Document:

CONSULTING AGREEMENT

This  Consulting  Agreement  (this  "Agreement") is entered into on September 2,
2003  between  New  Brunswick Scientific Co., Inc. a New Jersey corporation (the
"Company"),  and  Sigmund  Freedman  (the  "Consultant").

Whereas,  the Company desires to obtain the benefit of the Consultants knowledge
and experience by retaining the Consultant, and the Consultant desires to accept
such position, for the term and upon the other conditions hereinafter set forth.

Now, THEREFORE, in consideration of the mutual promises and agreements contained
herein,  the  adequacy  and  sufficiency  of  which are hereby acknowledged, the
Company  and  the  Consultant  hereby  agree  as  follows:

1.     EFFECTIVE  DATE AND CONSULTING TERM: This Agreement shall be effective on
the  date  first  written  above  (the  "Effective Date").  The Consultant shall
commence  rendering  his  consulting services hereunder on September 2, 2003 and
shall  continue  to  render such services for a one year term expiring on August
31, 2004 (the "Consulting Term"), unless this Agreement is terminated earlier in
accordance  with  Section  5  or  6  below.

2.     POSITION  AND  DUTIES:  During the Consulting Term, the Consultant shall,
at  the  request  of  the Company's President or Chief Executive officer, render
consulting  services  to the Company relating to treasury and financial matters.
During  the Consulting Term, the Consultant shall not be required to devote more
than  40  hours per month to the rendering of his consulting services hereunder.

3.     LOCATION:  The  Consultant's consulting services shall be rendered at the
Company's  principal  executive  offices  or  at  any  other  mutually agreeable
location.  The  Company  will  provide  the  Consultant  with  office  space and
secretarial  or  other  support  services  in  connection  with his rendering of
consulting  services  hereunder.

COMPENSATION:  The Consultant shall be compensated by the Company at the rate of
$3,250  per  month.

4.3     EXPENSES:  During  the  Consulting Term, the Company shall reimburse the
Consultant  for all previously approved business expenses reasonably incurred by
the  Consultant  in  the  performance  of his consulting services hereinunder as
requested  by  the  President  or the Chief Executive Officer of the Company and
upon  submission  to the Company of appropriate documentation in respect of such
expenses.

4.4  BENEFITS:  During the Consulting Term, the Consultant shall not be entitled
to  any  employee  benefits (e.g. group health, insurance, vacation, sick leave,
severance  or  401(k)  participation)  from  the  Company.

5.  VOLUNTARY  TERMINATION:  The  Consultant  may  voluntarily  terminate  his
consultancy  for  any  reason  upon providing the Company with thirty (30) days'
prior  written  notice.  In  the event the Consultant voluntarily terminates his
consultancy  with  the  Company,  the  Consultant  shall  be  entitled  to  no
compensation  from  the  Company  other  than  in  respect  of  (i)  any  weekly
installment  of consulting fees earned but not yet paid as of the effective date
of his termination and (ii) the reimbursement of his expenses in accordance with
Section  4  (c)  above.

6.  OTHER  TERMINATION:  The  Consultant's  consultancy may be terminated by the
Company  in the event of the Consultant's death or disability (as defined below)
or  for  cause  (as  defined below).  Upon termination under this Section 6, the
Consultant  shall  be entitled to no compensation from the Company other than in
respect of (i) any weekly installment of consulting fees earned but not yet paid
as  of  the  effective date of his termination and (ii) the reimbursement of his
expenses  in  accordance  with  Section  4  (c)  above.  For  purposes  of  this
Agreement, (a) "disability" means the Consultant's inability to perform services
for  any  consecutive  30-day  period  as  a  result of a physical and/or mental
impairment  and  (b)  "for  cause"  means  a  termination  of  the  Consultant's
consultancy  by  the  Company for any of the following reasons:  (i)  any action
taken  by  the  Consultant  which  has  a material and detrimental effect on the
Company, its shareholders, its reputation or its business; (ii) the Consultant's
willful  and continued refusal to perform any duty reasonably assigned to him in
accordance  with  the  provisions  of  this  Agreement; (iii) any breach of this
Agreement by the Consultant, which if curable, is not cured within ten (10) days
following written notice from the Company to the Consultant of such breach; (iv)
the Consultant's conviction (including any plea of guilty or nolo contendre) for
any  criminal  act  which impairs the Consultant's ability to perform his duties
under  this  Agreement;  or  (v)  the  Consultant becoming an officer, director,
employee or agent of, or a consultant to, a corporation, person, firm or entity,
which  in  the reasonable determination of the Company results in, or is, likely
to  result  in,  a  conflict  of  interest  with  the Consultant's position as a
consultant  to  the  Company.

