   12
Due Date ..................................................................   12
Due Period ................................................................   12
Eligible Account ..........................................................   12
Event of Default ..........................................................   12
Excess Bankruptcy Loss ....................................................   13
Excess Fraud Loss .........................................................   13
Excess Proceeds ...........................................................   13
Excess Servicing Strip ....................................................   13
Excess Servicing Strip Holder .............................................   13
Excess Special Hazard Loss ................................................   13
Extraordinary Events ......................................................   13
Extraordinary Losses ......................................................   14
FDIC ......................................................................   14
Final Disposition .........................................................   14
FHLMC .....................................................................   14
FNMA ......................................................................   14
Fraud Loss Amount .........................................................   14
Fraud Losses ..............................................................   15


                                       ii
<PAGE>
                                                                            Page
                                                                            ----
Funding Date ..............................................................   15
Initial Certificate Principal Balance .....................................   15
Initial Notional Amount ...................................................   15
Insurance Policy ..........................................................   15
Insurance Proceeds ........................................................   15
Late Collections ..........................................................   15
Liquidation Proceeds ......................................................   15
Loan-to-Value Ratio .......................................................   16
Lost Note Affidavit .......................................................   16
Master Servicer ...........................................................   16
Servicing Fees ............................................................   16
Servicing Fee Rate ........................................................   16
Maturity Date .............................................................   16
Monthly Payment ...........................................................   16
Moody's ...................................................................   16
Mortgage ..................................................................   17
Mortgage File .............................................................   17
Mortgage Loan .............................................................   17
Mortgage Loan Accrued Interest ............................................   17
Mortgage Loan Purchase Agreement ..........................................   17
Mortgage Loan Schedule ....................................................   17
Mortgage Note .............................................................   18
Mortgage Rate .............................................................   18
Mortgaged Property ........................................................   19
Mortgagor .................................................................   19
Net Mortgage Rate .........................................................   19
Nonrecoverable Advance ....................................................   19
Non-United States Person ..................................................   19
Notional Amount ...........................................................   19
Officers' Certificate .....................................................   19
Opinion of Counsel ........................................................   19
Original Senior Percentage ................................................   20
OTS .......................................................................   20
Outstanding Mortgage Loan .................................................   20
Ownership Interest ........................................................   20
Pass-Through Rate .........................................................   20
Percentage Interest .......................................................   21
Permitted Investment ......................................................   21
Permitted Transferee ......................................................   22
Person ....................................................................   22
Pool Strip Rate ...........................................................   22
Prepayment Distribution Percentage ........................................   23
Prepayment Distribution Trigger ...........................................   24
Prepayment Interest Shortfall .............................................   24

                                       iii
<PAGE>

                                                                            Page
                                                                            ----
Prepayment Period .........................................................   24
Primary Hazard Insurance Policy ...........................................   24
Primary Insurance Policy ..................................................   25
Principal Prepayment ......................................................   25
Principal Prepayment in Full ..............................................   25
Purchase Price ............................................................   25
Qualified Insurer .........................................................   25
Qualified Substitute Mortgage Loan ........................................   25
Rating Agency .............................................................   26
Realized Loss .............................................................   26
Record Date ...............................................................   27
Regular Certificate .......................................................   27
Relief Act ................................................................   27
REMIC .....................................................................   27
REMIC Provisions ..........................................................   27
Remittance Report..........................................................   27
REO Acquisition ...........................................................   27
REO Disposition ...........................................................   27
REO Imputed Interest ......................................................   27
REO Proceeds ..............................................................   27
REO Property ..............................................................   28
Request for Release .......................................................   28
Residual Certificate ......................................................   28
Responsible Officer .......................................................   28
Seller ....................................................................   28
Senior Accelerated Distribution Percentage ................................   28
Senior Interest Distribution Amount........................................   29
Senior Percentage..........................................................   29
Senior Principal Distribution Amount ......................................   30
Servicing Account..........................................................   30
Servicing Advances ........................................................   30
Servicing Fees ............................................................   30
Servicing Fee Rate ........................................................   30
Servicing Officer .........................................................   30
Single Certificate ........................................................   30
Special Hazard Amount .....................................................   30
Special Hazard Loss .......................................................   31
Special Hazard Percentage .................................................   31
Standard & Poor's .........................................................   32
Startup Day ...............................................................   32
Stated Principal Balance ..................................................   32
Subordinate Certificate ...................................................   32
Subordinate Percentage ....................................................   32
Subordinate Principal Distribution Amount .................................   32

                                       iv

<PAGE>
                                                                            Page
                                                                            ----
Sub-Servicer ..............................................................   33
Sub-Servicer Remittance Date ..............................................   33
Sub-Servicing Account .....................................................   33
Sub-Servicing Agreement ...................................................   33
Tax Returns ...............................................................   33
Transfer ..................................................................   33
Transferor ................................................................   33
Trustee ...................................................................   33
Trustee's Fee .............................................................   33
Trustee Fee Rate ..........................................................   33
Uninsured Cause ...........................................................   34
United States Person ......................................................   34
Variable Strip Certificates ...............................................   34
Voting Rights .............................................................   34

ARTICLE II

<TABLE>
<CAPTION>

<S>                                                                                                <C>
CONVEYANCE OF MORTGAGE LOANS;ORIGINAL ISSUANCE OF CERTIFICATES..................................   35
2.01    Conveyance of Mortgage Loans............................................................   35
2.02    Acceptance of the Trust Fund by the Trustee.............................................   38
2.03    Representations, Warranties and Covenants of the Master Servicer and the Depositor......   39
2.04    Representations and Warranties of the Seller............................................   41
2.05    Issuance of Certificates Evidencing Interests in the Trust Fund.........................   43
</TABLE>

<TABLE>
<CAPTION>
ARTICLE III

<S>                                                                                                <C>
ADMINISTRATION AND SERVICINGOF THE TRUST FUND..................................................    44

3.01    Master Servicer to Act as Master Servicer ..............................................   44
3.02    Sub-Servicing Agreements Between Master Servicer and Sub-Servicers .....................   45
3.03    Successor Sub-Servicers ................................................................   46
3.04    Liability of the Master Servicer .......................................................   46
3.05    No Contractual Relationship Between Sub-Servicers and Trustee or Certificateholders ....   47
3.06    Assumption or Termination of Sub-Servicing Agreements by Trustee .......................   47
3.07    Collection of Certain Mortgage Loan Payments ...........................................   48
3.08    Sub-Servicing Accounts .................................................................   49
3.09    Collection of Taxes, Assessments and Similar Items; Servicing Accounts .................   50
3.10    Custodial Account ......................................................................   50 
3.11    Permitted Withdrawals From the Custodial Account .......................................   51
3.12    Permitted Investments ..................................................................   52
3.13    Maintenance of Primary Hazard Insurance ................................................   53


</TABLE>
                                       v

<PAGE>

<TABLE>
<CAPTION>
                                                                                                 Page
                                                                                                 ----
<S>                                                                                                <C>
3.14    Enforcement of Due-on-Sale Clauses; Assumption Agreements ..............................   55
3.15    Realization Upon Defaulted Mortgage Loans ..............................................   56
3.16    Trustee to Cooperate; Release of Mortgage Files ........................................   57
3.17    Servicing Compensation .................................................................   58
3.18    Maintenance of Certain Servicing Policies ..............................................   59
3.19    Annual Statement as to Compliance ......................................................   59
3.20    Annual Independent Public Accountants' Servicing Statement .............................   60
3.21    Access to Certain Documentation ........................................................   61
3.22    Title, Conservation and Disposition of REO Property ....................................   61
3.23    Additional Obligations of the Master Servicer ..........................................   63
3.24    Optional Purchase of Defaulted Mortgage Loans ..........................................   64
3.25    Additional Obligations of the Depositor ................................................   64
3.26    Periodic Filings with the Securities and Exchange Commission; Additional Information....   64
3.27    The Excess Servicing Strip .............................................................   65
</TABLE>

ARTICLE IV

PAYMENTS TO CERTIFICATEHOLDERS ............................................   66
4.01    Certificate Account; Distributions ................................   66
4.02    Statements to Certificateholders ..................................   72
4.03    Remittance Reports; Advances by the Master Servicer ...............   74
4.04    Allocation of Realized Losses .....................................   76
4.05    Information Reports to Be Filed by the Master Servicer ............   77
4.06    Compliance with Withholding Requirements ..........................   77

ARTICLE V

THE CERTIFICATES ..........................................................   78
5.01. The Certificates ....................................................   78
5.02. Registration of Transfer and Exchange of Certificates ...............   79
5.03. Mutilated, Destroyed, Lost or Stolen Certificates ...................   84
5.04. Persons Deemed Owners ...............................................   85

ARTICLE VI

THE DEPOSITOR AND THE MASTER SERVICER .....................................   86
6.01. Liability of the Depositor and the Master Servicer...................   86
6.02. Merger, Consolidation or Conversion of the Depositor
      or the Master sevicer ...............................................   86
6.03. Limitation on Liability of the Depositor, the Master Servicer 
      and Others .............................................................86
6.04. Limitation on Resignation of the Master Servicer .......................87
6.05. Sale and Assignment of Master Servicing ................................87


  
                                     vi
<PAGE>
                                                                            Page
                                                                            ----

ARTICLE VII

         DEFAULT............................................................. 89
         7.01. Events of Default............................................. 89
         7.02. Trustee to Act; Appointment of Successor ..................... 91
         7.03. Notificatification Certificateholders ........................ 92
         7.04. Waiver of Events of Default .................................. 92
         7.05. List of Certificateholders.................................... 92

ARTICLE VIII

         CONCERNING THE TRUSTEE ............................................. 93
         8.01.    Duties of Trustee ......................................... 93
         8.02.    Certain Matters Affecting the Trustee ..................... 94
         8.03.    Trustee Not Liable for Certificates or Mortgage Loans ..... 95
         8.04.    Trustee May Own Certificates .............................. 96
         8.05.    Trustee's Fees ............................................ 96
         8.06.    Eligibility Requirements for Trustee....................... 97
         8.07.    Resignation and Removal of the Trustee..................... 97
         8.08.    Successor Trustee ......................................... 98
         8.09.    Merger or Consolidation of Trustee ........................ 98
         8.10.    Appointment of Co-Trustee or Separate Trustee ............. 99

ARTICLE IX

         TERMINATION ....................................................... 101
         9.01.    Termination Upon Repurchase or Liquidation of All 
                  Mortgage Loans or upon Purchachase Certificates .......... 101

ARTICLE X
         REMIC PROVISIONS................................................... 106
         10.01.   REMIC Administration ..................................... 106
         10.02.   Prohibited Transactions and Activities.................... 109
         10.03.   Master Servicer and Trustee Indemnification .............. 109

ARTICLE XI
         MISCELLANEOUS PROVISIONS .......................................... 110
         11.01.   Amendment ................................................ 110
         11.02.   Recordation of Agreement; Counterparts.................... 111
         11.03.   Limitation on Rights of Certificateholders ............... 112
         11.04.   Governing Law ............................................ 113
         11.05.   Notices................................................... 113


                                      vii



<PAGE>


                                                                            Page
                                                                            ----


11.06.   Severability of Provisions......................................... 113
11.07.   Successors and Assigns; Third Party Beneficiary ................... 113
11.08.   Article and Section Headings  ..................................... 114
11.09.   Notice to Rating Agencies ......................................... 114


Signatures
Acknowledgments

Exhibit A    Form of Class A Certificate
Exhibit B-1  Form of Class B Certificate
Exhibit B-2  Form of Class M Certificate
Exhibit B-3  Form of Class R Certificate
Exhibit C    Form of Trustee Initial Certification
Exhibit D    Form of Trustee Final Certification
Exhibit E    Form of Remittance Report
Exhibit F-1  Request for Release
Exhibit F-2  Request for Release for Mortgage Loans Paid in Full
Exhibit G-1  Form of Investor Representation Letter
Exhibit G-2  Form of Transferor Representation Letter
Exhibit G-3  Form of Rule 144A Investment Representation
Exhibit G-4  Transferor Certificate for Transfers of Residual Certificates
Exhibit G-5  Transfer Affidavit and Agreement for Transfers of 
             Residual Certificates
Exhibit G-6  Form of Investor Representation Letter for Insurance Companies
Exhibit H    Mortgage Loan Schedule
Exhibit I    Seller Representations and Warranties
Exhibit J    Form of Notice Under Section 3.24
Exhibit K    Schedule of Percentage Interests in Certificates Sold






                                      viii
<PAGE>


                  This Pooling and Servicing Agreement, dated and effective as
of September 1, 1998, among Impac Secured Assets Corp., as depositor (the
"Depositor"), PNC Mortgage Securities Corp., as master servicer (the "Master
Servicer"), and Bankers Trust Company of California, N.A., as trustee (the
"Trustee").

                             PRELIMINARY STATEMENT:

              The Depositor intends to sell mortgage pass-through certificates
(collectively, the "Certificates"), to be issued hereunder in multiple classes,
which in the aggregate will evidence the entire beneficial ownership interest in
the Mortgage Loans (as defined herein). As provided herein, the Trustee will
make an election to treat the entire segregated pool of assets described in the
definition of Trust Fund (as defined herein), and subject to this Agreement
(including the Mortgage Loans), as a real estate mortgage investment conduit (a
"REMIC") for federal income tax purposes. The Class A-1, Class A-2, Class A-3,
Class M-1, Class M-2, Class M-3, Class B-1, Class B-2 and Class B-3 Certificates
and the Excess Servicing Strip will be "regular interests" in the REMIC, and the
Class R Certificates will be the sole class of "residual interests" therein for
purposes of the REMIC Provisions (as defined herein) under federal income tax
law.

              The following table sets forth the designation, initial
Pass-Through Rate, aggregate initial Certificate Principal Balance and certain
features for each Class of Certificates comprising the certificated interests in
the Trust Fund created hereunder.

<TABLE>
<CAPTION>

                                               AGGREGATE INITIAL
                                                   CERTIFICATE                                                       INITIAL
                              PASS-THROUGH         PRINCIPAL                                        MATURITY         RATINGS
 DESIGNATION     TYPE               RATE             BALANCE                 FEATURES                  DATE            S&P      DCR
 -----------     ----               ----             -------                 --------                  ----            ---      ---

<S>           <C>            <C>              <C>                     <C>                      <C>                    <C>       <C>
Class A-1       Senior           7.00%           $269,772,582.00              Senior           September 25, 2028      AAA      AAA
Class A-2       Senior           0.00%             $9,991,578.00      Senior/Principal Only    September 25, 2028     AAAr      AAA
Class A-3       Senior       Variable Rate    $             0(1)      Senior/Variable Strip    September 25, 2028     AAAr      AAA
Class R         Senior           6.75%                   $100.00         Residual/Senior       September 25, 2028      AAA      AAA
Class M-1      Mezzanine         6.75%             $7,291,728.00            Mezzanine          September 25, 2028      AA       N/A
                                              $
Class M-2      Mezzanine         6.75%              3,571,458.00            Mezzanine          September 25, 2028       A       N/A
                                              $
Class M-3      Mezzanine         6.75%              2,083,350.00            Mezzanine          September 25, 2028      BBB      N/A
                                              $
Class B-1     Subordinate        6.75%              2,083,350.00           Subordinate         September 25, 2028      BB       N/A
                                              $
Class B-2     Subordinate        6.75%              1,190,486.00           Subordinate         September 25, 2028       B       N/A
                                              $
Class B-3     Subordinate        6.75%              1,636,921.63           Subordinate         September 25, 2028      N/A      N/A
</TABLE>

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

(1)    Based on the Notional Amount.

              Solely for purposes of Section 1.860G-1(a)(4)(iii) of the Treasury
regulations, the Distribution Date immediately following the maturity date for
the Mortgage Loan with the latest maturity date in the Mortgage Pool has been
designated as the "latest possible maturity date" for the Certificates.



<PAGE>

                                       -2-

              As of the Cut-off Date, the Mortgage Loans have an aggregate
Stated Principal Balance equal to $297,621,553.63.

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

                                    ARTICLE I

                                   DEFINITIONS

              SECTION 1.01. Defined Terms.

              Whenever used in this Agreement, the following words and phrases,
unless the context otherwise requires, shall have the meanings specified in this
Article.

              "Accrued Certificate Interest": With respect to each Distribution
Date, (a) as to any Certificate other than the Variable Strip Certificates, one
month's interest accrued at the related Pass-Through Rate on the Certificate
Principal Balance thereof immediately prior to such Distribution Date; and (b)
as to any Variable Strip Certificate and the Excess Servicing Strip, one month's
interest accrued at the then applicable Pass-Through Rate on the related
Notional Amount thereof immediately prior to such Distribution Date. Accrued
Certificate Interest will be calculated on the basis of a 360-day year
consisting of twelve 30-day months. In each case Accrued Certificate Interest on
any Class of Certificates and the Excess Servicing Strip will be reduced by the
amount of (i) Prepayment Interest Shortfalls, if any, which are not covered by
the Master Servicer with a payment of Compensating Interest pursuant to Section
3.23 with respect to such Distribution Date, (ii) the interest portion (adjusted
to the related Net Mortgage Rate) of Realized Losses (including Excess Special
Hazard Losses, Excess Fraud Losses, Excess Bankruptcy Losses and Extraordinary
Losses) not allocated solely to one or more Classes of Certificates pursuant to
Section 4.04 and (iii) any other interest shortfalls not covered by the
subordination provided by the Class M Certificates or Class B Certificates,
including interest that is not collectible from the Mortgagor pursuant to the
Relief Act or similar legislation or regulations as in effect from time to time
with all such reductions allocated among all of the Certificates in proportion
to their respective amounts of Accrued Certificate Interest payable on such
Distribution Date which would have resulted absent such reductions. In addition
to that portion of the reductions described in the preceding sentence that are
allocated to any Class of Class M Certificates or Class B Certificates, Accrued
Certificate Interest on any Class of the Class M Certificates or Class B
Certificates, as applicable, will be reduced by the interest portion (adjusted
to the related Net Mortgage Rate) of the portion of Realized Losses that are
allocated solely to the Class M and Class B Certificates, as applicable,
pursuant to Section 4.04.




<PAGE>

                                      -3-


              "Advance": As to any Mortgage Loan, any advance made by the
Master Servicer on any Distribution Date pursuant to Section 4.03.

              "Agreement": This Pooling and Servicing Agreement and all
amendments hereof.

              "Anniversary": Each anniversary of September 1, 1998.

              "Assignment": An assignment of Mortgage, notice of transfer or
equivalent instrument, in recordable form, which is sufficient under the laws of
the jurisdiction wherein the related Mortgaged Property is located to reflect of
record the sale of the Mortgage.

              "Available Distribution Amount": With respect to any Distribution
Date, an amount equal to (a) the sum of (i) the balance on deposit in the
Custodial Account as of the close of business on the related Determination Date
and (ii) the aggregate amount of any Advances made and all amounts required to
be paid by the Master Servicer pursuant to Sections 3.13 and 3.23 by deposits
into the Certificate Account on the immediately preceding Certificate Account
Deposit Date, reduced by (b) the sum, as of the close of business on the related
Determination Date, of (i) Monthly Payments collected but due during a Due
Period subsequent to the Due Period ending on the first day of the month of the
related Distribution Date, (ii) all interest or other income earned on deposits
in the Custodial Account or the Certificate Account, (iii) any other amounts
reimbursable or payable to the Master Servicer or any Sub-Servicer pursuant to
Section 3.11, (iv) the Master Servicing Fees and Servicing Fees payable on such
Distribution Date and (v) Insurance Proceeds, Liquidation Proceeds, Principal
Prepayments, REO Proceeds and the proceeds of Mortgage Loan purchases made
pursuant to Section 2.02, 2.04, 3.14, 3.22 or 3.24, in each case received or
made in the month of such Distribution Date.

              "Bankruptcy Amount": As of any date of determination prior to the
first Anniversary, an amount equal to the excess, if any, of (A) $143,230 over
(B) the aggregate amount of Bankruptcy Losses allocated solely to one or more
specific Classes of Certificates in accordance with Section 4.04. As of any date
of determination on or after the first Anniversary, an amount equal to the
excess, if any, of the lesser of (a) the Bankruptcy Amount calculated as of the
close of business on the Business Day immediately preceding the most recent
Anniversary coinciding with or preceding such date of determination (or, if such
date of determination is an Anniversary, the Business Day immediately preceding
such date of determination) (for purposes of this definition, the "Relevant
Anniversary") and (b) the greater of (i) $143,230 and (ii) 0.0006 times the
aggregate principal balance of all the Mortgage Loans in the Mortgage Pool as of
the Relevant Anniversary having a Loan-to-Value Ratio at origination which
exceeds 75%.

              The Bankruptcy Amount may be further reduced by the Master
Servicer (including accelerating the manner in which such coverage is reduced)
provided that prior to any

<PAGE>

                                      -4-


such reduction, the Master Servicer shall (i) obtain written confirmation from
each Rating Agency that such reduction shall not reduce the rating assigned to
any Class of Certificates by such Rating Agency below the lower of the
then-current rating or the rating assigned to such Certificates as of the
Closing Date by such Rating Agency and (ii) provide a copy of such written
confirmation to the Trustee.

              "Bankruptcy Code": The Bankruptcy Code of 1978, as amended.

              "Bankruptcy Loss": With respect to any Mortgage Loan, a Deficient
Valuation or Debt Service Reduction.

              "Book-Entry Certificate": Any Certificate registered in the name
of the Depository or its nominee.

              "Business Day": Any day other than a Saturday, a Sunday or a day
on which banking institutions in California or New York (and such other state or
states in which the Custodial Account or the Certificate Account are at the time
located) or in the city in which the Corporate Trust Office of the Trustee is
located are authorized or obligated by law or executive order to close.

              "Cash Liquidation": As to any defaulted Mortgage Loan other
than a Mortgage Loan as to which an REO Acquisition occurred, a determination by
the Master Servicer that it has received all Insurance Proceeds, Liquidation
Proceeds and other payments or cash recoveries which the Master Servicer
reasonably and in good faith expects to be finally recoverable with respect to
such Mortgage Loan.

              "Certificate": Any Class A-1, Class A-2, Class A-3, Class M-1,
Class M-2, Class M-3, Class B-1, Class B-2, Class B-3, or Class R Certificate.

              "Certificate Account": The trust account or accounts created and
maintained pursuant to Section 4.01, which shall be entitled "Bankers Trust
Company of California, N.A., in trust for registered holders of Impac Secured
Assets Corp., Mortgage Pass-Through Certificates, Series 1998-3, and which
account or accounts must each be an Eligible Account.

              "Certificate Account Deposit Date": With respect to any
Distribution Date, the third Business Day immediately preceding such
Distribution Date.

              "Certificateholder" or "Holder": The Person in whose name a
Certificate is registered in the Certificate Register, except that, only a
Permitted Transferee shall be a holder of a Residual Certificate for any
purposes hereof and, solely for the purposes of giving

<PAGE>

                                      -5-


any consent pursuant to this Agreement, any Certificate registered in the name
of the Depositor or the Master Servicer or any affiliate thereof shall be deemed
not to be outstanding and the Voting Rights to which such Certificate is
entitled shall not be taken into account in determining whether the requisite
percentage of Voting Rights necessary to effect any such consent has been
obtained, except as otherwise provided in Section 11.01. The Trustee shall be
entitled to rely upon a certification of the Depositor or the Master Servicer in
determining if any Certificates are registered in the name of the respective
affiliate. All references herein to "Holders" or "Certificateholders" shall
reflect the rights of Certificate Owners as they may indirectly exercise such
rights through the Depository and participating members thereof, except as
otherwise specified herein; provided, however, that the Trustee shall be
required to recognize as a "Holder" or "Certificateholder" only the Person in
whose name a Certificate is registered in the Certificate Register. References
herein to "Certificateholder" shall mean, with respect to the Excess Servicing
Strip, the Excess Servicing Strip Holder or its designee.

              "Certificate Owner": With respect to a Book-Entry Certificate, the
Person who is the beneficial owner of such Certificate, as reflected on the
books of an indirect participating brokerage firm for which a Depository
Participant acts as agent, if any, and otherwise on the books of a Depository
Participant, if any, and otherwise on the books of the Depository.

              "Certificate Principal Balance": With respect to any Certificate
other than a Variable Strip Certificate, on any date of determination, an amount
equal to (i) the Initial Certificate Principal Balance of such Certificate as
specified on the face thereof, minus (ii) the sum of (a) the aggregate of all
amounts previously distributed with respect to such Certificates (or any
predecessor Certificate) and applied to reduce the Certificate Principal Balance
thereof pursuant to Section 4.01, and (b) the aggregate of all reductions in
Certificate Principal Balance deemed to have occurred in connection with
Realized Losses which were previously allocated to such Certificate (or any
predecessor Certificate) pursuant to Section 4.04. With respect to each Class M
Certificate, on any date of determination, an amount equal to (i) the Initial
Certificate Principal Balance of such Class M Certificate as specified on the
face thereof, minus (ii) the sum of (x) the aggregate of all amounts previously
distributed with respect to such Certificate (or any predecessor Certificate)
and applied to reduce the Certificate Principal Balance thereof pursuant to
Section 4.01 and (y) the aggregate of all reductions in Certificate Principal
Balance deemed to have occurred in connection with Realized Losses which were
previously allocated to such Certificate (or any predecessor Certificate)
pursuant to Section 4.04; provided, that if the Certificate Principal Balances
of the Class B Certificates have been reduced to zero, the Certificate Principal
Balance of each Class M Certificate of those Class M Certificates outstanding
with the highest numerical designation at any given time shall thereafter be
calculated to equal the Percentage Interest evidenced by such Certificate times
the excess, if any, of (A) the then aggregate Stated Principal Balance of the
Mortgage Loans over (B) the then aggregate Certificate Principal Balance of all
other Classes of Certificates then outstanding. With respect to each Class B
Certificate, on any


<PAGE>

                                      -6-


date of determination, an amount equal to (i) the Initial Certificate Principal
Balance of such Class B Certificate as specified on the face thereof, minus (ii)
the sum of (x) the aggregate of all amounts previously distributed with respect
to such Certificate (or any predecessor Certificate) and applied to reduce the
Certificate Principal Balance thereof pursuant to Section 4.01 and (y) the
aggregate of all reductions in Certificate Principal Balance deemed to have
occurred in connection with Realized Losses which were previously allocated to
such Certificate (or any predecessor Certificate) pursuant to Section 4.04;
provided, that the Certificate Principal Balance of each Class B Certificate of
those Class B Certificates outstanding with the highest numerical designation at
any given time shall be calculated to equal the Percentage Interest evidenced by
such Certificate times the excess, if any, of (A) the then aggregate Stated
Principal Balance of the Mortgage Loans over (B) the then aggregate Certificate
Principal Balance of all other Classes of Certificates then outstanding. The
Variable Strip Certificates and the Excess Servicing Strip have no Certificate
Principal Balance.

              "Certificate Register": The register maintained pursuant to
Section 5.02.

              "Class": Collectively, all of the Certificates bearing the same
designation.

              "Class A Certificate": Any one of the Class A-1, Class A-2 or
Class A-3 Certificates, each executed, authenticated and delivered by the
Trustee substantially in the form annexed hereto as Exhibit A and each
evidencing an interest designated as a "regular interest" in the REMIC for
purposes of the REMIC Provisions.

              "Class B Percentage": The Class B-1 Percentage, Class B-2
Percentage and Class B-3 Percentage.

              "Class B-1 Certificate": Any one of the Class B-1 Certificates
executed, authenticated and delivered by the Trustee substantially in the form
annexed hereto as Exhibit B-1, subordinate to the Class A Certificates and the
Class M Certificates with respect to distributions and the allocation of
Realized Losses as set forth in Section 4.04 and evidencing an interest
designated as a "regular interest" in the REMIC for purposes of the REMIC
Provisions.

              "Class B-1 Percentage": With respect to any Distribution Date, the
lesser of 100% and a fraction, expressed as a percentage, the numerator of which
is the aggregate Certificate Principal Balance of the Class B-1 Certificates
immediately prior to such Distribution Date and the denominator of which is the
aggregate Stated Principal Balance of all of the Mortgage Loans (or related REO
Properties).

<PAGE>

                                      -7-


              "Class B-1 Prepayment Distribution Trigger": With respect to any
Distribution Date, a test that shall be satisfied if the fraction (expressed as
a percentage) equal to the sum of the Certificate Principal Balances of the
Class B-1 Certificates, Class B-2 Certificates and Class B-3 Certificates
immediately prior to such Distribution Date divided by the aggregate Stated
Principal Balance of all of the Mortgage Loans (or related REO Properties)
immediately prior to such Distribution Date is greater than or equal to 1.65%.

              "Class B-2 Certificate": Any one of the Class B-2 Certificates
executed, authenticated and delivered by the Trustee substantially in the form
annexed hereto as Exhibit B-1, subordinate to the Class A Certificates, Class M
Certificates and Class B-1 Certificates with respect to distributions and the
allocation of Realized Losses as set forth in Section 4.04 and evidencing an
interest designated as a "regular interest" in the REMIC for purposes of the
REMIC Provisions.

              "Class B-2 Percentage": With respect to any Distribution Date, the
lesser of 100% and a fraction, expressed as a percentage, the numerator of which
is the aggregate Certificate Principal Balance of the Class B-2 Certificates
immediately prior to such Distribution Date and the denominator of which is the
aggregate Stated Principal Balance of all of the Mortgage Loans (and related REO
Properties) immediately prior to such Distribution Date.

              "Class B-2 Prepayment Distribution Trigger": With respect to any
Distribution Date, a test that shall be satisfied if the fraction (expressed as
a percentage) equal to the sum of the Certificate Principal Balances of the
Class B-2 Certificates and Class B-3 Certificates immediately prior to such
Distribution Date divided by the aggregate Stated Principal Balance of all of
the Mortgage Loans (and related REO Properties) immediately prior to such
Distribution Date is greater than or equal to 0.95%.

              "Class B-3 Certificate": Any one of the Class B-3 Certificates
executed, authenticated and delivered by the Trustee substantially in the form
annexed hereto as Exhibit B-1, subordinate to the Class A Certificates, Class M
Certificates, Class B-1 Certificates and Class B-2 Certificates with respect to
distributions and the allocation of Realized Losses as set forth in Section 4.04
and evidencing an interest designated as a "regular interest" in the REMIC for
purposes of the REMIC Provisions.

              "Class B-3 Percentage": With respect to any Distribution Date, the
lesser of 100% and a fraction, expressed as a percentage, the numerator of which
is the aggregate Certificate Principal Balance of the Class B-3 Certificates
immediately prior to such Distribution Date and the denominator of which is the
aggregate Stated Principal Balance of all of the Mortgage Loans (and related REO
Properties) immediately prior to such Distribution Date.

<PAGE>

                                      -8-


              "Class B-3 Prepayment Distribution Trigger": With respect to any
Distribution Date, a test that shall be satisfied if the fraction (expressed as
a percentage) equal to the aggregate Certificate Principal Balance of the Class
B-3 Certificates immediately prior to such Distribution Date divided by the
aggregate Stated Principal Balance of all of the Mortgage Loans (or related REO
Properties) immediately prior to such Distribution Date is greater than or equal
to 0.55%.

              "Class M Certificate": Any one of the Class M-1 Certificates,
Class M-2 Certificates or Class M-3 Certificates executed, authenticated and
delivered by the Trustee substantially in the form annexed hereto as Exhibit B-2
and evidencing an interest designated as a "regular interest" in the REMIC for
purposes of the REMIC Provisions.

              "Class M Percentage": The Class M-1 Percentage, Class M-2
Percentage and Class M-3 Percentage.

              "Class M-1 Percentage": With respect to any Distribution Date, the
lesser of 100% and a fraction, expressed as a percentage, the numerator of which
is the aggregate Certificate Principal Balance of the Class M-1 Certificates
immediately prior to such date and the denominator of which is the aggregate
Stated Principal Balance of all of the Mortgage Loans (or related REO
Properties) immediately prior to such Distribution Date.

              "Class M-2 Percentage": With respect to any Distribution Date, the
lesser of 100% and a fraction, expressed as a percentage, the numerator of which
is the aggregate Certificate Principal Balance of the Class M-2 Certificates
immediately prior to such date and the denominator of which is the aggregate
Stated Principal Balance of all of the Mortgage Loans (or related REO
Properties) immediately prior to such Distribution Date.

              "Class M-2 Prepayment Distribution Trigger": With respect to any
Distribution Date, a test that shall be satisfied if the fraction (expressed as
a percentage) equal to the sum of the Certificate Principal Balances of the
Class M-2 Certificates, Class M-3 Certificates, Class B-1 Certificates, Class
B-2 Certificates and Class B-3 Certificates immediately prior to such
Distribution Date divided by the aggregate Stated Principal Balance of all of
the Mortgage Loans (or related REO Properties) immediately prior to such
Distribution Date is greater than or equal to 3.55%.

              "Class M-3 Percentage": With respect to any Distribution Date, the
lesser of 100% and a fraction, expressed as a percentage, the numerator of which
is the aggregate Certificate Principal Balance of the Class M-3 Certificates
immediately prior to such date and the denominator of which is the aggregate
Stated Principal Balance of all of the Mortgage Loans (or related REO
Properties) immediately prior to such Distribution Date.

<PAGE>

                                      -9-


              "Class M-3 Prepayment Distribution Trigger": With respect to any
Distribution Date, a test that shall be satisfied if the fraction (expressed as
a percentage) equal to the sum of the Certificate Principal Balances of the
Class M-3 Certificates, Class B-1 Certificates, Class B-2 Certificates and Class
B-3 Certificates immediately prior to such Distribution Date divided by the
aggregate Stated Principal Balance of all of the Mortgage Loans (and related REO
Properties) immediately prior to such Distribution Date is greater than or equal
to 2.35%.

              "Class R Certificate": Any one of the Class R Certificates
executed by the Trustee and authenticated by the Certificate Registrar
substantially in the form annexed hereto as Exhibit B-3 and evidencing an
interest designated as a "residual interest" in the REMIC for purposes of the
REMIC Provisions.

              "Closing Date": September 29, 1998.

              "CMAC": Commonwealth Mortgage Assurance Company, or its successors
or assigns.

              "CMAC Insured Loans": The Mortgage Loans included in the Trust
Fund covered by the CMAC PMI Policy, as indicated on the Mortgage Loan Schedule.

              "CMAC PMI Policies": The modified primary insurance pool policies
issued with respect to certain of the Mortgage Loans by CMAC.

              "CMAC PMI Policy Rate": With respect to any CMAC Insured Loan, the
rate per annum at which the related premium on the related CMAC PMI Policy
accrues.

              "Code": The Internal Revenue Code of 1986, as amended.

              "Collateral Value": The appraised value of a Mortgaged Property
based upon the lesser of (i) the appraisal (as reviewed and approved by the
Seller) made at the time of the origination of the related Mortgage Loan, or
(ii) the sales price of such Mortgaged Property at such time of origination.
With respect to a Mortgage Loan the proceeds of which were used to refinance an
existing mortgage loan, the appraised value of the Mortgaged Property based upon
the appraisal (as reviewed and approved by the Seller) obtained at the time of
refinancing.

              "Commission": The Securities and Exchange Commission.

              "Compensating Interest": With respect to any Distribution Date, an
amount equal to Prepayment Interest Shortfalls resulting from Principal
Prepayments during the related Prepayment Period, but not more than one-twelfth
of 0.125% of the Stated Principal Balance of the Mortgage Loans immediately
preceding such Distribution Date.

<PAGE>

                                      -10-


              "Corporate Trust Office": The principal corporate trust office of
the Trustee at which at any particular time its corporate trust business related
to this Agreement shall be administered, which office at the date of the
execution of this Agreement is located at 3 Park Plaza, 16th Floor, Irvine,
California 92614, Attention: Impac Secured Assets Corp. Series 1998-3.

              "Credit Support Depletion Date": The first Distribution Date on
which the Senior Percentage equals 100%.

              "Curtailment": Any Principal Prepayment made by a Mortgagor which
is not a Principal Prepayment in Full.

              "Custodial Account": The custodial account or accounts created and
maintained pursuant to Section 3.10 in the name of a depository institution, as
custodian for the holders of the Certificates, for the holders of certain other
interests in mortgage loans serviced or sold by the Master Servicer and for the
Master Servicer, into which the amounts set forth in Section 3.10 shall be
deposited directly. Any such account or accounts shall be an Eligible Account.

              "Cut-off Date": September 1, 1998.

              "DCR": Duff & Phelps Credit Rating Co., or any successor.

              "Debt Service Reduction": With respect to any Mortgage Loan, a
reduction in the scheduled Monthly Payment for such Mortgage Loan by a court of
competent jurisdiction in a proceeding under the Bankruptcy Code, except such a
reduction constituting a Deficient Valuation or any reduction that results in a
permanent forgiveness of principal.

              "Defaulted Mortgage Loan" means any Mortgage Loan as to which the
Mortgagor has failed to make unexcused three or more consecutive scheduled
Monthly Payments.

              "Defaulted Mortgage Loss": With respect to any Mortgage Loan, any
loss that is attributable to the Mortgagor's failure to make any payment of
principal or interest as required under the Mortgage Note, except that such loss
shall not include any Special Hazard Loss, Fraud Loss, Bankruptcy Loss,
Extraordinary Loss or other loss resulting from damage to the related Mortgaged
Property.

              "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 the Mortgage Loan, or
any reduction in the amount of

<PAGE>

                                      -11-


principal to be paid in connection with any scheduled Monthly Payment that
constitutes a permanent forgiveness of principal, which valuation or reduction
results from a proceeding under the Bankruptcy Code.

              "Definitive Certificate": Any definitive, fully registered
Certificate.

              "Deleted Mortgage Loan": A Mortgage Loan replaced or to be
replaced with a Qualified Substitute Mortgage Loan.

              "Depositor": Impac Secured Assets Corp., or its successor in
interest.

              "Depository " The Depository Trust Company, or any successor
Depository hereafter named. The nominee of the initial Depository for purposes
of registering those Certificates that are to be Book-Entry Certificates is Cede
& Co. The Depository shall at all times be a "clearing corporation" as defined
in Section 8-102(5) of the Uniform Commercial Code of the State of New York and
a "clearing agency" registered pursuant to the provisions of Section 17A of the
Securities Exchange Act of 1934, as amended.

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

              "Determination Date": The 15th day (or if such 15th day is not a
Business Day, the Business Day immediately preceding such 15th day) of the month
of the related Distribution Date.

              "Disqualified Organization": Any organization defined as a
"disqualified organization" under Section 860E(e)(5) of the Code, which includes
any of the following: (i) the United States, any State or political subdivision
thereof, any possession of the United States, or any agency or instrumentality
of any of the foregoing (other than an instrumentality which is a corporation if
all of its activities are subject to tax and, except for the FHLMC, a majority
of its board of directors is not selected by such governmental unit), (ii) a
foreign government, any international organization, or any agency or
instrumentality of any of the foregoing, (iii) any organization (other than
certain farmers' cooperatives described in Section 521 of the Code) which is
exempt from the tax imposed by Chapter 1 of the Code (including the tax imposed
by Section 511 of the Code on unrelated business taxable income), (iv) rural
electric and telephone cooperatives described in Section 1381(a)(2)(C) of the
Code and (v) any other Person so designated by the Trustee based upon an Opinion
of Counsel that the holding of an Ownership Interest in a Class R Certificate by
such Person may cause either the REMIC or any Person having an Ownership
Interest in any Class of Certificates (other than such Person) to incur a
liability for

<PAGE>

                                      -12-


any federal tax imposed under the Code that would not otherwise be imposed but
for the Transfer of an Ownership Interest in a Class R Certificate to such
Person. The terms "United States", "State" and "international organization"
shall have the meanings set forth in Section 7701 of the Code or successor
provisions.

              "Distribution Date": The 25th day of any month, or if such 25th
day is not a Business Day, the Business Day immediately following such 25th day,
commencing in October 1998.

              "Due Date": The first day of the month of the related Distribution
Date.

              "Due Period": With respect to any Distribution Date, the period
commencing on the second day of the month preceding the month of such
Distribution Date (or, with respect to the first Due Period, the day following
the Cut-off Date) and ending on the related Due Date.

              "Eligible Account": An account maintained with a federal or state
chartered depository institution (i) the short-term obligations of which are
rated A-1 or better by Standard & Poors and D-1 or better by DCR at the time of
any deposit therein, or (ii) insured by the FDIC (to the limits established by
such Corporation), the uninsured deposits in which account are otherwise secured
such that, as evidenced by an Opinion of Counsel (obtained by the Person
requesting that the account be held pursuant to this clause (ii)) delivered to
the Trustee prior to the establishment of such account, the Certificateholders
will have a claim with respect to the funds in such account and a perfected
first priority security interest against any collateral (which shall be limited
to Permitted Investments, each of which shall mature not later than the Business
Day immediately preceding the Distribution Date next following the date of
investment in such collateral or the Distribution Date if such Permitted
Investment is an obligation of the institution that maintains the Certificate
Account or Custodial Account) securing such funds that is superior to claims of
any other depositors or general creditors of the depository institution with
which such account is maintained or (iii) a trust account or accounts maintained
with a federal or state chartered depository institution or trust company with
trust powers acting in its fiduciary capacity or (iv) an account or accounts of
a depository institution acceptable to the Rating Agencies (as evidenced in
writing by the Rating Agencies that use of any such account as the Custodial
Account or the Certificate Account will not have an adverse effect on the
then-current ratings assigned to the Classes of the Certificates then rated by
the Rating Agencies). Eligible Accounts may bear interest.

              "Event of Default": One or more of the events described in Section
7.01.

<PAGE>

                                      -13-


              "Excess Bankruptcy Loss": Any Bankruptcy Loss, or portion thereof,
which exceeds the then applicable Bankruptcy Amount.

              "Excess Fraud Loss": Any Fraud Loss, or portion thereof, which
exceeds the then applicable Fraud Loss Amount.

              "Excess Proceeds": As defined in Section 3.22.

              "Excess Servicing Strip": An uncertificated REMIC "regular
interest" in the REMIC, represented by the right of the Excess Servicing Strip
Holder to receive distributions with respect to such interest pursuant to
Section 3.27 hereof.

              "Excess Servicing Strip Holder": The holder of the contractual
right to receive distributions with respect to the Excess Servicing Strip, which
shall initially be PNC Mortgage Corp. of America.

              "Excess Special Hazard Loss": Any Special Hazard Loss, or portion
thereof, that exceeds the then applicable Special Hazard Amount.

              "Extraordinary Events": Any of the following conditions with
respect to a Mortgaged Property or Mortgage Loan causing or resulting in a loss
which causes the liquidation of such Mortgage Loan:

              (a) losses which are otherwise covered by the fidelity bond and
       the errors and omissions insurance policy maintained pursuant to Section
       3.18, but are in excess of the coverage maintained thereunder;

              (b) nuclear reaction or nuclear radiation or radioactive
       contamination, all whether controlled or uncontrolled, or remote or be in
       whole or in part caused by, contributed to or aggravated by a peril
       covered by the definition of the term "Special Hazard Loss";

              (c) hostile or warlike action in time of peace or war, including
       action in hindering, combating or defending against an actual, impending
       or expected attack;

                     1. by any government or sovereign power, de jure or de
              facto, or by any authority maintaining or using military, naval or
              air forces; or

                     2. by military, naval or air forces; or

<PAGE>

                                      -14-


                     3. by an agent of any such government, power, authority or
              forces;

              (d) any weapon of war employing atomic fission or radioactive
       force whether in time of peace or war; or

              (e) insurrection, rebellion, revolution, civil war, usurped power
       or action taken by governmental authority in hindering, combating or
       defending against such an occurrence, seizure or destruction under
       quarantine or customs regulations, confiscation by order of any
       government or public authority; or risks of contraband or illegal
       transportation or trade.

              "Extraordinary Losses": Any loss incurred on a Mortgage Loan
caused by or resulting from an Extraordinary Event.

              "FDIC": Federal Deposit Insurance Corporation or any successor.

              "Final Disposition": With respect to a defaulted Mortgage Loan is
deemed to have occurred upon a determination by the Master Servicer that it has
received all Insurance Proceeds, Liquidation Proceeds and other payments or cash
recoveries which the Master Servicer reasonably and in good faith expects to be
finally recoverable with respect to such Mortgage Loan.

              "FHLMC": Federal Home Loan Mortgage Corporation or any successor.

              "FNMA": Federal National Mortgage Association or any successor.

              "Fraud Loss Amount": As of any date of determination after the
Cut-off Date, an amount equal to: (Y) prior to the first Anniversary, an amount
equal to 2.00% of the aggregate outstanding principal balance of all of the
Mortgage Loans as of the Cut-off Date minus the aggregate amount of Fraud Losses
allocated solely to one or more specific Classes of Certificates in accordance
with Section 4.04 since the Cut-off Date up to such date of determination and
(Z) from the first to the fifth Anniversary, an amount equal to the lesser of
(a) the Fraud Loss Amount as of the most recent anniversary of the Cut-off Date
and (b) 1.00% of the aggregate outstanding principal balance of all of the
Mortgage Loans as of the most recent Anniversary minus (2) the Fraud Losses
allocated solely to one or more specific Classes of Certificates in accordance
with Section 4.04 since the most recent Anniversary up to such date of
determination. On and after the fifth Anniversary, the Fraud Loss Amount shall
be zero.

<PAGE>

                                      -15-


              The Fraud Loss Amount may be further reduced by the Master
Servicer (including accelerating the manner in which such coverage is reduced)
provided that prior to any such reduction, the Master Servicer shall (i) obtain
written confirmation from each Rating Agency that such reduction shall not
reduce the rating assigned to any Class of Certificates by such Rating Agency
below the lower of the then-current rating or the rating assigned to such
Certificates as of the Closing Date by such Rating Agency and (ii) provide a
copy of such written confirmation to the Trustee.

              "Fraud Losses": Losses on Mortgage Loans as to which there was
fraud in the origination of such Mortgage Loan.

              "Funding Date": With respect to each Mortgage Loan, the date on
which funds were advanced by or on behalf of the Seller and interest began to
accrue thereunder.

              "Initial Certificate Principal Balance": With respect to each
Class of Regular Certificates, the Certificate Principal Balance of such Class
of Certificates as of the Cut-off Date as set forth in the Preliminary Statement
hereto.

              "Initial Notional Amount": With respect to the Variable Strip
Certificates and the Excess Servicing Strip, the aggregate Stated Principal
Balance of the Mortgage Loans as of the Cut-off Date.

              "Insurance Policy": With respect to any Mortgage Loan, any
insurance policy (including the CMAC PMI Policies) which is required to be
maintained from time to time under this Agreement in respect of such Mortgage
Loan.

              "Insurance Proceeds": Proceeds paid in respect of the Mortgage
Loans pursuant to any Primary Hazard Insurance Policy, any title insurance
policy or any other insurance policy covering a Mortgage Loan, to the extent
such proceeds are not applied to the restoration of the related Mortgaged
Property or released to the Mortgagor in accordance with the procedures that the
Master Servicer would follow in servicing mortgage loans held for its own
account.

              "Late Collections": With respect to any Mortgage Loan, all amounts
received during any Due Period, whether as late payments of Monthly Payments or
as Insurance Proceeds, Liquidation Proceeds or otherwise, which represent late
payments or collections of Monthly Payments due but delinquent for a previous
Due Period and not previously recovered.

              "Liquidation Proceeds": Amounts (other than Insurance Proceeds)
received by the Master Servicer in connection with the taking of an entire
Mortgaged Property by exercise of the power of eminent domain or condemnation or
in connection with the liquidation

<PAGE>

                                      -16-


of a defaulted Mortgage Loan through trustee's sale, foreclosure sale or
otherwise, other than amounts received in respect of any REO Property.

              "Loan-to-Value Ratio": As of any date, the fraction, expressed as
a percentage, the numerator of which is the current principal balance of the
related Mortgage Loan at the date of determination and the denominator of which
is the Collateral Value of the related Mortgaged Property.

              "Lost Note Affidavit": With respect to any Mortgage Note, an
original lost note affidavit from the Seller stating that the original Mortgage
Note was lost, misplaced or destroyed, together with a copy of the related
Mortgage Note.

              "Master Servicer": PNC Mortgage Securities Corp., or any successor
master servicer appointed as herein provided.

              "Master Servicing Fees": As to each Mortgage Loan, an amount,
payable out of any payment of interest on the Mortgage Loan, equal to interest
at the Master Servicing Fee Rate on the Stated Principal Balance of such
Mortgage Loan for the calendar month preceding the month in which the payment is
due (alternatively, in the event such payment of interest accompanies a
Principal Prepayment in full made by the Mortgagor, interest for the number of
days covered by such payment of interest).

              "Master Servicing Fee Rate": With respect to each Mortgage Loan,
the per annum rate of 0.04%.

              "Maturity Date": The latest possible maturity date, solely for
purposes of Section 1.860G-1(a)(4)(iii) of the Treasury regulations, by which
(i) the Certificate Principal Balance of each Class of Certificates (other than
the Variable Strip Certificates) or (ii) the Notional Amount of the Variable
Strip Certificate and the Excess Servicing Strip would be reduced to zero, which
is September 25, 2028, the Distribution Date immediately following the latest
scheduled maturity date of any Mortgage Loan.

              "Monthly Payment": With respect to any Mortgage Loan, the
scheduled monthly payment of principal and interest on such Mortgage Loan which
is payable by a Mortgagor from time to time under the related Mortgage Note as
originally executed (after adjustment, if any, for Principal Prepayments and for
Deficient Valuations occurring prior to such Due Date, and after any adjustment
by reason of any bankruptcy or similar proceeding or any moratorium or similar
waiver or grace period).

              "Moody's": Moody's Investors Service, Inc., or its successor in
interest.

<PAGE>

                                      -17-


              "Mortgage": The mortgage, deed of trust or any other instrument
securing the Mortgage Loan.

              "Mortgage File": The mortgage documents listed in Section 2.01
pertaining to a particular Mortgage Loan and any additional documents required
to be added to the Mortgage File pursuant to this Agreement; provided, that
whenever the term "Mortgage File" is used to refer to documents actually
received by the Trustee, such term shall not be deemed to include such
additional documents required to be added unless they are actually so added.

              "Mortgage Loan": Each of the mortgage loans, transferred and
assigned to the Trustee pursuant to Section 2.01 or Section 2.04 and from time
to time held in the Trust Fund (including any Qualified Substitute Mortgage
Loans), the Mortgage Loans so transferred, assigned and held being identified in
the Mortgage Loan Schedule. As used herein, the term "Mortgage Loan" includes
the related Mortgage Note and Mortgage.

              "Mortgage Loan Accrued Interest": With respect to each Mortgage
Loan and each Due Date, the aggregate amount of interest accrued at the Mortgage
Rate in respect of such Mortgage Loan since the preceding Due Date (or in the
case of the initial Due Date, since the Cut-off Date) to but not including such
Due Date with respect to which the Mortgage Loan Accrued Interest is being
calculated in accordance with the terms of such Mortgage Loan, after giving
effect to any previous Principal Prepayments, Deficient Valuation or Debt
Service Reduction in respect of such Mortgage Loan.

              "Mortgage Loan Purchase Agreement": The Mortgage Loan Purchase
Agreement dated as of September 1, 1998, among Impac Funding Corporation, as
seller, Impac Mortgage Holdings, Inc., as guarantor, and the Depositor as
purchaser, and all amendments thereof and supplements thereto.

              "Mortgage Loan Schedule": As of any date of determination, the
schedule of Mortgage Loans included in the Trust Fund. The initial schedule of
Mortgage Loans with accompanying information transferred on the Closing Date to
the Trustee as part of the Trust Fund for the Certificates, attached hereto as
Exhibit H (as amended from time to time to reflect the addition of Qualified
Substitute Mortgage Loans) (and, for purposes of the Trustee pursuant to Section
2.02, in computer-readable form as delivered to the Trustee), which list shall
set forth the following information with respect to each Mortgage Loan:

              (i) the loan number and name of the Mortgagor;

              (ii) the street address, city, state and zip code of the Mortgaged
       Property;

                                      -18-

<PAGE>


              (iii) the original term to maturity;

              (iv) the original principal balance and the original Mortgage
       Rate;

              (v) the first payment date;

              (vi) the type of Mortgaged Property;

              (vii) the Monthly Payment in effect as of the Cut-off Date;

              (viii) the principal balance as of the Cut-off Date;

              (ix) the Mortgage Rate as of the Cut-off Date and the Pool Strip
       Rate;

              (x) the occupancy status;

              (xi) the purpose of the Mortgage Loan;

              (xii) the Collateral Value of the Mortgaged Property;

              (xiii) the original term to maturity;

              (xiv) the paid-through date of the Mortgage Loan;

              (xv) the Master Servicing Fee Rate and Servicing Fee Rate;

              (xvi) the Net Mortgage Rate for such Mortgage Loan;

              (xvii) the documentation type.

              The Mortgage Loan Schedule may be in the form of more than one
schedule, collectively setting forth all of the information required.

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

              "Mortgage Rate": With respect to any Mortgage Loan, the annual
rate at which interest accrues on such Mortgage Loan, as adjusted from time to
time in accordance with the provisions of the Mortgage Note.

<PAGE>

                                      -19-


              "Mortgaged Property": The underlying property securing a Mortgage
Loan.

              "Mortgagor": The obligor or obligors on a Mortgage Note.

              "Net Mortgage Rate": With respect to each Mortgage Loan Due Date,
a per annum rate of interest equal to the then-applicable Mortgage Rate on such
Mortgage Loan less the sum of the Master Servicing Fee Rate, the Servicing Fee
Rate and the Trustee Fee Rate and, with respect to the CMAC Insured Loans, the
related CMAC PMI Policy Rate.

              "Nonrecoverable Advance": Any Advance or Servicing Advance
previously made or proposed to be made in respect of a Mortgage Loan which, in
the good faith judgment of the Master Servicer, will not or, in the case of a
proposed Advance or Servicing Advance, would not be ultimately recoverable from
related Late Collections, Insurance Proceeds, Liquidation Proceeds or REO
Proceeds. The determination by the Master Servicer that it has made a
Nonrecoverable Advance or that any proposed Advance or Servicing Advance would
constitute a Nonrecoverable Advance, shall be evidenced by a certificate of a
Servicing Officer delivered to the Depositor and the Trustee.

              "Non-United States Person": Any Person other than a United States
Person.

              "Notional Amount": With respect to the Variable Strip Certificates
and the Excess Servicing Strip as of any Distribution Date, an amount equal to
the aggregate Stated Principal Balance of the Mortgage Loans immediately prior
to such date.

              "Officers' Certificate": A certificate signed by the Chairman of
the Board, the Vice Chairman of the Board, the President or a vice president and
by the Treasurer, the Secretary, or one of the assistant treasurers or assistant
secretaries of the Master Servicer or of the Sub-Servicer and delivered to the
Depositor and Trustee.

              "Opinion of Counsel": A written opinion of counsel, who may be
counsel for the Depositor or the Master Servicer, reasonably acceptable to the
Trustee; except that any opinion of counsel relating to (a) the qualification of
any account required to be maintained pursuant to this Agreement as an Eligible
Account, (b) the qualification of the Trust Fund as a REMIC, (c) compliance with
the REMIC Provisions or (d) resignation of the Master Servicer pursuant to
Section 6.04 must be an opinion of counsel who (i) is in fact independent of the
Depositor and the Master Servicer, (ii) does not have any direct financial
interest or any material indirect financial interest in the Depositor or the
Master Servicer or in an affiliate of either and

<PAGE>

                                      -20-


(iii) is not connected with the Depositor or the Master Servicer as an
officer, employee, director or person performing similar functions.

              "Original Senior Percentage": The fraction, expressed as a
percentage, the numerator of which is the aggregate Initial Certificate
Principal Balance of the Class A Certificates and the Class R Certificates and
the denominator of which is the aggregate Stated Principal Balance of the
Mortgage Loans, which is approximately 94.00% as of the Closing Date.

              "OTS": Office of Thrift Supervision or any successor.

              "Outstanding Mortgage Loan": As to any Due Date, a Mortgage Loan
(including an REO Property) which was not the subject of a Principal Prepayment
in Full, Cash Liquidation or REO Disposition and which was not purchased prior
to such Due Date pursuant to Sections 2.02, 2.04, 3.14 or 3.24.

              "Ownership Interest": As to any Certificate, any ownership or
security interest in such Certificate, including any interest in such
Certificate as the Holder thereof and any other interest therein, whether direct
or indirect, legal or beneficial, as owner or as pledgee.

              "Pass-Through Rate": A rate equal to, (i) with respect to all
Certificates other than the Variable Strip Certificates, a fixed rate set forth
in the Preliminary Statement hereto, (ii) with respect to the Variable Strip
Certificates, the weighted average, expressed as a percentage carried to four
decimal places, of (a) a fraction equal to exactly (x) 9837 over (y) 14437 times
(b) the Pool Strip Rates on each of the Mortgage Loans as of the Due Date in the
month immediately preceding the month in which such Distribution Date occurs,
weighted on the basis of the respective Stated Principal Balances of the
Mortgage Loans, which Stated Principal Balances shall be the Stated Principal
Balances of the Mortgage Loans at the close of business on the immediately
preceding Distribution Date after giving effect to distributions thereon
allocable to principal (or, in the case of the Pass-Through Rate for the initial
Distribution Date, at the close of business on the Cut-off Date) and (iii) with
respect to the Excess Servicing Strip, the weighted average, expressed as a
percentage carried to four decimal places, of (a) a fraction equal to exactly
(x) 4600 over (y) 14437 times (b) the Pool Strip Rates on each of the Mortgage
Loans as of the Due Date in the month immediately preceding the month in which
such Distribution Date occurs, weighted on the basis of the respective Stated
Principal Balances of the Mortgage Loans, which Stated Principal Balances shall
be the Stated Principal Balances of the Mortgage Loans at the close of business
on the immediately preceding Distribution Date after giving effect to
distributions thereon allocable to principal (or, in the case of the
Pass-Through Rate for the initial Distribution Date, at the close of business on
the Cut-off Date).

<PAGE>

                                      -21-


              "Percentage Interest": With respect to any Certificate (other than
a Class R Certificate), the undivided percentage ownership interest in the
related Class evidenced by such Certificate, which percentage ownership interest
shall be equal to the Initial Certificate Principal Balance thereof or Initial
Notional Amount (in the case of the Variable Strip Certificates) divided by the
aggregate Initial Certificate Principal Balance or initial Notional Amount, as
applicable, of all of the Certificates of the same Class. With respect to a
Class R Certificate, the interest in distributions to be made with respect to
such Class evidenced thereby, expressed as a percentage, as stated on the face
of each such Certificate.

              "Permitted Investment": One or more of the following:

              (i) obligations of or guaranteed as to principal and interest by
       the United States or any agency or instrumentality thereof when such
       obligations are backed by the full faith and credit of the United States;

              (ii) repurchase agreements on obligations specified in clause (i)
       maturing not more than one month from the date of acquisition thereof,
       provided that the unsecured obligations of the party agreeing to
       repurchase such obligations are at the time rated by each Rating Agency
       in one of the two highest short-term ratings available;

              (iii) federal funds, certificates of deposit, demand deposits,
       time deposits and bankers' acceptances (which shall each have an original
       maturity of not more than 90 days and, in the case of bankers'
       acceptances, shall in no event have an original maturity of more than 365
       days or a remaining maturity of more than 30 days) denominated in United
       States dollars of any U.S. depository institution or trust company
       incorporated under the laws of the United States or any state thereof or
       of any domestic branch of a foreign depository institution or trust
       company; provided that the debt obligations of such depository
       institution or trust company (or, if the only Rating Agency is Standard &
       Poor's, in the case of the principal depository institution in a
       depository institution holding company, debt obligations of the
       depository institution holding company) at the date of acquisition
       thereof have been rated by each Rating Agency in one of the two highest
       short-term ratings available; and provided further that, if the only
       Rating Agency is Standard & Poor's and if the depository or trust company
       is a principal subsidiary of a bank holding company and the debt
       obligations of such subsidiary are not separately rated, the applicable
       rating shall be that of the bank holding company; and, provided further
       that, if the original maturity of such short-term obligations of a
       domestic branch of a foreign depository institution or trust company
       shall exceed 30 days, the short-term

<PAGE>

                                      -22-


       rating of such institution shall be A-1+ in the case of Standard & Poor's
       if Standard & Poor's is the Rating Agency;

              (iv) commercial paper (having original maturities of not more than
       365 days) of any corporation incorporated under the laws of the United
       States or any state thereof which on the date of acquisition has been
       rated by DCR in its highest short-term rating available and by Standard &
       Poor's at least A-1; provided that such commercial paper shall have a
       remaining maturity of not more than 30 days;

              (v) a money market fund or a qualified investment fund rated by
       each Rating Agency in one of the two highest long-term ratings available;
       and

              (vi) other obligations or securities that are acceptable to each
       Rating Agency as a Permitted Investment hereunder and will not reduce the
       rating assigned to any Class of Certificates by such Rating Agency below
       the lower of the then-current rating or the rating assigned to such
       Certificates as of the Closing Date by such Rating Agency, as evidenced
       in writing;

PROVIDED, HOWEVER, that no instrument shall be a Permitted Investment if it
represents, either (1) the right to receive only interest payments with respect
to the underlying debt instrument or (2) the right to receive 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 greater than 120% of the yield to maturity at par of such underlying
obligations.

              "Permitted Transferee": Any transferee of a Residual Certificate
other than a Disqualified Organization, a Non-United States Person or an
"electing large partnership" (as defined in Section 775 of the Code).

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

              "Pool Strip Rate": With respect to any Distribution Date and any
Mortgage Loan, the Net Mortgage Rate thereon minus 6.75%, but not less than
0.00%.

              "Prepayment Assumption": represents an assumed rate of prepayment
each month relative to the then outstanding principal balance of a pool of new
mortgage loans. A 100% Prepayment Assumption assumes a constant prepayment rate
of 4% per

<PAGE>

                                      -23-


annum of the then outstanding principal balance of such mortgage loans in the
first month of the life of the mortgage loans and an additional approximate
1.09% (precisely 12/11 multiplied by 1.00%) per annum in each month thereafter
until the twelfth month. Beginning in the twelfth month and in each month
thereafter during the life of the mortgage loans, a 100% Prepayment Assumption
assumes a constant prepayment rate of 16% per annum each month.

              "Prepayment Distribution Percentage": With respect to any
Distribution Date and each Class of Class M Certificates and Class B
Certificates, under the applicable circumstances set forth below, the respective
percentages set forth below:

       (i)    For any Distribution Date on which any Class of Class M or Class B
              Certificates are outstanding:

                     (a) in the case of the Class of Class M Certificates then
              outstanding with the lowest numerical designation, or in the event
              the Class M Certificates are no longer outstanding, the Class of
              Class B Certificates then outstanding with the lowest numerical
              designation and each other Class of Class M Certificates and Class
              B Certificates for which the related Prepayment Distribution
              Trigger has been satisfied, a fraction, expressed as a percentage,
              the numerator of which is the Certificate Principal Balance of
              such Class immediately prior to such date and the denominator of
              which is the sum of the Certificate Principal Balances immediately
              prior to such date of (1) the Class of Class M Certificates then
              outstanding with the lowest numerical designation, or in the event
              the Class M Certificates are no longer outstanding, the Class of
              Class B Certificates then outstanding with the lowest numerical
              designation and (2) all other Classes of Class M Certificates and
              Class B Certificates for which the respective Prepayment
              Distribution Triggers have been satisfied; and

                     (b) in the case of each other Class of Class M Certificates
              and Class B Certificates for which the Prepayment Distribution
              Triggers have not been satisfied, 0%; and

              (ii) Notwithstanding the foregoing, if the application of the
       foregoing percentages on any Distribution Date as provided in Section
       4.01 (determined without regard to the proviso to the definition of
       "Subordinate Principal Distribution Amount") would result in a
       distribution in respect of principal of any Class or Classes of Class M
       Certificates and Class B Certificates in an amount greater than the
       remaining Certificate Principal

<PAGE>
                                      -24-


       Balance thereof (any such class, a "Maturing Class"), then: (a) the
       Prepayment Distribution Percentage of each Maturing Class shall be
       reduced to a level that, when applied as described above, would exactly
       reduce the Certificate Principal Balance of such Class to zero; (b) the
       Prepayment Distribution Percentage of each other Class of Class M
       Certificates and Class B Certificates (any such Class, a "Non-Maturing
       Class") shall be recalculated in accordance with the provisions in
       paragraph (i) above, as if the Certificate Principal Balance of each
       Maturing Class had been reduced to zero (such percentage as recalculated,
       the "Recalculated Percentage"); (c) the total amount of the reductions in
       the Prepayment Distribution Percentages of the Maturing Class or Classes
       pursuant to clause (a) of this sentence, expressed as an aggregate
       percentage, shall be allocated among the Non-Maturing Classes in
       proportion to their respective Recalculated Percentages (the portion of
       such aggregate reduction so allocated to any Non-Maturing Class, the
       "Adjustment Percentage"); and (d) for purposes of such Distribution Date,
       the Prepayment Distribution Percentage of each Non-Maturing Class shall
       be equal to the sum of (1) the Prepayment Distribution Percentage
       thereof, calculated in accordance with the provisions in paragraph (i)
       above as if the Certificate Principal Balance of each Maturing Class had
       not been reduced to zero, plus (2) the related Adjustment Percentage.

              "Prepayment Distribution Trigger": The Class M-2 Prepayment
Distribution Trigger, Class M-3 Prepayment Distribution Trigger, Class B-1
Prepayment Distribution Trigger, Class B-2 Prepayment Distribution Trigger or
Class B-3 Prepayment Distribution Trigger.

              "Prepayment Interest Shortfall": As to any Distribution Date and
any Mortgage Loan (other than a Mortgage Loan relating to an REO Property) that
was the subject of (a) a Principal Prepayment in Full during the related
Prepayment Period, an amount equal to the excess of one month's interest at the
Net Mortgage Rate on the Stated Principal Balance of such Mortgage Loan over the
amount of interest (adjusted to the Net Mortgage Rate) paid by the Mortgagor for
such Prepayment Period to the date of such Principal Prepayment in Full or (b) a
Curtailment during the prior calendar month, an amount equal to one month's
interest at the Net Mortgage Rate on the amount of such Curtailment.

              "Prepayment Period": As to any Distribution Date, the calendar
month preceding the month in which such Distribution Date occurs.

              "Primary Hazard Insurance Policy": Each primary hazard insurance
policy required to be maintained pursuant to Section 3.13.

<PAGE>

                                      -25-


              "Primary Insurance Policy": Any primary policy of mortgage
guaranty insurance other than the CMAC PMI Policies, or any replacement policy
therefor providing coverage for certain Mortgage Loans included in the Trust
Fund with Loan-to-Value Ratios in excess of 80.00%.

              "Principal Prepayment": Any payment of principal made by the
Mortgagor on a Mortgage Loan which is received in advance of its scheduled Due
Date and which is not accompanied by an amount of interest representing
scheduled interest due on any date or dates in any month or months subsequent to
the month of prepayment.

              "Principal Prepayment in Full": Any Principal Prepayment made by a
Mortgagor of the entire Principal Balance of the Mortgage Loan.

              "Purchase Price": With respect to any Mortgage Loan (or REO
Property) required to be purchased pursuant to Section 2.02, 2.04 or 3.14 or
that the Master Servicer is entitled to repurchase pursuant to Section 3.24, an
amount equal to the sum of (i) 100% of the Stated Principal Balance thereof,
(ii) unpaid accrued interest (or REO Imputed Interest) at the applicable Net
Mortgage Rate on the Stated Principal Balance thereof outstanding during each
Due Period that such interest was not paid or advanced, from the date through
which interest was last paid by the Mortgagor or advanced and distributed to
Certificateholders together with unpaid Master Servicing Fees, Servicing Fees,
Trustee's Fees and, if such Mortgage Loan is a CMAC Insured Loan, fees due CMAC
at the related CMAC PMI Policy Rate, from the date through which interest was
last paid by the Mortgagor, in each case to the first day of the month in which
such Purchase Price is to be distributed, plus (iii) the aggregate of all
Advances made in respect thereof that were not previously reimbursed.

              "Qualified Insurer": Any insurance company duly qualified as such
under the laws of the state or states in which the related Mortgaged Property or
Mortgaged Properties is or are located, duly authorized and licensed in such
state or states to transact the type of insurance business in which it is
engaged and approved as an insurer by the Master Servicer, so long as the claims
paying ability of which is acceptable to the Rating Agencies for pass-through
certificates having the same rating as the Certificates rated by the Rating
Agencies as of the Closing Date.

              "Qualified Substitute Mortgage Loan": A Mortgage Loan substituted
by the Depositor for a Deleted Mortgage Loan which must, on the date of such
substitution, as confirmed in an Officers' Certificate delivered to the Trustee,
(i) have an outstanding principal balance, after deduction of the principal
portion of the monthly payment due in the month of substitution (or in the case
of a substitution of more than one Mortgage Loan for a Deleted Mortgage Loan, an
aggregate outstanding principal balance, after such deduction), not in excess of
the Stated Principal Balance of the Deleted Mortgage Loan (the amount of any
shortfall to be

<PAGE>

                                      -26-


paid to the Master Servicer for deposit in the Custodial Account in the month of
substitution); (ii) have a Mortgage Rate and a Net Mortgage Rate no lower than
and not more than 1% per annum higher than the Mortgage Rate and Net Mortgage
Rate, respectively, of the Deleted Mortgage Loan as of the date of substitution;
(iii) have a Loan-to-Value Ratio at the time of substitution no higher than that
of the Deleted Mortgage Loan at the time of substitution; (iv) have a remaining
term to stated maturity not greater than (and not more than one year less than)
that of the Deleted Mortgage Loan; (v) comply with each representation and
warranty set forth in Section 2.04 hereof; (vi) have a Pool Strip Rate equal to
or greater than that of the Deleted Mortgage Loan. Notwithstanding any other
provisions herein; (vii) in the event that the "Pool Strip Rate" of any
Qualified Substitute Mortgage Loan as calculated pursuant to the definition of
"Pool Strip Rate" is greater than the Pool Strip Rate of the related Deleted
Mortgage Loan the excess of the Pool Strip Rate on such Qualified Substitute
Mortgage Loan as calculated pursuant to the definition of "Pool Strip Rate" over
the Pool Strip Rate on the related Deleted Mortgage Loan shall be payable to the
Class R Certificates pursuant to Section 4.01 hereof and, (viii) comply with
each representation and warranty set forth in the Mortgage Loan Purchase
Agreement.

              "Rating Agency": Standard & Poor's and DCR or each of their
successors. If such agencies and their successors are no longer in existence,
"Rating Agency" shall be such nationally recognized statistical rating agency,
or other comparable Person, designated by the Depositor, notice of which
designation shall be given to the Trustee and Master Servicer. References herein
to the two highest long term debt rating categories of a Rating Agency shall
mean "AA" or better in the case of DCR, and "AA" or better in the case of
Standard & Poor's and references herein to the highest short-term debt rating of
a Rating Agency shall mean "A-1+" in the case of Standard & Poor's, and "D-1+"
in the case of DCR, and in the case of any other Rating Agency such references
shall mean such rating categories without regard to any plus or minus.

              "Realized Loss": With respect to each Mortgage Loan or REO
Property as to which a Cash Liquidation or REO Disposition has occurred, an
amount (not less than zero) equal to (i) the Stated Principal Balance of the
Mortgage Loan as of the date of Cash Liquidation or REO Disposition, plus (ii)
interest (and REO Imputed Interest, if any) at the Net Mortgage Rate from the
Due Date as to which interest was last paid or advanced to Certificateholders up
to the date of the Cash Liquidation or REO Disposition on the Stated Principal
Balance of such Mortgage Loan outstanding during each Due Period that such
interest was not paid or advanced, minus (iii) the proceeds, if any, received
during the month in which such Cash Liquidation or REO Disposition occurred, to
the extent applied as recoveries of interest at the Net Mortgage Rate and to
principal of the Mortgage Loan, net of the portion thereof reimbursable to the
Master Servicer or any Sub-Servicer with respect to related Advances not
previously reimbursed. With respect to each Mortgage Loan which has become the
subject of a Deficient Valuation, the difference between the principal balance
of the Mortgage Loan

<PAGE>

                                      -27-


outstanding immediately prior to such Deficient Valuation and the principal
balance of the Mortgage Loan as reduced by the Deficient Valuation.

              "Record Date": The last Business Day of the month immediately
preceding the month of the related Distribution Date.

              "Regular Certificate": Any of the Certificates other than a
Residual Certificate.

              "Relief Act": The Soldiers' and Sailors' Civil Relief Act of 1940,
as amended.

              "REMIC": A "real estate mortgage investment conduit" within the
meaning of Section 860D of the Code.

              "REMIC Provisions": Provisions of the federal income tax law
relating to real estate mortgage investment conduits, which appear at Sections
860A through 860G of Subchapter M of Chapter 1 of the Code, and related
provisions, and proposed, temporary and final regulations and published rulings,
notices and announcements promulgated thereunder, as the foregoing may be in
effect from time to time.

              "Remittance Report": A report prepared by the Master Servicer
providing the information set forth in Exhibit E attached hereto.

              "REO Acquisition": The acquisition by the Master Servicer on
behalf of the Trustee for the benefit of the Certificateholders of any REO
Property pursuant to Section 3.15.

              "REO Disposition": The receipt by the Master Servicer of Insurance
Proceeds, Liquidation Proceeds and other payments and recoveries (including
proceeds of a final sale) which the Master Servicer expects to be finally
recoverable from the sale or other disposition of the REO Property.

              "REO Imputed Interest": As to any REO Property, for any period, an
amount equivalent to interest (at the Mortgage Rate that would have been
applicable to the related Mortgage Loan had it been outstanding) on the unpaid
principal balance of the Mortgage Loan as of the date of acquisition thereof (as
such balance is reduced pursuant to Section 3.15 by any income from the REO
Property treated as a recovery of principal).

              "REO Proceeds": Proceeds, net of directly related expenses,
received in respect of any REO Property (including, without limitation, proceeds
from the rental

<PAGE>

                                      -28-

of the related Mortgaged Property and of any REO Disposition), which proceeds
are required to be deposited into the Custodial Account as and when received.

              "REO Property": A Mortgaged Property acquired by the Master
Servicer on behalf of the Trust Fund through foreclosure or deed-in-lieu of
foreclosure in connection with a defaulted Mortgage Loan.

              "Request for Release": A release signed by a Servicing Officer, in
the form of Exhibits F-1 or F-2 attached hereto.

              "Residual Certificate": The Class R Certificates.

              "Responsible Officer": When used with respect to the Trustee, the
Chairman or Vice Chairman of the Board of Directors or Trustees, the Chairman or
Vice Chairman of the Executive or Standing Committee of the Board of Directors
or Trustees, the President, the Chairman of the Committee on Trust Matters, any
vice president, any assistant vice president, the Secretary, any assistant
secretary, the Treasurer, any assistant treasurer, the Cashier, any assistant
cashier, any trust officer or assistant trust officer, the Controller and any
assistant controller or any other officer of the Trustee customarily performing
functions similar to those performed by any of the above designated officers and
also, with respect to a particular matter, any other officer to whom such matter
is referred because of such officer's knowledge of and familiarity with the
particular subject.

              "Seller": Impac Funding Corporation, or its successor in interest.

              "Senior Accelerated Distribution Percentage": With respect to any
Distribution Date, the percentage indicated below:

                                              Senior Accelerated
Distribution Date                   Distribution Percentage
- -----------------------------------------------------------

October 1998 through
  September 2003                    100%

October 2003 through                Senior Percentage, plus 70% of
  September 2004                            the Subordinate Percentage

October 2004 through                Senior Percentage, plus 60% of
  September 2005                           the Subordinate Percentage

October 2005 through                Senior Percentage, plus 40% of


<PAGE>

                                      -29-


  September 2006                           the Subordinate Percentage

October 2006 through                Senior Percentage, plus 20% of
  September 2007                           the Subordinate Percentage

October 2007 and               Senior Percentage,
  thereafter

provided, however, (i) that any scheduled reduction to the Senior Accelerated
Distribution Percentage described above shall not occur as of any Distribution
Date unless either (a)(1)(x) the outstanding principal balance of Mortgage Loans
delinquent 60 days or more (including foreclosure and REO Property) averaged
over the last six months as a percentage of the aggregate outstanding
Certificate Principal Balance of the Class M Certificates and the Class B
Certificates, is less than 50%, or (y) the outstanding principal balance of
Mortgage Loans delinquent 60 days or more (including foreclosure and REO
Property) averaged over the last six months, as a percentage of the aggregate
outstanding principal balance of all Mortgage Loans averaged over the last six
months, does not exceed 2% and (2) Realized Losses on the Mortgage Loans to date
for such Distribution Date if occurring during the sixth, seventh, eighth, ninth
or tenth year (or any year thereafter) after the Closing Date are less than 30%,
35%, 40%, 45% or 50%, respectively, of the sum of the Initial Certificate
Principal Balances of the Class M Certificates and Class B Certificates or (b)
(1) the aggregate outstanding principal balance of the Mortgage Loans delinquent
60 days or more (including foreclosure and REO Property) averaged over the last
six months, as a percentage of the aggregate outstanding principal balance of
all Mortgage Loans averaged over the last six months, does not exceed 4% and (2)
Realized Losses on the Mortgage Loans on or prior to such Distribution Date are
less than 10% of the sum of the Initial Certificate Principal Balances of the
Class M Certificates and Class B Certificates and (ii) that for any Distribution
Date on which the Senior Percentage is greater than the Original Senior
Percentage, the Senior Accelerated Distribution Percentage for such Distribution
Date shall be 100%. Notwithstanding the foregoing, upon the reduction of the
aggregate Certificate Principal Balance of the Class A Certificates and the
Class R Certificates to zero, the Senior Accelerated Distribution Percentage
will equal 0%.

              "Senior Interest Distribution Amount": As defined in Section
4.01(c)(i).

              "Senior Percentage": As of any Distribution Date, the lesser of
100% and a fraction, expressed as a percentage, the numerator of which is the
aggregate Certificate Principal Balance of the Class A Certificates (other than
the Variable Strip Certificates) and Class R Certificates immediately prior to
such Distribution Date and the denominator of which is the aggregate Stated
Principal Balance of all of the Mortgage Loans or related REO Properties
immediately prior to such Distribution Date.

<PAGE>

                                      -30-


              "Senior Principal Distribution Amount": As to any Distribution
Date, the lesser of (a) the balance of the Available Distribution Amount
remaining after the distribution of all amounts required to be distributed
pursuant to Section 4.01(c)(i) and (b) the sum of the amounts required to be
distributed to the Class A Certificates and Class R Certificates on such
Distribution Date pursuant to Section 4.01(c)(ii), (xv) and (xvi).

              "Servicing Account": The account or accounts created and
maintained pursuant to Section 3.09.

              "Servicing Advances": All customary, reasonable and necessary "out
of pocket" costs and expenses incurred in connection with a default, delinquency
or other unanticipated event in the performance by the Master Servicer of its
servicing obligations, including, but not limited to, the cost of (i) the
preservation, restoration and protection of a Mortgaged Property, (ii) any
enforcement or judicial proceedings, including foreclosures, (iii) the
management and liquidation of any REO Property and (iv) compliance with the
obligations under the second paragraph of Section 3.01, Section 3.09 and Section
3.13.

              "Servicing Fees": As to each Mortgage Loan, an amount, payable out
of any payment of interest on the Mortgage Loan, equal to interest at the
Servicing Fee Rate on the Stated Principal Balance of such Mortgage Loan for the
calendar month preceding the month in which the payment is due (alternatively,
in the event such payment of interest accompanies a Principal Prepayment in full
made by the Mortgagor, interest for the number of days covered by such payment
of interest).

              "Servicing Fee Rate": With respect to each Mortgage Loan, the per
annum rate of 0.25%.

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

              "Single Certificate": A Certificate of any Class evidencing an
Initial Certificate Principal Balance of $1,000.

              "Special Hazard Amount": As of any Distribution Date, an amount
equal to $2,976,216 (the initial "Special Hazard Amount") minus the sum of (i)
the aggregate amount of Special Hazard Losses allocated solely to one or more
Classes of Certificates in accordance with Section 4.04 and (ii) the Adjustment
Amount (as defined below) as most recently calculated. For each Anniversary, the
Adjustment Amount shall be calculated and shall be equal to the amount, if any,
by which the amount calculated in accordance with the preceding sentence
(without giving

<PAGE>

                                      -31-


effect to the deduction of the Adjustment Amount for such Anniversary) exceeds
the greatest of (i) twice the outstanding principal balance of the Mortgage Loan
in the Trust Fund which has the largest outstanding principal balance on the
Distribution Date immediately preceding such anniversary, (ii) the product of
1.00% multiplied by the outstanding principal balance of all Mortgage Loans on
the Distribution Date immediately preceding such anniversary and (iii) the
aggregate outstanding principal balance (as of the immediately preceding
Distribution Date) of the Mortgage Loans in any single five-digit California zip
code area with the largest amount of Mortgage Loans by aggregate principal
balance as of such anniversary and (B) the greater of (i) the product of 0.50%
multiplied by the outstanding principal balance of all Mortgage Loans on the
Distribution Date immediately preceding such anniversary multiplied by a
fraction, the numerator of which is equal to the aggregate outstanding principal
balance (as of the immediately preceding Distribution Date) of all of the
Mortgage Loans secured by Mortgaged Properties located in the State of
California divided by the aggregate outstanding principal balance (as of the
immediately preceding Distribution Date) of all of the Mortgage Loans, expressed
as a percentage, and the denominator of which is equal to 34.71% (which
percentage is equal to the percentage of Mortgage Loans initially secured by
Mortgaged Properties located in the State of California) and (ii) the aggregate
outstanding principal balance (as of the immediately preceding Distribution
Date) of the largest Mortgage Loan secured by a Mortgaged Property located in
the State of California.

              The Special Hazard Amount may be further reduced by the Master
Servicer (including accelerating the manner in which coverage is reduced)
provided that prior to any such reduction, the Master Servicer shall (i) obtain
written confirmation from each Rating Agency that such reduction shall not
reduce the rating assigned to any Class of Certificates by such Rating Agency
below the lower of the then-current rating or the rating assigned to such
Certificates as of the Closing Date by such Rating Agency and (ii) provide a
copy of such written confirmation to the Trustee.

              "Special Hazard Loss": Any Realized Loss not in excess of the cost
of the lesser of repair or replacement of a Mortgaged Property suffered by such
Mortgaged Property on account of direct physical loss, exclusive of (i) any loss
of a type covered by a hazard policy or a flood insurance policy required to be
maintained in respect of such Mortgaged Property pursuant to Section 3.12(a),
except to the extent of the portion of such loss not covered as a result of any
coinsurance provision and (ii) any Extraordinary Loss.

              "Special Hazard Percentage": As of each Anniversary, the greater
of (i) 1.00% and (ii) the largest percentage obtained by dividing the aggregate
outstanding principal balance (as of the immediately preceding Distribution
Date) of the Mortgage Loans secured by Mortgaged Properties located in a single,
five-digit zip code area in the State of California by the outstanding principal
balance of all the Mortgage Loans as of such immediately preceding Distribution
Date.

<PAGE>

                                      -32-


              "Standard & Poor's": Standard & Poor's, a division of The McGraw
Hill Companies, Inc., or its successor in interest.

              "Startup Day": The day designated as such pursuant to Article X
hereof.

              "Stated Principal Balance": With respect to any Mortgage Loan or
related REO Property at any given time, (i) the principal balance of the
Mortgage Loan outstanding as of the Cut-off Date, after application of principal
payments due on or before such date, whether or not received, minus (ii) the sum
of (a) the principal portion of the Monthly Payments due with respect to such
Mortgage Loan or REO Property during each Due Period ending prior to the most
recent Distribution Date which were received or with respect to which an Advance
was made, and (b) all Principal Prepayments with respect to such Mortgage Loan
or REO Property, and all Insurance Proceeds, Liquidation Proceeds and net income
from a REO Property to the extent applied by the Master Servicer as recoveries
of principal in accordance with Section 3.15 with respect to such Mortgage Loan
or REO Property, which were distributed pursuant to Section 4.01 on any previous
Distribution Date, and (c) any Realized Loss with respect thereto allocated
pursuant to Section 4.04 for any previous Distribution Date.

              "Subordinate Certificate": Any of the Class M, Class B-1, Class
B-2 or Class B-3 Certificates.

              "Subordinate Percentage": As of any date of determination, a
percentage equal to 100% minus Senior Percentage as of such date.

              "Subordinate Principal Distribution Amount": With respect to any
Distribution Date and each Class of Class M Certificates and Class B
Certificates, (a) the sum of (i) the product of (x) the related Class M
Percentage or Class B Percentage for such Class and (y) the aggregate of the
amounts calculated for such Distribution Date under clauses (1), (2) and (3) of
Section 4.01(c)(ii)(A) without giving effect to the Senior Percentage; (ii) such
Class's pro rata share, based on the Certificate Principal Balance of each Class
of Class M Certificates and Class B Certificates then outstanding, of the
principal collections described in Section 4.01(c)(ii)(B)(b) (without giving
effect to the Senior Accelerated Distribution Percentage), to the extent such
collections are not otherwise distributed to the Senior Certificates; (iii) the
product of (x) the related Prepayment Distribution Percentage and (y) the
aggregate of all Principal Prepayments in Full and Curtailments received in the
related Prepayment Period to the extent not payable to the Senior Certificates;
and (iv) any amounts described in clauses (i), (ii) and (iii) as determined for
any previous Distribution Date, that remain undistributed to the extent that
such amounts are not attributable to Realized Losses which have been allocated
to a subordinate Class of Class M or Class B Certificates; PROVIDED, HOWEVER,
that such amount shall in no event exceed the outstanding Certificate Principal
Balance of such Class of Certificates immediately prior to such date.

<PAGE>

                                      -33-


              "Sub-Servicer": Any Person with which the Master Servicer has
entered into a Sub-Servicing Agreement and which meets the qualifications of a
Sub-Servicer pursuant to Section 3.02.

              "Sub-Servicer Remittance Date": The 18th day of each month, or if
such day is not a Business Day, the immediately preceding Business Day.

              "Sub-Servicing Account": An account established by a Sub-Servicer
which meets the requirements set forth in Section 3.08 and is otherwise
acceptable to the Master Servicer.

              "Sub-Servicing Agreement": The written contract between the Master
Servicer and a Sub-Servicer and any successor Sub-Servicer relating to servicing
and administration of certain Mortgage Loans as provided in Section 3.02.

              "Tax Returns": The federal income tax return on Internal Revenue
Service Form 1066, U.S. Real Estate Mortgage Investment Conduit Income Tax
Return, including Schedule Q thereto, Quarterly Notice to Residual Interest
Holders of REMIC Taxable Income or Net Loss Allocation, or any successor forms,
to be filed on behalf of the REMIC due to their classification as a REMIC under
the REMIC Provisions, together with any and all other information, reports or
returns that may be required to be furnished to the Certificateholders or filed
with the Internal Revenue Service or any other governmental taxing authority
under any applicable provisions of federal, state or local tax laws.

              "Transfer": Any direct or indirect transfer, sale, pledge,
hypothecation or other form of assignment of any Ownership Interest in a
Certificate.

              "Transferor": Any Person who is disposing by Transfer of any
Ownership Interest in a Certificate.

              "Trustee": Bankers Trust Company of California, N.A., or its
successor in interest, or any successor trustee appointed as herein provided.

              "Trustee's Fee": As to each Mortgage Loan and Distribution Date,
an amount, payable out of any payment or advance of interest on the Mortgage
Loan, equal to interest at the Trustee Fee Rate on the Stated Principal Balance
of such Mortgage Loan as of the Due Date immediately preceding the month in
which such Distribution Date occurs.

              "Trustee Fee Rate": With respect to each Mortgage Loan, the per
annum rate of 0.0125%.

<PAGE>

                                      -34-


              "Trust Fund": The segregated pool of assets, with respect to which
a REMIC election is to be made, consisting of: (i) each Mortgage Loan (exclusive
of payments of principal and interest due on or before the Cut-off Date, if any,
received by the Master Servicer which shall not constitute an asset of the Trust
Fund) as from time to time are subject to this Agreement and all payments under
and proceeds of such Mortgage Loans (exclusive of any prepayment fees and late
payment charges received on the Mortgage Loans), together with all documents
included in the related Mortgage File, subject to Section 2.01; (ii) such funds
or assets as from time to time are deposited in the Custodial Account or the
Certificate Account and belonging to the Trust Fund; (iii) any REO Property;
(iv) the Primary Hazard Insurance Policies, if any, the Primary Insurance
Policies, if any, and all other Insurance Policies with respect to the Mortgage
Loans; and (v) the Depositor's interest in respect of the representations and
warranties made by the Seller in the Mortgage Loan Purchase Agreement as
assigned to the Trustee pursuant to Section 2.04 hereof.

              "Uninsured Cause": Any cause of damage to property subject to a
Mortgage such that the complete restoration of such property is not fully
reimbursable by the hazard insurance policies or flood insurance policies
required to be maintained pursuant to Section 3.13.

              "United States Person": A citizen or resident of the United
States, a corporation or a partnership (including an entity treated as a
corporation or partnership for United States federal income tax purposes)
created or organized in, or under the laws of, the United States or any State
thereof or the District of Columbia (except, in the case of a partnership, to
the extent provided in regulations) or an estate whose income is subject to
United States federal income tax regardless of its source, 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 such United States Persons have the
authority to control all substantial decisions of the trust. To the extent
prescribed in regulations by the Secretary of the Treasury, which have not yet
been issued, a trust which was in existence on August 20, 1996 (other than a
trust treated as owned by the grantor under subpart E of part I of subchapter J
of chapter 1 of the Code), and which was treated as a United States person on
August 20, 1996 may elect to continue to be treated as a United States person
notwithstanding the previous sentence.

              "Variable Strip Certificates": Any one of the Class A-3
Certificates.

              "Voting Rights": The portion of the voting rights of all of the
Certificates which is allocated to any Certificate. At all times during the term
of this Agreement, 98% of all of the Voting Rights shall be allocated among
Holders of the Regular Certificates (other than the Class A-3 Certificates) on
the basis of the Certificate Principal Balances thereof, 1% of all Voting Rights
shall be allocated to the Holders of the Class A-3 Certificates, and the Holders

<PAGE>

                                      -35-


of the Class R Certificates shall be entitled to 1% of all of the Voting Rights,
allocated among the Certificates of each such Class in accordance with their
respective Percentage Interests. The Excess Servicing Strip shall have no Voting
Rights.


                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS;
                        ORIGINAL ISSUANCE OF CERTIFICATES

              SECTION 2.01. Conveyance of Mortgage Loans.

              The Depositor, as of the Closing Date, and concurrently with the
execution and delivery hereof, does hereby assign, transfer, sell, set over and
otherwise convey to the Trustee without recourse all the right, title and
interest of the Depositor in and to the Mortgage Loans identified on the
Mortgage Loan Schedule (exclusive of any prepayment fees and late payment
charges received thereon) and all other assets included or to be included in the
Trust Fund for the benefit of the Certificateholders. Such assignment includes
all principal and interest received by the Master Servicer on or with respect to
the Mortgage Loans (other than payment of principal and interest due on or
before the Cut-off Date).

              In connection with such transfer and assignment, the Depositor has
caused the Seller to deliver to, and deposit with the Trustee, as described in
the Mortgage Loan Purchase Agreement the following documents or instruments:

              (i) the original Mortgage Note, endorsed "Bankers Trust Company of
       California, N.A., as trustee under the Pooling and Servicing Agreement
       relating to Impac Secured Assets Corp., Mortgage Pass-Through
       Certificates, Series 1998-3" with all intervening endorsements showing a
       complete chain of endorsements from the originator to the Person
       endorsing it to the Trustee or, with respect to any Mortgage Loan as to
       which the original Mortgage Note has been permanently lost or destroyed
       and has not been replaced, a Lost Note Affidavit;

              (ii) the original recorded Mortgage or, if the original Mortgage
       has not been returned from the applicable public recording office, a copy
       of the Mortgage certified by the Seller to be a true and complete copy of
       the original Mortgage submitted for recording;

              (iii) a duly executed original Assignment of the Mortgage, without
       recourse, in recordable form to "Bankers Trust Company of 

<PAGE>

                                      -36-


       California, N.A., as trustee," or to "Bankers Trust Company of
       California, N.A., as trustee for holders of Impac Secured Assets Corp.,
       Mortgage Pass-Through Certificates", Series 1998-3;

              (iv) the original recorded Assignment or Assignments of the
       Mortgage showing a complete chain of assignment from the originator
       thereof to the Person assigning it to the Trustee or, if any such
       Assignment has not been returned from the applicable public recording
       office, a copy of such Assignment certified by the Seller to be a true
       and complete copy of the original Assignment submitted to the title
       insurance company for recording;

              (v) the original title insurance policy, or, if such policy has
       not been issued, any one of an original or a copy of the preliminary
       title report, title binder or title commitment on the Mortgaged Property
       with the original policy of the insurance to be delivered promptly
       following the receipt thereof;

              (vi) the original of any assumption, modification, extension or
       guaranty agreement; and

              (vii) the original or a copy of the private mortgage insurance
       policy or original certificate of private mortgage insurance for each
       Mortgage Loan identified on the Mortgage Loan Schedule as having a
       Loan-to-Value Ratio at origination of 80% or greater.

              The Seller is obligated as described in the Mortgage Loan Purchase
Agreement to deliver to the Trustee: (a) either the original recorded Mortgage,
or in the event such original cannot be delivered by the Seller, a copy of such
Mortgage certified as true and complete by the appropriate recording office, in
those instances where a copy thereof certified by the Seller was delivered to
the Trustee pursuant to clause (ii) above; and (b) either the original
Assignment or Assignments of the Mortgage, with evidence of recording thereon,
showing a complete chain of assignment from the originator to the Seller, or in
the event such original cannot be delivered by the Seller, a copy of such
Assignment or Assignments certified as true and complete by the appropriate
recording office, in those instances where copies thereof certified by the
Seller were delivered to the Trustee pursuant to clause (iv) above.
Notwithstanding anything to the contrary contained in this Section 2.01, in
those instances where the public recording office retains the original Mortgage
after it has been recorded, the Seller shall be deemed to have satisfied its
obligations hereunder upon delivery to the Trustee of a copy of such Mortgage
certified by the public recording office to be a true and complete copy of the
recorded original thereof.

<PAGE>

                                      -37-

              If any Assignment is lost or returned unrecorded to the Trustee
because of any defect therein, the Seller is required, as described in the
Mortgage Loan Purchase Agreement, to prepare a substitute Assignment or cure
such defect, as the case may be, and the Seller shall cause such Assignment to
be recorded in accordance with this section.

              The Seller is required as described in the Mortgage Loan Purchase
Agreement to exercise its best reasonable efforts to deliver or cause to be
delivered to the Trustee within 120 days of the Closing Date the original or a
photocopy of the title insurance policy with respect to each Mortgage Loan
assigned to the Trustee pursuant to this Section 2.01.

              All original documents relating to the Mortgage Loans which are
not delivered to the Trustee are and shall be held by the Master Servicer in
trust for the benefit of the Trustee on behalf of the Certificateholders.

              Except as may otherwise expressly be provided herein, neither the
Depositor, the Master Servicer nor the Trustee shall (and the Master Servicer
shall ensure that no Sub-Servicer shall) assign, sell, dispose of or transfer
any interest in the Trust Fund or any portion thereof, or permit the Trust Fund
or any portion thereof to be subject to any lien, claim, mortgage, security
interest, pledge or other encumbrance of, any other Person.

              It is intended that the conveyance of the Mortgage Loans by the
Depositor to the Trustee as provided in this Section be, and be construed as, a
sale of the Mortgage Loans as provided for in this Section 2.01 by the Depositor
to the Trustee for the benefit of the Certificateholders. It is, further, not
intended that such conveyance be deemed a pledge of the Mortgage Loans by the
Depositor to the Trustee to secure a debt or other obligation of the Depositor.
However, in the event that the Mortgage Loans are held to be property of the
Depositor, or if for any reason this Agreement is held or deemed to create a
security interest in the Mortgage Loans, then it is intended that, (a) this
Agreement shall also be deemed to be a security agreement within the meaning of
Articles 8 and 9 of the New York Uniform Commercial Code and the Uniform
Commercial Code of any other applicable jurisdiction; (b) the conveyance
provided for in this Section shall be deemed to be (1) a grant by the Depositor
to the Trustee of a security interest in all of the Depositor's right (including
the power to convey title thereto), title and interest, whether now owned or
hereafter acquired, in and to (A) the Mortgage Loans, including the Mortgage
Notes, the Mortgages, any related Insurance Policies and all other documents in
the related Mortgage Files, (B) all amounts payable to the holders of the
Mortgage Loans in accordance with the terms thereof, and (C) all proceeds of the
conversion, voluntary or involuntary, of the foregoing into cash, instruments,
securities or other property, including without limitation all amounts from time
to time held or invested in the Certificate Account or the Custodial Account,
whether in the form of cash, instruments, securities or other property and (2)
an assignment by the Depositor to the Trustee of any security interest in any
and all of the Seller's right (including the power to convey title thereto),
title and interest, whether now owned or

<PAGE>

                                      -38-


hereafter acquired, in and to the property described in the foregoing clauses
(1)(A) through (C); (c) the possession by the Trustee or its agent of Mortgage
Notes and such other items of property as constitute instruments, money,
negotiable documents or chattel paper shall be deemed to be "possession by the
secured party" or possession by a purchaser or a person designated by such
secured party, for purposes of perfecting the security interest pursuant to the
New York Uniform Commercial Code and the Uniform Commercial Code of any other
applicable jurisdiction (including, without limitation, Sections 9-115, 9-305,
8-102, 8-301, 8-501 and 8-503 thereof); and (d) notifications to persons holding
such property, and acknowledgments, receipts or confirmations from persons
holding such property, shall be deemed notifications to, or acknowledgments,
receipts or confirmations from, financial intermediaries, bailees or agents (as
applicable) of the Trustee for the purpose of perfecting such security interest
under applicable law. The Depositor and the Trustee shall, to the extent
consistent with this Agreement, take such actions as may be necessary to ensure
that, if this Agreement were deemed to create a security interest in the
Mortgage Loans, such security interest would be deemed to be a perfected
security interest of first priority under applicable law and will be maintained
as such throughout the term of the Agreement.

              SECTION 2.02. Acceptance of the Trust Fund by the Trustee.

              The Trustee acknowledges receipt (subject to any exceptions noted
in the Initial Certification described below), of the documents referred to in
Section 2.01 above and all other assets included in the definition of "Trust
Fund" and declares that it holds and will hold such documents and the other
documents delivered to it constituting the Mortgage Files, and that it holds or
will hold such other assets included in the definition of "Trust Fund" (to the
extent delivered or assigned to the Trustee), in trust for the exclusive use and
benefit of all present and future Certificateholders.

              The Trustee agrees, for the benefit of the Certificateholders, to
review or cause to be reviewed on its behalf, each Mortgage File on or before
the Closing Date to ascertain that all documents required to be delivered to it
are in its possession, and the Trustee agrees to execute and deliver, or cause
to be executed and delivered, to the Depositor and the Master Servicer on the
Closing Date, an Initial Certification in the form annexed hereto as Exhibit C
to the effect that, as to each Mortgage Loan listed in the Mortgage Loan
Schedule (other than any Mortgage Loan paid in full or any Mortgage Loan
specifically identified in such certification as not covered by such
certification), (i) all documents required to be delivered to it pursuant to
this Agreement with respect to such Mortgage Loan are in its possession, (ii)
such documents have been reviewed by it and appear regular on their face and
relate to such Mortgage Loan and (iii) based on its examination and only as to
the foregoing documents, the information set forth in items (i), (ii), (iii)(A)
and (iv) of the definition of the "Mortgage Loan Schedule" accurately reflects
information set forth in the Mortgage File. Neither the Trustee nor the Master
Servicer shall be 

<PAGE>

                                      -39-


under any duty to determine whether any Mortgage File should include any of the
documents specified in clause (vi) or (vii) of Section 2.01. Neither the Trustee
nor the Master Servicer shall be under any duty or obligation to inspect, review
or examine said documents, instruments, certificates or other papers to
determine that the same are genuine, enforceable or appropriate for the
represented purpose or that they have actually been recorded, or they are in
recordable form or that they are other than what they purport to be on their
face.

              Within 90 days of the Closing Date the Trustee shall deliver to
the Depositor and the Master Servicer a Final Certification in the form annexed
hereto as Exhibit D evidencing the completeness of the Mortgage Files, with any
applicable exceptions noted thereon.

              If in the process of reviewing the Mortgage Files and preparing
the certifications referred to above the Trustee finds any document or documents
constituting a part of a Mortgage File to be missing or defective in any
material respect, the Trustee shall promptly notify the Seller, the Master
Servicer and the Depositor. The Trustee shall promptly notify the Seller of such
defect and request that the Seller cure any such defect within 60 days from the
date on which the Seller was notified of such defect, and if the Seller does not
cure such defect in all material respects during such period, request on behalf
of the Certificateholders that the Seller purchase such Mortgage Loan from the
Trust Fund at the Purchase Price within 90 days after the date on which the
Seller was notified of such defect; provided that if such defect would cause the
Mortgage Loan to be other than a "qualified mortgage" as defined in Section
860G(a)(3) of the Code, any such cure or repurchase must occur within 90 days
from the date such breach was discovered. It is understood and agreed that the
obligation of the Seller to cure a material defect in, or purchase any Mortgage
Loan as to which a material defect in a constituent document exists shall
constitute the sole remedy respecting such defect available to
Certificateholders or the Trustee on behalf of Certificateholders. The Purchase
Price for the purchased Mortgage Loan shall be deposited or caused to be
deposited upon receipt by the Master Servicer in the Custodial Account and, upon
receipt by the Trustee of written notification of such deposit signed by a
Servicing Officer, the Trustee shall release or cause to be released to the
Seller the related Mortgage File and shall execute and deliver such instruments
of transfer or assignment, in each case without recourse, as the Seller shall
require as necessary to vest in the Seller ownership of any Mortgage Loan
released pursuant hereto and at such time the Trustee shall have no further
responsibility with respect to the related Mortgage File.