7.     NON-SOLICITATION:  During  the period from the Effective Date through the
end  of  the  Consulting  Term  and  for  a  twelve month period thereafter, the
Consultant  will  not,  directly  or  indirectly,  recruit,  induce or otherwise
attempt  to  persuade  any  person  who  is  new  or who subsequently becomes an
employee  of  the Company to terminate his or her relationship with the Company.

8.     CONFIDENTIALITY:  The  Consultant  shall not, commencing on the Effective
Date  and at all times thereafter, directly or indirectly communicate or divulge
to,  or  use  for  the  Consultant's own benefit or for the benefit of any other
person,  or  entity,  any  of  the Company's trade secrets, proprietary data and
confidential  information  (including without limitation, non public information
pertaining  to  or derived from (i) meetings at the Company and (ii) discussions
with  any  officer  or  employee  or  former  officer or employee of the Company
communicated to or otherwise learned or acquired by the Consultant in the course
of  his  service  hereunder  or during the period when he was an employee of the
Company.

9.     MUTUAL  RELEASE:  The Consultant on behalf of himself and his successors,
assigns and heirs and on behalf of each person or entity claiming through any of
them,  and the Company, on behalf of itself and its affiliates, their respective
successors  and  assigns and each person or entity claiming through them, hereby
forever  relieves,  releases  and  discharges the other (and, as applicable, any
released  party's  successors,  predecessors, assigns, heirs, agents, directors,
officers  and  employees)  from any and all claims, debts, liabilities, demands,
obligations,  actions,  or  causes  of  action,  whether  arising out of acts or
omissions  occurring  before  the  execution of this Agreement, whether known or
unknown,  apparent or concealed; provided, however, that nothing herein shall be
deemed  to  release.  (i) the Company or the Consultant in connection with their
respective  rights  and  obligations under this Agreement, (ii) the Consultant's
rights to indemnification or reimbursement under the Company's by-laws, articles
of  incorporation  or  insurance  policies  and (iii) the Consultant's rights to
reimbursement  of  expenses  incurred  in respect of his service to the Company.

10.     DISPUTE RESOLUTION:  In the event of any dispute or claim relating to or
arising out of the Consultant's relationship with the Company, this Agreement or
the  termination  of  the consultancy with the Company for any reason (including
but  not  limited  to, any claims of breach of contract, wrongful termination or
age,  disability  or other discrimination), any dispute or claim shall be fully,
finally  and  exclusively  resolved  by  binding  arbitration  conducted  by the
American  Arbitration  Association  in  Middlesex  County.

11.     OWNERSHIP  OF  COMPANY  DOCUMENTS: All memoranda, notes, lists, records,
reports,  presentation  material, and other documents, as well as all records or
information  stored  and/or  transmitted  in  electronic  media  (and all copies
thereof), made or compiled by the Consultant or made available to the Consultant
concerning  the business of the Company, and all confidential information of the
Company  in  any  form shall be the Company's property and shall be delivered to
the Company promptly upon the termination of this Consulting Agreement or at any
other  earlier  time  requested  by  the  Company.

12.     MISCELLANEOUS:

12.1     REMEDIES:  In  view  of  the  difficulty  of  determining the amount of
damages  which  may  result from a violation by the Consultant of one or more of
his  convenants,  obligations  or  agreements  contained  in  this  Consulting
Agreement, Consultant acknowledges and agrees that the Company shall be entitled
to  such  relief  in  both  law  and  equity as an appropriate court or judicial
tribunal,  awards,  to  the  Company,  including, but not limited to, injunctive
relief  and  specific  performance.