              SECTION 2.03. Representations, Warranties and Covenants of the
                            Master Servicer and the Depositor.

              (a) The Master Servicer hereby represents and warrants to and
covenants with the Depositor and the Trustee for the benefit of
Certificateholders that:

<PAGE>

                                      -40-


              (i) The Master Servicer is, and throughout the term hereof shall
       remain, a corporation duly organized, validly existing and in good
       standing under the laws of the state of its incorporation (except as
       otherwise permitted pursuant to Section 6.02), the Master Servicer is,
       and shall remain, in compliance with the laws of each state in which any
       Mortgaged Property is located to the extent necessary to perform its
       obligations under this Agreement, and the Master Servicer is, and shall
       remain, approved to sell mortgage loans to and service mortgage loans for
       FNMA and FHLMC;

              (ii) The execution and delivery of this Agreement by the Master
       Servicer, and the performance and compliance with the terms of this
       Agreement by the Master Servicer, will not violate the Master Servicer's
       articles of incorporation or bylaws or 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 agreement or other
       instrument to which it is a party or which is applicable to it or any of
       its assets;

              (iii) The Master Servicer has the full power and authority to
       enter into and consummate all transactions contemplated by this
       Agreement, has duly authorized the execution, delivery and performance of
       this Agreement, and has duly executed and delivered this Agreement;

              (iv) This Agreement, assuming due authorization, execution and
       delivery by the Depositor and the Trustee, constitutes a valid, legal and
       binding obligation of the Master Servicer, enforceable against the Master
       Servicer in accordance with the terms hereof, subject to (A) applicable
       bankruptcy, insolvency, reorganization, moratorium and other laws
       affecting the enforcement of creditors' rights generally, and (B) general
       principles of equity, regardless of whether such enforcement is
       considered in a proceeding in equity or at law;

              (v) The Master Servicer is not in violation of, and its execution
       and delivery of this Agreement and its performance and compliance with
       the terms of this Agreement will not constitute a violation of, any law,
       any order or decree of any court or arbiter, or any order, regulation or
       demand of any federal, state or local governmental or regulatory
       authority, which violation is likely to affect materially and adversely
       either the ability of the Master Servicer to perform its obligations
       under this Agreement or the financial condition of the Master Servicer;

              (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 or is likely to affect materially and adversely
       either the ability of the Master Servicer to perform its obligations
       under this Agreement or the financial condition of the Master Servicer;

<PAGE>

                                      -41-


              (vii) The Master Servicer will comply in all material respects in
       the performance of this Agreement with all reasonable rules and
       requirements of each insurer under each Insurance Policy;

              (viii) The execution of this Agreement and the performance of the
       Master Servicer's obligations hereunder do not require any license,
       consent or approval of any state or federal court, agency, regulatory
       authority or other governmental body having jurisdiction over the Master
       Servicer, other than such as have been obtained; and

              (ix) As of the date hereof, no information, certificate of an
       officer, statement furnished in writing or report delivered to the
       Depositor, any affiliate of the Depositor or the Trustee by the Master
       Servicer in its capacity as Master Servicer, to the knowledge of the
       Master Servicer, contains any untrue statement of a material fact.

          It is understood and agreed that the representations, warranties and
covenants set forth in this Section 2.03(a) shall survive the execution and
delivery of this Agreement, and shall inure to the benefit of the Depositor, the
Trustee and the Certificateholders. Upon discovery by the Depositor, the Trustee
or the Master Servicer of a breach of any of the foregoing representations,
warranties and covenants that materially and adversely affects the interests of
the Depositor or the Trustee, the party discovering such breach shall give
prompt written notice to the other parties.

          (b) The Depositor hereby represents and warrants to the Master
Servicer and the Trustee for the benefit of Certificateholders that as of the
Closing Date, the representations and warranties of the Seller with respect to
the Mortgage Loans and the remedies therefor that are contained in the Mortgage
Loan Purchase Agreement are as set forth in Exhibit I hereto.

          It is understood and agreed that the representations and warranties
set forth in this Section 2.03(b) shall survive delivery of the respective
Mortgage Files to the Trustee.

          Upon discovery by either the Depositor, the Master Servicer or the
Trustee of a breach of any representation or warranty set forth in this Section
2.03 which materially and adversely affects the interests of the
Certificateholders in any Mortgage Loan, the party discovering such breach shall
give prompt written notice to the other parties.

          SECTION 2.04. Representations and Warranties of the Seller.

          The Depositor hereby assigns to the Trustee for the benefit of
Certificateholders its interest in respect of the representations and warranties
made by the Seller in the Mortgage Loan Purchase Agreement or the exhibits
thereto. Insofar as the Mortgage Loan Purchase Agreement relates to such
representations and warranties and any remedies provided thereunder for any

<PAGE>

                                      -42-


breach of such representations and warranties, such right, title and interest
may be enforced by the Trustee on behalf of the Certificateholders. Upon the
discovery by the Depositor, the Master Servicer or the Trustee of a breach of
any of the representations and warranties made in the Mortgage Loan Purchase
Agreement in respect of any Mortgage Loan which materially and adversely affects
the interests of the Certificateholders in such Mortgage Loan, the party
discovering such breach shall give prompt written notice to the other parties.
The Trustee shall promptly notify the Seller of such breach and request that the
Seller shall, within 90 days from the date that the Seller was notified or
otherwise obtained knowledge of such breach, either (i) cure such breach in all
material respects or (ii) purchase such Mortgage Loan from the Trust Fund at the
Purchase Price and in the manner set forth in Section 2.02; provided that if
such breach would cause the Mortgage Loan to be other than a "qualified
mortgage" as defined in Section 860G(a)(3) of the Code, any such cure or
repurchase must occur within 90 days from the date such breach was discovered.
However, in the case of a breach under the Mortgage Loan Purchase Agreement,
subject to the approval of the Depositor the Seller shall have the option to
substitute a Qualified Substitute Mortgage Loan or Loans for such Mortgage Loan
if such substitution occurs within two years following the Closing Date, except
that if the breach would cause the Mortgage Loan to be other than a "qualified
mortgage" as defined in Section 860G(a)(3) of the Code, any such substitution
must occur within 90 days from the date the breach was discovered if such 90 day
period expires before two years following the Closing Date. In the event that
the Seller elects to substitute a Qualified Substitute Mortgage Loan or Loans
for a Deleted Mortgage Loan pursuant to this Section 2.04, the Seller shall
deliver to the Trustee for the benefit of the Certificateholders with respect to
such Qualified Substitute Mortgage Loan or Loans, the original Mortgage Note,
the Mortgage, an Assignment of the Mortgage in recordable form, and such other
documents and agreements as are required by Section 2.01, with the Mortgage Note
endorsed as required by Section 2.01. No substitution will be made in any
calendar month after the Determination Date for such month. Monthly Payments due
with respect to Qualified Substitute Mortgage Loans in the month of substitution
shall not be part of the Trust Fund and will be retained by the Master Servicer
and remitted by the Master Servicer to the Seller on the next succeeding
Distribution Date. For the month of substitution, distributions to
Certificateholders will include the Monthly Payment due on a Deleted Mortgage
Loan for such month and thereafter the Seller shall be entitled to retain all
amounts received in respect of such Deleted Mortgage Loan. The Depositor shall
amend or cause to be amended the Mortgage Loan Schedule for the benefit of the
Certificateholders to reflect the removal of such Deleted Mortgage Loan and the
substitution of the Qualified Substitute Mortgage Loan or Loans and the
Depositor shall deliver the amended Mortgage Loan Schedule to the Trustee. Upon
such substitution, the Qualified Substitute Mortgage Loan or Loans shall be
subject to the terms of this Agreement in all respects, the Seller shall be
deemed to have made the representations and warranties with respect to the
Qualified Substitute Mortgage Loan contained in the Mortgage Loan Purchase
Agreement as of the date of substitution, and the Depositor shall be deemed to
have made with respect to any Qualified Substitute Mortgage Loan or Loans, as of
the date of substitution, the representations and warranties set forth in
Section 2.03 hereof.

<PAGE>

                                      -43-


          In connection with the substitution of one or more Qualified
Substitute Mortgage Loans for one or more Deleted Mortgage Loans, the Master
Servicer will determine the amount (if any) by which the aggregate principal
balance of all such Qualified Substitute Mortgage Loans as of the date of
substitution is less than the aggregate Stated Principal Balance of all such
Deleted Mortgage Loans (in each case after application of the principal portion
of the Monthly Payments due in the month of substitution that are to be
distributed to Certificateholders in the month of substitution). The Seller
shall provide the Master Servicer on the day of substitution for immediate
deposit into the Custodial Account the amount of such shortfall, without any
reimbursement therefor. The Seller shall give notice in writing to the Trustee
of such event, which notice shall be accompanied by an Officers' Certificate as
to the calculation of such shortfall and by an Opinion of Counsel to the effect
that such substitution will not cause (a) any federal tax to be imposed on the
REMIC, including without limitation, any federal tax imposed on "prohibited
transactions" under Section 860F(a)(1) of the Code or on "contributions after
the startup date" under Section 860G(d)(1) of the Code or (b) any portion of the
REMIC to fail to qualify as a REMIC at any time that any Certificate is
outstanding. The costs of any substitution as described above, including any
related assignments, opinions or other documentation in connection therewith
shall be borne by the Seller.

          Except as expressly set forth herein neither the Trustee nor the
Master Servicer is under any obligation to discover any breach of the above
mentioned representations and warranties. It is understood and agreed that the
obligation of the Seller to cure such breach, purchase or to substitute for such
Mortgage Loan as to which such a breach has occurred and is continuing shall
constitute the sole remedy respecting such breach available to
Certificateholders or the Trustee on behalf of Certificateholders.

          SECTION 2.05. Issuance of Certificates Evidencing Interests in the
                        Trust Fund.

          The Trustee acknowledges the assignment to it of the Mortgage Loans
and the delivery of the Mortgage Files to it, subject to any exceptions noted
pursuant to Section 2.02 above, together with the assignment to it of all other
assets included in the Trust Fund, receipt of which is hereby acknowledged.
Concurrently with such delivery and in exchange therefor, the Trustee, pursuant
to the written request of the Depositor, executed by an officer of the
Depositor, has executed and caused to be authenticated and delivered to, or upon
the order of, the Depositor the Certificates in authorized denominations which
evidence ownership of the Trust Fund.

<PAGE>

                                      -44-


                                   ARTICLE III

                          ADMINISTRATION AND SERVICING
                                OF THE TRUST FUND

          SECTION 3.01. Master Servicer to Act as Master Servicer.

          The Master Servicer shall supervise, or take such actions as are
necessary to ensure, the servicing and administration of the Mortgage Loans and
any REO Property in accordance with this Agreement and its normal servicing
practices, which generally shall conform to the standards of an institution
prudently servicing mortgage loans for its own account and shall have full
authority to do anything it reasonably deems appropriate or desirable in
connection with such servicing and administration. The Master Servicer may
perform its responsibilities relating to servicing through other agents or
independent contractors, but shall not thereby be released from any of its
responsibilities as hereinafter set forth. The authority of the Master Servicer,
in its capacity as master servicer, and any Sub-Servicer acting on its behalf,
shall include, without limitation, the power to (i) consult with and advise any
Sub-Servicer regarding administration of a related Mortgage Loan, (ii) approve
any recommendation by a Sub-Servicer to foreclose on a related Mortgage Loan,
(iii) supervise the filing and collection of insurance claims and take or cause
to be taken such actions on behalf of the insured Person thereunder as shall be
reasonably necessary to prevent the denial of coverage thereunder, and (iv)
effectuate foreclosure or other conversion of the ownership of the Mortgaged
Property securing a related Mortgage Loan, including the employment of
attorneys, the institution of legal proceedings, the collection of deficiency
judgments, the acceptance of compromise proposals, the filing of claims under
any Primary Insurance Policy and any other matter pertaining to a delinquent
Mortgage Loan. The authority of the Master Servicer shall include, in addition,
the power on behalf of the Certificateholders, the Trustee or any of them to (i)
execute and deliver customary consents or waivers and other instruments and
documents, (ii) consent to transfer of any related Mortgaged Property and
assumptions of the related Mortgage Notes and Security Instruments (in the
manner provided in this Agreement) and (iii) collect any Insurance Proceeds and
Liquidation Proceeds. Without limiting the generality of the foregoing, the
Master Servicer and any Sub-Servicer acting on its behalf may, and is hereby
authorized, and empowered by the Trustee to, execute and deliver, on behalf of
itself, the Certificateholders or the Trustee or any of them, any instruments of
satisfaction, cancellation, partial or full release, discharge and all other
comparable instruments, with respect to the related Mortgage Loans, the
Insurance Policies and the accounts related thereto, and the Mortgaged
Properties. The Master Servicer may exercise this power in its own name or in
the name of a Sub-Servicer.

          In accordance with the standards of the preceding paragraph, the
Master Servicer shall advance or cause to be advanced funds as necessary for the
purpose of effecting the payment

<PAGE>

                                      -45-


of taxes and assessments on the Mortgaged Properties, which advances shall be
reimbursable in the first instance from related collections from the Mortgagors
pursuant to Section 3.09, and further as provided in Section 3.11; provided that
the Master Servicer shall not be obligated to make such advance if, in its good
faith judgment, the Master Servicer determines that such advance to be a
Nonrecoverable Advance. No costs incurred by the Master Servicer or by
Sub-Servicers in effecting the payment of taxes and assessments on the Mortgaged
Properties shall, for the purpose of calculating distributions to
Certificateholders, be added to the amount owing under the related Mortgage
Loans, notwithstanding that the terms of such Mortgage Loans so permit.

          Notwithstanding anything in this Agreement to the contrary, the Master
Servicer shall not (unless the Mortgagor is in default with respect to the
Mortgage Loan or such default is, in the judgment of the Master Servicer,
reasonably foreseeable) make or permit any modification, waiver or amendment of
any term of any Mortgage Loan that would both (i) effect an exchange or
reissuance of such Mortgage Loan under Section 1001 of the Code (or Treasury
regulations promulgated thereunder) and (ii) cause the Trust Fund to fail to
qualify as a REMIC under the Code or the imposition of any tax on "prohibited
transactions" or "contributions" after the startup date under the REMIC
Provisions.

          The relationship of the Master Servicer (and of any successor to the
Master Servicer under this Agreement) to the Trustee under this Agreement is
intended by the parties to be that of an independent contractor and not that of
a joint venturer, partner or agent.

          SECTION 3.02. Sub-Servicing Agreements Between Master Servicer and
                        Sub-Servicers.

          (a) The Master Servicer may enter into Sub-servicing Agreements with
Sub-Servicers for the servicing and administration of the Mortgage Loans and for
the performance of any and all other activities of the Master Servicer
hereunder. Each Sub-Servicer shall be either (i) an institution the accounts of
which are insured by the FDIC or (ii) another entity that engages in the
business of originating or servicing mortgage loans comparable to the Mortgage
Loans, and in either case shall be authorized to transact business in the state
or states in which the related Mortgaged Properties it is to service are
situated, if and to the extent required by applicable law to enable the
Sub-Servicer to perform its obligations hereunder and under the Sub-servicing
Agreement, and in either case shall be a FHLMC or FNMA approved mortgage
servicer. Any Sub-servicing Agreement entered into by the Master Servicer shall
include the provision that such Agreement may be immediately terminated (x) with
cause and without any termination fee by any Master Servicer hereunder or (y)
without cause in which case the Master Servicer shall be responsible for any
termination fee or penalty resulting therefrom. In addition, each Sub-servicing
Agreement shall provide for servicing of the Mortgage Loans consistent with the
terms of this Servicing Agreement. With the consent of the Trustee, the Master
Servicer and the Sub-Servicers may enter into Sub-servicing Agreements and make
amendments to the Sub-servicing Agreements 

<PAGE>

                                      -46-


or enter into different forms of Sub-servicing Agreements providing for, among
other things, the delegation by the Master Servicer to a Sub-Servicer of
additional duties regarding the administration of the Mortgage Loans; provided,
however, that any such amendments or different forms shall be consistent with
and not violate the provisions of this Servicing Agreement, and that no such
amendment or different form shall be made or entered into which could be
reasonably expected to be materially adverse to the interests of the
Certificateholders, without the consent of the Holders of Certificates entitled
to at least 51% of the Voting Rights. The parties hereto acknowledge that the
initial Sub-Servicer shall be Impac Funding Corporation.

     The Master Servicer has entered into Sub-servicing Agreements with the
Initial Sub-Servicer for the servicing and administration of the Mortgage Loans
and may enter into additional Sub-servicing Agreements with Sub-Servicers
acceptable to the Trustee for the servicing and administration of certain of the
Mortgage Loans.

          (b) As part of its servicing activities hereunder, the Master
Servicer, for the benefit of the Trustee and the Certificateholders, shall
enforce the obligations of each Sub-Servicer under the related Sub-servicing
Agreement. Such enforcement, including, without limitation, the legal
prosecution of claims, termination of Sub-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, but
shall be reimbursed therefor 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 Loan or (ii) from a specific
recovery of costs, expenses or attorneys' fees against the party against whom
such enforcement is directed.

          SECTION 3.03. Successor Sub-Servicers.

          The Master Servicer shall be entitled to terminate any Sub-Servicing
Agreement and the rights and obligations of any Sub-Servicer pursuant to any
Sub-Servicing Agreement in accordance with the terms and conditions of such
Sub-Servicing Agreement. In the event of termination of any Sub-Servicer, all
servicing obligations of such Sub-Servicer shall be assumed simultaneously by
the Master Servicer without any act or deed on the part of such Sub-Servicer or
the Master Servicer, and the Master Servicer either shall service directly the
related Mortgage Loans or shall enter into a Sub-Servicing Agreement with a
successor Sub-Servicer which qualifies under Section 3.02.

          SECTION 3.04. Liability of the Master Servicer.

          Notwithstanding any Sub-Servicing Agreement, any of the provisions of
this Agreement relating to agreements or arrangements between the Master
Servicer and a Sub-

<PAGE>

                                      -47-


Servicer or reference to actions taken through a Sub-Servicer or otherwise, the
Master Servicer shall under all circumstances remain obligated and primarily
liable to the Trustee and Certificateholders for the servicing and administering
of the Mortgage Loans and any REO Property in accordance with the provisions of
Article III without diminution of such obligation or liability by virtue of such
Sub-Servicing Agreements or arrangements or by virtue of indemnification from
the Sub-Servicer and to the same extent and under the same terms and conditions
as if the Master Servicer alone were servicing and administering the Mortgage
Loans. For purposes of this Agreement, the Master Servicer shall be deemed to
have received payments on Mortgage Loans when the Sub-Servicer has received such
payments. The Master Servicer shall be entitled to enter into any agreement with
a Sub-Servicer for indemnification of the Master Servicer by such Sub-Servicer
and nothing contained in this Agreement shall be deemed to limit or modify such
indemnification.

          SECTION 3.05. No Contractual Relationship Between Sub-Servicers and
                        Trustee or Certificateholders.

          Any Sub-Servicing Agreement that may be entered into and any
transactions or services relating to the Mortgage Loans involving a Sub-Servicer
in its capacity as such and not as an originator shall be deemed to be between
the Sub-Servicer and the Master Servicer alone, and the Trustee and
Certificateholders shall not be deemed parties thereto and shall have no claims,
rights, obligations, duties or liabilities with respect to the Sub-Servicer
except as set forth in Section 3.06. The Master Servicer (or Sub-Servicer) shall
be liable for the payment of any franchise taxes which may be assessed by the
California Franchise Tax Board in connection with the activities of the Trust
under this Agreement.

          SECTION 3.06. Assumption or Termination of Sub-Servicing Agreements by
                        Trustee.

          (a) If the Trustee or its designee shall assume the master servicing
obligations of the Master Servicer in accordance with Section 7.02 below, the
Trustee, to the extent necessary to permit the Trustee to carry out the
provisions of Section 7.02 with respect to the Mortgage Loans, shall succeed to
all of the rights and obligations of the Master Servicer under each of the
Sub-servicing Agreements. In such event, the Trustee or its designee as the
successor master servicer shall be deemed to have assumed all of the Master
Servicer's rights and obligations therein and to have replaced the Master
Servicer as a party to such Sub-servicing Agreements to the same extent as if
such Sub-servicing Agreements had been assigned to the Trustee or its designee
as a successor master servicer, except that the Trustee or its designee as a
successor master servicer shall not be deemed to have assumed any obligations or
liabilities of the Master Servicer arising prior to such assumption (other than
the obligation to make any Advances) and the Master Servicer shall not thereby
be relieved of any liability or obligations under such Sub-servicing Agreements
arising prior to such assumption. Nothing in the foregoing shall be deemed

                                      -48-

<PAGE>


to entitle the Trustee or its designee as a successor master servicer at any
time to receive any portion of the servicing compensation provided under Section
3.17 except for such portion as the Master Servicer would be entitled to
receive.

          (b) In the event that the Trustee or its designee as successor master
servicer for the Trustee assumes the servicing obligations of the Master
Servicer under Section 7.02, upon the reasonable request of the Trustee or such
designee as successor master servicer the Master Servicer shall at its own
expense deliver to the Trustee, or at its written request to such designee,
photocopies of all documents, files and records, electronic or otherwise,
relating to the Sub-servicing Agreements and the related Mortgage Loans or REO
Property then being serviced and an accounting of amounts collected and held by
it, if any, and will otherwise cooperate and use its reasonable efforts to
effect the orderly and efficient transfer of the Sub-servicing Agreements, or
responsibilities hereunder to the Trustee, or at its written request to such
designee as successor master servicer.

          SECTION 3.07. Collection of Certain Mortgage Loan Payments.

          (a) The Master Servicer will coordinate and monitor remittances by
Sub- Servicers to the Trustee with respect to the Mortgage Loans in accordance
with this Agreement.

          (b) The Master Servicer shall make its reasonable efforts to collect
or cause to be collected all payments required under the terms and provisions of
the Mortgage Loans and shall follow, and use its reasonable efforts to cause
Sub-Servicers to follow, collection procedures comparable to the collection
procedures of prudent mortgage lenders servicing mortgage loans for their own
account to the extent such procedures shall be consistent with this Agreement.
Consistent with the foregoing, the Master Servicer may in its discretion (i)
waive or permit to be waived any late payment charge, prepayment charge,
assumption fee, or any penalty interest in connection with the prepayment of a
Mortgage Loan and (ii) suspend or reduce or permit to be suspended or reduced
regular monthly payments for a period of up to six months, or arrange or permit
an arrangement with a Mortgagor for a scheduled liquidation of delinquencies. In
the event the Master Servicer shall consent to the deferment of the due dates
for payments due on a Mortgage Note, the Master Servicer shall nonetheless make
an Advance or shall cause the related Sub-Servicer to make an advance to the
same extent as if such installment were due, owing and delinquent and had not
been deferred through liquidation of the Mortgaged Property; PROVIDED, however,
that the obligation of the Master Servicer or related Sub-Servicer to make an
Advance shall apply only to the extent that the Master Servicer believes, in
good faith, that such advances are not Nonrecoverable Advances.

          (c) Within five Business Days after the Master Servicer has determined
that all amounts which it expects to recover from or on account of a Mortgage
Loan have been recovered and that no further Liquidation Proceeds will be
received in connection therewith, the Master

<PAGE>

                                      -49-


Servicer shall provide to the Trustee a certificate of a Servicing Officer that
such Mortgage Loan became a Liquidated Mortgage Loan and has a Cash Liquidation
or REO Disposition as of the date of such determination.

          The Master Servicer shall make reasonable efforts to collect all
payments called for under the terms and provisions of the Mortgage Loans, and
shall, to the extent such procedures shall be consistent with this Agreement and
the terms and provisions of any related Insurance Policy, follow such collection
procedures as it would follow with respect to mortgage loans comparable to the
Mortgage Loans and held for its own account. The Master Servicer shall not be
required to institute or join in litigation with respect to collection of any
payment (whether under a Mortgage, Mortgage Note, Primary Hazard Insurance
Policy or otherwise or against any public or governmental authority with respect
to a taking or condemnation) if it reasonably believes that it is prohibited by
applicable law from enforcing the provision of the Mortgage or other instrument
pursuant to which such payment is required. The Master Servicer shall be
responsible for preparing and distributing all information statements relating
to payments on the Mortgage Loans, in accordance with all applicable federal and
state tax laws and regulations.

          SECTION 3.08. Sub-Servicing Accounts.

          In those cases where a Sub-Servicer is servicing a Mortgage Loan
pursuant to a Sub-Servicing Agreement, the Sub-Servicer will be required to
establish and maintain one or more accounts (collectively, the "Sub-Servicing
Account"). The Sub-Servicing Account shall be an Eligible Account and shall
otherwise be acceptable to the Master Servicer. All amounts held in a
Sub-Servicing Account shall be held in trust for the Trustee for the benefit of
the Certificateholders. Any investment of funds held in such an account shall be
in Permitted Investments maturing not later than the Business Day immediately
preceding the next Sub-Servicing Remittance Date. The Sub-Servicer will be
required to deposit into the Sub-Servicing Account no later than the first
Business Day after receipt all proceeds of Mortgage Loans received by the
Sub-Servicer, less its servicing compensation and any unreimbursed expenses and
advances, to the extent permitted by the Sub-Servicing Agreement. On each
Sub-Servicer Remittance Date the Sub-Servicer will be required to remit to the
Master Servicer for deposit in the Custodial Account all funds held in the
Sub-Servicing Account with respect to any Mortgage Loan as of the Sub-Servicer
Remittance Date, after deducting from such remittance an amount equal to the
servicing compensation (including interest on Permitted Investments) and
unreimbursed expenses and advances to which it is then entitled pursuant to the
related Sub-Servicing Agreement, to the extent not previously paid to or
retained by it. In addition, on each Sub-Servicer Remittance Date the
Sub-Servicer will be required to remit to the Master Servicer any amounts
required to be advanced pursuant to the related Sub-Servicing Agreement. The
Sub-Servicer will also be required to remit to the Master Servicer, within one
Business Day of receipt, the proceeds of any Principal Prepayment made by the
Mortgagor and any Insurance Proceeds or Liquidation Proceeds.

<PAGE>

                                      -50-


          SECTION 3.09. Collection of Taxes, Assessments and Similar Items;
                        Servicing Accounts.

          The Master Servicer and the Sub-Servicers shall establish and maintain
one or more accounts (the "Servicing Accounts"), and shall deposit and retain
therein all collections from the Mortgagors (or related advances from
Sub-Servicers) for the payment of taxes, assessments, Primary Hazard Insurance
Policy premiums, and comparable items for the account of the Mortgagors, to the
extent that the Master Servicer customarily escrows for such amounts.
Withdrawals of amounts so collected from a Servicing Account may be made only to
(i) effect payment of taxes, assessments, Primary Hazard Insurance Policy
premiums, payments under the CMAC PMI Policies and comparable items; (ii)
reimburse the Master Servicer (or a Sub-Servicer to the extent provided in the
related Sub-Servicing Agreement) out of related collections for any payments
made pursuant to Sections 3.01 (with respect to taxes and assessments), and 3.13
(with respect to Primary Hazard Insurance Policies); (iii) refund to Mortgagors
any sums as may be determined to be overages; or (iv) clear and terminate the
Servicing Account at the termination of this Agreement pursuant to Section 9.01.
As part of its servicing duties, the Master Servicer or Sub-Servicers shall, if
and to the extent required by law, pay to the Mortgagors interest on funds in
Servicing Accounts from its or their own funds, without any reimbursement
therefor.

          SECTION 3.10. Custodial Account.

          (a) The Master Servicer shall establish and maintain one or more
accounts (collectively, the "Custodial Account") in which the Master Servicer
shall deposit or cause to be deposited on a daily basis, or as and when received
from the Sub-Servicers, the following payments and collections received or made
by or on behalf of it subsequent to the Cut-off Date, or received by it prior to
the Cut-off Date but allocable to a period subsequent thereto (other than in
respect of principal and interest on the Mortgage Loans due on or before the
Cut-off Date):

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

          (ii) all payments on account of interest on the Mortgage Loans, net of
     any portion thereof retained by the Master Servicer as Master Servicing
     Fees or any Sub-Servicer as Servicing Fees and net of any portion thereof
     payable to CMAC under the CMAC PMI Policies;

          (iii) all Insurance Proceeds, other than proceeds that represent
     reimbursement of costs and expenses incurred by the Master Servicer in
     connection with presenting claims under the related Insurance Policies,
     Liquidation Proceeds and REO Proceeds;

<PAGE>

                                      -51-


          (iv) all proceeds of any Mortgage Loan or REO Property repurchased or
     purchased in accordance with Sections 2.02, 2.04 , 3.14, 3.22, 3.24 or
     9.01; and all amounts required to be deposited in connection with the
     substitution of a Qualified Substitute Mortgage Loan pursuant to Section
     2.04; and

          (v) any amounts required to be deposited pursuant to Section 3.12 or
     3.13.

          The foregoing requirements for deposit in the Custodial Account shall
be exclusive. In the event the Master Servicer shall deposit in the Custodial
Account any amount not required to be deposited therein, it may withdraw such
amount from the Custodial Account, any provision herein to the contrary
notwithstanding. The Custodial Account shall be maintained as a segregated
account, separate and apart from trust funds created for mortgage pass-through
certificates of other series, and the other accounts of the Master Servicer.

          (b) Funds in the Custodial Account may be invested in Permitted
Investments in accordance with the provisions set forth in Section 3.12. The
Master Servicer shall give notice to the Trustee and the Depositor of the
location of the Custodial Account after any change thereof.

          SECTION 3.11. Permitted Withdrawals From the Custodial Account.

          The Master Servicer may, from time to time as provided herein, make
withdrawals from the Custodial Account of amounts on deposit therein pursuant to
Section 3.10 that are attributable to the Mortgage Loans for the following
purposes:

          (i) to make deposits into the Certificate Account in the amounts and
     in the manner provided for in Section 4.01;

          (ii) to pay to itself, the Depositor, the Seller or any other
     appropriate person, as the case may be, with respect to each Mortgage Loan
     that has previously been purchased or repurchased pursuant to Sections
     2.02, 2.04, 3.14, 3.24 or 9.01 all amounts received thereon and not yet
     distributed as of the date of purchase or repurchase;

          (iii) to reimburse itself or any Sub-Servicer for Advances not
     previously reimbursed, the Master Servicer's or any Sub-Servicer's right to
     reimbursement pursuant to this clause (iii) being limited to amounts
     received which represent Late Collections (net of the related Master
     Servicing Fees and Servicing Fees) of Monthly Payments on Mortgage Loans
     with respect to which such Advances were made and as further provided in
     Section 3.15;

<PAGE>

                                      -52-


          (iv) to reimburse or pay itself, the Trustee or the Depositor for
     expenses incurred by or reimbursable to the Master Servicer, the Trustee or
     the Depositor pursuant to Sections 3.22, 6.03, 8.05 or 10.01(g), except as
     otherwise provided in such Sections;

          (v) to reimburse itself or any Sub-Servicer for costs and expenses
     incurred by or reimbursable to it relating to the prosecution of any claims
     pursuant to Section 3.13 that are in excess of the amounts so recovered;

          (vi) to reimburse itself for unpaid Master Servicing Fees or any
     Sub-Servicer for unpaid Servicing Fees and unreimbursed Servicing Advances,
     the Master Servicer's or any Sub-Servicer's right to reimbursement pursuant
     to this clause (vi) with respect to any Mortgage Loan being limited to late
     recoveries of the payments for which such advances were made pursuant to
     Section 3.01 or Section 3.09 and any other related Late Collections;

          (vii) to pay itself as servicing compensation (in addition to the
     Servicing Fee), on or after each Distribution Date, any interest or
     investment income earned on funds deposited in the Custodial Account for
     the period ending on such Distribution Date;

          (viii) to reimburse itself or any Sub-Servicer for any Advance or
     Servicing Advance previously made, after a Realized Loss has been allocated
     with respect to the related Mortgage Loan if the Advance or Servicing
     Advance was not reimbursed pursuant to clauses (iii) and (vi); and

          (ix) to clear and terminate the Custodial Account at the termination
     of this Agreement pursuant to Section 9.01.

          The Master Servicer shall keep and maintain separate accounting
records on a Mortgage Loan by Mortgage Loan basis, for the purpose of justifying
any withdrawal from the Custodial Account pursuant to such subclauses (ii)
through (viii).

          SECTION 3.12. Permitted Investments.

          Any institution maintaining the Custodial Account shall at the
direction of the Master Servicer invest the funds in such account in Permitted
Investments, each of which shall mature not later than (i) the Business Day
immediately preceding the date on which such funds are required to be withdrawn
from such account pursuant to this Agreement, if a Person other than the Trustee
is the obligor thereon, and (ii) no later than the date on which such funds are
required to be withdrawn from such account pursuant to this Agreement, if the
Trustee is the obligor thereon and shall not be sold or disposed of prior to its
maturity. All income and gain realized from any such investment as well as any
interest earned on deposits in the Custodial Account shall

<PAGE>

                                      -53-


be for the benefit of the Master Servicer. The Master Servicer shall deposit in
the Custodial Account an amount equal to the amount of any loss incurred in
respect of any such investment immediately upon realization of such loss without
right of reimbursement.

          SECTION 3.13. Maintenance of Primary Hazard Insurance.

          The Master Servicer shall cause to be maintained for each Mortgage
Loan primary hazard insurance by a Qualified Insurer or other insurer
satisfactory to the Rating Agencies with extended coverage on the related
Mortgaged Property in an amount equal to the lesser of (i) 100% of the
replacement value of the improvements, as determined by the insurance company,
on such Mortgaged Property or (ii) the unpaid principal balance of the Mortgage
Loan. The Master Servicer shall also cause to be maintained on property acquired
upon foreclosure, or deed in lieu of foreclosure, of any Mortgage Loan, fire
insurance with extended coverage in an amount equal to the replacement value of
the improvements thereon. Any reimbursed costs incurred in maintaining any
insurance described in this Section 3.13 shall be recoverable as a Servicing
Advance. The Master Servicer shall not be obligated to advance any amounts
pursuant to this Section 3.13 if, in its good faith judgment, the Master
Servicer determines that such advance would be a Nonrecoverable Advance.
Pursuant to Section 3.10, any amounts collected by the Master Servicer under any
such policies (other than amounts to be applied to the restoration or repair of
the related Mortgaged Property or property thus acquired or amounts released to
the Mortgagor in accordance with the Master Servicer's normal servicing
procedures) shall be deposited in the Custodial Account, subject to withdrawal
pursuant to Section 3.11. Any cost incurred by the Master Servicer in
maintaining any such insurance shall not, for the purpose of calculating monthly
distributions to Certificateholders, be added to the amount owing under the
Mortgage Loan, notwithstanding that the terms of the Mortgage Loan so permit. It
is understood and agreed that no earthquake or other additional insurance is to
be required of any Mortgagor or maintained on property acquired in respect of a
Mortgage 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.

          The Master Servicer shall, or shall cause the related Sub-Servicer to,
exercise its best reasonable efforts to maintain and keep in full force and
effect each Primary Insurance Policy by a Qualified Insurer, or other insurer
satisfactory to the Rating Agencies, with respect to each first lien Mortgage
Loan as to which as of the Cut-Off Date such a Primary Insurance Policy was in
effect (or, in the case of a Substitute Mortgage Loan, the date of substitution)
and the original principal amount of the related Mortgage Note exceeded 80% of
the Collateral Value in an amount at least equal to the excess of such original
principal amount over 75% of such Collateral Value until the principal amount of
any such first lien Mortgage Loan is reduced below 80% of the Collateral Value
or, based upon a new appraisal, the principal amount of such first lien Mortgage
Loan represents less than 80% of the new appraised value. The Master Servicer
shall, or shall cause the related Sub-Servicer to, effect the timely payment of
the premium on each Primary Insurance Policy. The Master Servicer and the
related Sub-Servicer shall have the power to substitute for any Primary

<PAGE>

                                      -54-


Insurance Policy another substantially equivalent policy issued by another
Qualified Insurer, PROVIDED, THAT, such substitution shall be subject to the
condition that it will not cause the ratings on the Certificates to be
downgraded or withdrawn, as evidenced in writing from each Rating Agency.

          The Master Servicer shall maintain and keep in full force and effect
the CMAC PMI Policies with respect to each CMAC Insured Loan. The Master
Servicer shall effect the timely payment of the premium on the CMAC PMI
Policies. In the event of a claim under the CMAC PMI Policies, the Master
Servicer or any Sub-Servicer shall contact the Trustee and the Trustee shall
contact CMAC to obtain any proceeds available thereunder.

          No earthquake or other additional insurance is to be required of any
Mortgagor or maintained on property acquired with respect to a security
instrument other than pursuant to such applicable laws and regulations as shall
at any time be in force and shall require such additional insurance. When, at
the time of origination of the Mortgage Loan or at any subsequent time, the
Mortgaged Property is located in a federally designated special flood hazard
area, the Master Servicer shall use its best reasonable efforts to cause with
respect to the Mortgage Loans and each REO Property flood insurance (to the
extent available and in accordance with mortgage servicing industry practice) to
be maintained. Such flood insurance shall cover the Mortgaged Property,
including all items taken into account in arriving at the Collateral Value on
which the Mortgage Loan was based, and shall be in an amount equal to the lesser
of (i) the Stated Principal Balance of the related Mortgage Loan and (ii) the
minimum amount required under the terms of coverage to compensate for any damage
or loss on a replacement cost basis, but not more than the maximum amount of
such insurance available for the related Mortgaged Property under either the
regular or emergency programs of the National Flood Insurance Program (assuming
that the area in which such Mortgaged Property is located is participating in
such program). Unless applicable state law requires a higher deductible, the
deductible on such flood insurance may not exceed $1,000 or 1% of the applicable
amount of coverage, whichever is less.

          In the event that the Master Servicer shall obtain and maintain a
blanket fire insurance policy with extended coverage insuring against hazard
losses on all of the Mortgage Loans, it shall conclusively be deemed to have
satisfied its obligations as set forth in the first two sentences of this
Section 3.13, it being understood and agreed that such policy may contain a
deductible clause, in which case the Master Servicer shall, in the event that
there shall not have been maintained on the related Mortgaged Property a policy
complying with the first two sentences of this Section 3.13 and there shall have
been a loss which would have been covered by such policy, deposit in the
Certificate Account from its own funds the amount not otherwise payable under
the blanket policy because of such deductible clause. Any such deposit by the
Master Servicer shall be made on the Certificate Account Deposit Date next
preceding the Distribution Date which occurs in the month following the month in
which payments under any such policy

<PAGE>

                                      -55-


would have been deposited in the Custodial Account. In connection with its
activities as administrator and servicer of the Mortgage Loans, the Master
Servicer agrees to present, on behalf of itself, the Trustee and
Certificateholders, claims under any such blanket policy.

          SECTION 3.14. Enforcement of Due-on-Sale Clauses; Assumption
                        Agreements.

          The Master Servicer will, to the extent it has knowledge of any
conveyance or prospective conveyance by any Mortgagor of the Mortgaged Property
(whether by absolute conveyance or by contract of sale, and whether or not the
Mortgagor remains or is to remain liable under the Mortgage Note or the
Mortgage), exercise or cause to be exercised its rights to accelerate the
maturity of such Mortgage Loan under any "due-on-sale" clause applicable
thereto; provided, however, that the Master Servicer shall not exercise any such
rights if it reasonably believes that it is prohibited by law from doing so. The
Master Servicer or the related Sub-Servicer may repurchase a Mortgage Loan at
the Purchase Price when the Master Servicer requires acceleration of the
Mortgage Loan, but only if the Master Servicer is satisfied, as evidenced by an
Officer's Certificate delivered to the Trustee, that either (i) such Mortgage
Loan is in default or default is reasonably foreseeable or (ii) if such Mortgage
Loan is not in default or default is not reasonably foreseeable, such repurchase
will have no adverse tax consequences for the Trust Fund or any
Certificateholder. If the Master Servicer is unable to enforce such
"due-on-sale" clause (as provided in the second preceding sentence) or if no
"due-on-sale" clause is applicable, the Master Servicer or the Sub-Servicer is
authorized to enter into an assumption and modification agreement with the
Person to whom such property has been conveyed or is proposed to be conveyed,
pursuant to which such Person becomes liable under the Mortgage Note and, to the
extent permitted by applicable state law, the Mortgagor remains liable thereon;
provided, however, that the Master Servicer shall not enter into any assumption
and modification agreement if the coverage provided under the Primary Insurance
Policy, if any, would be impaired by doing so. The Master Servicer shall notify
the Trustee, whenever possible, before the completion of such assumption
agreement, and shall forward to the Trustee the original copy of such assumption
agreement, which copy shall be added by the Trustee to the related Mortgage File
and which shall, for all purposes, be considered a part of such Mortgage File to
the same extent as all other documents and instruments constituting a part
thereof. In connection with any such assumption agreement, the interest rate on
the related Mortgage Loan shall not be changed and no other material alterations
in the Mortgage Loan shall be made unless such material alteration would not
cause the Trust Fund to fail to qualify as a REMIC for federal income tax
purposes, as evidenced by an Opinion of Counsel. The Master Servicer is also
authorized to enter into a substitution of liability agreement with such Person,
pursuant to which the original Mortgagor is released from liability and such
Person is substituted as the Mortgagor and becomes liable under the Mortgage
Note. Any fee collected by or on behalf of the Master Servicer for entering into
an assumption or substitution of liability agreement will be retained by or on
behalf of the Master Servicer as additional servicing compensation. In
connection with any such assumption, no material term of

<PAGE>

                                      -56-


the Mortgage Note (including but not limited to the Mortgage Rate, the amount of
the Monthly Payment and any other term affecting the amount or timing of payment
on the Mortgage Loan) may be changed. The Master Servicer shall not enter into
any substitution or assumption if such substitution or assumption shall (i) both
constitute a "significant modification" effecting an exchange or reissuance of
such Mortgage Loan under the Code (or Treasury regulations promulgated
thereunder) and cause either the Trust Fund to fail to qualify as a REMIC under
the REMIC Provisions or (ii) cause the imposition of any tax on "prohibited
transactions" or "contributions" after the Startup Day under the REMIC
Provisions. The Master Servicer shall notify the Trustee that any such
substitution or assumption agreement has been completed by forwarding to the
Trustee the original copy of such substitution or assumption agreement, which
copy shall be added to the related Mortgage File and shall, for all purposes, be
considered a part of such Mortgage File to the same extent as all other
documents and instruments constituting a part thereof. A portion equal to up to
2% of the Collateral Value of the related Mortgage Loan, of any fee or
additional interest collected by the related Sub-Servicer or the Master Servicer
for consenting in any such conveyance or entering into any such assumption
agreement may be retained by the related Sub-Servicer or the Master Servicer as
additional servicing compensation.

          Notwithstanding the foregoing paragraph or any other provision of this
Agreement, the Master Servicer shall not be deemed to be in default, breach or
any other violation of its obligations hereunder by reason of any assumption of
a Mortgage Loan by operation of law or any assumption that the Master Servicer
may be restricted by law from preventing, for any reason whatsoever. For
purposes of this Section 3.14, the term "assumption" is deemed to also include a
sale of a Mortgaged Property that is not accompanied by an assumption or
substitution of liability agreement.

          SECTION 3.15. Realization Upon Defaulted Mortgage Loans.

          The Master Servicer shall exercise reasonable efforts, consistent with
the procedures that the Master Servicer would use in servicing loans for its own
account, to foreclose upon or otherwise comparably convert (which may include an
REO Acquisition) the ownership of 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 pursuant to
Section 3.07, and which are not released from the Trust Fund pursuant to any
other provision hereof. The Master Servicer shall use reasonable efforts to
realize proceeds from such defaulted Mortgage Loans in such manner as will
maximize the receipt of principal and interest by Certificateholders, taking
into account, among other things, the timing of foreclosure proceedings. The
foregoing is subject to the provisions that, in any case in which Mortgaged
Property shall have suffered damage from an Uninsured Cause, the Master Servicer
shall not be required to expend its own funds toward the restoration of such
property unless it shall determine in its sole discretion (i) that such
restoration will increase the net proceeds of liquidation of the related
Mortgage Loan to Certificateholders after reimbursement to itself for such
expenses, and (ii) that

<PAGE>

                                      -57-


such expenses will be recoverable by the Master Servicer through Insurance
Proceeds or Liquidation Proceeds from the related Mortgaged Property, as
contemplated in Section 3.11. The Master Servicer shall be responsible for all
other costs and expenses incurred by it in any such proceedings; provided,
however, that it shall be entitled to reimbursement thereof from the related
property, as contemplated in Section 3.11.

          The proceeds of any Cash Liquidation or REO Disposition, as well as
any recovery resulting from a partial collection of Insurance Proceeds or
Liquidation Proceeds or any income from an REO Property, will be applied in the
following order of priority: first, to reimburse the Master Servicer or any
Sub-Servicer for any related unreimbursed Servicing Advances, pursuant to
Section 3.11(vi) or 3.22; second, to accrued and unpaid interest on the Mortgage
Loan or REO Imputed Interest, at the Mortgage Rate, to the date of the Cash
Liquidation or REO Disposition, or to the Due Date prior to the Distribution
Date on which such amounts are to be distributed if not in connection with a
Cash Liquidation or REO Disposition; and third, as a recovery of principal of
the Mortgage Loan. If the amount of the recovery so allocated to interest is
less than a full recovery thereof, that amount will be allocated as follows:
first, to unpaid Master Servicing Fees and Servicing Fees; and second, to
interest at the Net Mortgage Rate. The portion of the recovery so allocated to
unpaid Master Servicing Fees and Servicing Fees shall be reimbursed to the
Master Servicer or any Sub-Servicer pursuant to Section 3.11(vi). The portions
of the recovery so allocated to interest at the Net Mortgage Rate and to
principal of the Mortgage Loan shall be applied as follows: first, to reimburse
the Master Servicer or any Sub-Servicer for any related unreimbursed Advances in
accordance with Section 3.11(iii) or 3.22, and second, for distribution in
accordance with the provisions of Section 4.01, subject to Section 3.22 with
respect to certain recoveries from an REO Disposition constituting Excess
Proceeds.

          SECTION 3.16. Trustee to Cooperate; Release of Mortgage Files.

          Upon the payment in full of any Mortgage Loan, or the receipt by the
Master Servicer of a notification that payment in full shall be escrowed in a
manner customary for such purposes, the Master Servicer will immediately notify
the Trustee by a certification (which certification shall include a statement to
the effect that all amounts received or to be received in connection with such
payment which are required to be deposited in the Custodial Account pursuant to
Section 3.10 have been or will be so deposited) of a Servicing Officer and shall
request delivery to it of the Mortgage File in the form of the Request for
Release attached hereto as Exhibit F-2. Upon receipt of such certification and
request, the Trustee shall promptly release the related Mortgage File to the
Master Servicer. Subject to the receipt by the Master Servicer of the proceeds
of such payment in full and the payment of all related fees and expenses, the
Master Servicer shall arrange for the release to the Mortgagor of the original
cancelled Mortgage Note. All other documents in the Mortgage File shall be
retained by the Master Servicer to the extent required by applicable law. The
Master Servicer shall provide for preparation of the appropriate instrument of
satisfaction covering any Mortgage Loan which pays in full and the Trustee shall

<PAGE>

                                      -58-


cooperate in the execution and return of such instrument to provide for its
delivery or recording as may be required. No expenses incurred in connection
with any instrument of satisfaction or deed of reconveyance shall be chargeable
to the Custodial Account or the Certificate Account.

          From time to time and as appropriate for the servicing or foreclosure
of any Mortgage Loan, including, for this purpose, collection under any
insurance policy relating to the Mortgage Loan, the Trustee shall, upon request
of the Master Servicer and delivery to the Trustee of a Request for Release in
the form attached hereto as Exhibit F-1, release the related Mortgage File to
the Master Servicer, and the Trustee shall execute such documents as the Master
Servicer shall prepare and request as being necessary to the prosecution of any
such proceedings. Such Request for Release shall obligate the Master Servicer to
return each document previously requested from the Mortgage File to the Trustee
when the need therefor by the Master Servicer no longer exists; and in any event
within 21 days of the Master Servicer's receipt thereof, unless the Mortgage
Loan has been liquidated and the Liquidation Proceeds relating to the Mortgage
Loan have been deposited in the Custodial Account or the Mortgage File or such
document has been delivered to an attorney, or to a public trustee or other
public official as required by law, for purposes of initiating or pursuing legal
action or other proceedings for the foreclosure of the Mortgaged Property either
judicially or non-judicially, and the Master Servicer has delivered to the
Trustee a certificate of a Servicing Officer certifying as to the name and
address of the Person to which such Mortgage File or such document was delivered
and the purpose or purposes of such delivery. Upon receipt of a Request for
Release stating that such Mortgage Loan was liquidated and that all amounts
received or to be received in connection with such liquidation which are
required to be deposited into the Custodial Account have been or will be so
deposited, or that such Mortgage Loan has become an REO Property, a copy of the
Request for Release shall be released by the Trustee to the Master Servicer.

          Upon written request of a Servicing Officer, the Trustee shall execute
and deliver to the Master Servicer any court pleadings, requests for trustee's
sale or other documents prepared by the Master Servicer that are necessary to
the foreclosure or trustee's sale in respect of a Mortgaged Property or to any
legal action brought to obtain judgment against any Mortgagor on the Mortgage
Note or Mortgage or to obtain a deficiency judgment, or to enforce any other
remedies or rights provided by the Mortgage Note or Mortgage or otherwise
available at law or in equity. Each such request that such pleadings or
documents be executed by the Trustee shall include a certification signed by a
Servicing Officer as to the reason such documents or pleadings are required and
that the execution and delivery thereof by the Trustee will not invalidate or
otherwise affect the lien of the Mortgage, except for the termination of such a
lien upon completion of the foreclosure or trustee's sale.

          SECTION 3.17. Servicing Compensation.

<PAGE>

                                      -59-


          As compensation for its activities hereunder, the Master Servicer
shall be entitled to withhold and retain, from deposits to the Custodial Account
of amounts representing payments or recoveries of interest, the Master Servicing
Fees and Servicing Fees with respect to each Mortgage Loan (less any portion of
the Servicing Fees retained by any Sub-Servicer). In addition, the Master
Servicer shall be entitled to recover unpaid Master Servicing Fees and Servicing
Fees out of related Late Collections to the extent permitted in Section 3.11.

          The Master Servicer also shall be entitled pursuant to Section 3.11 to
receive from the Custodial Account and the Certificate Account as additional
servicing compensation interest or other income earned on deposits therein,
subject to Section 3.23, as well as any prepayment charges, assumption fees,
late payment charges and reconveyance fees. The Master Servicer shall be
required to pay all expenses incurred by it in connection with its servicing
activities hereunder (including servicing compensation of the Sub-Servicer to
the extent not retained by it and the fees and expenses of the Trustee), and
shall not be entitled to reimbursement therefor except as specifically provided
in Section 3.11. The Master Servicing Fee may not be transferred in whole or in
part except in connection with the transfer of all of the Master Servicer's
responsibilities and obligations under this Agreement.

          SECTION 3.18. Maintenance of Certain Servicing Policies.

    The Master Servicer shall obtain and maintain (to the extent generally
commerically available from time to time) at its own expense and for the
duration of this Agreement a blanket fidelity bond and shall cause each
Sub-Servicer to obtain and maintain an errors and omissions insurance policy
covering such Sub-Servicer's officers, employees and other persons acting on its
behalf in connection with its activities under this Agreement. The amount of
coverage shall be at least equal to the coverage maintained by the Master
Servicer in order to be acceptable to FNMA or FHLMC to service loans for it or
otherwise in an amount as is commercially available at a cost that is generally
not regarded as excessive by industry standards. The Master Servicer shall
promptly notify the Trustee of any material change in the terms of such bond or
policy. The Master Servicer shall provide annually to the Trustee a certificate
of insurance that such bond and policy are in effect. If any such bond or policy
ceases to be in effect, the Master Servicer shall, to the extent possible, give
the Trustee ten days' notice prior to any such cessation and shall use its
reasonable best efforts to obtain a comparable replacement bond or policy, as
the case may be.

          SECTION 3.19. Annual Statement as to Compliance.

          Within 120 days after December 31 of each year, commencing December
1998, the Master Servicer at its own expense shall deliver to the Trustee, with
a copy to the Rating Agencies, a certificate signed by a Servicing Officer
stating, as to the signers thereof, that (i) a review of the activities of the
Master Servicer during the preceding calendar year and of 

<PAGE>

                                      -60-


performance under this Agreement has been made under such officers' supervision,
(ii) to the best of such officers' knowledge, based on such review, the Master
Servicer has fulfilled all its obligations under this Agreement for such year,
or, if there has been a default in the fulfillment of any such obligation,
specifying each such default known to such officer and the nature and status
thereof including the steps being taken by the Master Servicer to remedy such
default; (iii) a review of the activities of each Sub-Servicer during the
Sub-Servicer's most recently ended fiscal year on or prior to such December 31
and its performance under its Sub-servicing Agreement has been made under such
officer's supervision; and (iv) to the best of the Servicing Officer's
knowledge, based on his review and the certification of an officer of the
Sub-Servicer (unless the Servicing Officer has reason to believe that reliance
on such certification is not justified), either each Sub-Servicer has performed
and fulfilled its duties, responsibilities and obligations under this Agreement
and its Sub-servicing Agreement in all material respects throughout the year,
or, if there has been a default in performance or fulfillment of any such
duties, responsibilities or obligations, specifying the nature and status of
each such default known to the Servicing Officer. Copies of such statements
shall be provided by the Master Servicer to the Certificateholders upon request
or by the Trustee at the expense of the Master Servicer should the Master
Servicer fail to provide such copies.

          SECTION 3.20. Annual Independent Public Accountants' Servicing
                        Statement.

          (a) Within 120 days after December 31 of each year, commencing
December, 1998, the Master Servicer, at its expense, shall cause a firm of
independent public accountants who are members of the American Institute of
Certified Public Accountants to furnish a statement to the Master Servicer,
which will be provided to the Trustee and the Rating Agencies, to the effect
that, in connection with the firm's examination of the Master Servicer's
financial statements as of the end of such calendar year, nothing came to their
attention that indicated that the Master Servicer was not in compliance with the
provisions of this Agreement except for (i) such exceptions as such firm
believes to be immaterial and (ii) such other exceptions as are set forth in
such statement.

          (b) Within 120 days after December 31 of each year, commencing
December 1998, the Master Servicer, at its expense, shall or shall cause each
Sub-Servicer to cause a nationally recognized firm of independent certified
public accountants to furnish to the Master Servicer or such Sub-Servicer a
report stating that (i) it has obtained a letter of representation regarding
certain matters from the management of the Master Servicer or such Sub-Servicer
which includes an assertion that the Master Servicer or such Sub-Servicer has
complied with certain minimum mortgage loan servicing standards (to the extent
applicable to commercial and multifamily mortgage loans) identified in the
Uniform Single Attestation Program for Mortgage Bankers established by the
Mortgage Bankers Association of America with respect to the servicing of first
and second lien conventional single family mortgage loans during the most
recently

<PAGE>

                                      -61-


completed calendar year and (ii) on the basis of an examination conducted by
such firm in accordance with standards established by the American Institute of
Certified Public Accountants, such representation is fairly stated in all
material respects, subject to such exceptions and other qualifications that may
be appropriate. Immediately upon receipt of such report, the Master Servicer
shall or shall cause each Sub-Servicer to furnish a copy of such report to the
Trustee and the Rating Agencies.

          SECTION 3.21. Access to Certain Documentation.

          The Master Servicer shall provide, and shall cause any Sub-Servicer to
provide, to the Trustee, access to the documentation regarding the related
Mortgage Loans and REO Property and to the Certificateholders, the FDIC, and the
supervisory agents and examiners of the FDIC (to which the Trustee shall also
provide) access to the documentation regarding the related Mortgage Loans
required by applicable regulations, such access being afforded without charge
but only upon reasonable request and during normal business hours at the offices
of the Master Servicer or the Sub-Servicers that are designated by these
entities; PROVIDED, HOWEVER, that, unless otherwise required by law, the
Trustee, the Master Servicer or the Sub-Servicer shall not be required to
provide access to such documentation if the provision thereof would violate the
legal right to privacy of any Mortgagor; PROVIDED, FURTHER, HOWEVER, that the
Trustee shall coordinate its requests for such access so as not to impose an
unreasonable burden on, or cause an unreasonable interruption of, the business
of the Master Servicer or any Sub-Servicer. The Master Servicer, the
Sub-Servicers and the Trustee shall allow representatives of the above entities
to photocopy any of the documentation and shall provide equipment for that
purpose at a charge that covers their own actual out-of-pocket costs.

          SECTION 3.22. Title, Conservation and Disposition of REO Property.

          This Section shall apply only to REO Properties acquired for the
account of the Trust Fund and shall not apply to any REO Property relating to a
Mortgage Loan which was purchased or repurchased from the Trust Fund pursuant to
Sections 2.02, 2.04, 3.14 or 3.24. In the event that title to any such REO
Property is acquired, the deed or certificate of sale shall be issued to the
Trustee, or to its nominee, on behalf of the Certificateholders. The Master
Servicer, on behalf of the Trust Fund, shall either sell any REO Property before
the close of the third taxable year following the taxable year in which the
Trust Fund acquires ownership of such REO Property for purposes of Section
860G(a)(8) of the Code or, at the expense of the Trust Fund, request, more than
60 days before the day on which the three-year grace period would otherwise
expire an extension of the three-year grace period, unless the Master Servicer
has delivered to the Trustee an Opinion of Counsel, addressed to the Trustee and
the Master Servicer, to the effect that the holding by the Trust Fund of such
REO Property subsequent to three years after its acquisition will not result in
the imposition on The Trust Fund of taxes on "prohibited transactions" thereof,
as defined in Section 860F of the Code, or cause the Trust Fund to fail to
qualify as a REMIC 

<PAGE>

                                      -62-


under the REMIC Provisions or comparable provisions of the laws of the State of
California at any time that any Certificates or the Excess Servicing Strip are
outstanding. The Master Servicer shall manage, conserve, protect and operate
each REO Property for the Certificateholders solely for the purpose of its
prompt disposition and sale in a manner which does not cause such REO Property
to fail to qualify as "foreclosure property" within the meaning of Section
860G(a)(8) or result in the receipt by the Trust Fund of any "income from
non-permitted assets" within the meaning of Section 860F(a)(2)(B) of the Code or
any "net income from foreclosure property" which is subject to taxation under
the REMIC Provisions. Pursuant to its efforts to sell such REO Property, the
Master Servicer shall either itself or through an agent selected by the Master
Servicer protect and conserve such REO Property in the same manner and to such
extent as is customary in the locality where such REO Property is located and
may, incident to its conservation and protection of the interests of the
Certificateholders, rent the same, or any part thereof, as the Master Servicer
deems to be in the best interest of the Certificateholders for the period prior
to the sale of such REO Property.

          Any REO Disposition shall be for cash only (unless changes in the
REMIC Provisions made subsequent to the Startup Day allow a sale for other
consideration).

          The Master Servicer shall segregate and hold all funds collected and
received in connection with the operation of any REO Property separate and apart
from its own funds and general assets. The Master Servicer shall deposit, or
cause to be deposited, on a daily basis in the Custodial Account all revenues
received with respect to the REO Properties, net of any directly related
expenses incurred or withdraw therefrom funds necessary for the proper
operation, management and maintenance of the REO Property.

          If as of the date of acquisition of title to any REO Property there
remain outstanding unreimbursed Servicing Advances with respect to such REO
Property or any outstanding Advances allocated thereto the Master Servicer, upon
an REO Disposition, shall be entitled to reimbursement for any related
unreimbursed Servicing Advances and any unreimbursed related Advances as well as
any unpaid Master Servicing Fees and Servicing Fees from proceeds received in
connection with the REO Disposition, as further provided in Section 3.15. The
Master Servicer shall not be obligated to advance any amounts with respect to an
REO Property if, in its good faith judgment, the Master Servicer determines that
such advance would constitute a Nonrecoverable Advance.

          The REO Disposition shall be carried out by the Master Servicer at
such price and upon such terms and conditions as the Master Servicer shall
determine.

          The Master Servicer shall deposit the proceeds from the REO
Disposition, net of any payment to the Master Servicer as provided above, in the
Custodial Account upon receipt thereof for distribution in accordance with
Section 4.01; provided, that any such net proceeds received by the Master
Servicer which are in excess of the applicable Stated Principal Balance plus

<PAGE>

                                      -63-


all unpaid REO Imputed Interest thereon through the last day of the month in
which the REO Disposition occurred ("Excess Proceeds") shall be retained by the
Master Servicer as additional servicing compensation.

          With respect to any Mortgage Loan as to which the Master Servicer has
received notice of, or has actual knowledge of, the presence of any toxic or
hazardous substance on the Mortgaged Property, the Master Servicer shall not, on
behalf of the Trustee, either (i) obtain title to the related Mortgaged Property
as a result of or in lieu of foreclosure or otherwise, or (ii) otherwise acquire
possession of, the related Mortgaged Property, unless the Master Servicer has,
at least 30 days prior to taking such action, obtained and delivered to the
Trustee an environmental audit report prepared by a Person who regularly
conducts environmental audits using customary industry standards. The Master
Servicer shall take such action as it deems to be in the best economic interest
of the Trust Fund (other than proceeding against the Mortgaged Property) and is
hereby authorized at such time as it deems appropriate to release such Mortgaged
Property from the lien of the related Mortgage.

          The cost of the environmental audit report contemplated by this
Section 3.22 shall be advanced by the Master Servicer as an expense of the Trust
Fund, and the Master Servicer shall be reimbursed therefor from the Custodial
Account as provided in Section 3.11, any such right of reimbursement being prior
to the rights of the Certificateholders to receive any amount in the Custodial
Account.

          If the Master Servicer determines, as described above, that it is in
the best economic interest of the Trust Fund to take such actions as are
necessary to bring any such Mortgaged Property in compliance with applicable
environmental laws, or to take such action with respect to the containment,
clean-up or remediation of hazardous substances, hazardous materials, hazardous
wastes, or petroleum-based materials affecting any such Mortgaged Property, then
the Master Servicer shall take such action as it deems to be in the best
economic interest of the Trust Fund. The cost of any such compliance,
containment, clean-up or remediation shall be advanced by the Master Servicer as
an expense of the Trust Fund, and the Master Servicer shall be entitled to be
reimbursed therefor from the Custodial Account as provided in Section 3.11, any
such right of reimbursement being prior to the rights of the Certificateholders
to receive any amount in the Custodial Account.

          SECTION 3.23. Additional Obligations of the Master Servicer.

          On each Certificate Account Deposit Date, the Master Servicer shall
deliver to the Trustee for deposit in the Certificate Account from its own funds
and without any right of reimbursement therefor, a total amount equal to the
amount of Compensating Interest for the related Distribution Date.

<PAGE>

                                      -64-


          SECTION 3.24 Optional Purchase of Defaulted Mortgage Loans.

    The Master Servicer or any affiliate of the Master Servicer, in its
sole discretion, shall have the right to elect (by written notice sent to the
Master Servicer, and the Trustee), but shall not be obligated, to purchase for
its own account from the Trust Fund any Mortgage Loan which is 90 days or more
delinquent in the manner and at the price specified in Section 2.04. The
purchase price for any Mortgage Loan purchased hereunder shall be deposited in
the Certificate Account and the Trustee, upon receipt of such deposit, shall
release or cause to be released to the purchaser of such Mortgage Loan the
related Mortgage File and shall execute and deliver such instruments of transfer
or assignment prepared by the purchaser of such Mortgage Loan, in each case
without recourse, as shall be necessary to vest in the purchaser of such
Mortgage Loan any Mortgage Loan released pursuant hereto and the purchaser of
such Mortgage Loan shall succeed to all the Trustee's right, title and interest
in and to such Mortgage Loan and all security and documents related thereto.
Such assignment shall be an assignment outright and not for security. The
purchaser of such Mortgage Loan shall thereupon own such Mortgage Loan, and all
security and documents, free of any further obligation to the Trustee or the
Certificateholders with respect thereto.

          SECTION 3.25. Additional Obligations of the Depositor.

          The Depositor agrees that on or prior to the tenth day after the
Closing Date, the Depositor shall provide the Trustee with a written
notification, substantially in the form of Exhibit K attached hereto, relating
to each Class of Certificates, setting forth (i) in the case of each Class of
such Certificates, (a) if less than 10% of the aggregate Certificate Principal
Balance of such Class of Certificates has been sold as of such date, the value
calculated pursuant to clause (b)(iii) of Exhibit K hereto, or, (b) if 10% or
more of such Class of Certificates has been sold as of such date but no single
price is paid for at least 10% of the aggregate Certificate Principal Balance of
such Class of Certificates, then the weighted average price at which the
Certificates of such Class were sold and the aggregate percentage of
Certificates of such Class sold, (c) the first single price at which at least
10% of the aggregate Certificate Principal Balance of such class of Certificates
was sold, or (d) if any Certificates of each Class of Certificates are retained
by the Depositor or an affiliate corporation, or are delivered to the Seller,
the fair market value of such Certificates as of the Closing Date, (ii) the
Prepayment Assumption used in pricing the Certificates, and (iii) such other
information as to matters of fact as the Trustee may reasonably request to
enable it to comply with its reporting requirements with respect to each Class
of such Certificates to the extent such information can in the good faith
judgment of the Depositor be determined by it.

          SECTION 3.26. Periodic Filings with the Securities and Exchange
                        Commission; Additional Information.

<PAGE>

                                      -65-


          The Trustee shall prepare or cause to be prepared for filing with the
Commission any and all reports, statements and information respecting the Trust
Fund and/or the Certificates required to be filed with the Commission pursuant
to the Securities Exchange Act of 1934, as amended, and shall solicit any and
all proxies of the Certificateholders whenever such proxies are required to be
solicited, pursuant to the Securities Exchange Act of 1934, as amended. The
Company shall promptly file, and exercise its reasonable best efforts to obtain
a favorable response to, no-action requests with, or other appropriate exemptive
relief from, the Commission seeking the usual and customary exemption from such
reporting requirements granted to issuers of securities similar to the
Certificates. Fees and expenses incurred by the Trustee in connection with this
Section shall not be reimbursable from the Trust Fund.

          The Master Servicer and the Company each agree to promptly furnish to
the Trustee, from time to time upon request, such further information, reports
and financial statements within their respective control related to this
Agreement and the Mortgage Loans as the Trustee reasonably deems appropriate to
prepare and file all necessary reports with the Commission.

          SECTION 3.27. The Excess Servicing Strip.

          On each Distribution Date, the Excess Servicing Strip Holder will be
entitled to receive distributions in respect of the Excess Servicing Strip as a
portion of its servicing compensation, equal to the amount of Accrued
Certificate Interest thereon for such Distribution Date. Distributions in
respect of the Excess Servicing Strip shall be made by the Trustee by wire
transfer in immediately available funds to an account designated by the Excess
Servicing Strip Holder. In the event of transfer of the primary servicing from
the initial Subservicer to another Subservicer, the Master Servicer may allocate
a portion of distributions on the Excess Servicing Strip to the new Subservicer
as additional servicing compensation.

<PAGE>

                                      -66-


                                   ARTICLE IV

                         PAYMENTS TO CERTIFICATEHOLDERS

          SECTION 4.01. Certificate Account; Distributions.

          (a) The Trustee shall establish and maintain a Certificate Account, in
which the Master Servicer shall cause to be deposited on behalf of the Trustee
on or before 5:00 P.M. New York time on each Certificate Account Deposit Date by
wire transfer of immediately available funds an amount equal to the sum of (i)
any Advance for the immediately succeeding Distribution Date, (ii) any amount
required to be deposited in the Certificate Account pursuant to Sections 3.11,
3.13, 3.22 or 3.23 and (iii) all other amounts constituting the Available
Distribution Amount for the immediately succeeding Distribution Date.

          (b) On each Distribution Date, prior to making any other distributions
referred to in Section 4.01, the Trustee shall withdraw from the Certificate
Account and pay itself the Trustee's Fee for such Distribution Date.

          (c) On each Distribution Date the Trustee shall distribute to each
Certificateholder of record as of the next preceding Record Date (other than as
provided in Section 9.01 respecting the final distribution), and to the Excess
Servicing Strip Holder in respect of the Excess Servicing Strip as provided in
Section 3.27 hereof, either in immediately available funds (by wire transfer or
otherwise) to the account of such Certificateholder at a bank or other entity
having appropriate facilities therefor, if such Certificateholder has so
notified the Trustee at least 5 Business Days prior to the related Record Date
and such Certificateholder is the registered owner of Certificates the aggregate
Initial Certificate Principal Balance of which is not less than $2,500,000, or
otherwise by check mailed to such Certificateholder at the address of such
Holder appearing in the Certificate Register, such Certificateholder's share
(based on the aggregate of the Percentage Interests represented by Certificates
of the applicable Class held by such Holder) of the following amounts, in the
following order of priority, in each case to the extent of the remaining
Available Distribution Amount:

               (i) to the Class A Certificateholders, the Class R
          Certificateholders and the holder of the Excess Servicing Strip, on a
          pro rata basis based on Accrued Certificate Interest payable on such
          Certificates or the Excess Servicing Strip with respect to such
          Distribution Date, Accrued Certificate Interest on such Classes of
          Certificates or Excess Servicing Strip, as applicable, for such
          Distribution Date, plus any Accrued Certificate Interest thereon
          remaining unpaid from any previous Distribution Date (the "Senior
          Interest Distribution Amount");

<PAGE>

                                      -67-


               (ii) to the Class A Certificateholders (other than the Variable
          Strip Certificateholders) and Class R Certificateholders, in the
          priorities and amounts set forth in Section 4.01(d) and (e), the sum
          of the following (applied to reduce the Certificate Principal Balances
          of such Class A Certificates or Class R Certificates, as applicable):

                    (A) the Senior Percentage for such Distribution Date times
               the sum of the following:

                         (1) the principal portion of each Monthly Payment due
                    during the related Due Period on each Outstanding Mortgage
                    Loan whether or not received on or prior to the related
                    Determination Date, minus the principal portion of any Debt
                    Service Reduction which together with other Bankruptcy
                    Losses exceeds the Bankruptcy Amount;

                         (2) the Stated Principal Balance of any Mortgage Loan
                    repurchased during the related Prepayment Period pursuant to
                    Section 2.02, 2.04, 3.14 or 3.24 and the amount of any
                    shortfall deposited in the Custodial Account in connection
                    with the substitution of a Deleted Mortgage Loan pursuant to
                    Section 2.04 during the related Prepayment Period; and

                         (3) the principal portion of all other unscheduled
                    collections (other than Principal Prepayments in Full and
                    Curtailments and amounts received in connection with a Cash
                    Liquidation or REO Disposition of a Mortgage Loan described
                    in Section 4.01(c)(ii)(B), including without limitation
                    Insurance Proceeds, Liquidation Proceeds and REO Proceeds)
                    received during the related Prepayment Period to the extent
                    applied by the Master Servicer as recoveries of principal of
                    the related Mortgage Loan pursuant to Section 3.15;

                    (B) with respect to each Mortgage Loan for which a Cash
               Liquidation or a REO Disposition occurred during the related
               Prepayment Period and did not result in any Excess Special Hazard
               Losses, Excess Fraud Losses, Excess Bankruptcy Losses or
               Extraordinary Losses, an amount equal to the lesser of (a) the
               Senior Percentage for such Distribution Date times the Stated
               Principal Balance of such Mortgage Loan and (b) the Senior
               Accelerated Distribution Percentage for such Distribution Date
               times the related unscheduled collections (including without
               limitation Insurance

<PAGE>

                                      -68-


               Proceeds, Liquidation Proceeds and REO Proceeds) to the extent
               applied by the Master Servicer as recoveries of principal of the
               related Mortgage Loan pursuant to Section 3.15;

                    (C) the Senior Accelerated Distribution Percentage for such
               Distribution Date times the aggregate of all Principal
               Prepayments in Full and Curtailments received in the related
               Prepayment Period; and

                    (D) any amounts described in subsection (ii), clauses (A),
               (B) or (C) of this Section 4.01(c), as determined for any
               previous Distribution Date, which remain unpaid after application
               of amounts previously distributed pursuant to this clause (D) to
               the extent that such amounts are not attributable to Realized
               Losses which have been allocated to the Class M Certificates or
               Class B Certificates;

               (iii) to the Holders of the Class M-1 Certificates, the Accrued
          Certificate Interest thereon for such Distribution Date, plus any
          Accrued Certificate Interest thereon remaining unpaid from any
          previous Distribution Date, except as provided below;

               (iv) to the Holders of the Class M-1 Certificates, an amount
          equal to the Subordinate Principal Distribution Amount for such Class
          of Certificates for such Distribution Date;

               (v) to the Holders of the Class M-2 Certificates, the Accrued
          Certificate Interest thereon for such Distribution Date, plus any
          Accrued Certificate Interest thereon remaining unpaid from any
          previous Distribution Date, except as provided below;

               (vi) to the Holders of the Class M-2 Certificates, an amount
          equal to the Subordinate Principal Distribution Amount for such Class
          of Certificates for such Distribution Date;

               (vii) to the Holders of the Class M-3 Certificates, the Accrued
          Certificate Interest thereon for such Distribution Date, plus any
          Accrued Certificate Interest thereon remaining unpaid from any
          previous Distribution Date, except as provided below;

               (viii) to the Holders of the Class M-3 Certificates, an amount
          equal to (x) the Subordinate Principal Distribution Amount for such
          Class of Certificates for such Distribution Date;

<PAGE>

                                      -69-


               (ix) to the Holders of the Class B-1 Certificates, the Accrued
          Certificate Interest thereon for such Distribution Date, plus any
          Accrued Certificate Interest thereon remaining unpaid from any
          previous Distribution Date, except as provided below;

               (x) to the Holders of the Class B-1 Certificates, an amount equal
          to the Subordinate Principal Distribution Amount for such Class of
          Certificates for such Distribution Date;

               (xi) to the Holders of the Class B-2 Certificates, the Accrued
          Certificate Interest thereon for such Distribution Date, plus any
          Accrued Certificate Interest thereon remaining unpaid from any
          previous Distribution Date, except as provided below;

               (xii) to the Holders of the Class B-2 Certificates, an amount
          equal to the Subordinate Principal Distribution Amount for such Class
          of Certificates for such Distribution Date;

               (xiii) to the Holders of the Class B-3 Certificates, an amount
          equal to (x) the Accrued Certificate Interest thereon for such
          Distribution Date, plus any Accrued Certificate Interest thereon
          remaining unpaid from any previous Distribution Date, except as
          provided below;

               (xiv) to the Holders of the Class B-3 Certificates, an amount
          equal to (x) the Subordinate Principal Distribution Amount for such
          Class of Certificates for such Distribution Date;

               (xv) to the Class A Certificateholders and Class R
          Certificateholders in the priority set forth in Section 4.01(d), the
          portion, if any, of the Available Distribution Amount remaining after
          the foregoing distributions, applied to reduce the Certificate
          Principal Balances of such Class A and Class R Certificates, but in no
          event more than the aggregate of the outstanding Certificate Principal
          Balances of each such Class of Class A and Class R Certificates, and
          thereafter, to each Class of Class M Certificates then outstanding
          beginning with such Class with the lowest numerical designation, any
          portion of the Available Distribution Amount remaining after the Class
          A Certificates and Class R Certificates have been retired, applied to
          reduce the Certificate Principal Balance of each such Class of Class M
          Certificates, but in no event more than the outstanding Certificate
          Principal Balance of each such Class of Class M Certificates; and
          thereafter to each such Class of Class B Certificates then outstanding
          beginning with such Class with the lowest numerical designation, any
          portion of the Available Distribution Amount remaining 

<PAGE>

                                      -70-


          after the Class M Certificates have been retired, applied to reduce
          the Certificate Principal Balance of each such Class of Class B
          Certificates, but in no event more than the outstanding Certificate
          Principal Balance of each such Class of Class B Certificates; and

               (xvi) to the Class R Certificateholders, the balance, if any, of
          the Available Distribution Amount.

          (d) Distributions of principal on the Class A Certificates (other than
the Variable Strip Certificates) and Class R Certificates on each Distribution
Date occurring prior to the occurrence of the Credit Support Depletion Date will
be made as follows:

               (i) first, to the Residual Certificates, in reduction of the
          Certificate Principal Balance thereof, until the Certificate Principal
          Balance thereof has been reduced to zero; and

               (ii) second, an amount equal to the balance of the Senior
          Principal Distribution Amount remaining after the distributions
          described in clause (i) above, to the Class A-1 and Class A-2
          Certificates on a pro rata basis, based on the respective Certificate
          Principal Balances thereof, until the Certificate Principal Balances
          thereof have been reduced to zero.

          (e) On or after the occurrence of the Credit Support Depletion Date,
all priorities relating to distributions as described above in respect of
principal among the Senior Certificates will be disregarded and the Senior
Principal Distribution Amount will be distributed to the Senior Certificates pro
rata in accordance with their respective outstanding Certificate Principal
Balances and the Senior Interest Distribution Amount will be distributed as set
forth in Section 4.01(c)(i) above;

          (f) Each distribution with respect to a Book-Entry Certificate shall
be paid to the Depository, as Holder thereof, and the Depository shall be
responsible for crediting the amount of such distribution to the accounts of its
Depository Participants in accordance with its normal procedures. Each
Depository Participant shall be responsible for disbursing such distribution to
the Certificate Owners that it represents and to each indirect participating
brokerage firm (a "brokerage firm" or "indirect participating firm") for which
it acts as agent. Each brokerage firm shall be responsible for disbursing funds
to the Certificate Owners that it represents. None of the Trustee, the Depositor
or the Master Servicer shall have any responsibility therefor except as
otherwise provided by this Agreement or applicable law.

          (g) The Trustee shall, upon written direction from the Master
Servicer, invest or cause the institution maintaining the Certificate Account to
invest the funds in the Certificate

<PAGE>

                                      -71-


Account in Permitted Investments designated in the name of the Trustee for the
benefit of the Certificateholders, which shall mature not later than the
Business Day next preceding the Distribution Date next following the date of
such investment (except that (i) any investment in the institution with which
the Certificate Account is maintained may mature on such Distribution Date and
(ii) any other investment may mature on such Distribution Date if the Trustee
shall advance funds on such Distribution Date to the Certificate Account in the
amount payable on such investment on such Distribution Date, pending receipt
thereof to the extent necessary to make distributions on the Certificates and
the Excess Servicing Strip) and shall not be sold or disposed of prior to
maturity. 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. The amount of any losses incurred in respect of any such
investments shall be deposited in the Certificate Account by the Master Servicer
out of its own funds immediately as realized without any right of reimbursement.

          (h) Except as otherwise provided in Section 9.01, if the Master
Servicer anticipates that a final distribution with respect to any Class of
Certificates will be made on the next Distribution Date, the Master Servicer
shall, no later than the Determination Date in the month of such final
distribution, notify the Trustee and the Trustee shall, no later than two (2)
Business Days after such Determination Date, mail on such date to each Holder of
such Class of Certificates a notice to the effect that: (i) the Trustee
anticipates that the final distribution with respect to such Class of
Certificates will be made on such Distribution Date but only upon presentation
and surrender of such Certificates at the office of the Trustee or as otherwise
specified therein, and (ii) no interest shall accrue on such Certificates from
and after the end of the prior calendar month.

          Any funds not distributed to any Holder or Holders of Certificates of
such Class on such Distribution Date because of the failure of such Holder or
Holders to tender their Certificates shall, on such date, be set aside and held
in trust and credited to the account of the appropriate non-tendering Holder or
Holders. If any Certificates as to which notice has been given pursuant to this
Section 4.01(h) shall not have been surrendered for cancellation within six
months after the time specified in such notice, the Trustee shall mail a second
notice to the remaining non-tendering Certificateholders to surrender their
Certificates for cancellation in order to receive the final distribution with
respect thereto. If within six months after the second notice all such
Certificates shall not have been surrendered for cancellation, the Trustee shall
take reasonable steps as directed by the Depositor, or appoint an agent to take
reasonable steps, to contact the remaining non-tendering Certificateholders
concerning surrender of their Certificates. The costs and expenses of
maintaining the funds in trust and of contacting such Certificateholders shall
be paid out of the assets remaining in the Trust Fund. If within nine months
after the second notice any such Certificates shall not have been surrendered
for cancellation, the Class R Certificateholders shall be entitled to all
unclaimed funds and other assets which remain subject hereto. No interest shall
accrue or be payable to any Certificateholder on any amount held in trust

<PAGE>

                                      -72-


as a result of such Certificateholder's failure to surrender its Certificate(s)
for final payment thereof in accordance with this Section 4.01(h).

          SECTION 4.02. Statements to Certificateholders.

          On each Distribution Date the Trustee shall forward or cause to be
forwarded by mail to each Holder of a Certificate and to the Depositor, the
Master Servicer and the Rating Agencies, a statement based on information
provided by the Master Servicer as to such distribution setting forth:

          (i) (a) the amount of such distribution to the Certificateholders of
     each Class applied to reduce the Certificate Principal Balance thereof, and
     (b) the aggregate amount included therein representing Principal
     Prepayments;

          (ii) the amount of such distribution to Holders of each Class of
     Certificates and the Excess Servicing Strip allocable to interest;

          (iii) if the distribution to the Holders of any Class of Certificates
     or the Excess Servicing Strip is less than the full amount that would be
     distributable to such Holders if there were sufficient funds available
     therefor, the amount of the shortfall;

          (iv) the aggregate amount of Advances included in such distribution as
     of the close of business on such Distribution Date;

          (v) the number and aggregate Stated Principal Balance of the Mortgage
     Loans at the close of business on such Distribution Date;

          (vi) the aggregate Certificate Principal Balance of each Class of
     Certificates, and each of the Senior, Class M and Class B Percentages,
     after giving effect to the amounts distributed on such Distribution Date,
     separately identifying any reduction thereof due to Realized Losses other
     than pursuant to an actual distribution of principal;

          (vii) the related Subordinate Principal Distribution Amount and
     Prepayment Distribution Percentage, if applicable;

          (viii) the number and aggregate Stated Principal Balance of Mortgage
     Loans (a) delinquent 31 to 60 days, (b) delinquent 61 to 90 days, (c)
     delinquent 91 days or more;

          (ix) the number, aggregate principal balance and book value of any REO
     Properties;

<PAGE>

                                      -73-


          (x) the aggregate Accrued Certificate Interest remaining unpaid, if
     any, for each Class of Certificates or the Excess Servicing Strip, after
     giving effect to the distribution made on such Distribution Date;

          (xi) the Special Hazard Amount, Fraud Loss Amount and Bankruptcy
     Amount as of the close of business on such Distribution Date and a
     description of any change in the calculation of such amounts;

          (xii) the weighted average Pool Strip Rate for such Distribution Date,
     the Pass-Through Rate on the Class A-3 Certificates and the Pass-Through
     Rate on the Excess Servicing Strip;

          (xiii) the occurrence of the Credit Support Depletion Date;

          (xiv) the Senior Accelerated Distribution Percentage applicable to
     such distribution;

          (xv) the Senior Percentage and Lockout Percentage for such
     Distribution Date;

          (xvi) the aggregate amount of Realized Losses for such Distribution
     Date;

          (xvii) the aggregate amount of any recoveries on previously foreclosed
     loans from the Seller due to a breach of representation or warranty;

          (xviii) the weighted average remaining term to maturity of the
     Mortgage Loans after giving effect to the amounts distributed on such
     Distribution Date; and

          (xix) the weighted average Mortgage Rates of the Mortgage Loans after
     giving effect to the amounts distributed on such Distribution Date.

          In the case of information furnished pursuant to subclauses (i)-(iii)
above, the amounts shall also be expressed as a dollar amount per Single
Certificate.

          Within a reasonable period of time after the end of each calendar
year, the Trustee shall prepare and forward, to each Person who at any time
during the calendar year was a Holder of a Senior or Subordinate Certificate, a
statement containing the information set forth in subclauses (i)-(iii) above,
aggregated for such calendar year or applicable portion thereof during which
such person was a Certificateholder. Such obligation of the Trustee shall be
deemed to have been satisfied to the extent that substantially comparable
information shall be provided by the Trustee pursuant to any requirements of the
Code and regulations thereunder as from time to time are in force.

<PAGE>

                                      -74-


          On each Distribution Date the Trustee shall prepare and forward, to
each Holder of a Residual Certificate a copy of the reports forwarded to the
other Certificateholders on such Distribution Date.

          Within a reasonable period of time after the end of each calendar
year, the Trustee shall prepare and forward, to each Person who at any time
during the calendar year was a Holder of a Residual Certificate a statement
containing the information provided pursuant to the previous paragraph
aggregated for such calendar year or applicable portion thereof during which
such Person was a Certificateholder. Such obligation of the Trustee shall be
deemed to have been satisfied to the extent that substantially comparable
information shall be provided by the Trustee pursuant to any requirements of the
Code as from time to time are in force.

          SECTION 4.03. Remittance Reports; Advances by the Master Servicer.

          (a) On the Business Day following each Determination Date, the Master
Servicer shall deliver to the Trustee a report, prepared as of the close of
business on the Determination Date (the "Determination Date Report"), in the
form of an electromagnetic tape or disk. The Determination Date Report and any
written information supplemental thereto shall include such information with
respect to the Mortgage Loans that is required by the Trustee for purposes of
making the calculations and preparing the statement described in Sections 4.01
and 4.02, as set forth in written specifications or guidelines issued by the
Trustee from time to time. Not later than 11:00 A.M. California time on each
Certificate Account Deposit Date, the Trustee shall furnish by telecopy to the
Master Servicer a statement setting forth (i) the Available Distribution Amount
and (ii) the amounts required to be withdrawn from the Custodial Account and
deposited into the Certificate Account with respect to the immediately
succeeding Distribution Date pursuant to clause (iii) of Section 4.01(a). The
Trustee shall have no obligation to recompute, recalculate or verify any
information provided to it by the Master Servicer. The determination by the
Trustee of such amounts shall, in the absence of obvious error, be presumptively
deemed to be correct for all purposes hereunder.

          (b) Not later than 2:00 P.M. New York time on each Certificate Account
Deposit Date, the Trustee shall notify the Master Servicer of the aggregate
amount of Advances required to be made for the related Distribution Date, which
shall be in an aggregate amount equal to the sum of the aggregate amount of
Monthly Payments (with each interest portion thereof adjusted to the Mortgage
Rate less the Master Servicing Fee), less the amount of any related Debt Service
Reductions or reductions in the amount of interest collectable from the
Mortgagor pursuant to the Relief Act, on the Outstanding Mortgage Loans as of
the related Due Date, which Monthly Payments were delinquent as of the close of
business as of the related Determination Date; provided that no Advance shall be
made if it would be a Nonrecoverable Advance. On or before 4:00 P.M. New York
time on each Certificate Account Deposit Date, the Master Servicer shall either
(i) deposit in the Certificate Account from its own funds, or funds received
therefor

<PAGE>

                                      -75-


from the Sub-Servicers, an amount equal to the Advances to be made by the Master
Servicer in respect of the related Distribution Date, (ii) withdraw from amounts
on deposit in the Custodial Account and deposit in the Certificate Account all
or a portion of the amounts held for future distribution in discharge of any
such Advance, or (iii) make advances in the form of any combination of (i) and
(ii) aggregating the amount of such Advance. Any portion of the amounts held for
future distribution so used shall be replaced by the Master Servicer by deposit
in the Certificate Account on or before 1:00 P.M. New York time on any future
Certificate Account Deposit Date to the extent that funds attributable to the
Mortgage Loans that are available in the Custodial Account for deposit in the
Certificate Account on such Certificate Account Deposit Date shall be less than
payments to Certificateholders required to be made on the following Distribution
Date. The amount of any reimbursement pursuant to Section 3.11 in respect of
outstanding Advances on any Distribution Date shall be allocated to specific
Monthly Payments due but delinquent for previous Due Periods, which allocation
shall be made, to the extent practicable, to Monthly Payments which have been
delinquent for the longest period of time. Such allocations shall be conclusive
for purposes of reimbursement to the Master Servicer from recoveries on related
Mortgage Loans pursuant to Section 3.11. The determination by the Master
Servicer that it has made a Nonrecoverable Advance or that any proposed Advance,
if made, would constitute a Nonrecoverable Advance, shall be evidenced by a
certificate of a Servicing Officer delivered to the Seller and the Trustee with
the Determination Date Report. The Trustee shall deposit all funds it receives
pursuant to this Section 4.03 into the Certificate Account.

          (c) In the event that the Master Servicer determines as of any
Certificate Account Deposit Date that it will be unable to deposit in the
Certificate Account an amount equal to the Advance required to be made for the
immediately succeeding Distribution Date in the amount determined by the Trustee
pursuant to paragraph (b) above, it shall give notice to the Trustee of its
inability to Advance (such notice may be given by telecopy), not later than 4:00
P.M., New York time, on such date, specifying the portion of such amount that it
will be unable to deposit. Not later than 4:00 P.M., New York time, on the
earlier of (x) two Business Days following such Certificate Account Deposit Date
or (y) the Business Day preceding the related Distribution Date, unless by such
time the Master Servicer shall have directly or indirectly deposited in the
Certificate Account the entire amount of the Advances required to be made for
the related Distribution Date, pursuant to Section 7.01, the Trustee shall (a)
terminate all of the rights and obligations of the Master Servicer under this
Agreement in accordance with Section 7.01 and (b) assume the rights and
obligations of the Master Servicer hereunder, including the obligation to
deposit in the Certificate Account an amount equal to the Advance for the
immediately succeeding Distribution Date.

<PAGE>

                                      -76-


          SECTION 4.04. Allocation of Realized Losses.

          Prior to each Distribution Date, the Master Servicer shall determine
the total amount of Realized Losses, if any, that resulted from any Cash
Liquidation, Debt Service Reduction, Deficient Valuation or REO Disposition that
occurred during the related Prepayment Period. The amount of each Realized Loss
shall be evidenced by an Officers' Certificate. All Realized Losses, other than
Excess Special Hazard Losses, Extraordinary Losses, Excess Bankruptcy Losses or
Excess Fraud Losses, shall be allocated as follows: first, to the Class B-3
Certificates until the Certificate Principal Balance thereof has been reduced to
zero; second, to the Class B-2 Certificates until the Certificate Principal
Balance thereof has been reduced to zero; third, to the Class B-1 Certificates
until the Certificate Principal Balance thereof has been reduced to zero;
fourth, to the Class M-3 Certificates until the Certificate Principal Balance
thereof has been reduced to zero; fifth, to the Class M-2 Certificates until the
Certificate Principal Balance thereof has been reduced to zero; sixth, to the
Class M-1 Certificates until the Certificate Principal Balance thereof has been
reduced to zero; and thereafter, the entire amount of such Realized Losses on
Mortgage Loans among all the Class A Certificates and Class R Certificates and
the Excess Servicing Strip, on a pro rata basis, as described below. Any Excess
Special Hazard Losses, Excess Bankruptcy Losses, Excess Fraud Losses and
Extraordinary Losses on the Mortgage Loans will be allocated among the Class A,
Class M, Class B and Class R Certificates and the Excess Servicing Strip, on a
pro rata basis, as described below.

          As used herein, an allocation of a Realized Loss on a "pro rata basis"
among two or more specified Classes of Certificates and the Excess Servicing
Strip means an allocation on a pro rata basis, among the various Classes so
specified, to each such Class of Certificates on the basis of their then
outstanding Certificate Principal Balances prior to giving effect to
distributions to be made on such Distribution Date in the case of the principal
portion of a Realized Loss or among the various Classes so specified and Excess
Servicing Strip based on the Accrued Certificate Interest thereon payable on
such Distribution Date (without regard to any Compensating Interest for such
Distribution Date) in the case of an interest portion of a Realized Loss. Any
allocation of the principal portion of Realized Losses (other than Debt Service
Reductions) to the Class B Certificates or, after the Certificate Principal
Balances of the Class B Certificates have been reduced to zero, to the Class of
Class M Certificates then outstanding with the highest numerical designation
shall be made by operation of the definition of "Certificate Principal Balance"
and by operation of the provisions of Section 4.01. Allocations of the interest
portions of Realized Losses shall be made by operation of the definition of
"Accrued Certificate Interest" and by operation of the provisions of Section
4.01. Allocations of the principal portion of Debt Service Reductions shall be
made by operation of the provisions of Section 4.01. All Realized Losses and all
other losses allocated to a Class of Certificates hereunder will be allocated
among the Certificates of such Class in proportion to the Percentage Interests
evidenced thereby.

<PAGE>

                                      -77-


          SECTION 4.05. Information Reports to Be Filed by the Master Servicer.

          The Master Servicer or the Sub-Servicers shall file information
reports with respect to the receipt of mortgage interest received in a trade or
business, foreclosures and abandonments of any Mortgaged Property and the
information returns relating to cancellation of indebtedness income with respect
to any Mortgaged Property required by Sections 6050H, 6050J and 6050P of the
Code, respectively, and deliver to the Trustee an Officers' Certificate stating
that such reports have been filed. Such reports shall be in form and substance
sufficient to meet the reporting requirements imposed by such Sections 6050H,
6050J and 6050P of the Code.

          SECTION 4.06. Compliance with Withholding Requirements.

          Notwithstanding any other provision of this Agreement, the Trustee
shall comply with all federal withholding requirements respecting payments to
Certificateholders of interest or original issue discount on the Mortgage Loans,
that the Trustee reasonably believes are applicable under the Code. The consent
of Certificateholders shall not be required for such withholding. In the event
the Trustee withholds any amount from interest or original issue discount
payments or advances thereof to any Certificateholder pursuant to federal
withholding requirements, the Trustee shall, together with its monthly report to
such Certificateholders pursuant to Section 4.02 hereof, indicate such amount
withheld.

<PAGE>

                                      -78-

                                    ARTICLE V

                                THE CERTIFICATES


          SECTION 5.01. The Certificates.

          (a) The Certificates will be substantially in the respective forms
annexed hereto as Exhibits A-1, B-1, B-2 and B-3. The Certificates will be
issuable in registered form only. The Class A Certificates (other than the
Variable Strip Certificates) and the Class M Certificates will be issued in
minimum denominations of $25,000 and integral multiples of $1 in excess thereof.
The Class B Certificates of each Class will be offered in registered,
certificated form in minimum denominations of $25,000 and integral multiples of
$1,000 in excess thereof, with one Certificate of each such Class evidencing the
remainder of the aggregate initial Certificate Principal Balance of such Class.
The Variable Strip Certificates and the Residual Certificates will each be
issuable in minimum denominations of any Percentage Interest representing 5% and
multiples of 0.01% in excess thereof.

          Upon original issue, the Certificates shall, upon the written request
of the Depositor executed by an officer of the Depositor, be executed and
delivered by the Trustee, authenticated by the Trustee and delivered to or upon
the order of the Depositor upon receipt by the Trustee of the documents
specified in Section 2.01. The Certificates shall be executed by manual or
facsimile signature on behalf of the Trustee in its capacity as trustee
hereunder by a Responsible Officer. Certificates bearing the manual or facsimile
signatures of individuals who were at the time they signed the proper officers
of the Trustee shall bind the Trustee, notwithstanding that such individuals or
any of them have ceased to hold such offices prior to the authentication and
delivery of such Certificates or did not hold such offices at the date of such
Certificates. 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 the Trustee by manual signature, and such certificate upon any
Certificate shall be conclusive evidence, and the only evidence, that such
Certificate has been duly authenticated and delivered hereunder. All
Certificates issued on the Closing Date shall be dated the Closing Date and any
Certificates delivered thereafter shall be dated the date of their
authentication.

          (b) The Class A Certificates (other than the Class A-3 Certificates)
shall initially be issued as one or more Certificates registered in the name of
the Depository or its nominee and, except as provided below, registration of
such Certificates may not be transferred by the Trustee except to another
Depository that agrees to hold such Certificates for the respective Certificate
Owners with Ownership Interests therein. The Certificate Owners shall hold their
respective Ownership Interests in and to each of such Class A Certificates
(except for such remainders) through the book-entry facilities of the Depository
and, except as provided below, shall not be

<PAGE>

                                      -79-


entitled to Definitive Certificates in respect of such Ownership Interests. All
transfers by Certificate Owners of their respective Ownership Interests in the
Book-Entry Certificates shall be made in accordance with the procedures
established by the Depository Participant or brokerage firm representing such
Certificate Owner. Each Depository Participant shall transfer the Ownership
Interests only in the Book-Entry Certificates of Certificate Owners it
represents or of brokerage firms for which it acts as agent in accordance with
the Depository's normal procedures.

          The Trustee, the Master Servicer and the Depositor may for all
purposes (including the making of payments due on the respective Classes of
Book-Entry Certificates) deal with the Depository as the authorized
representative of the Certificate Owners with respect to the respective Classes
of Book-Entry Certificates for the purposes of exercising the rights of
Certificateholders hereunder. The rights of Certificate Owners with respect to
the respective Classes of Book-Entry Certificates shall be limited to those
established by law and agreements between such Certificate Owners and the
Depository Participants and brokerage firms representing such Certificate
Owners. Multiple requests and directions from, and votes of, the Depository as
Holder of any Class of Book-Entry Certificates with respect to any particular
matter shall not be deemed inconsistent if they are made with respect to
different Certificate Owners. The Trustee may establish a reasonable record date
in connection with solicitations of consents from or voting by
Certificateholders and shall give notice to the Depository of such record date.

          If (i)(A) the Depositor advises the Trustee in writing that the
Depository is no longer willing or able to properly discharge its
responsibilities as Depository and (B) the Depositor is unable to locate a
qualified successor or (ii) the Depositor at its option advises the Trustee in
writing that it elects to terminate the book-entry system through the
Depository, the Trustee shall notify all Certificate Owners, through the
Depository, 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 Depository,
accompanied by registration instructions from the Depository for registration of
transfer, the Trustee shall, at the expense of the Depositor, issue the
Definitive Certificates. Neither the Depositor, the Master Servicer nor the
Trustee shall be liable for any actions taken by the Depository or its nominee,
including, without limitation, 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 the Trustee and the
Master Servicer shall recognize the Holders of the Definitive Certificates as
Certificateholders hereunder.

          SECTION 5.02. Registration of Transfer and Exchange of Certificates.

          (a) The Trustee shall maintain a Certificate Register in which,
subject to such reasonable regulations as it may prescribe, the Trustee shall
provide for the registration of Certificates and of transfers and exchanges of
Certificates as herein provided.

<PAGE>

                                      -80-


          (b) Except as provided in Section 5.02(c), no transfer, sale, pledge
or other disposition of a Subordinate Certificate shall be made unless such
transfer, sale, pledge or other disposition is exempt from the registration
requirements of the Securities Act of 1933, as amended (the "Act"), and any
applicable state securities laws or is made in accordance with said Act and
laws. In the event that a transfer of a Subordinate Certificate is to be made
under this Section 5.02(b), (i) the Trustee shall require an Opinion of Counsel
acceptable to and in form and substance satisfactory to the Trustee that such
transfer shall be made pursuant to an exemption, describing the applicable
exemption and the basis therefor, from said Act and laws or is being made
pursuant to said Act and laws, which Opinion of Counsel shall not be an expense
of the Trustee, the Depositor or the Master Servicer, provided that such Opinion
of Counsel will not be required in connection with the initial transfer of any
such Certificate by the Depositor or any affiliate thereof, to a non-affiliate
of the Depositor and (ii) the Trustee shall require the transferee to execute a
representation letter, substantially in the form of Exhibit G-1 hereto, and the
Trustee shall require the transferor to execute a representation letter,
substantially in the form of Exhibit G-2 hereto, each acceptable to and in form
and substance satisfactory to the Trustee certifying to the Depositor and the
Trustee the facts surrounding such transfer, which representation letters shall
not be an expense of the Trustee, the Depositor or the Master Servicer; provided
however that such representation letters will not be required in connection with
any transfer of any such Certificate by the Depositor to an affiliate of the
Depositor and the Trustee shall be entitled to conclusively rely upon a
representation (which, upon the request of the Trustee, shall be a written
representation) from the Depositor of the status of such transferee as an
affiliate of the Depositor. Any such Certificateholder desiring to effect such
transfer shall, and does hereby agree to, indemnify the Trustee, the Depositor
and the Master Servicer against any liability that may result if the transfer is
not so exempt or is not made in accordance with such applicable federal and
state laws.