12.2     SEVERABILITY  AND  REFORMATION:  If any part of this Agreement shall be
held  unenforceable, the remainder of the Agreement shall nevertheless remain in
full  force  and  effect.

12.3     SURVIVAL:  Each  relevant  obligation  of  each party shall survive any
termination  of  this  Agreement  or  of  the Consultant's engagement hereunder.

12.4     RELATIONSHIP  BETWEEN  THE PARTIES:  It is expressly agreed between the
parties that the Consultant is retained by the Company only for the purposes and
to  the  extent set forth in this Agreement.  The relationship of the Consultant
to  the  Company  is that of an independent contractor and not as an employee or
agent  of  the  Company.

12.5     ASSIGNMENT:  Neither  this  Agreement  nor  any  of  the  rights  and
obligations  hereunder  may be assigned by either party hereto without the prior
written  consent  of the other party; provided, however, that this Agreement may
                                      ------------------
be  assigned  by  the Company to any of its affiliates or in connection with any
merger,  consolidation  or  sale  of  all  or  substantially  all of its assets.

12.6     WAIVER:  The  waiver  by  either  party  of  a  breach of any provision
contained  herein  shall  be  in  writing  and shall in no way be construed as a
waiver  of  any  succeeding  breach  of  such  provision or of the waiver of the
provision  itself.

12.7     GOVERNING  LAW:  This Agreement shall be governed by and interpreted in
accordance  with  the  laws  of  the  State  of New Jersey without regard to its
conflicts  of  law  principles.

12.8     HEADINGS:  The section or paragraph headings used in this Agreement are
included  solely  for  convenience and shall not affect or be used in connection
with  the  interpretation  of  this  Agreement.

12.9     AMENDMENTS:  No  amendments  or  additions  to  this Agreement shall be
binding  unless  the  same  is  in  writing  and  signed  by  both  parties.

12.10     ENTIRE  AGREEMENT:  This  Agreement  constitutes  the entire Agreement
between the parties with respect to the subject matter hereof and supersedes all
prior  and  contemporaneous  agreements  with  respect  to  such subject matter.

IN  WITNESS  WHEREOF,  this  Agreement  has been executed the day and year first
above  written.

WITNESS:                    NEW  BRUNSWICK  SCIENTIFIC  CO.,  INC.

                         By:  David  Freedman
                         Title:  Chief  Executive  Officer
                         Date:

WITNESS:
                         By:  Sigmund  Freedman

                         Date:ACE SECURITIES CORP.
                                    Depositor

                               THE PROVIDENT BANK
                                    Servicer

                WELLS FARGO BANK MINNESOTA, NATIONAL ASSOCIATION
                  Master Servicer and Securities Administrator

                         BANK ONE, NATIONAL ASSOCIATION
                                     Trustee

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

                         POOLING AND SERVICING AGREEMENT

                           Dated as of August 1, 2003

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

          ACE Securities Corp. Home Equity Loan Trust, Series 2003-HS1
                     Asset Backed Pass-Through Certificates

<PAGE>

                                    ARTICLE I

                                   DEFINITIONS

SECTION 1.01. Defined Terms ..............................................  -4-
              Accepted Master Servicing Practices ........................  -4-
              Accepted Servicing Practices ...............................  -4-
              Account ....................................................  -4-
              Accrued Certificate Interest ...............................  -4-
              Adjustable Rate Mortgage Loan ..............................  -4-
              Adjustment Date ............................................  -5-
              Administration Fees ........................................  -5-
              Administration Fee Rate ....................................  -5-
              Advance Facility ...........................................  -5-
              Affiliate ..................................................  -5-
              Aggregate Loss Severity Percentage .........................  -5-
              Agreement ..................................................  -5-
              Amounts Held for Future Distribution .......................  -5-
              Assignment .................................................  -5-
              Available Distribution Amount ..............................  -5-
              Balloon Mortgage Loan ......................................  -6-
              Balloon Payment ............................................  -6-
              Bankruptcy Code ............................................  -6-
              Book-Entry Certificate .....................................  -6-
              Book-Entry Custodian .......................................  -6-
              Business Day ...............................................  -6-
              Cash-Out Refinancing .......................................  -6-
              Certificate ................................................  -7-
              Certificate Factor .........................................  -7-
              Certificate Margin .........................................  -7-
              Certificateholder" or "Holder ..............................  -8-
              Certificate Owner ..........................................  -8-
              Certificate Principal Balance ..............................  -8-
              Certificate Register .......................................  -9-
              Class ......................................................  -9-
              Class A Certificate ........................................  -9-
              Class A Principal Distribution Amount ......................  -9-
              Class A-1 Allocation Percentage ............................  -9-
              Class A-1 Certificate ......................................  -9-
              Class A-1 Principal Distribution Amount ....................  -9-
              Class A-2 Allocation Percentage ............................  -9-
              Class A-2 Certificate ...................................... -10-

                                      -ii-
<PAGE>

              Class A-2A Certificate .....................................  -10-
              Class A-2B Certificate .....................................  -10-
              Class A-2B Policy ..........................................  -10-
              Class A-2B Policy Payments Account .........................  -10-
              Class A-2 Principal Distribution Amount ....................  -10-
              Class CE Certificate .......................................  -10-
              Class M Certificates .......................................  -10-
              Class M-1 Certificate ......................................  -11-
              Class M-1 Principal Distribution Amount ....................  -11-
              Class M-2 Certificate ......................................  -11-
              Class M-2 Principal Distribution Amount ....................  -11-
              Class M-3 Certificate ......................................  -11-
              Class M-3 Principal Distribution Amount ....................  -12-
              Class M-4 Certificate ......................................  -12-
              Class M-4 Principal Distribution Amount ....................  -12-
              Class M-5 Certificate ......................................  -12-
              Class M-5 Principal Distribution Amount ....................  -13-
              Class M-6 Certificate ......................................  -13-
              Class M-6 Principal Distribution Amount ....................  -13-
              Class P Certificate ........................................  -14-
              Class R Certificates .......................................  -14-
              Class R-I Interest .........................................  -14-
              Class R-II Interest ........................................  -14-
              Closing Date ...............................................  -14-
              Code .......................................................  -14-
              Collection Account .........................................  -14-
              Commission .................................................  -14-
              Corporate Trust Office .....................................  -14-
              Corresponding Certificate ..................................  -14-
              Credit Enhancement Percentage ..............................  -15-
              Credit Risk Management Agreement ...........................  -15-
              Credit Risk Management Fee .................................  -15-
              Credit Risk Management Fee Rate ............................  -15-
              Credit Risk Manager ........................................  -15-
              Custodial Agreement ........................................  -15-
              Custodian ..................................................  -15-
              Cut-off Date ...............................................  -15-
              Debt Service Reduction .....................................  -15-
              Deficient Valuation ........................................  -16-
              Definitive Certificates ....................................  -16-
              Deleted Mortgage Loan ......................................  -16-
              Delinquency Percentage .....................................  -16-
              Depositor ..................................................  -16-

                                      -iii-
<PAGE>
              Depository .................................................  -16-
              Depository Institution .....................................  -16-
              Depository Participant .....................................  -17-
              Determination Date .........................................  -17-
              Directly Operate ...........................................  -17-
              Disqualified Organization ..................................  -17-
              Distribution Account .......................................  -17-
              Distribution Date ..........................................  -18-
              Due Date ...................................................  -18-
              Due Period .................................................  -18-
              Eligible Account ...........................................  -18-
              ERISA ......................................................  -18-
              Estate in Real Property ....................................  -18-
              Excess Liquidation Proceeds ................................  -18-
              Expense Adjusted Mortgage Rate .............................  -18-
              Extraordinary Trust Fund Expense ...........................  -18-
              Extra Principal Distribution Amount ........................  -18-
              Fannie Mae .................................................  -18-
              FDIC .......................................................  -18-
              Final Recovery Determination ...............................  -19-
              Fiscal Agent ...............................................  -19-
              Fitch ......................................................  -19-
              Freddie Mac ................................................  -19-
              Gross Margin ...............................................  -19-
              Group I Interest Remittance Amount .........................  -19-
              Group I Mortgage Loans .....................................  -19-
              Group I Principal Distribution Amount ......................  -19-
              Group I Principal Remittance Amount ........................  -20-
              Group II  Interest Remittance Amount .......................  -20-
              Group II Mortgage Loans ....................................  -20-
              Group II Principal Distribution Amount .....................  -20-
              Group II Principal Remittance Amount .......................  -20-
              Independent ................................................  -20-
              Independent Contractor .....................................  -21-
              Index ......................................................  -21-
              Insurance Agreement ........................................  -21-
              Insurance Proceeds .........................................  -21-
              Interest Accrual Period ....................................  -21-
              Interest Carry Forward Amount ..............................  -21-
              Interest Determination Date ................................  -22-
              Interest Distribution Amount ...............................  -22-
              Interest Remittance Amount .................................  -22-
              Late Collections ...........................................  -22-