          (c) Notwithstanding the requirements of Section 5.02(b), transfers of
Subordinate Certificates may be made in accordance with this Section 5.02(c) if
the prospective transferee of a Certificate provides the Trustee and the
Depositor with an investment letter substantially in the form of Exhibit G-3
attached hereto, which investment letter shall not be an expense of the Trustee,
the Depositor or the Master Servicer, and which investment letter states that,
among other things, such transferee is a "qualified institutional buyer" as
defined under Rule 144A. Such transfers shall be deemed to have complied with
the requirements of Section 5.02(b) hereof; provided, however, that no Transfer
of any of the Subordinate Certificates may be made pursuant to this Section
5.02(c) by the Depositor. Any such Certificateholder desiring to effect such
transfer shall, and does hereby agree to, indemnify the Trustee, the Depositor
and the Master Servicer against any liability that may result if the transfer is
not so exempt or is not made in accordance with such applicable federal and
state laws.

          (d) The Trustee shall require an Opinion of Counsel from a prospective
transferee prior to the transfer of any Variable Strip, Class B or Residual
Certificate to any 

<PAGE>

                                      -81-


employee benefit plan or other retirement arrangement, including individual
retirement accounts and Keogh plans, that is subject to Section 406 of the
Employee Retirement Income Security Act of 1974, as amended ("ERISA") or Section
4975 of the Code (any of the foregoing, a "Plan"), to a trustee or other Person
acting on behalf of any Plan, or to any other person who is using "plan assets"
of any Plan to effect such acquisition (including any insurance company using
funds in its general or separate accounts that may constitute "plan assets").
Such Opinion of Counsel must establish to the satisfaction of the Trustee that
such disposition will not violate the prohibited transaction provisions of
Section 406 of ERISA and Section 4975 of the Code. Neither the Depositor, the
Master Servicer nor the Trustee will be required to obtain such Opinion of
Counsel on behalf of any prospective transferee. In lieu of such Opinion of
Counsel, the Trustee shall require a certification in the form of Exhibit G-6
(or in a form substantially similar to such Exhibit G-6 as shall be agreed upon
by the Trustee), in the case of the transfer of any of the foregoing
Certificates to a person capable of providing such certification, substantially
to the effect that all funds used by such transferee to purchase such
Certificates will be funds held by it in its general account which it reasonably
believes do not constitute "plan assets" of any Plan (as defined above);
provided however that such certification will not be required in connection with
any transfer of any such Certificate by the Depositor to an affiliate of the
Depositor and the Trustee shall be entitled to conclusively rely upon a
representation (which, upon the request of the Trustee, shall be a written
representation) from the Depositor of the status of such transferee as an
affiliate of the Depositor. The permission of any transfer in violation of the
restriction on transfer set forth in this paragraph shall not constitute a
default or an Event of Default.

          Any person purchasing a Class M Certificate shall be deemed to have
represented that either: (i) such person is not a Plan subject to ERISA or the
Code (or comparable provisions of any subsequent enactments) and is not acting,
directly or indirectly, on behalf of any such Plan or acquiring such Certificate
with Plan Assets; or (ii) the purchase of such Certificate is permissible under
applicable law, will not constitute or result in any non-exempt prohibited
transaction under ERISA or Section 4975 of the Code, will not subject the
Depositor, the Trustee or the Master Servicer to any obligation or liability
(including obligations or liabilities under ERISA or Section 4975 of the Code)
in addition to those undertaken in this Agreement and the exemptive relief
granted by the DOL pursuant to Prohibited Transaction Class Exemption 95-60 is
available with respect to the purchase, sale and holding of such Certificate.

          (e) (i) Each Person who has or who acquires any Ownership Interest in
a Residual Certificate shall be deemed by the acceptance or acquisition of such
Ownership Interest to have agreed to be bound by the following provisions and to
have irrevocably authorized the Trustee or its designee under clause (iii)(A)
below to deliver payments to a Person other than such Person and to negotiate
the terms of any mandatory sale under clause (iii)(B) below and to execute all
instruments of transfer and to do all other things necessary in connection with
any such sale. The rights of each Person acquiring any Ownership Interest in a
Residual Certificate are expressly subject to the following provisions:

<PAGE>

                                      -82-


          (A) Each Person holding or acquiring any Ownership Interest in a
     Residual Certificate shall be a Permitted Transferee and shall promptly
     notify the Trustee of any change or impending change in its status as a
     Permitted Transferee.

          (B) In connection with any proposed Transfer of any Ownership Interest
     in a Residual Certificate, the Trustee shall require delivery to it, and
     shall not register the Transfer of any Residual Certificate until its
     receipt of (I) an affidavit and agreement (a "Transfer Affidavit and
     Agreement" in the form attached hereto as Exhibit G-5) from the proposed
     Transferee, in form and substance satisfactory to the Trustee representing
     and warranting, among other things, that it is a Permitted Transferee, that
     it is not acquiring its Ownership Interest in the Residual Certificate that
     is the subject of the proposed Transfer as a nominee, trustee or agent for
     any Person who is not a Permitted Transferee, that for so long as it
     retains its Ownership Interest in a Residual Certificate, it will endeavor
     to remain a Permitted Transferee, and that it has reviewed the provisions
     of this Section 5.02 and agrees to be bound by them, and (II) a
     certificate, in the form attached hereto as Exhibit G-4, from the Holder
     wishing to transfer the Residual Certificate, in form and substance
     satisfactory to the Trustee representing and warranting, among other
     things, that no purpose of the proposed Transfer is to impede the
     assessment or collection of tax.

          (C) Notwithstanding the delivery of a Transfer Affidavit and Agreement
     by a proposed Transferee under clause (B) above, if a Responsible Officer
     of the Trustee assigned to this transaction has actual knowledge that the
     proposed Transferee is not a Permitted Transferee, no Transfer of an
     Ownership Interest in a Residual Certificate to such proposed Transferee
     shall be effected.

          (D) Each Person holding or acquiring any Ownership Interest in a
     Residual Certificate shall agree (x) to require a Transfer Affidavit and
     Agreement from any other Person to whom such Person attempts to transfer
     its Ownership Interest in a Residual Certificate and (y) not to transfer
     its Ownership Interest unless it provides a certificate to the Trustee in
     the form attached hereto as Exhibit G-4.

          (E) Each Person holding or acquiring an Ownership Interest in a
     Residual Certificate, by purchasing an Ownership Interest in such
     Certificate, agrees to give the Trustee written notice that it is a
     "pass-through interest holder" within the meaning of Temporary Treasury
     Regulations Section 1.67-3T(a)(2)(i)(A) immediately upon acquiring an
     Ownership Interest in a Residual Certificate, if it is "a pass-through
     interest holder", or is holding an Ownership Interest in a Residual
     Certificate on behalf of a "pass-through interest holder."

<PAGE>

                                      -83-


          (ii) The Trustee will register the Transfer of any Residual
Certificate only if it shall have received the Transfer Affidavit and Agreement
in the form attached hereto as Exhibit G-5, a certificate of the Holder
requesting such transfer in the form attached hereto as Exhibit G-4 and all of
such other documents as shall have been reasonably required by the Trustee as a
condition to such registration. Transfers of the Residual Certificates other
than to Permitted Transferees are prohibited.

          (iii) (A) If any Person other than a Permitted Transferee shall become
a Holder of a Residual Certificate, then the last preceding Permitted Transferee
shall be restored, to the extent permitted by law, to all rights and obligations
as Holder thereof retroactive to the date of registration of such Transfer of
such Residual Certificate. If a transfer of a Residual Certificate is
disregarded pursuant to the provisions of Treasury Regulations Section 1.860E-1
or Section 1.860G-3, then the last preceding Permitted Transferee shall be
restored, to the extent permitted by law, to all rights and obligations as
Holder thereof retroactive to the date of registration of such 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 5.02 or for making any payments due on such
Certificate to the holder thereof or for taking any other action with respect to
such holder under the provisions of this Agreement.

               (B) If any purported Transferee shall become a Holder of a
Residual Certificate in violation of the restrictions in this Section 5.02 and
to the extent that the retroactive restoration of the rights of the Holder of
such Residual Certificate as described in clause (iii)(A) above shall be
invalid, illegal or unenforceable, then the Trustee shall have the right,
without notice to the holder or any prior holder of such Residual Certificate,
to sell such Residual Certificate to a purchaser selected by the Trustee on such
terms as the Trustee may choose. Such purported Transferee shall promptly
endorse and deliver each Residual Certificate in accordance with the
instructions of the Trustee. Such purchaser may be the Trustee itself. The
proceeds of such sale, net of the commissions (which may include commissions
payable to the Trustee), expenses and taxes due, if any, will be remitted by the
Trustee to such purported Transferee. The terms and conditions of any sale under
this clause (iii)(B) shall be determined in the sole discretion of the Trustee,
and the Trustee shall not be liable to any Person having an Ownership Interest
in a Residual Certificate as a result of its exercise of such discretion.

                  (iv) The Trustee shall make available to the Internal Revenue
Service and those Persons specified by the REMIC Provisions, all information
necessary to compute any tax imposed (A) as a result of the transfer of an
ownership interest in a Residual Certificate to any Person who is a Disqualified
Organization, including the information regarding "excess inclusions" of such
Residual Certificates required to be provided to the Internal Revenue Service
and certain Persons as described in Treasury Regulations Sections 1.860D-1(b)(5)
and 1.860E-2(a)(5), and (B) as a result of any regulated investment company,
real estate investment trust, common trust fund, partnership, trust, estate or
organization described in Section 1381 of the Code that holds an

<PAGE>

                                      -84-


Ownership Interest in a Residual Certificate having as among its record holders
at any time any Person who is a Disqualified Organization. The Trustee may
charge and shall be entitled to reasonable compensation for providing such
information as may be required from those Persons which may have had a tax
imposed upon them as specified in clauses (A) and (B) of this paragraph for
providing such information.

          (f) Subject to the preceding paragraphs, upon surrender for
registration of transfer of any Certificate at the office of the Trustee
maintained for such purpose, the Trustee shall execute and the Trustee shall
authenticate and deliver, in the name of the designated transferee or
transferees, one or more new Certificates of the same Class of a like aggregate
Percentage Interest. Every Certificate surrendered for transfer shall be
accompanied by notification of the account of the designated transferee or
transferees for the purpose of receiving distributions pursuant to Section 4.01
by wire transfer, if any such transferee desires and is eligible for
distribution by wire transfer.

          (g) At the option of the Certificateholders, Certificates may be
exchanged for other Certificates of authorized denominations of the same Class
of a like aggregate Percentage Interest, upon surrender of the Certificates to
be exchanged at the office of the Trustee. Whenever any Certificates are so
surrendered for exchange the Trustee shall execute, authenticate and deliver the
Certificates which the Certificateholder making the exchange is entitled to
receive. Every Certificate presented or surrendered for transfer or exchange
shall (if so required by the Trustee) be duly endorsed by, or be accompanied by
a written instrument of transfer in the form satisfactory to the Trustee duly
executed by, the Holder thereof or his attorney duly authorized in writing.

          (h) No service charge shall be made to the Certificateholders for any
transfer or exchange of Certificates, but the Trustee may require payment of a
sum sufficient to cover any tax or governmental charge that may be imposed in
connection with any transfer or exchange of Certificates.

          (i) All Certificates surrendered for transfer and exchange shall be
cancelled and retained by the Trustee in accordance with the Trustee's standard
procedures.

          SECTION 5.03. Mutilated, Destroyed, Lost or Stolen Certificates.

          If (i) any mutilated Certificate is surrendered to the Trustee and the
Trustee receives evidence to its satisfaction of the destruction, loss or theft
of any Certificate, and (ii) there is delivered to the Trustee such security or
indemnity as may be required by it to save it harmless, then, in the absence of
notice to the Trustee that such Certificate has been acquired by a bona fide
purchaser, the Trustee shall execute, authenticate and deliver, in exchange for
or in lieu of any such mutilated, destroyed, lost or stolen Certificate, a new
Certificate of the same Class and Percentage Interest. Upon the issuance of any
new Certificate under this Section, the Trustee may

<PAGE>

                                      -85-


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) connected therewith. Any replacement
Certificate issued pursuant to this Section shall constitute complete and
indefeasible evidence of ownership in the Trust Fund, as if originally issued,
whether or not the lost, stolen or destroyed Certificate shall be found at any
time.

          SECTION 5.04. Persons Deemed Owners.

          The Depositor, the Master Servicer, the Trustee and any agent of any
of them may treat the person in whose name any Certificate is registered as the
owner of such Certificate for the purpose of receiving distributions pursuant to
Section 4.01 and for all other purposes whatsoever, and neither the Depositor,
the Master Servicer, the Trustee nor any agent of any of them shall be affected
by notice to the contrary.


<PAGE>

                                      -86-

                                   ARTICLE VI

                      THE DEPOSITOR AND THE MASTER SERVICER

          SECTION 6.01. Liability of the Depositor and the Master Servicer.

          The Depositor and the Master Servicer each shall be liable in
accordance herewith only to the extent of the obligations specifically imposed
upon and undertaken by the Depositor and the Master Servicer herein. Only the
Master Servicer, any successor Master Servicer or the Trustee acting as Master
Servicer shall be liable with respect to the servicing of the Mortgage Loans and
the REO Property for actions taken by any such Person in contravention of the
Master Servicer's duties hereunder.

          SECTION 6.02. Merger, Consolidation or Conversion of the Depositor or
                        the Master Servicer.

          The Depositor and the Master Servicer each will keep in full effect
its existence, rights and franchises as a corporation under the laws of the
state of its incorporation, and each will obtain and preserve its qualification
to do business as a foreign corporation in each jurisdiction in which such
qualification is or shall be necessary to protect the validity and
enforceability of this Agreement, the Certificates, the Excess Servicing Strip
or any of the Mortgage Loans and to perform its respective duties under this
Agreement.

          Any Person into which the Depositor or the Master Servicer may be
merged, consolidated or converted, or any corporation resulting from any merger
or consolidation to which the Depositor or the Master Servicer shall be a party,
or any Person succeeding to the business of the Depositor or the Master
Servicer, shall be the successor of the Depositor or the Master Servicer, as the
case may be, 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 surviving
Person to the Master Servicer shall be qualified to sell mortgage loans to and
service mortgage loans for FNMA or FHLMC.

          SECTION 6.03. Limitation on Liability of the Depositor, the Master
                        Servicer and Others.

          Neither the Depositor, the Master Servicer nor any of the directors,
officers, employees or agents of the Depositor or the Master Servicer shall be
under any liability to the Trust Fund 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 Depositor or the Master Servicer (but this
provision shall protect the above described persons) against any breach of
warranties or representations made

<PAGE>

                                      -87-


herein; and provided further that this provision shall not protect the
Depositor, the Master Servicer or any such person, against any liability which
would otherwise be imposed by reason of willful misfeasance, bad faith or gross
negligence in the performance of duties or by reason of reckless disregard of
obligations and duties hereunder. The Depositor, the Master Servicer and any
director, officer, employee or agent of the Depositor or 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 Depositor,
the Master Servicer and any director, officer, employee or agent of the
Depositor or the Master Servicer shall be indemnified and held harmless by the
Trust Fund against any loss, liability or expense incurred in connection with
any legal action relating to this Agreement, the Certificates or the Excess
Servicing Strip (including reasonable legal fees and disbursements of counsel),
other than (a) any loss, liability or expense related to Master Servicer's
servicing obligations with respect to any specific Mortgage Loan or Mortgage
Loans (except as any such loss, liability or expense shall be otherwise
reimbursable pursuant to this Agreement), or (b) any loss, liability or expense
incurred by reason of willful misfeasance, bad faith or gross negligence in the
performance of duties hereunder or by reason of reckless disregard of
obligations and duties hereunder. Neither the Depositor nor the Master Servicer
shall be under any obligation to appear in, prosecute or defend any legal action
which is not incidental to its respective duties under this Agreement and which
in its opinion may involve it in any expense or liability; provided, however,
that the Depositor or the Master Servicer may in its sole discretion undertake
any such action which it may deem necessary or desirable with 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 (except any action or
liability related to the Master Servicer's obligations under Section 3.01) shall
be expenses, costs and liabilities of the Trust Fund, and the Depositor and the
Master Servicer shall be entitled to be reimbursed therefor from the Certificate
Account as provided in Section 3.11, any such right of reimbursement being prior
to the rights of Certificateholders to receive any amount in the Certificate
Account.

          SECTION 6.04. Limitation on Resignation of the Master Servicer.

          The Master Servicer shall not resign from the obligations and duties
hereby imposed on it except (a) upon appointment of a successor servicer
reasonably acceptable to the Trustee upon receipt by the Trustee of a letter
from the Rating Agency that such a resignation and appointment will not, in and
of itself, result in a downgrading of the Certificates or (b) upon determination
that its duties hereunder are no longer permissible under applicable law. Any
such determination permitting the resignation of the Master Servicer shall be
evidenced by an Opinion of Counsel (at the expense of the resigning Master
Servicer) to such effect delivered to the Trustee. No such resignation shall
become effective until the Trustee or a successor servicer shall have assumed
the Master Servicer's responsibilities, duties, liabilities and obligations
hereunder.

          SECTION 6.05. Sale and Assignment of Master Servicing.

<PAGE>

                                      -88-


          The Master Servicer may sell and assign its rights and delegate its
duties and obligations in their entirety as Master Servicer under this
Agreement; PROVIDED, HOWEVER, that: (i) the purchaser or transferee accepting
such assignment and delegation (a) shall be a Person which shall be qualified to
service mortgage loans for FNMA or FHLMC; (b) shall, in the case of successor
master servicers only, have a net worth of not less than $10,000,000 (unless
otherwise approved by each Rating Agency pursuant to clause (ii) below); (c)
shall be reasonably satisfactory to the Trustee (as evidenced in a writing
signed by the Trustee) as having a comparable servicing ability to that of the
Master Servicer on the Closing Date; (d) shall execute and deliver to the
Trustee an agreement, in form and substance reasonably satisfactory to the
Trustee, which contains an assumption by such Person of the due and punctual
performance and observance of each covenant and condition to be performed or
observed by it as master servicer under this Agreement and any custodial
agreement, from and after the effective date of such agreement; (ii) each Rating
Agency shall be given prior written notice of the identity of the proposed
successor to the Master Servicer and each Rating Agency's rating of the
Certificates in effect immediately prior to such assignment, sale and delegation
will not be downgraded or withdrawn as a result of such assignment, sale and
delegation, as evidenced by a letter to such effect delivered to the Master
Servicer and the Trustee; and (iii) the Master Servicer assigning and selling
the master servicing shall deliver to the Trustee an Officer's Certificate and
an Opinion of Counsel, each stating that all conditions precedent to such action
under this Agreement have been completed and such action is permitted by and
complies with the terms of this Agreement. No such assignment or delegation
shall affect any liability of the Master Servicer arising prior to the effective
date thereof.

<PAGE>

                                      -89-


                                   ARTICLE VII

                                     DEFAULT

          SECTION 7.01. Events of Default.

          "Event of Default", wherever used herein, means any one of the
following events:

          (i) any failure by the Master Servicer to deposit into the Certificate
     Account on each Certificate Account Deposit Date the amounts required to be
     deposited therein (other than an Advance) under the terms of this Agreement
     which continues unremedied for two (2) Business Days after such amount was
     required to be remitted; 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 the Master Servicer contained in the Certificates or in this
     Agreement (including any breach of the Master Servicer's representations
     and warranties pursuant to Section 2.03(a) which materially and adversely
     affects the interests of the Certificateholders) which continues unremedied
     for a period of 60 days after the date on which written notice of such
     failure, requiring the same to be remedied, shall have been given to the
     Master Servicer by the Trustee, or to the Master Servicer and the Trustee
     by the Holders of Certificates entitled to at least 25% of the Voting
     Rights; or

          (iii) a decree or order of a court or agency or supervisory authority
     having jurisdiction in an involuntary case under any present or future
     federal or state bankruptcy, insolvency or similar law or the appointment
     of a conservator or receiver or liquidator in any insolvency, readjustment
     of debt, marshaling 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 consecutive days; or

          (iv) the Master Servicer shall consent to the appointment of a
     conservator or receiver or liquidator in any insolvency, readjustment of
     debt, marshaling of assets and liabilities or similar proceedings of or
     relating to the 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 or otherwise voluntarily commence a case or proceeding under any
     applicable bankruptcy, insolvency, reorganization or other similar statute,
     make an assignment for the benefit of its creditors, or voluntarily suspend
     payment of its obligations; or

<PAGE>

                                      -90-


          (vi) the Master Servicer shall fail to deposit in the Certificate
     Account on any Certificate Account Deposit Date an amount equal to any
     required Advance which continues unremedied for the earlier of (a) a period
     of two (2) Business Days or (b) the Business Day immediately preceding the
     Distribution Date.

If an Event of Default described in clauses (i)-(v) of this Section shall occur,
then, and in each and every such case, so long as such Event of Default shall
not have been remedied, the Trustee or the Holders of Certificates entitled to
at least 51% of the Voting Rights, by notice in writing to the Master Servicer
(and to the Trustee if given by such Holders of Certificates), with a copy to
the Rating Agencies, may terminate all of the rights and obligations (but not
the liabilities) of the Master Servicer under this Agreement and in and to the
Trust Fund, other than its rights as a Certificateholder hereunder; provided,
however, that the successor to the Master Servicer appointed pursuant to Section
7.02 shall have accepted the duties of Master Servicer effective upon the
resignation or termination of the Master Servicer. If an Event of Default
described in clause (vi) hereof shall occur, the Trustee shall, by notice to the
Master Servicer, and the Depositor, terminate all of the rights and obligations
of the Master Servicer under this Agreement and in and to the Trust Fund, other
than its rights as a Certificateholder hereunder; provided, however, that if the
Trustee determines (in its sole discretion) that the failure by the Master
Servicer to make any required Advance was due to circumstances beyond its
control, and the required Advance was otherwise made, the Trustee shall not
terminate the Master Servicer. On or after the receipt by the Master Servicer of
such notice, all authority and power of the Master Servicer under this
Agreement, whether with respect to the Certificates (other than as a holder
thereof) or the Mortgage Loans or otherwise, shall pass to and be vested in the
Trustee pursuant to and under this Section, and, without limitation, the Trustee
is hereby authorized and empowered to execute and deliver, on behalf of the
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 at the expense of the Master Servicer. The
Master Servicer agrees to cooperate (and pay any related costs and expenses)
with the Trustee in effecting the termination of the Master Servicer's
responsibilities and rights hereunder, including, without limitation, the
transfer to the Trustee or its appointed agent for administration by it of (i)
the property and amounts which are then or should be part of the Trust Fund or
which thereafter become part of the Trust Fund; (ii) originals or copies of all
documents of the Master Servicer reasonably requested by the Trustee to enable
it to assume the Master Servicer's duties thereunder; (iii) the rights and
obligations of the Master Servicer under the Sub- Servicing Agreements with
respect to the Mortgage Loans; and (iv) all cash amounts which shall at the time
be deposited by the Master Servicer or should have been deposited to the
Custodial or the Certificate Account or thereafter be received with respect to
the Mortgage Loans. The Trustee shall not be deemed to have breached any
obligation hereunder as a result of a failure to make or delay in making any
distribution as and when required hereunder caused by the failure of the Master
Servicer to remit any amounts received on it or to deliver any

<PAGE>

                                      -91-


documents held by it with respect to the Mortgage Loans. For purposes of this
Section 7.01, the Trustee shall not be deemed to have knowledge of an Event of
Default unless a Responsible Officer of the Trustee assigned to and working in
the Trustee's corporate trust division has actual knowledge thereof or unless
notice of any event which is in fact such an Event of Default is received by the
Trustee and such notice references the Certificates, the Trust Fund or this
Agreement.

          SECTION 7.02. Trustee to Act; Appointment of Successor.

          On and after the time the Master Servicer receives a notice of
termination pursuant to Section 7.01 (i)-(v), the Trustee or its appointed agent
shall be the successor in all respects to the Master Servicer in its capacity as
Master Servicer under this Agreement and the transactions set forth or provided
for herein and shall be subject thereafter to all the responsibilities, duties
and liabilities relating thereto placed on the Master Servicer including the
obligation to make Advances which have been or will be required to be made
(except for the responsibilities, duties and liabilities contained in Section
2.03 and its obligations to deposit amounts in respect of losses pursuant to
Section 3.12 and 4.01(g)) by the terms and provisions hereof; and provided
further, that any failure to perform such duties or responsibilities caused by
the Master Servicer's failure to provide information required by Section 4.03
shall not be considered a default by the Trustee hereunder. As compensation
therefor, the Trustee shall be entitled to all funds relating to the Mortgage
Loans which the Master Servicer would have been entitled to charge to the
Custodial Account and the Certificate Account if the Master Servicer had
continued to act hereunder. If the Trustee has become the successor to the
Master Servicer in accordance with Section 6.04 or Section 7.02, then
notwithstanding the above, if the Trustee shall be unwilling to so act, or shall
be unable to so act, the Trustee may appoint, or petition a court of competent
jurisdiction or appoint, any established housing and home finance institution,
which is also a FNMA- or FHLMC-approved mortgage servicing institution, having a
net worth of not less than $10,000,000 as the successor to the Master Servicer
hereunder in the assumption of all or any part of the responsibilities, duties
or liabilities of the Master Servicer hereunder. Pending appointment of a
successor to the Master Servicer hereunder, the Trustee shall act in such
capacity as herein above provided. 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 the Master Servicer hereunder. Each of the Seller, the Trustee and
such successor shall take such action, consistent with this Agreement, as shall
be necessary to effectuate any such succession.

          Any successor, including the Trustee, to the Master Servicer shall
maintain in force during its term as master servicer hereunder policies and
fidelity bonds to the same extent as the Master Servicer is so required pursuant
to Section 3.18.

<PAGE>

                                      -92-


          SECTION 7.03. Notification to Certificateholders.

          (a) Upon any such termination or appointment of a successor to the
Master Servicer, the Trustee shall give prompt notice thereof to
Certificateholders and to the Rating Agencies.

          (b) Within 60 days after the occurrence of any Event of Default, the
Trustee shall transmit by mail to all Holders of Certificates notice of each
such Event of Default hereunder known to the Trustee, unless such Event of
Default shall have been cured or waived.

          SECTION 7.04. Waiver of Events of Default.

          The Holders representing at least 51% of the Voting Rights of
Certificates affected by a default or Event of Default hereunder, may waive such
default or Event of Default (other than an Event of Default set forth in Section
7.01 (vi)); PROVIDED, HOWEVER, that (a) a default or Event of Default under
clause (i) of Section 7.01 may be waived only by all of the Holders of
Certificates affected by such default or Event of Default and (b) no waiver
pursuant to this Section 7.04 shall affect the Holders of Certificates in the
manner set forth in the second paragraph of Section 11.01 or materially
adversely affect any non-consenting Certificateholder. Upon any such waiver of a
default or Event of Default by the Holders representing the requisite percentage
of Voting Rights of Certificates affected by such default or Event of Default,
such default or Event of Default shall cease to exist and shall be deemed to
have been remedied for every purpose hereunder. No such waiver shall extend to
any subsequent or other default or Event of Default or impair any right
consequent thereon except to the extent expressly so waived. The Master Servicer
shall give notice of any such waiver to the Rating Agencies.

          SECTION 7.05. List of Certificateholders.

          Upon written request of three or more Certificateholders of record,
for purposes of communicating with other Certificateholders with respect to
their rights under this Agreement, the Trustee will afford such
Certificateholders access during business hours to the most recent list of
Certificateholders held by the Trustee.


<PAGE>

                                      -93-

                                  ARTICLE VIII

                             CONCERNING THE TRUSTEE

          SECTION 8.01. Duties of Trustee.

          The Trustee, prior to the occurrence of an Event of Default and after
the curing or waiver of all Events of Default which may have occurred,
undertakes to perform such duties and only such duties as are specifically set
forth in this Agreement. If an Event of Default occurs, is continuing and has
not been 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 man would exercise or use under the circumstances in the
conduct of his own affairs. Any permissive right of the Trustee enumerated in
this Agreement shall not be construed as a duty.

          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 in accordance with the
requirements of this Agreement. If any such instrument is found not to conform
to the requirements of this Agreement in a material manner, the Trustee shall
take such action as it deems appropriate to have the instrument corrected, and
if the instrument is not corrected to the Trustee's satisfaction, the Trustee
will provide notice thereof to the Certificateholders. Notwithstanding the
foregoing, the Trustee shall not be responsible for the accuracy or content of
any resolution, certificate, statement, opinion, report, document, order or
other instrument furnished by the Master Servicer hereunder or any Opinion of
Counsel required hereunder.

          The Trustee shall prepare and file or cause to be filed on behalf of
the Trust Fund any tax return that is required with respect to the REMIC
pursuant to applicable federal, state or local tax laws.

          The Trustee covenants and agrees that it shall perform its obligations
hereunder in a manner so as to maintain the status of the Trust Fund under the
REMIC Provisions and to prevent the imposition of any federal, state or local
income, prohibited transaction, contribution or other tax on the Trust Fund to
the extent that maintaining such status and avoiding such taxes are reasonably
within the control of the Trustee and are reasonably within the scope of its
duties under this Agreement.

          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:

<PAGE>

                                      -94-


               (i) Prior to the occurrence of an Event of Default, and after the
          curing or waiver of all such Events of Default which may have
          occurred, the duties and obligations of the Trustee shall be
          determined solely by the express provisions of this Agreement, the
          Trustee shall not be liable except for the performance of such duties
          and obligations as are specifically set forth in this Agreement, no
          implied covenants or obligations shall be read into this Agreement
          against the Trustee and, in the absence of bad faith on the part of
          the Trustee, the Trustee may conclusively rely, as to the truth of the
          statements and the correctness of the opinions expressed therein, upon
          any certificates or opinions furnished to the Trustee and conforming
          to the requirements of this Agreement;

               (ii) The Trustee shall not be liable for an error of judgment
          made in good faith by a Responsible Officer or Responsible Officers of
          the Trustee, unless it shall be proved that the Trustee was negligent
          in ascertaining the pertinent facts; and

               (iii) The Trustee shall not be liable with respect to any action
          taken, suffered or omitted to be taken by it in good faith in
          accordance with the direction of the Holders of Certificates entitled
          to at least 25% of the Voting Rights relating 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.

          SECTION 8.02. Certain Matters Affecting the Trustee.

          Except as otherwise provided in Section 8.01:

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

          (b) The Trustee may consult with counsel and any 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 therewith;

          (c) The Trustee shall be under no obligation to exercise any of the
     trusts or powers vested in it by this Agreement, other than its obligation
     to give notice pursuant to this Agreement, or to institute, conduct or
     defend any litigation hereunder or in relation hereto at the request, order
     or direction of any of the Certificateholders, pursuant to the

<PAGE>

                                      -95-


     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; nothing
     contained herein shall, however, relieve the Trustee of the obligation,
     upon the occurrence of an Event of Default of which a Responsible Office of
     the Trustee's corporate trust department has actual knowledge (which has
     not been waived or cured), to exercise such of the rights and powers vested
     in it by this Agreement, and to use the same degree of care and skill in
     their exercise as a prudent man would exercise or use under the
     circumstances in the conduct of his own affairs;

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

          (e) Prior to the occurrence of an Event of Default hereunder and after
     the curing or waiver of all Events of Default which may have occurred, 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, unless requested in writing to do so by the Holders of
     Certificates entitled to at least 25% of the Voting Rights; 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, reasonably assured to
     the Trustee by the security afforded to it by the terms of this Agreement
     reasonable expense of every such examination shall be paid by the
     Certificateholders requesting the investigation;

          (f) The Trustee may execute any of the trusts or powers hereunder or
     perform any duties hereunder either directly or by or through agents or
     attorneys; and

          (g) The Trustee shall not be required to give any bond or surety with
     respect to the execution of the trust created hereby or the powers granted
     hereunder.

          SECTION 8.03. Trustee Not Liable for Certificates or Mortgage Loans.

          The recitals contained herein and in the Certificates (other than the
signature of the Trustee, the authentication of the Trustee on the Certificates,
the acknowledgments of the Trustee contained in Article II and the
representations and warranties of the Trustee in Section 8.12) shall be taken as
the statements of the Depositor and the Trustee assumes no responsibility for
their correctness. The Trustee makes no representations or warranties as to the
validity or sufficiency of this Agreement (other than as specifically set forth
in Section 8.12), of the Certificates (other than the signature and
authentication of the Trustee on the Certificates), of the Excess Servicing

<PAGE>

                                      -96-


Strip or of any Mortgage Loan or related document. The Trustee shall not be
accountable for the use or application by the Depositor of any of the
Certificates or the Excess Servicing Strip or of the proceeds of such
Certificates or Excess Servicing Strip, or for the use or application of any
funds paid to the Depositor or the Master Servicer in respect of the Mortgage
Loans or deposited in or withdrawn from the Custodial Account by the Master
Servicer.

          SECTION 8.04. Trustee May Own Certificates.

          The Trustee in its individual or any other capacity (other than as
Trustee hereunder) may become the owner or pledgee of Certificates with the same
rights it would have if it were not Trustee and may otherwise deal with the
parties hereto.

          SECTION 8.05. Trustee's Fees.

          On each Distribution Date, the Trustee shall be entitled to withdraw
from the Certificate Account as compensation hereunder the Trustee Fees. Such
compensation (which shall not be limited by any provision of law in regard to
the compensation of a trustee of an express trust) shall be paid for all
services rendered by it (except as otherwise reimbursed by the Seller pursuant
to a separate fee letter between the Seller and the Trustee) in the execution of
the trusts hereby created and in the exercise and performance of any of the
powers and duties hereunder or of the Trustee. Except as otherwise provided in
this Agreement, the Trustee and any director, officer, employee or agent of the
Trustee shall be indemnified and held harmless by the Trust Fund against any
claim, loss, liability, fee or expense incurred in connection with any Event of
Default, any breach of this Agreement or any claim or legal action (including
any pending or threatened claim or legal action) relating to the acceptance or
administration of its trusts hereunder or the Certificates or the Excess
Servicing Strip, other than any claim, loss, liability or expense (i) sustained
in connection with this Agreement related to the willful misfeasance, bad faith
or negligence of the Master Servicer in the performance of its duties hereunder
or (ii) incurred in connection with a breach constituting willful misfeasance,
bad faith or negligence of the Trustee in the performance of its duties
hereunder or by reason of reckless disregard of its obligations and duties
hereunder.

          The Master Servicer shall indemnify the Trustee and any director,
officer, employee or agent of the Trustee against any such claim or legal action
(including any pending or threatened claim or legal action), loss, liability,
fee or expense that may be sustained in connection with this Agreement related
to the willful misfeasance, bad faith, or negligence in the performance of the
Master Servicer's duties hereunder.

          The provisions of this Section 8.05 shall survive the resignation or
removal of the Trustee or the termination of this Agreement.

<PAGE>

                                      -97-


          SECTION 8.06. Eligibility Requirements for Trustee.

          The Trustee hereunder shall at all times be a corporation or a
national banking association organized and doing business under the laws of any
state or the United States of America or the District of Columbia, authorized
under such laws to exercise corporate trust powers, having a combined capital
and surplus of at least $50,000,000 and subject to supervision or examination by
federal or state authority. In addition, the Trustee shall at all times be
acceptable to the Rating Agency rating the Certificates. If such corporation
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
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 the provisions of this Section, the
Trustee shall resign immediately in the manner and with the effect specified in
Section 8.07. The corporation or national banking association serving as Trustee
may have normal banking and trust relationships with the Seller and their
affiliates or the Master Servicer and its affiliates; provided, however, that
such corporation cannot be an affiliate of the Master Servicer other than the
Trustee in its role as successor to the Master Servicer.

          SECTION 8.07. Resignation and Removal of the Trustee.

          The Trustee may at any time resign and be discharged from the trusts
hereby created by giving written notice thereof to the Master Servicer; with a
copy to the Rating Agencies; provided, that such resignation shall not be
effective until a successor trustee is appointed and accepts appointment in
accordance with the following provisions. Upon receiving such notice of
resignation, the Master Servicer shall promptly appoint a successor trustee who
meets the eligibility requirements of Section 8.06 by written instrument, in
triplicate, one copy of which instrument shall be delivered to each of the
resigning Trustee and to the successor trustee. If no successor trustee shall
have been so appointed and 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;
provided, however, that the resigning Trustee shall not resign and be discharged
from the trusts hereby created until such time as the Rating Agency rating the
Certificates approves the successor trustee.

          If at any time the Trustee shall cease to be eligible in accordance
with the provisions of Section 8.06 and shall fail to resign after written
request therefor by the Master Servicer, or if at any time the Trustee shall
become incapable of acting, or shall be adjudged 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, the
Master Servicer may remove the Trustee and appoint a successor trustee who meets
the eligibility requirements of Section 8.06 by written

<PAGE>

                                      -98-


instrument, in triplicate, which instrument shall be delivered to the Trustee so
removed and to the successor trustee.

          The Holders of Certificates entitled to at least 51% of the Voting
Rights, may at any time remove the Trustee and appoint a successor trustee by
written instrument or instruments, in triplicate, signed by such Holders or
their attorneys-in-fact duly authorized, one complete set of which instruments
shall be delivered to the Master Servicer, one complete set to the Trustee so
removed and one complete set to the successor so appointed. A copy of such
instrument shall be delivered to the Certificateholders and the Depositor by the
Master Servicer.

          Any resignation or removal of the Trustee and appointment of a
successor trustee pursuant to any of the provisions of this Section shall not
become effective until acceptance of appointment by the successor trustee as
provided in Section 8.08.

          SECTION 8.08. Successor Trustee.

          Any successor trustee appointed as provided in Section 8.07 shall
execute, acknowledge and deliver to 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 the like effect as if originally named as trustee
herein. The predecessor trustee shall after payment of its outstanding fees and
expenses, promptly deliver to the successor trustee all assets and records of
the Trust Fund held by it hereunder, and the Master Servicer and the predecessor
trustee shall execute and deliver all such instruments and do such other things
as may reasonably be required for more fully and certainly vesting and
confirming in the successor trustee all such rights, powers, duties and
obligations.

          No successor trustee shall accept appointment as provided in this
Section unless at the time of such acceptance such successor trustee shall be
eligible under the provisions of Section 8.06.

          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. If the Master Servicer fails to mail such notice
within ten days after acceptance of appointment by the successor trustee, the
successor trustee shall cause such notice to be mailed at the expense of the
Master Servicer.

          SECTION 8.09. Merger or Consolidation of Trustee.

<PAGE>

                                      -99-


          Any state bank or trust company or national banking association into
which the Trustee may be merged or converted or with which it may be
consolidated or any state bank or trust company or national banking association
resulting from any merger, conversion or consolidation to which the Trustee
shall be a party, or any state bank or trust company or national banking
association succeeding to all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder,
provided such state bank or trust company or national banking association shall
be eligible under the provisions of Section 8.06 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.

          SECTION 8.10. Appointment of Co-Trustee or Separate Trustee.

          Notwithstanding any other provisions hereof, at any time, for the
purpose of meeting any legal requirements of any jurisdiction in which any part
of the Trust Fund or property securing the same may at the time be located, the
Master Servicer and the Trustee acting jointly shall have the power and shall
execute and deliver all instruments to appoint one or more Persons approved by
the Trustee to act as co-trustee or co-trustees, jointly with the Trustee, or
separate trustee or separate trustees, of all or any part of the Trust Fund, and
to vest in such Person or Persons, in such capacity, such title to the Trust
Fund, or any part thereof, and, subject to the other provisions of this Section
8.10, such powers, duties, obligations, rights and trusts as the Master Servicer
and the Trustee may consider necessary or desirable. If the Master Servicer
shall not have joined in such appointment within 15 days after the receipt by it
of a request so to do, or in case an Event of Default shall have occurred and be
continuing, the Trustee alone shall have the power to make such appointment
without the Master Servicer. No co-trustee or separate trustee hereunder shall
be required to meet the terms of eligibility as a successor trustee under
Section 8.06 hereunder and no notice to Holders of Certificates of the
appointment of co-trustee(s) or separate trustee(s) shall be required under
Section 8.08 hereof.

          In the case of any appointment of a co-trustee or separate trustee
pursuant to this Section 8.10 all rights, powers, duties and obligations
conferred or imposed upon the Trustee and required to be conferred or such
co-trustee shall be conferred or imposed upon and exercised or performed by the
Trustee and such separate trustee or co-trustee jointly, except to the extent
that under any law of any jurisdiction in which any particular act or acts are
to be performed (whether as Trustee hereunder or as successor to the Master
Servicer hereunder), 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 or
co-trustee at the direction of the Trustee.

          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

<PAGE>

                                     -100-


of them. Every instrument appointing any separate trustee or co-trustee shall
refer to this Agreement and the conditions of this Article VIII. 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.

          Any separate trustee or co-trustee 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. If any separate trustee or co-trustee
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.


<PAGE>

                                     -101-

                                   ARTICLE IX

                                   TERMINATION


          SECTION 9.01. Termination Upon Repurchase or Liquidation of All
                        Mortgage Loans or upon Purchase of Certificates.

     (a) Subject to Section 9.02, the respective obligations and
responsibilities of the Depositor, the Master Servicer and the Trustee created
hereby (other than the obligations of the Master Servicer to the Trustee
pursuant to Section 8.05 and of the Master Servicer to provide for and the
Trustee to make payments to Certificateholders as hereafter set forth) shall
terminate upon payment to the Certificateholders of all amounts held by or on
behalf of the Trustee and required to be paid to them hereunder following the
earlier to occur of (i) the repurchase by the Master Servicer or its designee of
all Mortgage Loans and each REO Property in respect thereof remaining in the
Trust Fund at a price equal to (a) 100% of the unpaid principal balance of each
Mortgage Loan (other than one as to which a REO Property was acquired) on the
day of repurchase together with accrued interest on such unpaid principal
balance at the Net Mortgage Rate to the first day of the month in which the
proceeds of such repurchase are to be distributed, plus (b) the appraised value
of any REO Property (but not more than the unpaid principal balance of the
related Mortgage Loan, together with accrued interest on that balance at the Net
Mortgage Rate to the first day of the month such repurchase price is
distributed), less the good faith estimate of the Master Servicer of liquidation
expenses to be incurred in connection with its disposal thereof, such appraisal
to be conducted by an appraiser mutually agreed upon by the Master Servicer and
the Trustee at the expense of the Master Servicer, and (ii) the final payment or
other liquidation (or any Advance with respect thereto) of the last Mortgage
Loan remaining in the Trust Fund (or the disposition of all REO Property in
respect thereof); provided, however, that in no event shall the trust created
hereby continue beyond 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, living on the date hereof, and provided
further that the purchase price set forth above shall be increased as is
necessary, as determined by the Master Servicer, to avoid disqualification of
the Trust Fund as a REMIC. In the case of any repurchase by the Master Servicer
pursuant to clause (i), the Master Servicer shall include in such repurchase
price the amount of any Advances that will be reimbursed to the Master Servicer
pursuant to Section 3.11(iii) and the Master Servicer shall exercise reasonable
efforts to cooperate fully with the Trustee in effecting such repurchase and the
transfer of the Mortgage Loans and related Mortgage Files and related records to
the Master Servicer.

          The right of the Master Servicer or its designee to repurchase all
Mortgage Loans pursuant to (i) above shall be conditioned upon the aggregate
Stated Principal Balance of such Mortgage Loans at the time of any such
repurchase aggregating an amount equal to or less than 10% of the aggregate
Stated Principal Balance of the Mortgage Loans at the Cut-off Date. If such

<PAGE>

                                     -102-


right is exercised, the Master Servicer upon such repurchase shall provide to
the Trustee, notice of such exercise prior to the Determination Date in the
month preceding the month of purchase and the certification required by Section
3.16.

          Notice of any termination, specifying the Distribution Date upon which
the Certificateholders may surrender their Certificates to the Trustee for
payment of the final distribution and cancellation, shall be given promptly by
the Trustee by letter to the Certificateholders mailed (a) in the event such
notice is given in connection with the Master Servicer's election to repurchase,
not earlier than the 15th day and not later than the 25th day of the month next
preceding the month of such final distribution or (b) otherwise during the month
of such final distribution on or before the Determination Date in such month, in
each case specifying (i) the Distribution Date upon which final payment of the
Certificates will be made upon presentation and surrender of Certificates at the
office of the Trustee therein designated, (ii) the amount of any such final
payment and (iii) that the Record Date otherwise applicable to such Distribution
Date is not applicable, payments being made only upon presentation and surrender
of the Certificates at the office of the Trustee therein specified. In the event
such notice is given in connection with the Master Servicer or its designee's
election to repurchase, the Master Servicer or its designee shall deliver to the
Trustee for deposit in the Certificate Account on the Business Day immediately
preceding the Distribution Date specified in such notice an amount equal to the
above-described repurchase price payable out of its own funds. Upon presentation
and surrender of the Certificates by the Certificateholders, the Trustee shall
distribute to the Certificateholders (i) the amount otherwise distributable on
such Distribution Date, if not in connection with the Master Servicer's election
to repurchase, or (ii) if the Master Servicer elected to so repurchase, an
amount determined as follows: with respect to each Class A Certificate and
Subordinate Certificate and the Excess Servicing Strip, the outstanding
Certificate Principal Balance thereof, plus one month's interest thereon at the
applicable Pass-Through Rate and any previously unpaid Accrued Certificate
Interest; and with respect to the Residual Certificates, the Percentage Interest
evidenced thereby multiplied by the difference, if any, between the above
described repurchase price and the aggregate amount to be distributed to the
Holders of the Class A Certificates and Subordinate Certificates and the Excess
Servicing Strip, subject to the priorities set forth in Section 4.01(c). Upon
certification to the Trustee by a Servicing Officer, following such final
deposit, the Trustee shall promptly release the Mortgage Files as directed by
the Master Servicer for the remaining Mortgage Loans, and the Trustee shall
execute all assignments, endorsements and other instruments required by the
Master Servicer as being necessary to effectuate such transfer.

          In the event that all of the Certificateholders shall not surrender
their Certificates for cancellation within six months after the time specified
in the above-mentioned notice, the Trustee shall give a second notice to the
remaining Certificateholders to surrender their Certificates for cancellation
and receive the final distribution with respect thereto. If within six months
after the second notice all of the Certificates shall not have been surrendered
for cancellation, the Trustee shall take reasonable steps as directed by the
Depositor, or appoint an

<PAGE>

                                     -103-


agent to take reasonable steps, to contact the remaining Certificateholders
concerning surrender of their Certificates, and the cost thereof shall be paid
out of the funds and other assets which remain subject hereto. If within nine
months after the second notice all the Certificates shall not have been
surrendered for cancellation, the Residual Certificateholders shall be entitled
to all unclaimed funds and other assets which remain subject hereto.

     (b) On any Distribution Date on which the Stated Principal Balance of the
Mortgage Loans is less than ten percent of the Cut-off Date Stated Principal
Balance of the Mortgage Loans, either the Master Servicer or the Depositor,
whichever gives notice first, shall have the right, at its option, to purchase
the Certificates in whole, but not in part, at a price equal to the outstanding
Certificate Principal Balance of such Certificates plus the sum of one month's
Accrued Certificate Interest thereon and any previously unpaid Accrued
Certificate Interest.

          The Master Servicer or the Depositor, as applicable, shall give the
Trustee not less than 60 days' prior notice of the Distribution Date on which
the Master Servicer or the Depositor, as applicable, anticipates that it will
purchase the Certificates pursuant to Section 9.01(b). Notice of any such
purchase, specifying the Distribution Date upon which the Holders may surrender
their Certificates to the Trustee for payment in accordance with this Section
9.01(b), shall be given promptly by the Master Servicer or the Company, as
applicable, by letter to Certificateholders (with a copy to the Trustee and each
Rating Agency) mailed not earlier than the 15th day and not later than the 25th
day of the month next preceding the month of such final distribution,
specifying:

          (i) the Distribution Date upon which purchase of the Certificates is
     anticipated to be made upon presentation and surrender of such Certificates
     at the office or agency of the Trustee therein designated,

          (ii) the purchase price therefor, if known, and

          (iii) that the Record Date otherwise applicable to such Distribution
     Date is not applicable, payments being made only upon presentation and
     surrender of the Certificates at the office or agency of the Trustee
     therein specified.

If either the Master Servicer or the Depositor gives the notice specified above,
the Master Servicer or the Depositor, as applicable, shall deposit in the
Certificate Account before the Distribution Date on which the purchase pursuant
to Section 9.01(b) is to be made, in immediately available funds, an amount
equal to the purchase price for the Certificates computed as provided above.

         Upon presentation and surrender of the Certificates to be purchased
pursuant to Section 9.01(b) by the Holders thereof, the Trustee shall distribute
to such Holders an amount equal to the

<PAGE>

                                     -104-


outstanding Certificate Principal Balance thereof plus the sum of one month's
Accrued Certificate Interest thereon and any previously unpaid Accrued
Certificate Interest with respect thereto.

          In the event that any Certificateholders do not surrender their
Certificates on or before the Distribution Date on which a purchase pursuant to
this Section 9.01(b) is to be made, the Trustee shall on such date cause all
funds in the Certificate Account deposited therein by the Master Servicer or the
Depositor, as applicable, pursuant to this Section 9.01(b) to be withdrawn
therefrom and deposited in a separate escrow account for the benefit of such
Certificateholders, and the Master Servicer or the Depositor, as applicable,
shall give a second written notice to such Certificateholders to surrender their
Certificates for payment of the purchase price therefor. If within six months
after the second notice any Certificate shall not have been surrendered for
cancellation, the Trustee shall take appropriate steps as directed by the Master
Servicer or the Depositor, as applicable, to contact the Holders of such
Certificates concerning surrender of their Certificates. The costs and expenses
of maintaining the escrow account and of contacting Certificateholders shall be
paid out of the assets which remain in the escrow account. No interest shall
accrue or be payable to any Certificateholder on any amount held in the escrow
account or by the Master Servicer or the Depositor, as applicable, as a result
of such Certificateholder's failure to surrender its Certificate(s) for payment
in accordance with this Section 9.01. Any Certificate that is not surrendered on
the Distribution Date on which a purchase pursuant to this Section 9.01 occurs
as provided above will be deemed to have been purchased and the Holder as of
such date will have no rights with respect thereto except to receive the
purchase price therefor minus any costs and expenses associated with such escrow
account and notices allocated thereto. Any Certificates so purchased or deemed
to have been purchased on such Distribution Date shall remain outstanding
hereunder. The Master Servicer or the Depositor, as applicable, shall be for all
purposes the Holder thereof as of such date.

     Upon the termination of the Trust Fund pursuant to this Section 9.01, all
rights with respect to the Excess Servicing Strip shall automatically terminate
without further action of the Trustee upon payment of any unpaid Accrued
Certificate Interest thereon.

          SECTION 9.02. Additional Termination Requirements.

          (a) In the event the Master Servicer repurchases the Mortgage Loans as
provided in Section 9.01, the Trust Fund shall be terminated in accordance with
the following additional requirements, unless the Master Servicer, at its own
expense, obtains for the Trustee an Opinion of Counsel to the effect that the
failure of the Trust Fund to comply with the requirements of this Section 9.02
will not (i) result in the imposition on the Trust of taxes on "prohibited
transactions," as described in Section 860F of the Code, or (ii) cause the Trust
Fund to fail to qualify as a REMIC at any time that any Certificate or the
Excess Servicing Strip is outstanding:

<PAGE>

                                     -105-


          (i) The Master Servicer shall establish a 90-day liquidation period
     for the REMIC and specify the first day of such period in a statement
     attached to the Trust Fund's final Tax Return pursuant to Treasury
     regulations Section 1.860F-1. The Master Servicer also shall satisfy all of
     the requirements of a qualified liquidation for the REMIC under Section
     860F of the Code and regulations thereunder;

          (ii) The Master Servicer shall notify the Trustee at the commencement
     of such 90-day liquidation period and, at or prior to the time of making of
     the final payment on the Certificates and the Excess Servicing Strip, the
     Trustee shall sell or otherwise dispose of all of the remaining assets of
     the Trust Fund in accordance with the terms hereof; and

          (iii) If the Master Servicer or the Depositor is exercising its right
     to purchase the assets of the Trust Fund, the Master Servicer shall, during
     the 90-day liquidation period and at or prior to the Final Distribution
     Date, purchase all of the assets of the Trust Fund for cash; PROVIDED,
     HOWEVER, that in the event that a calendar quarter ends after the
     commencement of the 90-day liquidation period but prior to the Final
     Distribution Date, the Master Servicer or the Depositor shall not purchase
     any of the assets of the Trust Fund prior to the close of that calendar
     quarter.

     (b) Each Holder of a Certificate, the holder of the Excess Servicing Strip
and the Trustee hereby irrevocably approves and appoints the Master Servicer as
its attorney-in-fact to adopt a plan of complete liquidation for the REMIC at
the expense of the Trust Fund in accordance with the terms and conditions of
this Agreement.


<PAGE>

                                     -106-


                                    ARTICLE X

                                REMIC PROVISIONS

          SECTION 10.01. REMIC Administration.

     (a) The Trustee shall make an election to treat the Trust Fund as a REMIC
under the Code and, if necessary, under applicable state law. Each such election
will be made on Form 1066 or other appropriate federal tax or information return
(including Form 8811) or any appropriate state return for the taxable year
ending on the last day of the calendar year in which the Certificates and the
Excess Servicing Strip are issued. For the purposes of the REMIC election in
respect of the Trust Fund, the Certificates (other than the Class R
Certificates) and the Excess Servicing Strip shall be designated as the "regular
interests" and the Class R Certificates shall be designated as the sole class of
"residual interest" in the REMIC. The Master Servicer and the Trustee shall not
permit the creation of any "interests" (within the meaning of Section 860G of
the Code) in the REMIC other than the Certificates and the Excess Servicing
Strip.

     (b) The Closing Date is hereby designated as the "startup day" of the Trust
Fund within the meaning of Section 860G(a)(9) of the Code.

     (c) The Trustee shall pay out of its own funds, without any right of
reimbursement, any and all expenses relating to any tax audit of the REMIC
(including, but not limited to, any professional fees or any administrative or
judicial proceedings with respect to the REMIC that involve the Internal Revenue
Service or state tax authorities), other than the expense of obtaining any tax
related Opinion of Counsel except as specified herein. The Trustee, as agent for
the REMIC's tax matters person, shall (i) act on behalf of the REMIC in relation
to any tax matter or controversy involving the Trust Fund and (ii) represent the
Trust Fund in any administrative or judicial proceeding relating to an
examination or audit by any governmental taxing authority with respect thereto.
By their acceptance thereof, the holder of the largest Percentage Interest of
the Residual Certificates hereby agrees to irrevocably appoint the Trustee or an
Affiliate as its agent to perform all of the duties of the tax matters person
for the REMIC.

          (d) The Trustee shall prepare, sign and file all of the Tax Returns in
respect of the REMIC created hereunder. The expenses of preparing and filing
such returns shall be borne by the Trustee without any right of reimbursement
therefor. The Master Servicer shall provide on a timely basis to the Trustee or
its designee such information with respect to the assets of the REMIC as is in
its possession and reasonably required by the Trustee to enable it to perform
its obligations under this Article X.

<PAGE>

                                     -107-


          (e) The Trustee shall perform on behalf of the REMIC all reporting and
other tax compliance duties that are the responsibility of the 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,
as required by the Code, the REMIC Provisions or other such compliance guidance,
the Trustee shall provide (i) to any Transferor of a Residual Certificate such
information as is necessary for the application of any tax relating to the
transfer of a Residual Certificate to any Person who is not a Permitted
Transferee, (ii) to the Certificateholders such information or reports as are
required by the Code or the REMIC Provisions including reports relating to
interest, original issue discount and market discount or premium (using the
Prepayment Assumption as required) and (iii) to the Internal Revenue Service the
name, title, address and telephone number of the person who will serve as the
representative of the REMIC. The Master Servicer shall provide on a timely basis
to the Trustee such information with respect to the assets of the REMIC,
including, without limitation, the Mortgage Loans, as is in its possession and
reasonably required by the Trustee to enable it to perform its obligations under
this subsection. In addition, the Depositor shall provide or cause to be
provided to the Trustee, within ten (10) days after the Closing Date, all
information or data that the Trustee reasonably determines to be relevant for
tax purposes as to the valuations and issue prices of the Certificates,
including, without limitation, the price, yield, prepayment assumption and
projected cash flow of the Certificates.

          (f) The Trustee shall take such action and shall cause the REMIC
created hereunder to take such action as shall be necessary to create or
maintain the status thereof as a REMIC under the REMIC Provisions (and the
Master Servicer shall assist it, to the extent reasonably requested by it). The
Trustee shall not take any action, cause the Trust Fund 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 the Trust Fund as a REMIC or (ii) result in the imposition of a tax
upon the REMIC (including but not limited to the tax on prohibited transactions
as defined in Section 860F(a)(2) of the Code and the tax on contributions to a
REMIC set forth in Section 860G(d) of the Code) (either such event, an "Adverse
REMIC Event") unless the Trustee has received an Opinion of Counsel, addressed
to the Trustee (at the expense of the party seeking to take such action but in
no event at the expense of the Trustee) to the effect that the contemplated
action will not, with respect to the REMIC created hereunder, endanger such
status or result in the imposition of such a tax, nor shall the Master Servicer
take or fail to take any action (whether or not authorized hereunder) as to
which the Trustee has advised it in writing that it has received an Opinion of
Counsel to the effect that an Adverse REMIC Event could occur with respect to
such action. In addition, prior to taking any action with respect to the REMIC
or the assets of the REMIC, or causing the REMIC to take any action, which is
not contemplated under the terms of this Agreement, the Master Servicer will
consult with the Trustee or its designee, in writing, with respect to whether
such action could cause an Adverse REMIC Event to occur with respect to the
Trust Fund, and the Master Servicer 

<PAGE>

                                     -108-


shall not take any such action or cause the Trust Fund to take any such action
as to which the Trustee has advised it in writing that an Adverse REMIC Event
could occur. The Trustee may consult with counsel to make such written advice,
and the cost of same shall be borne by the party seeking to take the action not
permitted by this Agreement, but in no event shall such cost be an expense of
the Trustee. At all times as may be required by the Code, the Trustee will
ensure that substantially all of the assets of the REMIC created hereunder will
consist of "qualified mortgages" as defined in Section 860G(a)(3) of the Code
and "permitted investments" as defined in Section 860G(a)(5) of the Code.

          (g) In the event that any tax is imposed on "prohibited transactions"
of the REMIC created hereunder as defined in Section 860F(a)(2) of the Code, on
the "net income from foreclosure property" of the REMIC as defined in Section
860G(c) of the Code, on any contributions to the REMIC after the Startup Day
therefor pursuant to Section 860G(d) of the Code, or any other tax is imposed by
the Code or any applicable provisions of state or local tax laws, such tax shall
be charged (i) to the Trustee pursuant to Section 10.03 hereof, if such tax
arises out of or results from a breach by the Trustee of any of its obligations
under this Article X, (ii) to the Master Servicer pursuant to Section 10.03
hereof, if such tax arises out of or results from a breach by the Master
Servicer of any of its obligations under Article III or this Article X, or
otherwise, (iii) to the Master Servicer as provided in Section 3.05 and (iv)
against amounts on deposit in the Certificate Account and shall be paid by
withdrawal therefrom to the extent not required to be paid by the Master
Servicer or the Trustee pursuant to another provision of this Agreement.

          (h) On or before April 15 of each calendar year, commencing April 15,
1999, the Trustee shall deliver to the Master Servicer and the Rating Agency a
Certificate from a Responsible Officer of the Trustee stating the Trustee's
compliance with this Article X.

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

          (j) Following the Startup Day, the Trustee shall not accept any
contributions of assets to the REMIC other than in connection with any Qualified
Substitute Mortgage Loan delivered in accordance with Section 2.04 unless it
shall have received an Opinion of Counsel to the effect that the inclusion of
such assets in the REMIC will not cause the Trust Fund to fail to qualify as a
REMIC at any time that any Certificates and the Excess Servicing Strip are
outstanding or subject either REMIC to any tax under the REMIC Provisions or
other applicable provisions of federal, state and local law or ordinances.

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

<PAGE>

                                     -109-


to receive any income from assets other than "qualified mortgages" as defined in
Section 860G(a)(3) of the Code or "permitted investments" as defined in Section
860G(a)(5) of the Code.

          SECTION 10.02. Prohibited Transactions and Activities.

          None of the Depositor, the Master Servicer or the Trustee shall sell,
dispose of or substitute for any of the Mortgage Loans (except in connection
with (i) the foreclosure of a Mortgage Loan, including but not limited to, the
acquisition or sale of a Mortgaged Property acquired by deed in lieu of
foreclosure, (ii) the bankruptcy of the Trust Fund, (iii) the termination of the
REMIC pursuant to Article IX of this Agreement, (iv) a substitution pursuant to
Article II of this Agreement or (v) a purchase of Mortgage Loans pursuant to
Article II or III of this Agreement), nor acquire any assets for the Trust Fund
(other than REO Property acquired in respect of a defaulted Mortgage Loan), nor
sell or dispose of any investments in the Custodial Account or the Certificate
Account for gain, nor accept any contributions to the REMIC after the Closing
Date (other than a Qualified Substitute Mortgage Loan delivered in accordance
with Section 2.03), unless it has received an Opinion of Counsel, addressed to
the Trustee (at the expense of the party seeking to cause such sale,
disposition, substitution, acquisition or contribution but in no event at the
expense of the Trustee) that such sale, disposition, substitution, acquisition
or contribution will not (a) affect adversely the status of the Trust Fund as a
REMIC or (b) cause the Trust Fund to be subject to a tax on "prohibited
transactions" or "contributions" pursuant to the REMIC Provisions.

          SECTION 10.03. Master Servicer and Trustee Indemnification.

          (a) The Trustee agrees to indemnify the Trust Fund, the Depositor, and
the Master Servicer for any taxes and costs including, without limitation, any
reasonable attorneys fees imposed on or incurred by the Trust Fund, the
Depositor or the Master Servicer, as a result of a breach of the Trustee's
covenants set forth in this Article X.

          (b) The Master Servicer agrees to indemnify the Trust Fund, the
Depositor and the Trustee for any taxes and costs including, without limitation,
any reasonable attorneys' fees imposed on or incurred by the Trust Fund, the
Depositor or the Trustee, as a result of a breach of the Master Servicer's
covenants set forth in Article III or this Article X, in each case with respect
to compliance with the REMIC Provisions.


<PAGE>

                                     -110-

                                   ARTICLE XI

                            MISCELLANEOUS PROVISIONS

          SECTION 11.01. Amendment.

          This Agreement may be amended from time to time by the Depositor, the
Master Servicer and the Trustee, without the consent of any of the
Certificateholders, (i) to cure any ambiguity, (ii) to correct or supplement any
provisions herein which may be defective or inconsistent with any other
provisions herein or to correct any error, (iii) to amend this Agreement in any
respect subject to the provisions in clauses (A) and (B) below, or (iv) if such
amendment, as evidenced by an Opinion of Counsel (provided by the Person
requesting such amendment) delivered to the Trustee, is reasonably necessary to
comply with any requirements imposed by the Code or any successor or amendatory
statute or any temporary or final regulation, revenue ruling, revenue procedure
or other written official announcement or interpretation relating to federal
income tax laws or any proposed such action which, if made effective, would
apply retroactively to the Trust Fund at least from the effective date of such
amendment; provided that such action (except any amendment described in (iv)
above) shall not adversely affect in any material respect the interests of any
Certificateholder (other than Certificateholders who shall consent to such
amendment), as evidenced by (A) an Opinion of Counsel (provided by the Person
requesting such amendment) delivered to the Trustee, and (B) a letter from each
Rating Agency, confirming that such amendment shall not cause it to lower its
rating on any of the Certificates.

          This Agreement may also be amended from time to time by the Depositor,
the Master Servicer and the Trustee and Holders of Certificates entitled to at
least 66-2/3% of the Voting Rights 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 of Certificates or the
Excess Servicing Strip; provided, however, that no such amendment shall (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 or the
Excess Servicing Strip without the consent of the Holder of such Certificate or
the holder of the Excess Servicing Strip, (ii) adversely affect in any material
respect the interests of the Holders of any Class of Certificates in a manner
other than as described in (i), without the consent of the Holders of
Certificates of such Class evidencing at least 66-2/3% of the Voting Rights of
such Class, or (iii) reduce the aforesaid percentage of Certificates the Holders
of which are required to consent to any such amendment, without the consent of
the Holders of all Certificates then outstanding. Notwithstanding any other
provision of this Agreement, for purposes of the giving or withholding of
consents pursuant to this Section 11.01, Certificates registered in the name of
the Seller or the Master Servicer or any affiliate thereof shall be entitled to
Voting Rights with respect to matters described in (i), (ii) and (iii) of this
paragraph.

<PAGE>

                                     -111-


          Notwithstanding any contrary provision of this Agreement, the Trustee
shall not consent to any amendment to this Agreement unless it shall have first
received an Opinion of Counsel (provided by the Person requesting such
amendment) to the effect that such amendment will not result in the imposition
of any tax on the Trust Fund pursuant to the REMIC Provisions or cause the Trust
Fund to fail to qualify as a REMIC at any time that any Certificates or the
Excess Servicing Strip are outstanding.

          Promptly after the execution of any such amendment the Trustee shall
furnish a copy of such amendment or a written statement describing the amendment
to each Certificateholder, with a copy to the Rating Agencies.

          It shall not be necessary for the consent of Certificateholders under
this Section 11.01 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 Certificateholders shall be subject to such reasonable
regulations as the Trustee may prescribe.

          Prior to executing any amendment pursuant to this Section, the Trustee
shall be entitled to receive an Opinion of Counsel (provided by the Person
requesting such amendment) to the effect that such amendment is authorized or
permitted by this Agreement. The cost of an Opinion of Counsel delivered
pursuant to this Section 11.01 shall be an expense of the party requesting such
amendment, but in any case shall not be an expense of the Trustee.

          The Trustee may, but shall not be obligated to enter into any
amendment pursuant to this Section that affects its rights, duties and
immunities under this Agreement or otherwise.

          SECTION 11.02. Recordation of Agreement; Counterparts.

          To the extent permitted by applicable law, this Agreement is subject
to recordation in all appropriate public offices for real property records in
all the counties or other comparable jurisdictions in which any or all of the
properties subject to the Mortgages are situated, and in any other appropriate
public recording office or elsewhere, such recordation to be effected by the
Master Servicer at the expense of the Certificateholders, but only upon
direction of the Trustee accompanied by an Opinion of Counsel to the effect that
such recordation materially and beneficially affects the interests of the
Certificateholders.

          For the purpose of facilitating the recordation of this Agreement as
herein provided and for other purposes, this Agreement may be executed
simultaneously in any number of counterparts, each of which counterparts shall
be deemed to be an original, and such counterparts shall constitute but one and
the same instrument.

<PAGE>

                                     -112-


          SECTION 11.03. Limitation on Rights of Certificateholders.

          The death or incapacity of any Certificateholder shall not operate to
terminate this Agreement or the Trust Fund, nor entitle such Certificateholder's
legal representatives or heirs to claim an accounting or to take any action or
proceeding in any court for a partition or winding up of the Trust Fund, nor
otherwise affect the rights, obligations and liabilities of the parties hereto
or any of them.

          No Certificateholder shall have any right to vote (except as expressly
provided for herein) or in any manner otherwise control 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 party by reason of any action taken by the parties to
this Agreement pursuant to any provision hereof.

          No Certificateholder shall have any right by virtue 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 notice of an Event of Default, or
of a default by the Seller or the Trustee in the performance of any obligation
hereunder, and of the continuance thereof, as hereinbefore provided, and unless
also the Holders of Certificates entitled to at least 51% of the Voting Rights
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 costs, expenses
and liabilities to be incurred therein or thereby, and the Trustee, for 60 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. It is
understood and intended, and expressly covenanted by each Certificateholder with
every other Certificateholder and the Trustee, that no one or more Holders of
Certificates or the holder of the Excess Servicing Strip shall have any right in
any manner whatever by virtue of any provision of this Agreement to affect,
disturb or prejudice the rights of the Holders of any other of such Certificates
or the holder of the Excess Servicing Strip, 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 equal,
ratable and common 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.

<PAGE>

                                     -113-


          SECTION 11.04. Governing Law.

          This Agreement, the Certificates and the Excess Servicing Strip 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.

          SECTION 11.05. Notices.

          All demands, notices and direction hereunder shall be in writing and
shall be deemed effective upon receipt when delivered to (a) in the case of the
Depositor, Impac Funding, 20371 Irvine Avenue, Santa Ana Heights, California
92707, Attention: Richard Johnson, or such other address as may hereafter be
furnished to the other parties hereto in writing; (b) in the case of the Master
Servicer, PNC Mortgage Securities Corp., 75 North Fairway Drive, Vernon Hills,
Illinois 60061, Attn: General Counsel (with a copy directed to the attention of
the Master Servicing Department); (c) in the case of the Seller, 20371 Irvine
Avenue, Santa Ana Heights, California 92707, Attention: Richard Johnson or such
other address as may hereafter be furnished to the other parties hereto in
writing; (d) in the case of the Trustee, at its Corporate Trust Office, or such
other address as may hereafter be furnished to the other parties hereto in
writing; or (e) in the case of the Rating Agencies, Standard & Poor's, 25
Broadway, New York, New York 10004 Attention: Residential Mortgage Surveillance
Group and DCR, Duff & Phelps Credit Rating Co., 55 East Monroe Street, 38th
Floor, Chicago, Illinois 60603, Attention of Mortgage Backed Securities
Department, IMPAC 1998-3. Any notice required or permitted to be mailed to a
Certificateholder 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 Certificateholder receives
such notice.

          SECTION 11.06. 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, of the Certificates. the rights of the Holders thereof the Excess
Servicing Strip, or the rights of the holder thereof.

          SECTION 11.07. Successors and Assigns; Third Party Beneficiary.

<PAGE>

                                     -114-


          The provisions of this Agreement shall be binding upon and inure to
the benefit of the respective successors and assigns of the parties hereto, and
all such provisions shall inure to the benefit of the Trustee and the
Certificateholders.

          SECTION 11.08. Article and Section Headings.

          The article and section headings herein are for convenience of
reference only, and shall not limit or otherwise affect the meaning hereof.

          SECTION 11.09. Notice to Rating Agencies.

          The Trustee shall use its best efforts to promptly provide notice to
each Rating Agency referred to below with respect to each of the following of
which it has actual knowledge:

          1. Any material change or amendment to this Agreement;

          2. The occurrence of any Event of Default that has not been cured;

          3. The resignation or termination of the Master Servicer or the
Trustee;

          4. The repurchase or substitution of Mortgage Loans pursuant to
Section 2.03;

          5. The final payment to Certificateholders; and

          6. Any change in the location of the Custodial Account or the
Certificate Account.

          In addition, the Trustee and the Master Servicer shall promptly
furnish to the Rating Agency copies of the following:

          1. Each report to Certificateholders described in Section 4.02; and

          2. Each annual independent public accountants' servicing report
received as described in Section 3.20.

          Any such notice pursuant to this Section 11.09 shall be in writing and
shall be deemed to have been duly given if personally delivered or mailed by
first class mail, postage prepaid, or by express delivery service to (i) in the
case of DCR, Duff & Phelps Credit Rating Co., 55 East Monroe Street, 38th Floor,
Chicago, Illinois 60603, Attention of Asset Backed Surveillance Department, (ii)
in the case of Standard & Poor's, 26 Broadway, 15th Floor, New

<PAGE>

                                     -115-


York, New York 10004 or, in each case, such other address as either such Rating
Agency may designate in writing to the parties thereto.




<PAGE>


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

                                            IMPAC SECURED ASSETS CORP.,
                                                 Depositor


                                            By:/s/ Richard Johnson
                                               ----------------------
                                                   Richard Johnson


                                            PNC MORTGAGE SECURITIES CORP.,
                                                 Master Servicer


                                            By:/s/ Daniel P. Hoffman
                                               ----------------------
                                                   Daniel P. Hoffman


                                            BANKERS TRUST COMPANY OF CALIFORNIA,
                                            N.A.,
                                                   Trustee


                                            By:/s/ Michelle Roos
                                               ----------------------
                                                   Michelle Roos


<PAGE>



STATE OF NEW YORK     )
                      ) ss.:
COUNTY OF NEW YORK    )


          On the 29th day of September, 1998 before me, a notary public in and
for said State, personally appeared Richard Johnson, known to me to be
the Chief Financial Officer of Impac Secured Assets Corp., the corporation that
executed the within instrument, and also known to me to be the person who
executed it on behalf of said corporation, and acknowledged to me that such
corporation executed the within instrument.

          IN WITNESS WHEREOF, I have hereunto set my hand and affixed my
official seal the day and year in this certificate first above written.


                                               /s/ Megan Walsh
                                               ----------------------
                                                   Megan Walsh
                                                   Notary Public



[Notarial Seal]




<PAGE>


STATE OF              )
                      )  ss.:
COUNTY OF             )


          On the 29th day of September, 1998 before me, a notary public in and
for said State, personally appeared Daniel P. Hoffman, known to me to be the
Vice President of PNC Mortgage Securities Corp., and also known to me to be the
person who executed the within instrument as a duly authorized officer of said
corporation on behalf of said corporation, and acknowledged to me that such
corporation executed the within instrument.

          IN WITNESS WHEREOF, I have hereunto set my hand and affixed my
official seal the day and year in this certificate first above written.


                                               /s/ Laura A. Kelsey
                                               ----------------------
                                                   Laura A. Kelsey
                                                   Notary Public


[Notarial Seal]


<PAGE>




STATE OF NEW YORK     )
                      ) ss.:
COUNTY OF NEW YORK    )


          On the 29th day of September, 1998, before me, a notary public
in and for said State, personally appeared Michelle Roos, known to me to
be a Vice President of Bankers Trust Company of California, N.A., the
corporation that executed the within instrument, and also known to me to be the
person who executed it on behalf of said corporation, and acknowledged to me
that such corporation executed the within instrument.

          IN WITNESS WHEREOF, I have hereunto set my hand and affixed my
official seal the day and year in this certificate first above written.



                                               /s/ Megan Walsh
                                               ----------------------
                                                   Megan Walsh
                                                   Notary Public



[Notarial Seal]

<PAGE>
                                    EXHIBIT A

                           FORM OF CLASS A CERTIFICATE

                  SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE
IS A "REGULAR INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT," AS THOSE
TERMS ARE DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL
REVENUE CODE OF 1986 (THE "CODE").

                  [THE FOLLOWING INFORMATION IS PROVIDED SOLELY FOR THE PURPOSES
OF APPLYING THE U.S. FEDERAL INCOME TAX ORIGINAL ISSUE DISCOUNT ("OID") RULES TO
THIS CERTIFICATE. THE ISSUE DATE OF THIS CERTIFICATE IS SEPTEMBER 29, 1998.
ASSUMING THAT THE MORTGAGE LOANS PREPAY AT ___% OF THE STANDARD PREPAYMENT
ASSUMPTION (AS DESCRIBED IN THE PROSPECTUS SUPPLEMENT), [AND ASSUMING A CONSTANT
PASS-THROUGH RATE EQUAL TO THE INITIAL PASS-THROUGH RATE,] THIS CERTIFICATE HAS
BEEN ISSUED WITH NO MORE THAN $_____ OF OID PER $1,000 OF INITIAL CERTIFICATE
PRINCIPAL BALANCE, THE YIELD TO MATURITY IS ___% AND THE AMOUNT OF OID
ATTRIBUTABLE TO THE INITIAL ACCRUAL PERIOD IS NO MORE THAN $_______ PER $1,000
OF INITIAL CERTIFICATE PRINCIPAL BALANCE, COMPUTED USING THE APPROXIMATE METHOD.
NO REPRESENTATION IS MADE THAT THE MORTGAGE LOANS WILL PREPAY AT A RATE BASED ON
THE STANDARD PREPAYMENT ASSUMPTION OR AT ANY OTHER RATE OR AS TO THE CONSTANCY
OF THE PASS-THROUGH RATE.]

                  [NO TRANSFER OF THIS CERTIFICATE MAY BE MADE TO ANY PERSON,
UNLESS THE TRANSFEREE PROVIDES EITHER A CERTIFICATION PURSUANT TO SECTION
5.02(D) OF THE AGREEMENT OR AN OPINION OF COUNSEL SATISFACTORY TO THE TRUSTEE
THAT THE PURCHASE OF THIS CERTIFICATE WILL NOT CONSTITUTE OR RESULT IN A
NON-EXEMPT PROHIBITED TRANSACTION UNDER SECTION 406 OF THE EMPLOYEE RETIREMENT
INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR SECTION 4975 OF THE CODE
AND WILL NOT SUBJECT THE MASTER SERVICER, THE COMPANY OR THE TRUSTEE TO ANY
OBLIGATION OR LIABILITY IN ADDITION TO THOSE UNDERTAKEN IN THE AGREEMENT.]



<PAGE>


                                       -2-

Certificate No. __                    [_____%] [Adjustable][Variable]
                                      Pass-Through Rate
Class A-__ Senior

Date of Pooling and Servicing         Percentage Interest: ____%
Agreement and Cut-off Date:
September 1, 1998

First Distribution Date:              Aggregate Initial [Certificate Principal
October 26, 1998                      Balance] [Notional Amount] of the Class 
                                      A-__ Certificates:  $____________

Master Servicer:                      Initial [Certificate Principal
PNC Mortgage Securities Corp.         Balance] [Notional Amount] of this 
                                      Certificate:  $_____________

Assumed Final                         CUSIP _________
Distribution Date:
September 25, 2028


                        MORTGAGE PASS-THROUGH CERTIFICATE
                                  SERIES 1998-3

         evidencing a percentage interest in the distributions
         allocable to the Class A-__ Certificates with respect to a
         Trust Fund consisting primarily of a pool of conforming one-
         to four-family fixed interest rate first mortgage loans
         formed and sold by IMPAC SECURED ASSETS CORP.

                  This Certificate is payable solely from the assets of the
Trust Fund, and does not represent an obligation of or interest in Impac Secured
Assets Corp., the Master Servicer, the Trustee referred to below or any of their
affiliates. Neither this Certificate nor the underlying Mortgage Loans are
guaranteed or insured by any governmental agency or instrumentality or by Impac
Secured Assets Corp., the Master Servicer, the Trustee or any of their
affiliates. None of the Company, the Master Servicer or any of their affiliates
will have any obligation with respect to any certificate or other obligation
secured by or payable from payments on the Certificates.

                  This certifies that _____________________________ is the
registered owner of the Percentage Interest evidenced by this Certificate
(obtained by dividing the Initial [Certificate Principal Balance] [Notional
Amount] of this Certificate by the aggregate Initial [Certificate Principal
Balance] [Notional Amount] of all Class A-___ Certificates, both as specified
above) in certain distributions with respect to the Trust Fund consisting
primarily of an interest in a pool of conventional one- to four-family fixed
interest rate first mortgage loans (the "Mortgage Loans"), formed and sold by
Impac Secured Assets Corp. (hereinafter called the "Company," which term



<PAGE>


                                       -3-

includes any successor entity under the Agreement referred to below). The Trust
Fund was created pursuant to a Pooling and Servicing Agreement dated as
specified above (the "Agreement") among the Company, the Master Servicer and
Bankers Trust Company of California, N.A. as trustee (the "Trustee"), a summary
of certain of the pertinent provisions of which is set forth hereafter. To the
extent not defined herein, the capitalized terms used herein have the meanings
assigned in the Agreement. This Certificate is issued under and is subject to
the terms, provisions and conditions of the Agreement, to which Agreement the
Holder of this Certificate by virtue of the acceptance hereof assents and by
which such Holder is bound.

                  Pursuant to the terms of the Agreement, a distribution will be
made on the 25th day of each month or, if such 25th day is not a Business Day,
the Business Day immediately following (the "Distribution Date"), commencing as
described in the Agreement, to the Person in whose name this Certificate is
registered at the close of business on the last day (or if such last day is not
a Business Day, the Business Day immediately preceding such last day) of the
month immediately preceding the month of such distribution (the "Record Date"),
from the Available Distribution Amount in an amount equal to the product of the
Percentage Interest evidenced by this Certificate and the amount of [interest
and] [principal], if any, required to be distributed to Holders of Class A-__
Certificates on such Distribution Date.

                  Distributions on this Certificate will be made either by the
Master Servicer acting on behalf of the Trustee or by a Paying Agent appointed
by the Trustee in immediately available funds (by wire transfer or otherwise)
for the account of the Person entitled thereto if such Person shall have so
notified the Master Servicer or such Paying Agent, or by check mailed to the
address of the Person entitled thereto, as such name and address shall appear on
the Certificate Register.

                  Notwithstanding the above, the final distribution on this
Certificate will be made after due notice of the pendency of such distribution
and only upon presentation and surrender of this Certificate at the office or
agency appointed by the Trustee for that purpose in the City and State of New
York. The Initial [Certificate Principal Balance] [Notional Amount] of this
Certificate is set forth above. The [Certificate Principal Balance] [Notional
Amount] hereof will be reduced to the extent of distributions allocable to
principal and any Realized Losses allocable hereto.

                  This Certificate is one of a duly authorized issue of
Certificates issued in several Classes designated as Mortgage Pass-Through
Certificates of the Series specified hereon (herein collectively called the
"Certificates").

                  The Certificates are limited in right of payment to certain
collections and recoveries respecting the Mortgage Loans, all as more
specifically set forth herein and in the Agreement. In the event Master Servicer
funds are advanced with respect to any Mortgage Loan, such advance is
reimbursable to the Master Servicer, to the extent provided in the Agreement,
from related recoveries on such Mortgage Loan or from other cash that would have
been distributable to Certificateholders.




<PAGE>


                                       -4-

                  As provided in the Agreement, withdrawals from the Custodial
Account and/or the Certificate Account created for the benefit of
Certificateholders may be made by the Master Servicer from time to time for
purposes other than distributions to Certificateholders, such purposes including
without limitation reimbursement to the Company and the Master Servicer of
advances made, or certain expenses incurred, by either of them.

                  The Agreement permits, with certain exceptions therein
provided, the amendment of the Agreement and the modification of the rights and
obligations of the Company, the Master Servicer and the Trustee and the rights
of the Certificateholders under the Agreement at any time by the Company, the
Master Servicer and the Trustee with the consent of the Holders of Certificates
evidencing in the aggregate not less than 66% of the Percentage Interests of
each Class of Certificates affected thereby. Any such consent by the Holder of
this Certificate shall be conclusive and binding on such Holder and upon all
future holders of this Certificate and of any Certificate issued upon the
transfer hereof or in exchange herefor or in lieu hereof whether or not notation
of such consent is made upon the Certificate. The Agreement also permits the
amendment thereof in certain circumstances without the consent of the Holders of
any of the Certificates and, in certain additional circumstances, without the
consent of the Holders of certain Classes of Certificates.

                  As provided in the Agreement and subject to certain
limitations therein set forth, the transfer of this Certificate is registrable
in the Certificate Register upon surrender of this Certificate for registration
of transfer at the offices or agencies appointed by the Trustee in the City and
State of New York, duly endorsed by, or accompanied by an assignment in the form
below or other written instrument of transfer in form satisfactory to the
Trustee and the Certificate Registrar duly executed by the Holder hereof or such
Holder's attorney duly authorized in writing, and thereupon one or more new
Certificates of authorized denominations evidencing the same Class and aggregate
Percentage Interest will be issued to the designated transferee or transferees.

                  The Certificates are issuable only as registered Certificates
without coupons in Classes and in denominations specified in the Agreement. As
provided in the Agreement and subject to certain limitations therein set forth,
Certificates are exchangeable for new Certificates of authorized denominations
evidencing the same Class and aggregate Percentage Interest, as requested by the
Holder surrendering the same.

                  No service charge will be made for any such registration of
transfer or exchange, but the Trustee may require payment of a sum sufficient to
cover any tax or other governmental charge payable in connection therewith.

                  The Company, the Master Servicer, the Trustee and the
Certificate Registrar and any agent of the Company, the Master Servicer, the
Trustee or the Certificate Registrar may treat the Person in whose name this
Certificate is registered as the owner hereof for all purposes, and neither the
Company, the Master Servicer, the Trustee nor any such agent shall be affected
by notice to the contrary.




<PAGE>


                                       -5-

                  This Certificate shall be governed by and construed in
accordance with the laws of the State of New York.

                  The obligations created by the Agreement in respect of the
Certificates and the Trust Fund created thereby shall terminate upon the payment
to Certificateholders of all amounts held by or on behalf of the Trustee and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the maturity or other liquidation of the last Mortgage Loan subject thereto
or the disposition of all property acquired upon foreclosure or deed in lieu of
foreclosure of any Mortgage Loan and (ii) the purchase by the Master Servicer or
the Company from the Trust Fund of all remaining Mortgage Loans and all property
acquired in respect of such Mortgage Loans, thereby effecting early retirement
of the Certificates. The Agreement permits, but does not require, the Master
Servicer or the Company to (i) purchase at a price determined as provided in the
Agreement all remaining Mortgage Loans and all property acquired in respect of
any Mortgage Loan or (ii) purchase in whole, but not in part, all of the
Certificates from the Holders thereof; provided, that any such option may only
be exercised if the Pool Stated Principal Balance of the Mortgage Loans as of
the Distribution Date upon which the proceeds of any such purchase are
distributed is less than ten percent of the Cut-off Date Principal Balance of
the Mortgage Loans.

                  Reference is hereby made to the further provisions of this
Certificate set forth on the reverse hereof, which further provisions shall for
all purposes have the same effect as if set forth at this place.

                  Unless the certificate of authentication hereon has been
executed by the Certificate Registrar, by manual signature, this Certificate
shall not be entitled to any benefit under the Agreement or be valid for any
purpose.



<PAGE>


                                       -6-

                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed.


Dated: September 29, 1998          BANKERS TRUST COMPANY OF CALIFORNIA, N.A.,
                                        as Trustee


                                        By:_____________________________________
                                           Authorized Signatory



                          CERTIFICATE OF AUTHENTICATION
                          -----------------------------

                  This is one of the Class A-__ Certificates referred to in the
within-mentioned Agreement.

                                   BANKERS TRUST COMPANY OF CALIFORNIA, N.A.,
                                        as Certificate Registrar


                                        By:_____________________________________
                                           Authorized Signatory





<PAGE>


                                       -7-

                                   ASSIGNMENT


                  FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s)
and transfer(s) unto ___________________________________________________ (Please
print or typewrite name and address including postal zip code of assignee) a
Percentage Interest evidenced by the within Mortgage Pass-Through Certificate
and hereby authorizes the transfer of registration of such interest to assignee
on the Certificate Register of the Trust Fund.

                  I (We) further direct the Certificate Registrar to issue a new
Certificate of a like denomination and Class, to the above named assignee and
deliver such Certificate to the following address:______________________________
________________________________________________________________________________





Dated:                              ____________________________________________
                                    Signature by or on behalf of assignor



                                        ________________________________________
                                                  Signature Guaranteed

                            DISTRIBUTION INSTRUCTIONS

                  The assignee should include the following for purposes of
distribution:

                  Distributions shall be made, by wire transfer or otherwise, in
immediately available funds to _______________________________________ for the
account of __________________________ account number _________________, or, if
mailed by check, to _________________________ Applicable statements should be
mailed to _____________________________.

                  This information is provided by _____________________________,
the assignee named above, or __________________________________, as its agent.



<PAGE>


                                   EXHIBIT B-1

                           FORM OF CLASS B CERTIFICATE

         THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE SENIOR
CERTIFICATES, THE EXCESS SERVICING STRIP AND THE CLASS M CERTIFICATES [AND THE
CLASS B-1 CERTIFICATES, AND THE CLASS B-2 CERTIFICATES] AS DESCRIBED IN THE
AGREEMENT (AS DEFINED HEREIN).

         THIS CERTIFICATE HAS NOT BEEN AND WILL NOT BE REGISTERED UNDER THE
SECURITIES ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND MAY
NOT BE RESOLD OR TRANSFERRED UNLESS IT IS REGISTERED PURSUANT TO SUCH ACT AND
LAWS OR IS SOLD OR TRANSFERRED IN TRANSACTIONS WHICH ARE EXEMPT FROM
REGISTRATION UNDER SUCH ACT AND UNDER APPLICABLE STATE LAW AND IS TRANSFERRED IN
ACCORDANCE WITH THE PROVISIONS OF SECTION 5.02 OF THE AGREEMENT.

         NO TRANSFER OF THIS CERTIFICATE MAY BE MADE TO ANY PERSON, UNLESS THE
TRANSFEREE PROVIDES EITHER A CERTIFICATION PURSUANT TO SECTION 5.02(D) OF THE
AGREEMENT OR AN OPINION OF COUNSEL SATISFACTORY TO THE TRUSTEE THAT THE PURCHASE
OF THIS CERTIFICATE WILL NOT CONSTITUTE OR RESULT IN A NON-EXEMPT PROHIBITED
TRANSACTION UNDER SECTION 406 OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974, AS AMENDED ("ERISA"), OR SECTION 4975 OF THE CODE AND WILL NOT SUBJECT THE
MASTER SERVICER, THE COMPANY OR THE TRUSTEE TO ANY OBLIGATION OR LIABILITY IN
ADDITION TO THOSE UNDERTAKEN IN THE AGREEMENT.



<PAGE>


                                       -2-

Certificate No. __                          _____ % Pass-Through Rate

Class B-__ Subordinate                      Aggregate Certificate
                                            Principal Balance
                                            of the Class B-__
                                            Certificates as of
Date of Pooling and Servicing               the Cut-off Date:
Agreement and Cut-off Date:                 $_______________
September 1, 1998
                                            Initial Certificate Principal
                                            Balance of this Certificate:
First Distribution Date:                    $_______________
October 26, 1998

Master Servicer:
PNC Mortgage Securities Corp.

Assumed Final Distribution Date:
September 25, 2028

                       MORTGAGE PASS-THROUGH CERTIFICATE,
                                  Series 1998-3

         evidencing a percentage interest in any distributions
         allocable to the Class B-__ Certificates with respect to the
         Trust Fund consisting primarily of a pool of conforming one-
         to four-family fixed interest rate first mortgage loans
         formed and sold by IMPAC SECURED ASSETS CORP.

                  This Certificate is payable solely from the assets of the
Trust Fund, and does not represent an obligation of or interest in Impac Secured
Assets Corp., the Master Servicer, the Trustee referred to below or any of their
affiliates. Neither this Certificate nor the underlying Mortgage Loans are
guaranteed or insured by any governmental agency or instrumentality or by Impac
Secured Assets Corp., the Master Servicer, the Trustee or any of their
affiliates. None of the Company, the Master Servicer or any of their affiliates
will have any obligation with respect to any certificate or other obligation
secured by or payable from payments on the Certificates.

                  This certifies that ____________________ is the registered
owner of the Percentage Interest evidenced by this Certificate (obtained by
dividing the Certificate Principal Balance of this Certificate by the aggregate
Certificate Principal Balance of all Class B-__ Certificates, both as specified
above) in certain distributions with respect to a Trust Fund consisting
primarily of a pool of conforming one- to four-family fixed interest rate first
mortgage loans (the "Mortgage Loans"), formed and sold by Impac Secured Assets
Corp. (hereinafter called the "Company," which term includes any successor
entity under the Agreement referred to below). The Trust Fund was created
pursuant to a Pooling and Servicing Agreement dated as specified above (the
"Agreement")



<PAGE>


                                       -3-

among the Company, the Master Servicer and Bankers Trust Company of California,
N.A., as trustee (the "Trustee"), a summary of certain of the pertinent
provisions of which is set forth hereafter. To the extent not defined herein,
the capitalized terms used herein have the meanings assigned in the Agreement.
This Certificate is issued under and is subject to the terms, provisions and
conditions of the Agreement, to which Agreement the Holder of this Certificate
by virtue of the acceptance hereof assents and by which such Holder is bound.

                  Pursuant to the terms of the Agreement, a distribution will be
made on the 25th day of each month or, if such 25th day is not a Business Day,
the Business Day immediately following (the "Distribution Date"), commencing on
the first Distribution Date specified above, to the Person in whose name this
Certificate is registered at the close of business on the last day (or if such
last day is not a Business Day, the Business Day immediately preceding such last
day) of the month next preceding the month of such distribution (the "Record
Date"), from the Available Distribution Amount in an amount equal to the product
of the Percentage Interest evidenced by this Certificate and the amount (of
interest and principal, if any) required to be distributed to Holders of Class
B-__ Certificates on such Distribution Date.

                  Distributions on this Certificate will be made either by the
Trustee or by a Paying Agent appointed by the Trustee in immediately available
funds (by wire transfer or otherwise) for the account of the Holder entitled
thereto if such Holder shall have so notified the Trustee or such Paying Agent
at least 5 Business Days prior to the related Record Date and such Holder is the
registered owner of Certificates the aggregate Initial Certificate Principal
Balance of which is not less than $2,500,000, or by check mailed to the address
of the Holder entitled thereto, as such name and address shall appear on the
Certificate Register.

                  Notwithstanding the above, the final distribution on this
Certificate will be made after due notice of the pendency of such distribution
and only upon presentation and surrender of this Certificate at the office or
agency appointed by the Trustee for that purpose in the City and State of New
York. The Initial Certificate Principal Balance of this Certificate is set forth
above. The Certificate Principal Balance hereof will be reduced to the extent of
the distributions allocable to principal and any Realized Losses allocable
hereto.

                  No transfer of this Class B-__ Certificate will be made unless
such transfer is exempt from the registration requirements of the Securities Act
of 1933, as amended, and any applicable state securities laws or is made in
accordance with said Act and laws. In the event that such a transfer is to be
made, (i) the Trustee shall require an opinion of counsel acceptable to and in
form and substance satisfactory to the Trustee that such transfer is exempt
(describing the applicable exemption and the basis therefor) from or is being
made pursuant to the registration requirements of the Securities Act of 1933, as
amended, and of any applicable statute of any state and (ii) the transferee and
transferor shall execute a representation letter in the form described by the
Agreement. The Holder hereof desiring to effect such transfer shall, and does
hereby agree to, indemnify the Trustee, the Company, the Master Servicer and the
Certificate Registrar acting on behalf of the Trustee against any liability that
may result if the transfer is not so exempt or is not made in accordance with
such Federal and state laws. In connection with any such transfer,



<PAGE>


                                       -4-

the Trustee will also require either (i) an opinion of counsel acceptable to and
in form and substance satisfactory to the Trustee with respect to the
permissibility of such transfer under the Employee Retirement Income Security
Act of 1974, as amended ("ERISA") and Section 4975 of the Internal Revenue Code
(the "Code") and stating, among other things, that the transferee's acquisition
of a Class B Certificate will not constitute or result in a non-exempt
prohibited transaction under Section 406 of ERISA or Section 4975 of the Code or
(ii) a representation letter, in the form as described by the Agreement, either
stating that the transferee is not an employee benefit or other plan subject to
the prohibited transaction provisions of ERISA or Section 4975 of the Code (a
"Plan"), or any other person (including an investment manager, a named fiduciary
or a trustee of any Plan) acting, directly or indirectly, on behalf of or
purchasing any Certificate with "plan assets" of any Plan, or stating that the
transferee is an insurance company, the source of funds to be used by it to
purchase the Certificate is an "insurance company general account" (within the
meaning of Department of Labor Prohibited Transaction Class Exemption ("PTCE")
95-60), and the purchase is being made in reliance upon the availability of the
exemptive relief afforded under Section III of PTCE 95-60.

                  This Certificate is one of a duly authorized issue of
Certificates issued in several Classes designated as Mortgage Pass-Through
Certificates of the Series specified hereon (herein collectively called the
"Certificates").

                  The Certificates are limited in right of payment to certain
collections and recoveries respecting the Mortgage Loans, all as more
specifically set forth herein and in the Agreement. In the event Master Servicer
funds are advanced with respect to any Mortgage Loan, such advance is
reimbursable to the Master Servicer, to the extent provided in the Agreement,
from related recoveries on such Mortgage Loan or from other cash that would have
been distributable to Certificateholders.

                  As provided in the Agreement, withdrawals from the Custodial
Account and/or the Certificate Account created for the benefit of
Certificateholders may be made by the Master Servicer from time to time for
purposes other than distributions to Certificateholders, such purposes including
without limitation reimbursement to the Company and the Master Servicer of
advances made, or certain expenses incurred, by either of them.

                  The Agreement permits, with certain exceptions therein
provided, the amendment of the Agreement and the modification of the rights and
obligations of the Company, the Master Servicer and the Trustee and the rights
of the Certificateholders under the Agreement at any time by the Company, the
Master Servicer and the Trustee with the consent of the Holders of Certificates
evidencing in the aggregate not less than 66% of the Percentage Interests of
each Class of Certificates affected thereby. Any such consent by the Holder of
this Certificate shall be conclusive and binding on such Holder and upon all
future holders of this Certificate and of any Certificate issued upon the
transfer hereof or in exchange herefor or in lieu hereof whether or not notation
of such consent is made upon the Certificate. The Agreement also permits the
amendment thereof in certain circumstances without the consent of the Holders of
any of the Certificates and,



<PAGE>


                                       -5-

in certain additional circumstances, without the consent of the Holders of
certain Classes of Certificates.

                  As provided in the Agreement and subject to certain
limitations therein set forth, the transfer of this Certificate is registrable
in the Certificate Register upon surrender of this Certificate for registration
of transfer at the offices or agencies appointed by the Trustee in the City and
State of New York, duly endorsed by, or accompanied by an assignment in the form
below or other written instrument of transfer in form satisfactory to the
Trustee and the Certificate Registrar duly executed by the Holder hereof or such
Holder's attorney duly authorized in writing, and thereupon one or more new
Certificates of authorized denominations evidencing the same Class and aggregate
Percentage Interest will be issued to the designated transferee or transferees.

                  The Certificates are issuable only as registered Certificates
without coupons in Classes and in denominations specified in the Agreement. As
provided in the Agreement and subject to certain limitations therein set forth,
Certificates are exchangeable for new Certificates of authorized denominations
evidencing the same Class and aggregate Percentage Interest, as requested by the
Holder surrendering the same.

                  No service charge will be made for any such registration of
transfer or exchange, but the Trustee may require payment of a sum sufficient to
cover any tax or other governmental charge payable in connection therewith.

                  The Company, the Master Servicer, the Trustee and the
Certificate Registrar and any agent of the Company, the Master Servicer, the
Trustee or the Certificate Registrar may treat the Person in whose name this
Certificate is registered as the owner hereof for all purposes, and neither the
Company, the Master Servicer, the Trustee nor any such agent shall be affected
by notice to the contrary.

                  This Certificate shall be governed by and construed in
accordance with the laws of the State of New York.

                  The obligations created by the Agreement in respect of the
Certificates and the Trust Fund created thereby shall terminate upon the payment
to Certificateholders of all amounts held by or on behalf of the Trustee and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the maturity or other liquidation of the last Mortgage Loan subject thereto
or the disposition of all property acquired upon foreclosure or deed in lieu of
foreclosure of any Mortgage Loan and (ii) the purchase by the Master Servicer or
the Company from the Trust Fund of all remaining Mortgage Loans and all property
acquired in respect of such Mortgage Loans, thereby effecting early retirement
of the Certificates. The Agreement permits, but does not require, the Master
Servicer or the Company to (i) purchase at a price determined as provided in the
Agreement all remaining Mortgage Loans and all property acquired in respect of
any Mortgage Loan or (ii) purchase in whole, but not in part, all of the
Certificates from the Holders thereof; provided, that any such option may only
be exercised if the Pool Stated Principal Balance of the Mortgage Loans as of
the Distribution Date upon which the proceeds of any such purchase



<PAGE>


                                       -6-

are distributed is less than ten percent of the Cut-off Date Principal Balance
of the Mortgage Loans.

                  Unless the certificate of authentication hereon has been
executed by the Certificate Registrar, by manual signature, this Certificate
shall not be entitled to any benefit under the Agreement or be valid for any
purpose.



<PAGE>


                                       -7-

                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed.


Dated:                             BANKERS TRUST COMPANY OF CALIFORNIA, N.A.,
                                        as Trustee


                                        By:_____________________________________
                                           Authorized Signatory



                          CERTIFICATE OF AUTHENTICATION
                          -----------------------------

                  This is one of the Class A-__ Certificates referred to in the
within-mentioned Agreement.

                                   BANKERS TRUST COMPANY OF CALIFORNIA, N.A.,
                                        as Certificate Registrar


                                        By:_____________________________________
                                           Authorized Signatory





<PAGE>


                                       -8-

                                   ASSIGNMENT


                  FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s)
and transfer(s) unto ___________________________________________________ (Please
print or typewrite name and address including postal zip code of assignee) a
Percentage Interest evidenced by the within Mortgage Pass-Through Certificate
and hereby authorizes the transfer of registration of such interest to assignee
on the Certificate Register of the Trust Fund.

                  I (We) further direct the Certificate Registrar to issue a new
Certificate of a like denomination and Class, to the above named assignee and
deliver such Certificate to the following address:______________________________
________________________________________________________________________________





Dated:                              ____________________________________________
                                    Signature by or on behalf of assignor



                                        ________________________________________
                                                  Signature Guaranteed

                            DISTRIBUTION INSTRUCTIONS

                  The assignee should include the following for purposes of
distribution:

                  Distributions shall be made, by wire transfer or otherwise, in
immediately available funds to _______________________________________ for the
account of __________________________ account number _________________, or, if
mailed by check, to _________________________ Applicable statements should be
mailed to _____________________________.

                  This information is provided by _____________________________,
the assignee named above, or __________________________________, as its agent.



<PAGE>


                                   EXHIBIT B-2

                           FORM OF CLASS M CERTIFICATE

         THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE SENIOR
CERTIFICATES, THE EXCESS SERVICING STRIP, [THE CLASS M-1 CERTIFICATES AND THE
CLASS M-2 CERTIFICATES] AS DESCRIBED IN THE AGREEMENT (AS DEFINED BELOW).

         SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A
"REGULAR INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT," AS THOSE
TERMS ARE DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL
REVENUE CODE OF 1986 (THE "CODE").

         ANY PERSON PURCHASING A CLASS M-__ CERTIFICATE SHALL BE DEEMED TO HAVE
REPRESENTED THAT EITHER: (I) SUCH PERSON IS NOT A PLAN SUBJECT TO ERISA OR THE
CODE (OR COMPARABLE PROVISIONS OF ANY SUBSEQUENT ENACTMENTS) AND IS NOT ACTING,
DIRECTLY OR INDIRECTLY, ON BEHALF OF ANY SUCH PLAN OR ACQUIRING SUCH CERTIFICATE
WITH PLAN ASSETS; OR (II) THE PURCHASE OF SUCH CERTIFICATE IS PERMISSIBLE UNDER
APPLICABLE LAW, WILL NOT CONSTITUTE OR RESULT IN ANY NON-EXEMPT PROHIBITED
TRANSACTION UNDER ERISA OR SECTION 4975 OF THE CODE, WILL NOT SUBJECT THE
COMPANY, THE TRUSTEE OR THE MASTER SERVICER TO ANY OBLIGATION OR LIABILITY
(INCLUDING OBLIGATIONS OR LIABILITIES UNDER ERISA OR SECTION 4975 OF THE CODE)
IN ADDITION TO THOSE UNDERTAKEN IN THIS AGREEMENT AND THE EXEMPTIVE RELIEF
GRANTED BY THE DOL PURSUANT TO PROHIBITED TRANSACTION CLASS EXEMPTION 95-60 IS
AVAILABLE WITH RESPECT TO THE PURCHASE, SALE AND HOLDING OF SUCH CERTIFICATE.

         [THE FOLLOWING INFORMATION IS PROVIDED SOLELY FOR THE PURPOSES OF
APPLYING THE U.S. FEDERAL INCOME TAX ORIGINAL ISSUE DISCOUNT ("OID") RULES TO
THIS CERTIFICATE. THE ISSUE DATE OF THIS CERTIFICATE IS SEPTEMBER 29, 1998.
ASSUMING THAT THE MORTGAGE LOANS PREPAY AT 100% OF THE STANDARD PREPAYMENT
ASSUMPTION (AS DESCRIBED IN THE PROSPECTUS SUPPLEMENT), AND ASSUMING A CONSTANT
PASS- THROUGH RATE EQUAL TO THE INITIAL PASS-THROUGH RATE, THIS CERTIFICATE HAS
BEEN ISSUED WITH NO MORE THAN $______ OF OID PER $1,000 OF INITIAL CERTIFICATE
PRINCIPAL BALANCE, THE YIELD TO MATURITY IS ______% AND THE AMOUNT OF OID
ATTRIBUTABLE TO THE INITIAL ACCRUAL PERIOD IS NO MORE THAN $______ PER $1,000 OF
INITIAL CERTIFICATE PRINCIPAL BALANCE, COMPUTED UNDER THE APPROXIMATE METHOD. NO
REPRESENTATION IS MADE THAT THE MORTGAGE LOANS WILL PREPAY AT A RATE BASED ON
THE STANDARD PREPAYMENT ASSUMPTION OR AT ANY OTHER RATE.]




<PAGE>


                                       -2-


Certificate No. __                       ______% Pass-Through Rate
Class M-__ Subordinate                   Aggregate Certificate Principal Balance
                                         of the Class M-__ Certificates:
                                         $________________

Date of Pooling and Servicing            Initial Certificate Principal
Agreement and Cut-off Date:              of this Certificate:
September 1, 1998                        $_______________

First Distribution Date:                 CUSIP: ______________
October 26, 1998

Master Servicer:
PNC Mortgage Securities Corp.

Assumed Final Distribution Date:
September 25, 2028


                       MORTGAGE PASS-THROUGH CERTIFICATE,
                                  Series 1998-3

         evidencing a percentage interest in any distributions
         allocable to the Class M-__ Certificates with respect to the
         Trust Fund consisting primarily of a pool of conforming one-
         to four-family fixed interest rate first mortgage loans
         formed and sold by IMPAC SECURED ASSETS CORP.

                  This Certificate is payable solely from the assets of the
Trust Fund, and does not represent an obligation of or interest in Impac Secured
Assets Corp., the Master Servicer, the Trustee referred to below or any of their
affiliates. Neither this Certificate nor the underlying Mortgage Loans are
guaranteed or insured by any governmental agency or instrumentality or by Impac
Secured Assets Corp., the Master Servicer, the Trustee or any of their
affiliates. None of the Company, the Master Servicer or any of their affiliates
will have any obligation with respect to any certificate or other obligation
secured by or payable from payments on the Certificates.

                  This certifies that Cede & Co. is the registered owner of the
Percentage Interest evidenced by this Certificate (obtained by dividing the
Certificate Principal Balance of this Certificate by the aggregate Certificate
Principal Balance of all Class M-__ Certificates, both as specified above) in
certain distributions with respect to a Trust Fund consisting primarily of a
pool of conforming one- to four-family fixed interest rate first mortgage loans
(the "Mortgage Loans"), formed and sold by Impac Secured Assets Corp.
(hereinafter called the "Company," which term includes any successor entity
under the Agreement referred to below). The Trust Fund was created pursuant to a
Pooling and Servicing Agreement dated as specified above (the "Agreement") among
the Company, the Master Servicer and Bankers Trust Company of California, N.A.,
as



<PAGE>


                                       -3-

trustee (the "Trustee"), a summary of certain of the pertinent provisions of
which is set forth hereafter. To the extent not defined herein, the capitalized
terms used herein have the meanings assigned in the Agreement. This Certificate
is issued under and is subject to the terms, provisions and conditions of the
Agreement, to which Agreement the Holder of this Certificate by virtue of the
acceptance hereof assents and by which such Holder is bound.

                  Pursuant to the terms of the Agreement, a distribution will be
made on the 25th day of each month or, if such 25th day is not a Business Day,
the Business Day immediately following (the "Distribution Date"), commencing as
described in the Agreement, to the Person in whose name this Certificate is
registered at the close of business on the last day (or if such last day is not
a Business Day, the Business Day immediately preceding such last day) of the
month immediately preceding the month of such distribution (the "Record Date"),
from the Available Distribution Amount in an amount equal to the product of the
Percentage Interest evidenced by this Certificate and the amount (of interest
and principal, if any) required to be distributed to Holders of Class M- __
Certificates on such Distribution Date.

                  Distributions on this Certificate will be made either by the
Trustee or by a Paying Agent appointed by the Trustee in immediately available
funds (by wire transfer or otherwise) for the account of the Holder entitled
thereto if such Holder shall have so notified the Trustee or such Paying Agent
at least 5 Business Days prior to the related Record Date and such Holder is the
registered owner of Certificates the aggregate Initial Certificate Principal
Balance of which is not less than $2,500,000, or by check mailed to the address
of the Holder entitled thereto, as such name and address shall appear on the
Certificate Register.

                  Notwithstanding the above, the final distribution on this
Certificate will be made after due notice of the pendency of such distribution
and only upon presentation and surrender of this Certificate at the office or
agency appointed by the Trustee for that purpose in the City and State of New
York. The Initial Certificate Principal Balance of this Certificate is set forth
above. The Certificate Principal Balance hereof will be reduced to the extent of
the distributions allocable to principal and any Realized Losses allocable
hereto.

                  Any person purchasing a Class M-__ Certificate shall be deemed
to have represented that either: (i) such person is not a Plan subject to ERISA
or the Code (or comparable provisions of any subsequent enactments) and is not
acting, directly or indirectly, on behalf of any such Plan or acquiring such
Certificate with Plan Assets; or (ii) the purchase of such Certificate is
permissible under applicable law, will not constitute or result in any
non-exempt prohibited transaction under ERISA or Section 4975 of the Code, will
not subject the Company, the Trustee or the Master Servicer to any obligation or
liability (including obligations or liabilities under ERISA or Section 4975 of
the Code) in addition to those undertaken in this Agreement and the exemptive
relief granted by the DOL pursuant to Prohibited Transaction Class Exemption
95-60 is available with respect to the purchase, sale and holding of such
Certificate.




<PAGE>


                                       -4-

                  This Certificate is one of a duly authorized issue of
Certificates issued in several Classes designated as Mortgage Pass-Through
Certificates of the Series specified hereon (herein collectively called the
"Certificates").

                  The Certificates are limited in right of payment to certain
collections and recoveries respecting the Mortgage Loans, all as more
specifically set forth herein and in the Agreement. In the event Master Servicer
funds are advanced with respect to any Mortgage Loan, such advance is
reimbursable to the Master Servicer, to the extent provided in the Agreement,
from related recoveries on such Mortgage Loan or from other cash that would have
been distributable to Certificateholders.

                  As provided in the Agreement, withdrawals from the Custodial
Account and/or the Certificate Account created for the benefit of
Certificateholders may be made by the Master Servicer from time to time for
purposes other than distributions to Certificateholders, such purposes including
without limitation reimbursement to the Company and the Master Servicer of
advances made, or certain expenses incurred, by either of them.

                  The Agreement permits, with certain exceptions therein
provided, the amendment of the Agreement and the modification of the rights and
obligations of the Company, the Master Servicer and the Trustee and the rights
of the Certificateholders under the Agreement at any time by the Company, the
Master Servicer and the Trustee with the consent of the Holders of Certificates
evidencing in the aggregate not less than 66% of the Percentage Interests of
each Class of Certificates affected thereby. Any such consent by the Holder of
this Certificate shall be conclusive and binding on such Holder and upon all
future holders of this Certificate and of any Certificate issued upon the
transfer hereof or in exchange herefor or in lieu hereof whether or not notation
of such consent is made upon the Certificate. The Agreement also permits the
amendment thereof in certain circumstances without the consent of the Holders of
any of the Certificates and, in certain additional circumstances, without the
consent of the Holders of certain Classes of Certificates.

                  As provided in the Agreement and subject to certain
limitations therein set forth, the transfer of this Certificate is registrable
in the Certificate Register upon surrender of this Certificate for registration
of transfer at the offices or agencies appointed by the Trustee in the City and
State of New York, duly endorsed by, or accompanied by an assignment in the form
below or other written instrument of transfer in form satisfactory to the
Trustee and the Certificate Registrar duly executed by the Holder hereof or such
Holder's attorney duly authorized in writing, and thereupon one or more new
Certificates of authorized denominations evidencing the same Class and aggregate
Percentage Interest will be issued to the designated transferee or transferees.

                  The Certificates are issuable only as registered Certificates
without coupons in Classes and in denominations specified in the Agreement. As
provided in the Agreement and subject to certain limitations therein set forth,
Certificates are exchangeable for new Certificates of authorized denominations
evidencing the same Class and aggregate Percentage Interest, as requested by the
Holder surrendering the same.



<PAGE>


                                       -5-

                  No service charge will be made for any such registration of
transfer or exchange, but the Trustee may require payment of a sum sufficient to
cover any tax or other governmental charge payable in connection therewith.

                  The Company, the Master Servicer, the Trustee and the
Certificate Registrar and any agent of the Company, the Master Servicer, the
Trustee or the Certificate Registrar may treat the Person in whose name this
Certificate is registered as the owner hereof for all purposes, and neither the
Company, the Master Servicer, the Trustee nor any such agent shall be affected
by notice to the contrary.

                  This Certificate shall be governed by and construed in
accordance with the laws of the State of New York.

                  The obligations created by the Agreement in respect of the
Certificates and the Trust Fund created thereby shall terminate upon the payment
to Certificateholders of all amounts held by or on behalf of the Trustee and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the maturity or other liquidation of the last Mortgage Loan subject thereto
or the disposition of all property acquired upon foreclosure or deed in lieu of
foreclosure of any Mortgage Loan and (ii) the purchase by the Master Servicer or
the Company from the Trust Fund of all remaining Mortgage Loans and all property
acquired in respect of such Mortgage Loans, thereby effecting early retirement
of the Certificates. The Agreement permits, but does not require, the Master
Servicer or the Company to (i) purchase at a price determined as provided in the
Agreement all remaining Mortgage Loans and all property acquired in respect of
any Mortgage Loan or (ii) purchase in whole, but not in part, all of the
Certificates from the Holders thereof; provided, that any such option may only
be exercised if the Pool Stated Principal Balance of the Mortgage Loans as of
the Distribution Date upon which the proceeds of any such purchase are
distributed is less than ten percent of the Cut-off Date Principal Balance of
the Mortgage Loans.

                  Unless the certificate of authentication hereon has been
executed by the Certificate Registrar, by manual signature, this Certificate
shall not be entitled to any benefit under the
Agreement or be valid for any purpose.



<PAGE>


                                       -6-

                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed.


Dated:                             BANKERS TRUST COMPANY OF CALIFORNIA, N.A.,
                                        as Trustee


                                        By:_____________________________________
                                           Authorized Signatory



                          CERTIFICATE OF AUTHENTICATION
                          -----------------------------

                  This is one of the Class A-__ Certificates referred to in the
within-mentioned Agreement.

                                   BANKERS TRUST COMPANY OF CALIFORNIA, N.A.,
                                        as Certificate Registrar


                                        By:_____________________________________
                                           Authorized Signatory





<PAGE>


                                       -7-

                                   ASSIGNMENT


                  FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s)
and transfer(s) unto ___________________________________________________ (Please
print or typewrite name and address including postal zip code of assignee) a
Percentage Interest evidenced by the within Mortgage Pass-Through Certificate
and hereby authorizes the transfer of registration of such interest to assignee
on the Certificate Register of the Trust Fund.

                  I (We) further direct the Certificate Registrar to issue a new
Certificate of a like denomination and Class, to the above named assignee and
deliver such Certificate to the following address:______________________________
________________________________________________________________________________





Dated:                              ____________________________________________
                                    Signature by or on behalf of assignor



                                        ________________________________________
                                                  Signature Guaranteed

                            DISTRIBUTION INSTRUCTIONS

                  The assignee should include the following for purposes of
distribution:

                  Distributions shall be made, by wire transfer or otherwise, in
immediately available funds to _______________________________________ for the
account of __________________________ account number _________________, or, if
mailed by check, to _________________________ Applicable statements should be
mailed to _____________________________.

                  This information is provided by _____________________________,
the assignee named above, or __________________________________, as its agent.



<PAGE>


                                   EXHIBIT B-3

                           FORM OF CLASS R CERTIFICATE

         THIS CERTIFICATE MAY NOT BE HELD BY OR TRANSFERRED TO A NON-UNITED
STATES PERSON OR A DISQUALIFIED ORGANIZATION (AS DEFINED BELOW).

         SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A
"RESIDUAL INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT" AS THOSE
TERMS ARE DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL
REVENUE CODE OF 1986 (THE "CODE").

         NO TRANSFER OF THIS CERTIFICATE MAY BE MADE TO ANY PERSON, UNLESS THE
TRANSFEREE PROVIDES EITHER A CERTIFICATION PURSUANT TO SECTION 5.02(E) OF THE
AGREEMENT OR AN OPINION OF COUNSEL SATISFACTORY TO THE MASTER SERVICER, THE
COMPANY AND THE TRUSTEE THAT THE PURCHASE OF THIS CERTIFICATE IS PERMISSIBLE
UNDER APPLICABLE LAW, WILL NOT CONSTITUTE OR RESULT IN A NON-EXEMPT PROHIBITED
TRANSACTION UNDER SECTION 406 OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974, AS AMENDED ("ERISA"), OR SECTION 4975 OF THE CODE AND WILL NOT SUBJECT THE
MASTER SERVICER, THE COMPANY OR THE TRUSTEE TO ANY OBLIGATION OR LIABILITY IN
ADDITION TO THOSE UNDERTAKEN IN THE POOLING AND SERVICING AGREEMENT (THE
"AGREEMENT").

         ANY RESALE, TRANSFER OR OTHER DISPOSITION OF THIS CERTIFICATE MAY BE
MADE ONLY IF THE PROPOSED TRANSFEREE PROVIDES A TRANSFER AFFIDAVIT TO THE MASTER
SERVICER AND THE TRUSTEE THAT (1) SUCH TRANSFEREE IS NOT (A) THE UNITED STATES,
ANY STATE OR POLITICAL SUBDIVISION THEREOF, ANY FOREIGN GOVERNMENT, ANY
INTERNATIONAL ORGANIZATION, OR ANY AGENCY OR INSTRUMENTALITY OF ANY OF THE
FOREGOING, (B) ANY 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, (C) ANY ORGANIZATION DESCRIBED IN SECTION 1381(A)(2)(C) OF THE CODE, (ANY
SUCH PERSON DESCRIBED IN THE FOREGOING CLAUSES (A), (B) OR (C) BEING HEREIN
REFERRED TO AS A "DISQUALIFIED ORGANIZATION") OR (D) AN AGENT OF A DISQUALIFIED
ORGANIZATION, (2) NO PURPOSE OF SUCH TRANSFER IS TO IMPEDE THE ASSESSMENT OR
COLLECTION OF TAX AND (3) SUCH TRANSFEREE SATISFIES CERTAIN ADDITIONAL
CONDITIONS RELATING TO THE FINANCIAL CONDITION OF THE PROPOSED TRANSFEREE.
NOTWITHSTANDING THE REGISTRATION IN THE CERTIFICATE REGISTER OR ANY TRANSFER,
SALE OR OTHER DISPOSITION OF THIS CERTIFICATE TO A DISQUALIFIED ORGANIZATION OR
AN AGENT OF A DISQUALIFIED ORGANIZATION, SUCH



<PAGE>


                                       -2-

REGISTRATION SHALL BE DEEMED TO BE OF NO LEGAL FORCE OR EFFECT WHATSOEVER AND
SUCH PERSON SHALL NOT BE DEEMED TO BE A CERTIFICATEHOLDER FOR ANY PURPOSE
HEREUNDER, INCLUDING, BUT NOT LIMITED TO, THE RECEIPT OF DISTRIBUTIONS ON THIS
CERTIFICATE. EACH HOLDER OF THIS CERTIFICATE BY ACCEPTANCE OF THIS CERTIFICATE
SHALL BE DEEMED TO HAVE CONSENTED TO THE PROVISIONS OF THIS PARAGRAPH.



<PAGE>


                                       -3-

Certificate No. __                       ____% Pass-Through Rate

Class R Senior                           Aggregate Initial Certificate Principal
                                         Balance of the Class R Certificates:  
                                         $______________

Date of Pooling and Servicing
Agreement and Cut-off Date:
September 1, 1998                        Percentage Interest: _______%

First Distribution Date:
October 26, 1998                         Initial Certificate Principal Balance
                                         of this Certificate:  $____________

Master Servicer:
PNC Mortgage Securities Corp.            CUSIP: _____________________

Assumed Final Distribution Date:
September 25, 2028


                       MORTGAGE PASS-THROUGH CERTIFICATE,
                                  SERIES 1998-3

         evidencing a percentage interest in any distributions
         allocable to the Class R Certificates with respect to a Trust
         Fund consisting primarily of a pool of conforming one- to
         four-family fixed interest rate first mortgage loans formed
         and sold by IMPAC SECURED ASSETS CORP.

                  This Certificate is payable solely from the assets of the
Trust Fund, and does not represent an obligation of or interest in Impac Secured
Assets Corp., the Master Servicer, the Trustee referred to below or any of their
affiliates. Neither this Certificate nor the underlying Mortgage Loans are
guaranteed or insured by any governmental agency or instrumentality or by Impac
Secured Assets Corp., the Master Servicer, the Trustee or any of their
affiliates. None of the Company, the Master Servicer or any of their affiliates
will have any obligation with respect to any certificate or other obligation
secured by or payable from payments on the Certificates.

                  This certifies that DLJ Mortgage Capital, Inc. is the
registered owner of the Percentage Interest evidenced by this Certificate
(obtained by dividing the Initial Certificate Principal Balance of this
Certificate by the aggregate Initial Certificate Principal Balance of all Class
R Certificates, both as specified above) in certain distributions with respect
to a Trust Fund, consisting primarily of a pool of conforming one- to
four-family fixed interest rate first mortgage loans (the "Mortgage Loans"),
formed and sold by Impac Secured Assets Corp. (hereinafter called the "Company,"
which term includes any successor entity under the Agreement referred to below).
The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated
as specified



<PAGE>


                                       -4-

above (the "Agreement") among the Company, the Master Servicer and Bankers Trust
Company of California, N.A., as trustee (the "Trustee"), a summary of certain of
the pertinent provisions of which is set forth hereafter. To the extent not
defined herein, the capitalized terms used herein have the meanings assigned in
the Agreement. This Certificate is issued under and is subject to the terms,
provisions and conditions of the Agreement, to which Agreement the Holder of
this Certificate by virtue of the acceptance hereof assents and by which such
Holder is bound.

                  Pursuant to the terms of the Agreement, a distribution will be
made on the 25th day of each month or, if such 25th day is not a Business Day,
the Business Day immediately following (the "Distribution Date"), commencing as
described in the Agreement, to the Person in whose name this Certificate is
registered at the close of business on the last day (or if such last day is not
a Business Day, the Business Day immediately preceding such last day) of the
month immediately preceding the month of such distribution (the "Record Date"),
from the Available Distribution Amount in an amount equal to the product of the
Percentage Interest evidenced by this Certificate and the amount of interest and
principal, if any, required to be distributed to Holders of Class R Certificates
on such Distribution Date.

                  Each Holder of this Certificate will be deemed to have agreed
to be bound by the restrictions set forth in the Agreement to the effect that
(i) each person holding or acquiring any Ownership Interest in this Certificate
must be a United States Person and a Permitted Transferee, (ii) the transfer of
any Ownership Interest in this Certificate will be conditioned upon the delivery
to the Trustee of, among other things, an affidavit to the effect that it is a
United States Person and Permitted Transferee, (iii) any attempted or purported
transfer of any Ownership Interest in this Certificate in violation of such
restrictions will be absolutely null and void and will vest no rights in the
purported transferee, and (iv) if any person other than a United States Person
and a Permitted Transferee acquires any Ownership Interest in this Certificate
in violation of such restrictions, then the Company will have the right, in its
sole discretion and without notice to the Holder of this Certificate, to sell
this Certificate to a purchaser selected by the Company, which purchaser may be
the Company, or any affiliate of the Company, on such terms and conditions as
the Company may choose.

                  Notwithstanding the above, the final distribution on this
Certificate will be made after due notice of the pendency of such distribution
and only upon presentation and surrender of this Certificate at the office or
agency appointed by the Trustee for that purpose in the City and State of New
York. The Initial Certificate Principal Balance of this Certificate is set forth
above. The Certificate Principal Balance hereof will be reduced to the extent of
distributions allocable to principal and any Realized Losses allocable hereto.
Notwithstanding the reduction of the Certificate Principal Balance hereof to
zero, this Certificate will remain outstanding under the Agreement and the
Holder hereof may have additional obligations with respect to this Certificate,
including tax liabilities, and may be entitled to certain additional
distributions hereon, in accordance with the terms and provisions of the
Agreement.

                  Any person purchasing a Residual Certificate shall be deemed
to have represented that either: (i) such person is not a Plan subject to ERISA
or the Code (or comparable provisions



<PAGE>


                                       -5-

of any subsequent enactments) and is not acting, directly or indirectly, on
behalf of any such Plan or acquiring such Certificate with Plan Assets; or (ii)
the purchase of such Certificate is permissible under applicable law, will not
constitute or result in any non-exempt prohibited transaction under ERISA or
Section 4975 of the Code, will not subject the Company, the Trustee or the
Master Servicer to any obligation or liability (including obligations or
liabilities under ERISA or Section 4975 of the Code) in addition to those
undertaken in this Agreement and the exemptive relief granted by the DOL
pursuant to Prohibited Transaction Class Exemption 95-60 is available with
respect to the purchase, sale and holding of such Certificate.

                  This Certificate is one of a duly authorized issue of
Certificates issued in several Classes designated as Mortgage Pass-Through
Certificates of the Series specified hereon (herein collectively called the
"Certificates").

                  The Certificates are limited in right of payment to certain
collections and recoveries respecting the Mortgage Loans, all as more
specifically set forth herein and in the Agreement. In the event Master Servicer
funds are advanced with respect to any Mortgage Loan, such advance is
reimbursable to the Master Servicer, to the extent provided in the Agreement,
from related recoveries on such Mortgage Loan or from other cash that would have
been distributable to Certificateholders.

                  As provided in the Agreement, withdrawals from the Custodial
Account and/or the Certificate Account created for the benefit of
Certificateholders may be made by the Master Servicer from time to time for
purposes other than distributions to Certificateholders, such purposes including
without limitation reimbursement to the Company and the Master Servicer of
advances made, or certain expenses incurred, by either of them.

                  The Agreement permits, with certain exceptions therein
provided, the amendment of the Agreement and the modification of the rights and
obligations of the Company, the Master Servicer and the Trustee and the rights
of the Certificateholders under the Agreement at any time by the Company, the
Master Servicer and the Trustee with the consent of the Holders of Certificates
evidencing in the aggregate not less than 66% of the Percentage Interests of
each Class of Certificates affected thereby. Any such consent by the Holder of
this Certificate shall be conclusive and binding on such Holder and upon all
future holders of this Certificate and of any Certificate issued upon the
transfer hereof or in exchange herefor or in lieu hereof whether or not notation
of such consent is made upon the Certificate. The Agreement also permits the
amendment thereof in certain circumstances without the consent of the Holders of
any of the Certificates and, in certain additional circumstances, without the
consent of the Holders of certain Classes of Certificates.

                  As provided in the Agreement and subject to certain
limitations therein set forth, the transfer of this Certificate is registrable
in the Certificate Register upon surrender of this Certificate for registration
of transfer at the offices or agencies appointed by the Trustee in the City and
State of New York, duly endorsed by, or accompanied by an assignment in the form
below or other written instrument of transfer in form satisfactory to the
Trustee and the Certificate



<PAGE>


                                       -6-

Registrar duly executed by the Holder hereof or such Holder's attorney duly
authorized in writing, and thereupon one or more new Certificates of authorized
denominations evidencing the same Class and aggregate Percentage Interest will
be issued to the designated transferee or transferees.

                  The Certificates are issuable only as registered Certificates
without coupons in Classes and in denominations specified in the Agreement. As
provided in the Agreement and subject to certain limitations therein set forth,
Certificates are exchangeable for new Certificates of authorized denominations
evidencing the same Class and aggregate Percentage Interest, as
requested by the Holder surrendering the same.

                  No service charge will be made for any such registration of
transfer or exchange, but the Trustee may require payment of a sum sufficient to
cover any tax or other governmental
charge payable in connection therewith.

                  The Company, the Master Servicer, the Trustee and the
Certificate Registrar and any agent of the Company, the Master Servicer, the
Trustee or the Certificate Registrar may treat the Person in whose name this
Certificate is registered as the owner hereof for all purposes, and neither the
Company, the Master Servicer, the Trustee nor any such agent shall be affected
by notice to the contrary.

                  This Certificate shall be governed by and construed in
accordance with the laws of the State of New York.

                  The obligations created by the Agreement in respect of the
Certificates and the Trust Fund created thereby shall terminate upon the payment
to Certificateholders of all amounts held by or on behalf of the Trustee and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the maturity or other liquidation of the last Mortgage Loan subject thereto
or the disposition of all property acquired upon foreclosure or deed in lieu of
foreclosure of any Mortgage Loan and (ii) the purchase by the Master Servicer or
the Company from the Trust Fund of all remaining Mortgage Loans and all property
acquired in respect of such Mortgage Loans, thereby effecting early retirement
of the Certificates. The Agreement permits, but does not require, the Master
Servicer or the Company to (i) purchase at a price determined as provided in the
Agreement all remaining Mortgage Loans and all property acquired in respect of
any Mortgage Loan or (ii) purchase in whole, but not in part, all of the
Certificates from the Holders thereof; provided, that any such option may only
be exercised if the Pool Stated Principal Balance of the Mortgage Loans as of
the Distribution Date upon which the proceeds of any such purchase are
distributed is less than ten percent of the Cut-off Date Principal Balance of
the Mortgage Loans.

                  Reference is hereby made to the further provisions of this
Certificate set forth on the reverse hereof, which further provisions shall for
all purpose have the same effect as if set forth at this place.




<PAGE>


                                       -7-

                  Unless the certificate of authentication hereon has been
executed by the Certificate Registrar, by manual signature, this Certificate
shall not be entitled to any benefit under the Agreement or be valid for any
purpose.



<PAGE>


                                       -8-

                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed.


Dated: September 29, 1998          BANKERS TRUST COMPANY OF CALIFORNIA, N.A.,
                                        as Trustee


                                        By:_____________________________________
                                           Authorized Signatory



                          CERTIFICATE OF AUTHENTICATION
                          -----------------------------

                  This is one of the Class A-__ Certificates referred to in the
within-mentioned Agreement.

                                   BANKERS TRUST COMPANY OF CALIFORNIA, N.A.,
                                        as Certificate Registrar


                                        By:_____________________________________
                                           Authorized Signatory





<PAGE>


                                       -9-

                                   ASSIGNMENT


                  FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s)
and transfer(s) unto ___________________________________________________ (Please
print or typewrite name and address including postal zip code of assignee) a
Percentage Interest evidenced by the within Mortgage Pass-Through Certificate
and hereby authorizes the transfer of registration of such interest to assignee
on the Certificate Register of the Trust Fund.

                  I (We) further direct the Certificate Registrar to issue a new
Certificate of a like denomination and Class, to the above named assignee and
deliver such Certificate to the following address:______________________________
________________________________________________________________________________





Dated:                              ____________________________________________
                                    Signature by or on behalf of assignor



                                        ________________________________________
                                                  Signature Guaranteed

                            DISTRIBUTION INSTRUCTIONS

                  The assignee should include the following for purposes of
distribution:

                  Distributions shall be made, by wire transfer or otherwise, in
immediately available funds to _______________________________________ for the
account of __________________________ account number _________________, or, if
mailed by check, to _________________________ Applicable statements should be
mailed to _____________________________.

                  This information is provided by _____________________________,
the assignee named above, or __________________________________, as its agent.



<PAGE>


                                    EXHIBIT C

                      FORM OF TRUSTEE INITIAL CERTIFICATION



                                                  September 29, 1998


PNC Mortgage Securities Corp.
75 North Fairway Drive
Vernon Hills, IL 60061

Impac Secured Assets Corp.
20371 Irvine Avenue, Suite 200
Santa Ana Heights, California 92707

     Re:  Pooling and Servicing Agreement, dated as of September 1, 1998
          among Impac Secured Assets Corp., PNC Mortgage Securities Corp. and
          Bankers Trust Company of California, N.A., Mortgage Pass-Through
          Certificates, Series 1998-3
          -------------------------------------------------------------------

Ladies and Gentlemen:

                  In accordance with Section 2.02 of the above-captioned Pooling
and Servicing Agreement, the undersigned, as 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 the attachment hereto) it has reviewed
the Mortgage File and the Mortgage Loan Schedule and has determined that: (i)
all documents required to be included in the Mortgage File are in its
possession; (ii) such documents have been reviewed by it and appear regular on
their face and relate to such Mortgage Loan; and (iii) based on examination by
it, and only as to such documents, the information set forth in items (i), (ii),
(iii) and (iv) of the definition or description of "Mort gage Loan Schedule" is
correct.

                  The Trustee has made no independent examination of any
documents contained in each Mortgage File beyond the review specifically
required in the above-referenced Pooling and Servicing Agreement. The Trustee
makes no representation that any documents specified in clause (vi) of Section
2.01 should be included in any Mortgage File. The Trustee makes no
representations as to and shall not be responsible to verify: (i) the validity,
legality, sufficiency, enforceability, due authorization, recordability or
genuineness of any of the documents contained in each Mortgage File of any of
the Mortgage Loans identified on the Mortgage Loan Schedule, (ii) the
collectability, insurability, effectiveness or suitability of any such Mortgage
Loan, or (iii) the existence of any assumption, modification, written assurance
or substitution agreement with respect to any Mortgage File if no such documents
appear in the Mortgage File delivered to the Trustee.



<PAGE>


                                       -2-

                  Capitalized words and phrases used herein shall have the
respective meanings assigned to them in the above-captioned Pooling and
Servicing Agreement.


                              BANKERS TRUST COMPANY OF
                              CALIFORNIA, N.A.



                              By:_________________________________
                              Name:_______________________________
                              Title:______________________________




<PAGE>


                                    EXHIBIT D

                       FORM OF TRUSTEE FINAL CERTIFICATION


                                                       September 29, 1998


PNC Mortgage Securities Corp.
75 North Fairway Drive
Vernon Hills, IL 60061

Impac Secured Assets Corp.
20371 Irvine Avenue, Suite 200
Santa Ana Heights, California 92707

    Re: Pooling and Servicing Agreement, dated as of September 1, 1998
        among Impac Secured Assets Corp., PNC Mortgage Securities Corp. and
        Bankers Trust Company of California, N.A., Mortgage Pass-Through
        Certificates, Series 1998-3
        -------------------------------------------------------------------

Ladies and Gentlemen:

                  In accordance with Section 2.02 of the above-captioned Pooling
and Servicing Agreement, the undersigned, as 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 the attachment hereto) it has received
the documents set forth in Section 2.01.

                  The Trustee has made no independent examination of any
documents contained in each Mortgage File beyond the review specifically
required in the above-referenced Pooling and Servicing Agreement. The Trustee
makes no representation that any documents specified in clause (vi) of Section
2.01 should be included in any Mortgage File. The Trustee makes no
representations as to and shall not be responsible to verify: (i) the validity,
legality, sufficiency, enforceability, due authorization, recordability or
genuineness of any of the documents contained in each Mortgage File of any of
the Mortgage Loans identified on the Mortgage Loan Schedule, (ii) the
collectability, insurability, effectiveness or suitability of any such Mortgage
Loan or (iii) the existence of any assumption, modification, written assurance
or substitution agreement with respect to any Mortgage File if no such documents
appear in the Mortgage File delivered to the Trustee.

                  Capitalized words and phrases used herein shall have the
respective meanings assigned to them in the above-captioned Pooling and
Servicing Agreement.

                                             BANKERS TRUST COMPANY OF
                                             CALIFORNIA, N.A.




<PAGE>


                                       -2-

                                             By:____________________________
                                             Name:__________________________
                                             Title:_________________________



<PAGE>


                                    EXHIBIT E

                            FORM OF REMITTANCE REPORT

                             (Provided Upon Request)



<PAGE>


                                   EXHIBIT F-1

                               REQUEST FOR RELEASE
                                  (for Trustee)

LOAN INFORMATION

              Name of Mortgagor:                   _____________________________

              Master Servicer
              Loan No.:                            _____________________________

TRUSTEE

              Name:                                _____________________________

              Address:                             _____________________________

                                                   _____________________________

              Trustee
              Mortgage File No.:                   _____________________________


Request for Requesting Documents (check one):
- --------------------------------

1.            Mortgage Loan Liquidated.
                       (The Master Servicer hereby certifies that all proceeds
                       of foreclosure, insurance or other liquidation have been
                       finally received and deposited into the Custodial Account
                       to the extent required pursuant to the Pooling and
                       Servicing
                       Agreement.)

2.            Mortgage Loan in Foreclosure.

3.            Mortgage Loan Repurchased Pursuant to Section 9.01 of the Pooling
              and Servicing Agreement.

4.            Mortgage Loan Repurchased Pursuant to Article II of the Pooling
              and Servicing Agreement. (The Master Servicer hereby certifies
              that the repurchase price has been deposited into the Custodial
              Account pursuant to the Pooling and Servicing Agreement.)

5.            Other (explain).


________________________________________________________________________________

<PAGE>


                                       -2-

________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________


              The undersigned Master Servicer hereby acknowledges that it has
received from _____________________________________, as Trustee for the Holders
of Mortgage Pass- Through Certificates, Series 1998-3, the documents referred to
below (the "Documents"). All capitalized terms not otherwise defined in this
Request for Release shall have the meanings given them in the Pooling and
Servicing Agreement, dated as of September 1, 1998 (the "Pooling and Servicing
Agreement"), among Impac Secured Assets Corp., PNC Mortgage Securities Corp. and
the Trustee.

( )           Promissory Note dated _______________, 19__, in the original
              principal sum of $__________, made by _____________________,
              payable to, or endorsed to the order of, the Trustee.

( )           Mortgage recorded on _____________________ as instrument no.
              ____________________ in the County Recorder's Office of the County
              of _________________, State of __________________ in
              book/reel/docket _________________ of official records at
              page/image _____________.

( )           Deed of Trust recorded on ___________________ as instrument no.
              ________________ in the County Recorder's Office of the County of
              _________________, State of __________________ in book/reel/docket
              _________________ of official records at page/image
              ______________.

( )           Assignment of Mortgage or Deed of Trust to the Trustee, recorded
              on ___________________ as instrument no. _________ in the County
              Recorder's Office of the County of __________, State of
              _______________ in book/reel/docket ____________ of official
              records at page/image ____________.

( )           Other documents, including any amendments, assignments or other
              assumptions of the Mortgage Note or Mortgage.

              ( )      ---------------------------------------------

              ( )      ---------------------------------------------

              ( )      ---------------------------------------------

              ( )      ---------------------------------------------




<PAGE>


                                       -3-

              The undersigned Master Servicer hereby acknowledges and agrees as
follows:

                       (1) The Master Servicer shall hold and retain possession
              of the Documents in trust for the benefit of the Trustee, solely
              for the purposes provided in the
              Agreement.

                       (2) The Master Servicer shall not cause or knowingly
              permit the Documents to become subject to, or encumbered by, any
              claim, liens, security interest, charges, writs of attachment or
              other impositions nor shall the Master Servicer assert or seek to
              assert any claims or rights of setoff to or against the Documents
              or any proceeds thereof.

                       (3) The Master Servicer shall return each and every
              Document previously requested from the Mortgage File to the
              Trustee when the need therefor no longer exists, unless the
              Mortgage Loan relating to the Documents has been liquidated and
              the proceeds thereof have been remitted to the Custodial Account
              and except as expressly provided in the Agreement.

                       (4) The Documents and any proceeds thereof, including any
              proceeds of proceeds, coming into the possession or control of the
              Master Servicer shall at all times be earmarked for the account of
              the Trustee, and the Master Servicer shall keep the Documents and
              any proceeds separate and distinct from all other property in the
              Master Servicer's possession, custody or control.

                                              PNC MORTGAGE SECURITIES CORP.

                                              By:__________________________

                                              Its:_________________________



Date: _____________________, 19__



<PAGE>


                                   EXHIBIT F-2

                               REQUEST FOR RELEASE
                          [Mortgage Loans Paid in Full]

                     OFFICER'S CERTIFICATE AND TRUST RECEIPT
                       MORTGAGE PASS-THROUGH CERTIFICATES
                                  SERIES 1998-3


______________________________________ HEREBY CERTIFIES THAT HE/SHE IS AN
OFFICER OF THE MASTER SERVICER, HOLDING THE OFFICE SET FORTH BENEATH HIS/HER
SIGNATURE, AND HEREBY FURTHER CERTIFIES AS FOLLOWS:

WITH RESPECT TO THE MORTGAGE LOANS, AS THE TERM IS DEFINED IN THE POOLING AND
SERVICING AGREEMENT DESCRIBED IN THE ATTACHED SCHEDULE:

ALL PAYMENTS OF PRINCIPAL, PREMIUM (IF ANY), AND INTEREST HAVE BEEN MADE.

LOAN NUMBER:  _______________                 BORROWER'S NAME:_____________

COUNTY:_____________________

WE HEREBY CERTIFY THAT ALL AMOUNTS RECEIVED IN CONNECTION WITH SUCH PAYMENTS,
WHICH ARE REQUIRED TO BE DEPOSITED IN THE CUSTODIAL ACCOUNT PURSUANT TO SECTION
3.10 OF THE POOLING AND SERVICING AGREEMENT, HAVE BEEN OR WILL BE CREDITED.

___________       ______________________      DATED:______________

/ /      VICE PRESIDENT

/ /      ASSISTANT VICE PRESIDENT



<PAGE>


                                   EXHIBIT G-1

                     FORM OF INVESTOR REPRESENTATION LETTER


                                            _______________, 19__


Impac Secured Assets Corp.
20371 Irvine Avenue, Suite 200
Santa Ana Heights, California 92707

Bankers Trust Company of California, N.A.
3 Park Plaza, 16th Floor
Irvine, California  92614

Attention: Impac Secured Assets Corp. Series 1998-3

        Re:  Impac Secured Assets Corp.
             Mortgage Pass-Through Certificates, Series 1998-3, Class __
             -----------------------------------------------------------

Ladies and Gentlemen:

                  ______________________ (the "Purchaser") intends to purchase
from ____________________ (the "Seller") $ Initial Certificate Principal Balance
of Mortgage Pass-Through Certificates, Series 1998-3, Class (the
"Certificates"), issued pursuant to the Pooling and Servicing Agreement (the
"Pooling and Servicing Agreement"), dated as of September 1, 1998 among Impac
Secured Assets Corp. as seller (the "Company"), PNC Mortgage Securities Corp.,
as master servicer, and Bankers Trust Company, as trustee (the "Trustee"). All
terms used herein and not otherwise defined shall have the meanings set forth in
the Pooling and Servicing Agreement. The Purchaser hereby certifies, represents
and warrants to, and covenants with, the Company and the Trustee that:

                           1. The Purchaser understands that (a) the
                  Certificates have not been and will not be registered or
                  qualified under the Securities Act of 1933, as amended (the
                  "Act") or any state securities law, (b) the Company is not
                  required to so register or qualify the Certificates, (c) the
                  Certificates may be resold only if registered and qualified
                  pursuant to the provisions of the Act or any state securities
                  law, or if an exemption from such registration and
                  qualification is available, (d) the Pooling and Servicing
                  Agreement contains restrictions regarding the transfer of the
                  Certificates and (e) the Certificates will bear a legend to
                  the foregoing effect.

                           2. The Purchaser is acquiring the Certificates for
                  its own account for investment only and not with a view to or
                  for sale in connection with any distribution thereof in any
                  manner that would violate the Act or any applicable state
                  securities laws.



<PAGE>


                                       -2-

                           3. The Purchaser is (a) a substantial, sophisticated
                  institutional investor having such knowledge and experience in
                  financial and business matters, and, in particular, in such
                  matters related to securities similar to the Certificates,
                  such that it is capable of evaluating the merits and risks of
                  investment in the Certificates, (b) able to bear the economic
                  risks of such an investment and (c) an "accredited investor"
                  within the meaning of Rule 501(a) promulgated pursuant to the
                  Act.

                           4. The Purchaser has been furnished with, and has had
                  an opportunity to review (a) [a copy of the Private Placement
                  Memorandum, dated ___________________, 19__, relating to the
                  Certificates (b)] a copy of the Pooling and Servicing
                  Agreement and [b] [c] such other information concerning the
                  Certificates, the Mortgage Loans and the Company as has been
                  requested by the Purchaser from the Company or the Seller and
                  is relevant to the Purchaser's decision to purchase the
                  Certificates. The Purchaser has had any questions arising from
                  such review answered by the Company or the Seller to the
                  satisfaction of the Purchaser. [If the Purchaser did not
                  purchase the Certificates from the Seller in connection with
                  the initial distribution of the Certificates and was provided
                  with a copy of the Private Placement Memorandum (the
                  "Memorandum") relating to the original sale (the "Original
                  Sale") of the Certificates by the Company, the Purchaser
                  acknowledges that such Memorandum was provided to it by the
                  Seller, that the Memorandum was prepared by the Company solely
                  for use in connection with the Original Sale and the Company
                  did not participate in or facilitate in any way the purchase
                  of the Certificates by the Purchaser from the Seller, and the
                  Purchaser agrees that it will look solely to the Seller and
                  not to the Company with respect to any damage, liability,
                  claim or expense arising out of, resulting from or in
                  connection with (a) error or omission, or alleged error or
                  omission, contained in the Memorandum, or (b) any information,
                  development or event arising after the date of the
                  Memorandum.]

                           5. The Purchaser has not and will not nor has it
                  authorized or will it authorize any person to (a) offer,
                  pledge, sell, dispose of or otherwise transfer any
                  Certificate, any interest in any Certificate or any other
                  similar security to any person in any manner, (b) solicit any
                  offer to buy or to accept a pledge, disposition of other
                  transfer of any Certificate, any interest in any Certificate
                  or any other similar security from any person in any manner,
                  (c) otherwise approach or negotiate with respect to any
                  Certificate, any interest in any Certificate or any other
                  similar security with any person in any manner, (d) make any
                  general solicitation by means of general advertising or in any
                  other manner or (e) take any other action, that (as to any of
                  (a) through (e) above) would constitute a distribution of any
                  Certificate under the Act, that would render the disposition
                  of any Certificate a violation of Section 5 of the Act or any
                  state securities law, or that would require registration or
                  qualification pursuant thereto. The Purchaser will not sell or
                  otherwise transfer any of the Certificates, except in
                  compliance with the provisions of the Pooling and Servicing
                  Agreement.



<PAGE>


                                       -3-

                           [6.      The Purchaser

                                    (a) is not an employee benefit or other plan
                  subject to the prohibited transaction provisions 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") (a "Plan"), or any other person
                  (including an investment manager, a named fiduciary or a
                  trustee of any Plan) acting, directly or indirectly, on behalf
                  of or purchasing any Certificate with "plan assets" of any
                  Plan within the meaning of the Department of Labor ("DOL")
                  regulation at 29 C.F.R. ss.2510.3- 101; or

                                    (b) is an insurance company, the source of
                  funds to be used by it to purchase the Certificates is an
                  "insurance company general account" (within the meaning of DOL
                  Prohibited Transaction Class Exemption ("PTCE") 95-60), and
                  the purchase is being made in reliance upon the availability
                  of the exemptive relief afforded under Sections I and III of
                  PTCE 95-60; or

                                    (c) has provided the Trustee, the Company
                  and the Master Servicer with an opinion of counsel acceptable
                  to and in form and substance satisfactory to the Trustee, the
                  Company and the Master Servicer to the effect that the
                  purchase of Certificates is permissible under applicable law,
                  will not constitute or result in any non-exempt prohibited
                  transaction under ERISA or Section 4975 of the Code and will
                  not subject the Trustee, the Company or the Master Servicer to
                  any obligation or liability (including obligations or
                  liabilities under ERISA or Section 4975 of the Code) in
                  addition to those undertaken in the Pooling and Servicing
                  Agreement.

                  In addition, the Purchaser hereby certifies, represents and
warrants to, and covenants with, the Company, the Trustee and the Master
Servicer that the Purchaser will not transfer such Certificates to any Plan or
person unless either such Plan or person meets the requirements set forth in
either (a), (b) or (c) above.

                                       Very truly yours,


                                       ____________________________________

                                       By:_________________________________
                                       Name:_______________________________
                                       Title:______________________________



<PAGE>


                                   EXHIBIT G-2

                    FORM OF TRANSFEROR REPRESENTATION LETTER




                                                    _______________, 19__

Impac Secured Assets Corp.
20371 Irvine Avenue, Suite 200
Santa Ana Heights, California 92707

Bankers Trust Company of California, N.A.
3 Park Plaza, 16th Floor
Irvine, California  92614

Attention: Impac Secured Assets Corp. Series 1998-3

         Re:  Impac Secured Assets Corp.
              Mortgage Pass-Through Certificates, Series 1998-3, Class __
              -----------------------------------------------------------

Ladies and Gentlemen:

                  In connection with the sale by __________________ (the
"Seller") to _____________________ (the "Purchaser") of $ Initial Certificate
Principal Balance of Mortgage Pass-Through Certificates, Series 1998-3, Class
(the "Certificates"), issued pursuant to the Pooling and Servicing Agreement
(the "Pooling and Servicing Agreement"), dated as of September 1, 1998 among
Impac Secured Assets Corp., as seller (the "Company"), PNC Mortgage Securities
Corp., as master servicer, and Bankers Trust Company of California, N.A., as
trustee (the "Trustee"). The Seller hereby certifies, represents and warrants
to, and covenants with, the Company and the Trustee that:

                  Neither the Seller nor anyone acting on its behalf has (a)
offered, pledged, sold, disposed of or otherwise transferred any Certificate,
any interest in any Certificate or any other similar security to any person in
any manner, (b) has solicited any offer to buy or to accept a pledge,
disposition or other transfer of any Certificate, any interest in any
Certificate or any other similar security from any person in any manner, (c) has
otherwise approached or negotiated with respect to any Certificate, any interest
in any Certificate or any other similar security with any person in any manner,
(d) has made any general solicitation by means of general advertising or in any
other manner, or (e) has taken any other action, that (as to any of (a) through
(e) above) would constitute a distribution of the Certificates under the
Securities Act of 1933 (the "Act"), that would render the disposition of any
Certificate a violation of Section 5 of the Act or any state securities law, or
that would require registration or qualification pursuant thereto. The Seller
will not act in any manner set forth in the foregoing sentence with



<PAGE>


                                       -2-

respect to any Certificate. The Seller has not and will not sell or otherwise
transfer any of the Certificates, except in compliance with the provisions of
the Pooling and Servicing Agreement.

                                  Very truly yours,


                                  ________________________________________
                                  (Seller)



                                  By:_____________________________________
                                  Name:___________________________________
                                  Title:__________________________________




<PAGE>


                                   EXHIBIT G-3

                   FORM OF RULE 144A INVESTMENT REPRESENTATION


             Description of Rule 144A Securities, including numbers:

                           Impac Secured Assets Corp.
                       Mortgage Pass-Through Certificates
                        Series 1998-3, Class ___, No. ___


                  The undersigned seller, as registered holder (the
"Transferor"), intends to transfer the Rule 144A Securities described above to
the undersigned buyer (the "Buyer").

                  1. In connection with such transfer and in accordance with the
agreements pursuant to which the Rule 144A Securities were issued, the
Transferor hereby certifies the following facts: Neither the Transferor nor
anyone acting on its behalf has offered, transferred, pledged, sold or otherwise
disposed of the Rule 144A Securities, any interest in the Rule 144A Securities
or any other similar security to, or solicited any offer to buy or accept a
transfer, pledge or other disposition of the Rule 144A Securities, or otherwise
approached or negotiated with respect to the Rule 144A Securities, any interest
in the Rule 144A Securities or any other similar security with, any person in
any manner, or made any general solicitation by means of general advertising or
in any other manner, or taken any other action, which would constitute a
distribution of the Rule 144A Securities under the Securities Act of 1933, as
amended (the "1933 Act"), or which would render the disposition of the Rule 144A
Securities a violation of Section 5 of the 1933 Act or require registration
pursuant thereto, and that the Transferor has not offered the Rule 144A
Securities to any person other than the Buyer or another "qualified
institutional buyer" as defined in Rule 144A under the 1933 Act.

                  2. The Buyer warrants and represents to, and covenants with,
the Transferor, the Trustee and the Master Servicer pursuant to Section 5.02 of
the Pooling and Servicing Agreement
as follows:

                           a. The Buyer understands that the Rule 144A
         Securities have not been registered under the 1933 Act or the
         securities laws of any state.

                           b. The Buyer considers itself a substantial,
         sophisticated institutional investor having such knowledge and
         experience in financial and business matters that it is capable of
         evaluating the merits and risks of investment in the Rule 144A
         Securities.

                           c. The Buyer has been furnished with all information
         regarding the Rule 144A Securities that it has requested from the
         Transferor, the Trustee or the Master Servicer.




<PAGE>


                                       -2-

                           d. Neither the Buyer nor anyone acting on its behalf
         has offered, transferred, pledged, sold or otherwise disposed of the
         Rule 144A Securities, any interest in the Rule 144A Securities or any
         other similar security to, or solicited any offer to buy or accept a
         transfer, pledge or other disposition of the Rule 144A Securities, any
         interest in the Rule 144A Securities or any other similar security
         from, or otherwise approached or negotiated with respect to the Rule
         144A Securities, any interest in the Rule 144A Securities or any other
         similar security with, any person in any manner, or made any general
         solicitation by means of general advertising or in any other manner, or
         taken any other action, that would constitute a distribution of the
         Rule 144A Securities under the 1933 Act or that would render the
         disposition of the Rule 144A Securities a violation of Section 5 of the
         1933 Act or require registration pursuant thereto, nor will it act, nor
         has it authorized or will it authorize any person to act, in such
         manner with respect to the Rule 144A Securities.

                           e. The Buyer is a "qualified institutional buyer" as
         that term is defined in Rule 144A under the 1933 Act and has completed
         either of the forms of certification to that effect attached hereto as
         Annex 1 or Annex 2. The Buyer is aware that the sale to it is being
         made in reliance on Rule 144A. The Buyer is acquiring the Rule 144A
         Securities for its own account or the account of other qualified
         institutional buyers, understands that such Rule 144A Securities may be
         resold, pledged or transferred only (i) to a person reasonably believed
         to be a qualified institutional buyer that purchases for its own
         account or for the account of a qualified institutional buyer to whom
         notice is given that the resale, pledge or transfer is being made in
         reliance on Rule 144A, or (ii) pursuant to another exemption from
         registration under the 1933 Act.

                  3. The Buyer warrants and represents to, and covenants with,
the Transferor, the Servicer and the Depositor that either (1) the Buyer is not
an employee benefit plan within the meaning of Section 3(3) of the Employee
Retirement Income Security Act of 1974, as amended ("ERISA") ("Plan"), or a plan
within the meaning of Section 4975(e)(1) of the Internal Revenue Code of 1986
(the "Code") (also a "Plan"), and the Buyer is not directly or indirectly
purchasing the Rule 144A Securities on behalf of, as investment manager of, as
named fiduciary of, as trustee of, or with assets of a Plan, or (2) the Buyer's
purchase of the Rule 144A Securities will not result in a prohibited transaction
under Section 406 of ERISA or Section 4975 of the Code.

                  4. This document may be executed in one or more counterparts
and by the different parties hereto on separate counterparts, each of which,
when so executed, shall be deemed to be an original; such counterparts,
together, shall constitute one and the same document.



<PAGE>


                                       -3-


                  IN WITNESS WHEREOF, each of the parties has executed this
document as of the date set forth below.


______________________________________       ___________________________________
         Print Name of Transferor                  Print Name of Buyer

By:____________________________              By:________________________________
   Name:                                        Name:
   Title:                                       Title:

Taxpayer Identification:                     Taxpayer Identification:

No._____________________________             No.________________________________

Date:___________________________             Date:______________________________



<PAGE>


                                                          ANNEX 1 TO EXHIBIT G-3
                                                          ----------------------


            QUALIFIED INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A
            --------------------------------------------------------

             [For Buyers Other Than Registered Investment Companies]

             The undersigned hereby certifies as follows in connection with the
Rule 144A Investment Representation to which this Certification is attached:

             1. As indicated below, the undersigned is the President, Chief
Financial Officer, Senior Vice President or other executive officer of the
Buyer.

             2. In connection with purchases by the Buyer, the Buyer is a
"qualified institutional buyer" as that term is defined in Rule 144A under the
Securities Act of 1933 ("Rule 144A") because (i) the Buyer owned and/or invested
on a discretionary basis $______________________1 in securities (except for the
excluded securities referred to below) as of the end of the Buyer's most recent
fiscal year (such amount being calculated in accordance with Rule 144A) and (ii)
the Buyer satisfies the criteria in the category marked below.

     ___     CORPORATION, ETC. The Buyer is a corporation (other than a bank,
             savings and loan association or similar institution), Massachusetts
             or similar business trust, partnership, or charitable organization
             described in Section 501(c)(3) of the Internal Revenue Code.

     ___     BANK. The Buyer (a) is a national bank or banking institution
             organized under the laws of any State, territory or the District of
             Columbia, the business of which is substantially confined to
             banking and is supervised by the State or territorial banking
             commission or similar official or is a foreign bank or equivalent
             institution, and (b) has an audited net worth of at least
             $25,000,000 as demonstrated in its latest annual financial
             statement, a copy of which is attached hereto.

     ___     SAVINGS AND LOAN. The Buyer (a) is a savings and loan association,
             building and loan association, cooperative bank, homestead
             association or similar institution, which is supervised and
             examined by a State or Federal authority having supervision over
             any such institutions or is a foreign savings and loan association
             or equivalent institution and (b) has an audited net worth of at
             least $25,000,000 as demonstrated in its latest annual financial
             statements.

     ___     BROKER-DEALER. The Buyer is a dealer registered pursuant to Section
             15 of the Securities Exchange Act of 1934.

- --------

1 Buyer must own and/or invest on a discretionary basis at least $100,000,000 in
securities unless Buyer is a dealer, and, in that case, Buyer must own and/or
invest on a discretionary basis at least $10,000,000 in securities.




<PAGE>


                                       -2-

     ___     INSURANCE COMPANY. The Buyer is an insurance company whose primary
             and predominant business activity is the writing of insurance or
             the reinsuring of risks underwritten by insurance companies and
             which is subject to supervision by the insurance commissioner or a
             similar official or agency of a State, territory or the District of
             Columbia.

     ___     STATE OR LOCAL PLAN. The Buyer is a plan established and maintained
             by a State, its political subdivisions, or any agency or
             instrumentality of the State or its political subdivisions, for the
             benefit of its employees.

     ___     ERISA PLAN. The Buyer is an employee benefit plan within the
             meaning of Title I of the Employee Retirement Income Security Act
             of 1974.

     ___     INVESTMENT ADVISER. The Buyer is an investment adviser registered
             under the Investment Advisers Act of 1940.

     ___     SBIC. The Buyer is a Small Business Investment Company licensed by
             the U.S. Small Business Administration under Section 301(c) or (d)
             of the Small Business Investment Act of 1958.

     ___     BUSINESS DEVELOPMENT COMPANY. The Buyer is a business development
             company as defined in Section 202(a)(22) of the Investment Advisers
             Act of 1940.

     ___     TRUST FUND. The Buyer is a trust fund whose trustee is a bank or
             trust company and whose participants are exclusively (a) plans
             established and maintained by a State, its political subdivisions,
             or any agency or instrumentality of the State or its political
             subdivisions, for the benefit of its employees, or (b) employee
             benefit plans within the meaning of Title I of the Employee
             Retirement Income Security Act of 1974, but is not a trust fund
             that includes as participants individual retirement accounts or
             H.R. 10 plans.

             3. The term "SECURITIES" as used herein DOES NOT INCLUDE (i)
securities of issuers that are affiliated with the Buyer, (ii) securities that
are part of an unsold allotment to or subscription by the Buyer, if the Buyer is
a dealer, (iii) bank deposit notes and certificates of deposit, (iv) loan
participations, (v) repurchase agreements, (vi) securities owned but subject to
a repurchase agreement and (vii) currency, interest rate and commodity swaps.

             4. For purposes of determining the aggregate amount of securities
owned and/or invested on a discretionary basis by the Buyer, the Buyer used the
cost of such securities to the Buyer and did not include any of the securities
referred to in the preceding paragraph. Further, in determining such aggregate
amount, the Buyer may have included securities owned by subsidiaries of the
Buyer, but only if such subsidiaries are consolidated with the Buyer in its
financial statements prepared in accordance with generally accepted accounting
principles and if the investments of such subsidiaries are managed under the
Buyer's direction. However, such



<PAGE>


                                       -3-

securities were not included if the Buyer is a majority-owned, consolidated
subsidiary of another enterprise and the Buyer is not itself a reporting company
under the Securities Exchange Act of 1934.

             5. The Buyer acknowledges that it is familiar with Rule 144A and
understands that the seller to it and other parties related to the Certificates
are relying and will continue to rely on the statements made herein because one
or more sales to the Buyer may be in reliance on Rule 144A.

  ___     ___     Will the Buyer be purchasing the Rule 144A
  Yes     No      Securities only for the Buyer's own account?

             6. If the answer to the foregoing question is "no", the Buyer
agrees that, in connection with any purchase of securities sold to the Buyer for
the account of a third party (including any separate account) in reliance on
Rule 144A, the Buyer will only purchase for the account of a third party that at
the time is a "qualified institutional buyer" within the meaning of Rule 144A.
In addition, the Buyer agrees that the Buyer will not purchase securities for a
third party unless the Buyer has obtained a current representation letter from
such third party or taken other appropriate steps contemplated by Rule 144A to
conclude that such third party independently meets the definition of "qualified
institutional buyer" set forth in Rule 144A.

             7. The Buyer will notify each of the parties to which this
certification is made of any changes in the information and conclusions herein.
Until such notice is given, the Buyer's purchase of Rule 144A Securities will
constitute a reaffirmation of this certification as of the date of such
purchase.


                                        _______________________________________
                                        Print Name of Buyer


                                        By:  __________________________________
                                             Name:
                                             Title:

                                        Date:__________________________________



<PAGE>


                                                          ANNEX 2 TO EXHIBIT G-3
                                                          ----------------------


            QUALIFIED INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A
            --------------------------------------------------------

              [For Buyers That Are Registered Investment Companies]


             The undersigned hereby certifies as follows in connection with the
Rule 144A Investment Representation to which this Certification is attached:

              1. As indicated below, the undersigned is the President, Chief
Financial Officer or Senior Vice President of the Buyer or, if the Buyer is a
"qualified institutional buyer" as that term is defined in Rule 144A under the
Securities Act of 1933 ("Rule 144A") because Buyer is part of a Family of
Investment Companies (as defined below), is such an officer of the Adviser.

             2. In connection with purchases by Buyer, the Buyer is a "qualified
institutional buyer" as defined in SEC Rule 144A because (i) the Buyer is an
investment company registered under the Investment Company Act of 1940, and (ii)
as marked below, the Buyer alone, or the Buyer's Family of Investment Companies,
owned at least $100,000,000 in securities (other than the excluded securities
referred to below) as of the end of the Buyer's most recent fiscal year. For
purposes of determining the amount of securities owned by the Buyer or the
Buyer's Family of Investment Companies, the cost of such securities was used.

____              The Buyer owned $___________________ in securities (other than
                  the excluded securities referred to below) as of the end of
                  the Buyer's most recent fiscal year (such amount being
                  calculated in accordance with Rule 144A).

____              The Buyer is part of a Family of Investment Companies which
                  owned in the aggregate $______________ in securities (other
                  than the excluded securities referred to below) as of the end
                  of the Buyer's most recent fiscal year (such amount being
                  calculated in accordance with Rule 144A).

             3. The term "FAMILY OF INVESTMENT COMPANIES" as used herein means
two or more registered investment companies (or series thereof) that have the
same investment adviser or investment advisers that are affiliated (by virtue of
being majority owned subsidiaries of the same parent or because one investment
adviser is a majority owned subsidiary of the other).

             4. The term "SECURITIES" as used herein does not include (i)
securities of issuers that are affiliated with the Buyer or are part of the
Buyer's Family of Investment Companies, (ii) bank deposit notes and certificates
of deposit, (iii) loan participations, (iv) repurchase agreements, (v)
securities owned but subject to a repurchase agreement and (vi) currency,
interest rate and commodity swaps.

             5. The Buyer is familiar with Rule 144A and understands that each
of the parties to which this certification is made are relying and will continue
to rely on the statements made herein



<PAGE>


                                       -2-

because one or more sales to the Buyer will be in reliance on Rule 144A. In
addition, the Buyer will only purchase for the Buyer's own account.

             6. The undersigned will notify each of the parties to which this
certification is made of any changes in the information and conclusions herein.
Until such notice, the Buyer's purchase of Rule 144A Securities will constitute
a reaffirmation of this certification by the undersigned as of the date of such
purchase.


                                            ____________________________________
                                            Print Name of Buyer


                                            By:_________________________________
                                            Name:
                                            Title:

                                            IF AN ADVISER:


                                            ____________________________________
                                            Print Name of Buyer


                                            Date:_______________________________





<PAGE>


                                   EXHIBIT G-4

                         FORM OF TRANSFEROR CERTIFICATE

                                        ___________________, 19__

Impac Secured Assets Corp.
20371 Irvine Avenue, Suite 200
Santa Ana Heights, California 92707

Bankers Trust Company of California, N.A.
3 Park Plaza, 16th Floor
Irvine, California  92614

Attention: Impac Secured Assets Corp. Series 1998-3

             Re:  Impac Secured Assets Corp.
                  Mortgage Pass-Through Certificates
                  Series 1998-3, Class __

Ladies and Gentlemen:

             This letter is delivered to you in connection with the sale by
___________________________ (the "Seller") to _____________________________ (the
"Purchaser") of a ___% Percentage Interest in the Mortgage Pass-Through
Certificates, Series 1998-3, Class R (the "Certificates"), issued pursuant to
Section 5.02 of the Pooling and Servicing Agreement (the "Pooling and Servicing
Agreement"), dated as of September 1, 1998, among Impac Secured Assets Corp., as
seller (the "Company"), PNC Mortgage Corp., as master servicer, and Bankers
Trust Company of California, N.A., as trustee (the "Trustee"). All terms used
herein and not otherwise defined shall have the meaning set forth in the Pooling
and Servicing Agreement. The Seller hereby certifies, represents and warrants
to, and covenants with, the Company and the Trustee that:

             1. No purpose of the Seller relating to the sale of the
Certificates by the Seller to the Purchaser is or will be to impede the
assessment or collection of any tax.

             2. The Seller understands that the Purchaser has delivered to the
Trustee and the Master Servicer a transfer affidavit and agreement in the form
attached to the Pooling and Servicing Agreement as Exhibit G-3. The Seller does
not know or believe that any representation contained therein is false.

             3. The Seller has at the time of the transfer conducted a
reasonable investigation of the financial condition of the Purchaser as
contemplated by Treasury Regulations Section 1.860E- 1(c)(4)(i) and, as a result
of that investigation, the Seller has determined that the Purchaser has
historically paid its debts as they have become due and has found no significant
evidence to indicate that the Purchaser will not continue to pay its debts as
they become due in the future. The



<PAGE>


                                       -2-

Seller understands that the transfer of the Certificates may not be respected
for United States income tax purposes (and the Seller may continue to be liable
for United States income taxes associated therewith) unless the Seller has
conducted such an investigation.

             4. The Seller has no actual knowledge that the proposed Transferee
is a Disqualified Organization, an agent of a Disqualified Organization or a
Non-United States Person.

                                            Very truly yours,


                                            ____________________________________
                                            (Seller)

                                            By:_________________________________
                                            Name:_______________________________
                                            Title:______________________________



<PAGE>


                                   EXHIBIT G-5

                    FORM OF TRANSFER AFFIDAVIT AND AGREEMENT



STATE OF          )
                  : ss.:
COUNTY OF         )


             ___________________, being first duly sworn, deposes, represents
and warrants:

             1. That he/she is [Title of Officer] of [Name of Owner], a [savings
institution] [corporation] duly organized and existing under the laws of [the
State of ___________] [the United States], (the "Owner"), (record or beneficial
owner of the Class R Certificates on behalf of which he/she makes this affidavit
and agreement). This Class R Certificate was issued pursuant to the Pooling and
Servicing Agreement (the "Pooling and Servicing Agreement") dated as of
September 1, 1998 among Impac Secured Assets Corp., as depositor, PNC Mortgage
Securities Corp., as master servicer (the "Master Servicer"), and Bankers Trust
Company of California, N.A., as trustee (the "Trustee").

             2. That the Owner (i) is not and will not be a "disqualified
organization" as of _______________[date of transfer] within the meaning of
Section 860E(e)(5) of the Internal Revenue Code of 1986, as amended (the
"Code"), (ii) will endeavor to remain other than a disqualified organization for
so long as it retains its ownership interest in the Class R Certificates, and
(iii) is acquiring the Class R Certificates for its own account or for the
account of another Owner from which it has received an affidavit and agreement
in substantially the same form as this affidavit and agreement. (For this
purpose, a "disqualified organization" means the United States, any state or
political subdivision thereof, any agency or instrumentality of any of the
foregoing (other than an instrumentality all of the activities of which are
subject to tax and, except for the Federal Home Loan Mortgage Corporation, a
majority of whose board of directors is not selected by any such governmental
entity) or any foreign government, international organization or any agency or
instrumentality of such foreign government or organization, any rural electric
or telephone cooperative, or any organization (other than certain farmers'
cooperatives) that is generally exempt from federal income tax unless such
organization is subject to the tax on unrelated business taxable income).

             3. That the Owner is aware (i) of the tax that would be imposed on
transfers of Class R Certificates to disqualified organizations under the Code,
that applies to all transfers of Class R Certificates after March 31, 1988; (ii)
that such tax would be on the transferor, or, if such transfer is through an
agent (which person includes a broker, nominee or middleman) for a disqualified
organization, on the agent; (iii) that the person otherwise liable for the tax
shall be relieved of liability for the tax if the transferee furnishes to such
person an affidavit that the transferee is not a disqualified organization and,
at the time of transfer, such person does not have actual knowledge that the
affidavit is false; and (iv) that the Class R Certificates may be



<PAGE>


                                       -2-

"noneconomic residual interests" within the meaning of Treasury regulations
promulgated pursuant to the Code and that the transferor of a noneconomic
residual interest will remain liable for any taxes due with respect to the
income on such residual interest, unless no significant purpose of the transfer
was to impede the assessment or collection of tax.

             4. That the Owner is aware of the tax imposed on a "pass-through
entity" holding Class R Certificates if at any time during the taxable year of
the pass-through entity a disqualified organization is the record holder of an
interest in such entity. (For this purpose, a "pass through entity" includes a
regulated investment company, a real estate investment trust or common trust
fund, a partnership, trust or estate, and certain cooperatives.)

             5. That the Owner is aware that the Trustee will not register the
transfer of any Class R Certificates unless the transferee, or the transferee's
agent, delivers to it an affidavit and agreement, among other things, in
substantially the same form as this affidavit and agreement. The Owner expressly
agrees that it will not consummate any such transfer if it knows or believes
that any of the representations contained in such affidavit and agreement are
false.

             6. That the Owner has reviewed the restrictions set forth on the
face of the Class R Certificates and the provisions of Section 5.02(f) of the
Pooling and Servicing Agreement under which the Class R Certificates were issued
(in particular, clause (iii)(A) and (iii)(B) of Section 5.02(f) which authorize
the Trustee to deliver payments to a person other than the Owner and negotiate a
mandatory sale by the Trustee in the event the Owner holds such Certificates in
violation of Section 5.02(f)). The Owner expressly agrees to be bound by and to
comply with such restrictions and provisions.

             7. That the Owner consents to any additional restrictions or
arrangements that shall be deemed necessary upon advice of counsel to constitute
a reasonable arrangement to ensure that the Class R Certificates will only be
owned, directly or indirectly, by an Owner that is not a disqualified
organization.

             8. The Owner's Taxpayer Identification Number is ______________.

             9. This affidavit and agreement relates only to the Class R
Certificates held by the Owner and not to any other holder of the Class R
Certificates. The Owner understands that the liabilities described herein relate
only to the Class R Certificates.

             10. That no purpose of the Owner relating to the transfer of any of
the Class R Certificates by the Owner is or will be to impede the assessment or
collection of any tax.

             11. That the Owner has no present knowledge or expectation that it
will be unable to pay any United States taxes owed by it so long as any of the
Certificates remain outstanding. In this regard, the Owner hereby represents to
and for the benefit of the person from whom it acquired the Class R Certificate
that the Owner intends to pay taxes associated with holding such



<PAGE>


                                       -3-

Class R Certificate as they become due, fully understanding that it may incur
tax liabilities in excess of any cash flows generated by the Class R
Certificate.

             12. That the Owner has no present knowledge or expectation that it
will become insolvent or subject to a bankruptcy proceeding for so long as any
of the Class R Certificates remain outstanding.

             13. The Owner is 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 political subdivision thereof, or an estate or
trust whose income from sources without the United States is includible in gross
income for United States federal income tax purposes regardless of its
connection with the conduct of a trade or business within the United States.

             14. (a) The Certificates (i) are not being acquired by, and will
not be transferred to, any employee benefit plan within the meaning of section
3(3) of the Employee Retirement Income Security Act of 1974, as amended
("ERISA") or other retirement arrangement, including individual retirement
accounts and annuities, Keogh plans and bank collective investment funds and
insurance company general or separate accounts in which such plans, accounts or
arrangements are invested, that is subject to Section 406 of ERISA or Section
4975 of the Internal Revenue Code of 1986 (the "Code") (any of the foregoing, a
"Plan"), (ii) are not being acquired with "plan assets" of a Plan within the
meaning of the Department of Labor ("DOL") regulation, 29 C.F.R. ss. 2510.3-101
or otherwise under ERISA, and (iii) will not be transferred to any entity that
is deemed to be investing in plan assets within the meaning of the DOL
regulation, 29 C.F.R. ss. 2510.3-101 or otherwise under ERISA; or

             (b) The purchase of Certificates is permissible under applicable
law, will not constitute or result in any prohibited transaction under ERISA or
Section 4975 of the Code, will not subject the Company, the Trustee or the
Master Servicer to any obligation in addition to those undertaken in the Pooling
and Servicing Agreement and, with respect to each source of funds ("Source")
being used by the Purchaser to acquire the Certificates, each of the following
statements are accurate: (a) the Purchaser is an insurance company; (b) the
Source is assets of the Purchaser's "general account;" (c) the conditions set
forth in Sections I and III of Prohibited Transaction Class Exemption ("PTCE")
95-60 issued by the DOL have been satisfied and the purchase, holding and
transfer of Certificates by or on behalf of the Purchaser are exempt under PTCE
95-60; and (d) the amount of reserves and liabilities for such general account
contracts held by or on behalf of any Plan do not exceed 10% of the total
reserves and liabilities of such general account plus surplus as of the date
hereof (for purposes of this clause, all Plans maintained by the same employer
(or affiliate thereof) or employee organization are deemed to be a single Plan)
in connection with its purchase and holding of such Certificates; or

             (c) The Owner will provide the Trustee, the Company and the Master
Servicer with an opinion of counsel acceptable to and in form and substance
satisfactory to the Trustee, the Company and the Master Servicer to the effect
that the purchase of Certificates is permissible under applicable law, will not
constitute or result in any non-exempt prohibited transaction under



<PAGE>


                                       -4-

ERISA or Section 4975 of the Code and will not subject the Trustee, the Company
or the Master Servicer to any obligation or liability (including obligations or
liabilities under ERISA or Section 4975 of the Code) in addition to those
undertaken in the Pooling and Servicing Agreement.

     In addition, the Owner hereby certifies, represents and warrants to, and
covenants with, the Company, the Trustee and the Master Servicer that the Owner
will not transfer such Certificates to any Plan or person unless either such
Plan or person meets the requirements set forth in either (a), (b) or (c) above.

     Capitalized terms used but not defined herein shall have the meanings
assigned in the Pooling and Servicing Agreement.




<PAGE>


     IN WITNESS WHEREOF, the Owner has caused this instrument to be executed on
its behalf, by its [Title of Officer] and its corporate seal to be hereunto
attached, attested by its [Assistant] Secretary, this ____ day of ____________,
____.


                                                     [NAME OF OWNER]


                                            By:_________________________________
                                                     [Name of Officer]
                                                     [Title of Officer]

[Corporate Seal]

ATTEST:


___________________________
[Assistant] Secretary

             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 Owner, and acknowledged to me
that such person executed the same as such person's free act and deed and the
free act and deed of the Owner.

             Subscribed and sworn before me this ___ day of _____________, 19__.



                                            __________________________________
                                                      NOTARY PUBLIC

                                            COUNTY OF_________________________
                                            STATE OF__________________________
                                            My Commission expires the ____ day
                                            of _______, 19__.





<PAGE>


                                   EXHIBIT G-6

         FORM OF INVESTOR REPRESENTATION LETTER FOR INSURANCE COMPANIES


                                                  ________, 199__

Impac Secured Assets Corp.
20371 Irvine Avenue, Suite 200
Santa Ana Heights, California 92707

Bankers Trust Company of California, N.A.
3 Park Plaza, 16th Floor
Irvine, California  92614

Attention: Impac Secured Assets Corp. Series 1998-3

             Re: Impac Secured Assets Corp.
                 Mortgage Pass-Through Certificates, Series 1998-3, Class __
                 -----------------------------------------------------------

Ladies and Gentlemen:

             _______________ (the "Purchaser") intends to purchase from
__________ (the "Seller") $____________ Initial Certificate Principal Balance of
Mortgage Pass-Through Certificates, Series 1998-3, Class __ (the "Certificate"),
issued pursuant to the Pooling and Servicing Agreement (the "Pooling and
Servicing Agreement"), dated as of September 1, 1998, among Impac Secured Assets
Corp., as seller (the "Company"), PNC Mortgage Securities Corp., as master
servicer, and Bankers Trust Company of California, N.A., as trustee (the
"Trustee"). All terms used herein and not otherwise defined shall have the
meanings set forth in the Pooling and Servicing Agreement. The Purchaser hereby
certifies, represents and warrants to, and covenants with, the Company and the
Trustee that:

                  1. The Certificates purchased pursuant hereto will not be
             transferred to any employee benefit plan or other retirement
             arrangement including individual retirement accounts and Keogh
             plans that is subject to Section 406 of the Employee Retirement
             Income Security Act of 1974, as amended ("ERISA") or Section 4975
             of the Internal Revenue Code of 1986 (the "Code") (any of the
             foregoing, a "Plan").





<PAGE>


                  2. The Purchaser is an insurance company and the source of
             funds used to purchase the Certificates is an "insurance company
             general account" (as such term is defined in Prohibited Transaction
             Class Exemption 95-60 issued by the U.S. Department of Labor ("PTCE
             95-60") and there is no plan with respect to which the amount of
             such general account's reserves and liabilities for the contract(s)
             held by or on behalf of such Plan and all other plans maintained by
             the same employer (or affiliate thereof as defined in PTCE 95-60)
             or by the same employee organization, exceed 10% of the total of
             all reserves and liabilities of such general account (as such
             amounts are determined under PTCE 95-60) as of the date of
             acquisition of such Certificates.



                                            Very truly yours,

                                            ____________________________________
                                            (Purchaser)

                                            By:_________________________________
                                            Name:_______________________________
                                            Title:______________________________



<PAGE>


                                    EXHIBIT H

                             MORTGAGE LOAN SCHEDULE

                             (Provided Upon Request)



<PAGE>


                                    EXHIBIT I

                      SELLER REPRESENTATIONS AND WARRANTIES

Seller's Representations Assigned by Depositor to Trustee

             Representations and Warranties. Pursuant to the Mortgage Loan
Purchase Agreement, the Seller has made certain representations and warranties
to the Depositor. The Seller shall confirm such representations and warranties
and shall deliver a Seller's Warranty Certificate and an Officers' Certificate
on the Closing Date (i) reaffirming such representations and warranties and (ii)
specifically restating and reaffirming the following representations and
warranties as of such date. The following representations are, pursuant to the
Pooling and Servicing Agreement, assigned by the Depositor to the Trustee for
the benefit of the Certificateholders, together with the related repurchase
rights specified in the Mortgage Loan Purchase Agreement. Pursuant to the
Mortgage Loan Purchase Agreement, the Seller's Warranty Certificate and related
Officer's Certificate, the Seller affirms each such representation and warranty
and agrees, consents to and acknowledges the assignment thereof to the Trustee.
All capitalized terms herein shall have the meanings assigned in the Pooling and
Servicing Agreement and the Seller's Warranty Certificate, as applicable.

             The Seller hereby represents and warrants to the Depositor and
Trustee, as to each Mortgage Loan, that as of the Closing Date or as of such
other date specifically provided herein:

     (a)     the information set forth in the Mortgage Loan Schedule hereto is
             true and correct in all material respects;

     (b)     the terms of the Mortgage Note and the Mortgage have not been
             impaired, waived, altered or modified in any respect, except by
             written instruments, (i) if required by law in the jurisdiction
             where the Mortgaged Property is located, or (ii) to protect the
             interests of the Trustee on behalf of the Certificateholders;

     (c)     except as otherwise set forth in the Mortgage Loan Schedule, the
             Mortgage File for each Mortgage Loan contains a true and complete
             copy of each of the documents contained in such Mortgage File,
             including all amendments, modifications and, if applicable, waivers
             and assumptions that have been executed in connection with such
             Mortgage Loan;

     (d)     immediately prior to the transfer to the Purchaser, the Seller was
             the sole owner of beneficial title and holder of each Mortgage and
             Mortgage Note relating to the Mortgage Loans and is conveying the
             same free and clear of any and all liens, claims, encumbrances,
             participation interests, equities, pledges, charges or security
             interests of any nature and the Seller has full right and authority
             to sell or assign the same pursuant to this Agreement;

     (e)     each Mortgage is a valid and enforceable first lien on the property
             securing the related Mortgage Note and each Mortgaged Property is
             owned by the Mortgagor in fee simple



<PAGE>


                                       -2-

             (except with respect to common areas in the case of condominiums,
             PUDs and DE MINIMIS PUDs) or by leasehold for a term longer than
             the term of the related Mortgage, subject only to (i) the lien of
             current real property taxes and assessments, (ii) covenants,
             conditions and restrictions, rights of way, easements and other
             matters of public record as of the date of recording of such
             Mortgage, such exceptions being acceptable to mortgage lending
             institutions generally or specifically reflected in the appraisal
             obtained in connection with the origination of the related Mortgage
             Loan or referred to in the lender's title insurance policy
             delivered to the originator of the related Mortgage Loan and (iii)
             other matters to which like properties are commonly subject which
             do not materially interfere with the benefits of the security
             intended to be provided by such Mortgage;

     (f)     no payment of principal of or interest on or in respect of any
             Mortgage Loan is 30 or more days past due;

     (g)     there is no mechanics' lien or claim for work, labor or material
             affecting the premises subject to any Mortgage which is or may be a
             lien prior to, or equal with, the lien of such Mortgage except
             those which are insured against by the title insurance policy
             referred to in (l) below;

     (h)     as of the Cut-Off Date, (i) no Mortgage Loan had been 30 days or
             more delinquent more than once during the preceding 12 months, (ii)
             no Mortgage Loan had been delinquent for 60 days or more during the
             preceding 12 months and (iii) to Seller's knowledge, there was no
             delinquent tax or assessment lien against the property subject to
             any Mortgage, except where such lien was being contested in good
             faith and a stay had been granted against levying on the property;

     (i)     there is no valid offset, defense or counterclaim to any Mortgage
             Note or Mortgage, including the obligation of the Mortgagor to pay
             the unpaid principal and interest on such
             Mortgage Note;

     (j)     to Seller's knowledge, except to the extent insurance is in place
             which will cover such damage, the physical property subject to any
             Mortgage is free of material damage and is in good repair and there
             is no proceeding pending or threatened for the total or partial
             condemnation of any Mortgaged Property;

     (k)     to the best of Seller's knowledge, each Mortgage Loan at the time
             it was made complied in all material respects with applicable state
             and federal laws, including, without limitation, usury, equal
             credit opportunity and disclosure laws; provided, however, that the
             Seller makes no representation or warranty with respect to the
             legality or illegality of any fees, overages, yield spread
             premiums, servicing release premiums or back-end points that may
             have been paid to a broker or brokers in connection with the any
             Mortgage Loan; each Mortgage Loan is being serviced in all material
             respects in accordance with applicable state and federal laws,
             including, without limitation, usury, equal credit opportunity and
             disclosure laws;



<PAGE>


                                       -3-

     (l)     a lender's title insurance policy (on an ALTA or CLTA form) or
             binder, or other assurance of title customary in the relevant
             jurisdiction therefor in a form acceptable to FNMA or FHLMC, was
             issued on the date that each Mortgage Loan was created by a title
             insurance company which, to the best of Seller's knowledge, was
             qualified to do business in the jurisdiction where the related
             Mortgaged Property is located, insuring the Seller and its
             successors and assigns that the Mortgage is a first priority lien
             on the related Mortgaged Property in the original principal amount
             of the Mortgage Loan. Seller is the sole insured under such
             lender's title insurance policy, and such policy, binder or
             assurance is valid and remains in full force and effect, and each
             such policy, binder or assurance shall contain all applicable
             endorsements including a negative amortization endorsement, if
             applicable;

     (m)     in the event the Mortgage constitutes a deed of trust, either a
             trustee, duly qualified under applicable law to serve as such, has
             been properly designated and currently so serves and is named in
             the Mortgage or if no duly qualified trustee has been properly
             designated and so serves, the Mortgage contains satisfactory
             provisions for the appointment of such trustee by the holder of the
             Mortgage at no cost or expense to such holder, and no fees or
             expenses are or will become payable by Purchaser to the trustee
             under the deed of trust, except in connection with a trustee's sale
             after default by the mortgagor;

     (n)     (i) the original principal amount of each Mortgage Loan is not more
             than 95% of the Original Value; (ii) except with respect to
             approximately 0.20% of the Mortgage Loans, each Mortgage Loan with
             a Loan-to-Value Ratio at origination in excess of 80.00% will be
             insured by either (a) a Primary Mortgage Insurance Policy issued by
             a private mortgage insurer or (b) a CMAC PMI Policy, which will
             insure against default under the related Mortgage Note as follows:
             (1) with respect to each Mortgage Loan originated under the
             Seller's "Progressive Series Program", (A) for which the
             outstanding principal balance at origination of such Mortgage Loan
             is at least 80.01% and up to and including 85.00% of the value of
             the Appraised Value, such Mortgage Loan is covered by a Primary
             Insurance Policy in an amount equal to at least 12.00% of the
             Appraised Value, (B) for which the outstanding principal balance at
             origination of such Mortgage Loan is at least 85.01% and up to an
             including 90.00% of the Appraised Value, such Mortgage Loan is
             covered by a Primary Insurance Policy in an amount equal to at
             least 20.00% of the Appraised Value and (C) for which the
             outstanding principal balance at origination of such Mortgage Loan
             exceeded 90.00% of the Appraised Value, such Mortgage Loan is
             covered by a Primary Insurance Policy in an amount equal to at
             least 25.00% of the Appraised Value, (2) with respect to each
             Mortgage Loan originated under the Seller's "Progressive
             Express(TM)Program" and covered by one of the CMAC Policies, (A)
             for which the outstanding principal balance at origination of such
             Mortgage Loan is at least 80.01% and up to and including 89.99% of
             the Appraised Value, such Mortgage Loan is covered by the CMAC PMI
             Policy in an amount equal to at least 22.00% of the Appraised Value
             and (B) for which the outstanding principal balance at origination
             of such Mortgage Loan equaled or exceeded 90.00% of the Appraised
             Value, such Mortgage Loan is covered by the CMAC PMI Policy in an
             amount equal to at least 30.00% of the



<PAGE>


                                       -4-

             Appraised Value, (3) with respect to each Mortgage Loan originated
             under the Seller's "Progressive Express(TM) Program" and not
             covered by one of the CMAC Policies, for which the outstanding
             principal balance at origination of such Mortgage Loan is greater
             than or equal to 80.01% of the Appraised Value, such Mortgage Loan
             is covered by a Primary Insurance Policy in an amount equal to at
             least 22.00% of the Appraised Value, and (4) with respect to each
             Mortgage Loan originated under the Seller's "ConformPlus(TM)" or
             "Express Priority Refi(TM)" programs, (A) for which the outstanding
             principal balance at origination of such Mortgage Loan is at least
             80.01% and up to and including 90.00% of the Appraised Value, such
             Mortgage Loan is covered by a CMAC PMI Policy in an amount equal to
             at least 25.00% of the Appraised Value and (B) for which the
             outstanding principal balance at origination of such Mortgage Loan
             exceeded 90.00% of the Appraised Value, such Mortgage Loan is
             covered by a CMAC PMI Policy in an amount equal to at least 30.00%
             of the Appraised Value;

     (o)     at the time of origination, each Mortgaged Property was the subject
             of an appraisal or streamlined appraisal which conforms to the
             Seller's underwriting requirements, and a complete copy of such
             appraisal or streamlined appraisal is contained in the Mortgage
             File;

     (p)     on the basis of a representation by the borrower at the time of
             origination of the Mortgage Loans, at least 94.35% of the Mortgage
             Loans (by aggregate principal balance) will be secured by Mortgages
             on owner-occupied primary residence properties;

     (q)     neither the Seller nor any servicer of the related Mortgage Loans
             has advanced funds or knowingly received any advance of funds by a
             party other than the Mortgagor, directly or indirectly, for the
             payment of any amount required by the Mortgage, except for (i)
             interest accruing from the date of the related Mortgage Note or
             date of disbursement of the Mortgage Loan proceeds, whichever is
             later, to the date which precedes by 30 days the first Due Date
             under the related Mortgage Note, and (ii) customary advances for
             insurance and taxes;

     (r)     each Mortgage Note, the related Mortgage and other agreements
             executed in connection therewith are genuine, and each is the
             legal, valid and binding obligation of the maker thereof,
             enforceable in accordance with its terms except as such enforcement
             may be limited by bankruptcy, insolvency, reorganization or other
             similar laws affecting the enforcement of creditors' rights
             generally and by general equity principles (regardless of whether
             such enforcement is considered in a proceeding in equity or at
             law); and, to the best of Seller's knowledge, all parties to each
             Mortgage Note and the Mortgage had legal capacity to execute the
             Mortgage Note and the Mortgage and each Mortgage Note and Mortgage
             has been duly and properly executed by the Mortgagor;

     (s)     to the extent required under applicable law, each conduit seller
             and subsequent mortgagee or servicer of the Mortgage Loans was
             authorized to transact and do



<PAGE>


                                       -5-

             business in the jurisdiction in which the related Mortgaged
             Property is located at all times when it held or serviced the
             Mortgage Loan; and any obligations of the holder of the related
             Mortgage Note, Mortgage and other loan documents have been complied
             with in all material respects; servicing of each Mortgage Loan has
             been in accordance with Seller's servicing requirements and the
             terms of the Mortgage Notes, the Mortgage and other loan documents,
             whether the creation of such Mortgage Loan and servicing was done
             by the Seller, its affiliates, or any third party which created the
             Mortgage Loan on behalf of, or sold the Mortgage Loan to, any of
             them, or any servicing agent of any of the foregoing;

     (t)     the related Mortgage Note and Mortgage contain customary and
             enforceable provisions such as to render the rights and remedies of
             the holder adequate for the realization against the Mortgaged
             Property of the benefits of the security, including realization by
             judicial, or, if applicable, non-judicial foreclosure, and, to
             Seller's knowledge, there is no homestead or other exemption
             available to the Mortgagor which would interfere with such right to
             foreclosure;

     (u)     except with respect to holdbacks required by certain Mortgage Loans
             which holdbacks create a fund for (i) the repair of Mortgaged
             Property due to damage from adverse weather conditions, or (ii) the
             completion of new construction, or both, the proceeds of the
             Mortgage Loans have been fully disbursed, there is no requirement
             for future advances thereunder and any and all requirements as to
             completion of any on-site or off-site improvements and as to
             disbursements of any escrow funds therefor have been complied with;
             and all costs, fees and expenses incurred in making, closing or
             recording the Mortgage Loan have been paid, except recording fees
             with respect to Mortgages not recorded as of the Closing Date;

     (v)     as of the Closing Date, the improvements on each Mortgaged Property
             securing a Mortgage Loan is insured (by an insurer which is
             acceptable to the Seller) against loss by fire and such hazards as
             are covered under a standard extended coverage endorsement in the
             locale in which the Mortgaged Property is located, in an amount
             which is not less than the lesser of the maximum insurable value of
             the improvements securing such Mortgage Loan or the outstanding
             principal balance of the Mortgage Loan, but in no event in an
             amount less than an amount that is required to prevent the
             Mortgagor from being deemed to be a co-insurer thereunder; if the
             improvement on the Mortgaged Property is a condominium unit, it is
             included under the coverage afforded by a blanket policy for the
             condominium project; if upon origination of the related Mortgage
             Loan, the improvements on the Mortgaged Property were in an area
             identified as a federally designated flood area, a flood insurance
             policy is in effect in an amount representing coverage not less
             than the least of (i) the outstanding principal balance of the
             Mortgage Loan, (ii) the restorable cost of improvements located on
             such Mortgaged Property or (iii) the maximum coverage available
             under federal law; and each Mortgage obligates the Mortgagor
             thereunder to maintain the insurance referred to above at the
             Mortgagor's cost and expense;



<PAGE>


                                       -6-

     (w)     there is no material monetary default existing under any Mortgage
             or the related Mortgage Note and there is no material event which,
             with the passage of time or with notice and the expiration of any
             grace or cure period, would constitute a default, breach or event
             of acceleration; and neither the Seller, any of its affiliates nor
             any servicer of any related Mortgage Loan has taken any action to
             waive any material default, breach or event of acceleration; no
             foreclosure action is threatened or has been commenced with respect
             to the Mortgage Loan;

     (x)     to Seller's knowledge, no Mortgagor, at the time of origination of
             the applicable Mortgage, was a debtor in any state or federal
             bankruptcy or insolvency proceeding;

     (y)     each Mortgage Loan was originated or funded by (a) 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 originated by (i) a
             subsidiary of any of the foregoing institutions which subsidiary is
             actually supervised and examined by applicable regulatory
             authorities or (ii) a mortgage loan correspondent of any of the
             foregoing and that was originated pursuant to the criteria
             established by any of the foregoing) or (b) a mortgagee approved by
             the Secretary of Housing and Urban Development pursuant to sections
             203 and 211 of the National Housing Act, as amended;

     (z)     all inspections, licenses and certificates required to be made or
             issued with respect to all occupied portions of the Mortgaged
             Property and, with respect to the use and occupancy of the same,
             including, but not limited to, certificates of occupancy and fire
             underwriting certificates, have been made or obtained from the
             appropriate authorities;

                  (aa) to Seller's knowledge, the Mortgaged Property and all
     improvements thereon comply with all requirements of any applicable zoning
     and subdivision laws and ordinances;

                  (bb) no instrument of release or waiver has been executed in
     connection with the Mortgage Loans, and no Mortgagor has been released, in
     whole or in part, except in connection with an assumption agreement which
     has been approved by the primary mortgage guaranty insurer, if any, and
     which has been delivered to the Trustee;

                  (cc) No Mortgage Loan provides for a balloon payment and each
     Mortgage Note contains provisions providing for its full amortization by
     the end of its original term and is payable on the first day of each month
     in monthly installments of principal and interest, with interest payable in
     arrears, over an original term of not more than 30 years;

                  (dd) no Mortgage Loan was originated based on an appraisal of
     the related Mortgaged Property made prior to completion of construction of
     the improvements thereon unless a certificate of completion was obtained
     prior to closing of the Mortgage Loan;

                  (ee) each of the Mortgaged Properties consists of a single
     parcel of real property with a detached single-family residence erected
     thereon, or a two- to four-family dwelling, or an



<PAGE>


                                       -7-

     individual condominium unit in a condominium project or a townhouse, or an
     individual unit in a planned unit development.

                  (ff) no Mortgaged Property consists of a single parcel of real
     property with a cooperative housing development erected thereon. Any
     condominium unit or planned unit development conforms with Progressive Loan
     Series Program requirements regarding such dwellings or is covered by a
     waiver confirming that such condominium unit or planned unit development is
     acceptable to Seller.

                  (gg) as of the Cut-Off Date, the Mortgage Rate of each
     Mortgage Loan was not more than 13.500% per annum and not less than 7.125%
     per annum, and the weighted average Net Mortgage Rate of the Mortgage Loans
     was approximately 8.788% per annum;

                  (hh) measured by principal balance, no more than 7.84% of the
     Mortgage Loans are secured by an individual unit in a condominium project,
     and at least 85.03% of the Mortgage Loans are secured by real property with
     a detached single-family residence erected thereon,
     including DE MINIMIS PUDs.

                  (ii) as of the Cut-Off Date, the remaining scheduled term of
     each Mortgage Loan is not more than 360 months and not less than 164
     months;

                  (jj) as of the Cut-Off Date, no more than 20.04% (by aggregate
     principal balance) of the Mortgage Loans are cash-out refinances;

                  (kk) as of the Cut-Off Date, no more than 10.99% (by aggregate
     principal balance) of the Mortgage Loans are rate and term refinances;

                  (ll) as of the Cut-Off Date, no fewer than 68.74% (by
     aggregate principal balance) of the Mortgage Loans are purchase money
     loans;

                  (mm) as of the Cut-Off Date, no more than 34.71% of the
     Mortgage Loans (by principal balance) are secured by properties located in
     the state of California;

                  (nn) the original principal balances of the Mortgage Loans
     ranged from approximately $25,000 to approximately $386,250. The maximum
     outstanding principal balance of any Mortgage Loan as of the Cut-off Date
     was approximately $385,596 and the average outstanding principal balance
     was approximately $128,064.

                  (oo) with respect to Mortgaged Properties at the time of
     origination of the related Mortgage Loans, measured by aggregate unpaid
     principal balance as of the Cut-off Date, at least 94.35% of the Mortgaged
     Properties are owner occupied primary residences, no more than 2.38% of the
     Mortgaged Properties are second homes and no more than 3.28% of the
     Mortgaged Properties are investor owned properties;




<PAGE>


                                       -8-

                  (pp) as of the Cut-off Date, approximately 31.74% (by
     principal balance) of the Mortgage Loans were originated under, or in
     accordance with the standards of, Series I of the Progressive Loan Series
     Program;

                  (qq) as of the Cut-off Date, approximately 2.33% (by principal
     balance) of the Mortgage Loans were originated under, or in accordance with
     the standards of, Series II of the Progressive Loan Series Program;

                  (rr) as of the Cut-off Date, approximately 1.19% (by principal
     balance) of the Mortgage Loans were originated under, or in accordance with
     the standards of, Series III of the Progressive Loan Series Program;

                  (ss) as of the Cut-off Date, approximately 0.66% (by principal
     balance) of the Mortgage Loans were originated under, or in accordance with
     the standards of, Series III+ of the Progressive Loan Series Program;

                  (tt) as of the Cut-off Date, approximately 0.04% (by principal
     balance) of the Mortgage Loans, respectively, were originated under, or in
     accordance with the standards of, Series IV of the Progressive Loan Series
     Program;

                  (uu) as of the Cut-off Date, approximately 0.09% (by principal
     balance) of the Mortgage Loans, respectively, were originated under, or in
     accordance with the standards of, Series V of the Progressive Loan Series
     Program;

                  (vv) as of the Cut-off Date, approximately 55.78% (by
     principal balance) of the Mortgage Loans were originated under, or in
     accordance with the standards of, the Progressive Express Loan Series
     Program;

                  (ww) each Mortgage Loan constitutes a "qualified mortgage"
     under Section 860G(a)(3)(A) of the Code and Treasury Regulation Section
     1.860G-2(a)(1); and

                  (xx) No selection procedure reasonably believed by the Seller
     to be adverse to the interests of the Certificateholders was utilized in
     selecting the Mortgage Loans.




<PAGE>


                                    EXHIBIT J

                        Form of Notice Under Section 3.24


                                                 ___________, 1998


Bankers Trust Company of California, N.A.
3 Park Plaza, 16th Floor
Irvine, California  92614

                 Re: Mortgage Pass-Through Certificates, Series 1998-3
                     -------------------------------------------------


         Pursuant to Section 3.25 of the Pooling and Servicing Agreement, dated
as of September 1, 1998, relating to the Certificates referenced above, the
undersigned does hereby notify you that:

         (a) The prepayment assumption used in pricing the Certificates was a
Constant Prepayment Rate ("CPR") of __% per annum.

         (b) With respect to each Class of the captioned Certificates, set forth
below is (i), the first price, as a percentage of the Certificate Principal
Balance of each Class of Certificates, at which 10% of the aggregate Certificate
Principal Balance of each such Class of Certificates was first sold at a single
price, if applicable, or (ii) if more than 10% of a Class of Certificates have
been sold but no single price is paid for at least 10% of the aggregate
Certificate Principal Balance of such Class of Certificates, then the weighted
average price at which the Certificates of such Class were sold expressed as a
percentage of the Certificate Principal Balance of such Class of Certificates,
(iii) if less than 10% of the aggregate Certificate Principal Balance of a Class
of Certificates has been sold, the purchase price for each such Class of
Certificates paid by Lehman Brothers Inc. (the "Underwriter") expressed as a
percentage of the Certificate Principal Balance of such Class of Certificates
calculated by: (1) estimating the fair market value of each such Class of
Certificates as of September 29, 1998; (2) adding such estimated fair market
value to the aggregate purchase prices of each Class of Certificates described
in clause (i) or (ii) above; (3) dividing each of the fair market values
determined in clause (1) by the sum obtained in clause (2); (4) multiplying the
quotient obtained for each Class of Certificates in clause (3) by the purchase
price paid by the Underwriter for all the Certificates purchased by it; and (5)
for each Class of Certificates, dividing the product obtained from such Class of
Certificates in clause (4) by the



<PAGE>


                                       -2-

initial Principal Balance of such Class of Certificates or (iv) the fair market
value (but not less than zero) as of the Closing Date of each Certificate of
each Class of Certificates retained by the Depositor or an affiliate
corporation, or delivered to the seller:

                 Class A-1:   ____________________
                 Class A-2:   ____________________
                 Class A-3:   ____________________
                 Class B-1:   ____________________
                 Class B-2:   ____________________
                 Class B-3:   ____________________
                 Class M-1:   ____________________
                 Class M-2:   ____________________
                 Class M-3:   ____________________
                 Class R:     ____________________

         The prices and values set forth above do not include accrued interest
with respect to periods before the closing.



                                     IMPAC SECURED ASSETS CORP.


                                     By:__________________________________
                                     Name:
                                     Title:




<PAGE>


                                    EXHIBIT K

                         Schedule of Discount Fractions

                             (Provided Upon Request)



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