                                      -iv-
<PAGE>

              Last Scheduled Distribution Date ...........................  -22-
              Late Payment Rate ..........................................  -22-
              Liquidation Event ..........................................  -22-
              Liquidation Proceeds .......................................  -22-
              Loan-to-Value Ratio ........................................  -22-
              London Business Day ........................................  -23-
              Loss Severity Percentage ...................................  -23-
              Marker Rate ................................................  -23-
              Master Servicer ............................................  -23-
              Master Servicer Certification ..............................  -23-
              Master Servicer Event of Default ...........................  -23-
              Master Servicer Fee Rate ...................................  -23-
              Master Servicing Fee .......................................  -24-
              Maximum I-LTZZ Uncertificated Interest Deferral Amount .....  -24-
              Maximum Mortgage Rate ......................................  -24-
              MBIA .......................................................  -24-
              MBIA Contact Person ........................................  -24-
              MBIA Default ...............................................  -24-
              MBIA Premium Amount ........................................  -24-
              MBIA Premium Rate ..........................................  -24-
              MBIA Reimbursement Amount ..................................  -24-
              MERS .......................................................  -25-
              MERS(R)System ..............................................  -25-
              Mezzanine Certificate ......................................  -25-
              MGIC .......................................................  -25-
              MGIC Fee ...................................................  -25-
              MGIC Fee Rate ..............................................  -25-
              MGIC PMI Mortgage Loans ....................................  -25-
              MGIC PMI Policy ............................................  -25-
              MIN ........................................................  -25-
              Minimum Mortgage Rate ......................................  -25-
              MOM Loan ...................................................  -25-
              Monthly Payment ............................................  -25-
              Moody's ....................................................  -26-
              Mortgage ...................................................  -26-
              Mortgage File ..............................................  -26-
              Mortgage Loan ..............................................  -26-
              Mortgage Loan Documents ....................................  -26-
              Mortgage Loan Purchase Agreement ...........................  -26-
              Mortgage Loan Schedule .....................................  -26-
              Mortgage Note ..............................................  -28-
              Mortgage Rate ..............................................  -28-
              Mortgaged Property .........................................  -29-

                                       -v-
<PAGE>

              Mortgagor ..................................................  -29-
              Net Monthly Excess Cashflow ................................  -29-
              Net Mortgage Rate ..........................................  -29-
              Net WAC Pass-Through Rate ..................................  -29-
              Net WAC Rate Carryover Amount ..............................  -30-
              New Lease ..................................................  -30-
              Nonrecoverable P&I Advance .................................  -30-
              Nonrecoverable Servicing Advance ...........................  -31-
              Non-United States Person ...................................  -31-
              Notional Amount ............................................  -31-
              Offered Certificates .......................................  -31-
              Officer's Certificate ......................................  -31-
              One-Month LIBOR ............................................  -31-
              One-Month LIBOR Pass-Through Rate ..........................  -32-
              Opinion of Counsel .........................................  -32-
              Optional Termination Date ..................................  -33-
              Originator .................................................  -33-
              Overcollateralization Amount ...............................  -33-
              Overcollateralization Increase Amount ......................  -33-
              Overcollateralization Reduction Amount .....................  -33-
              Ownership Interest .........................................  -33-
              P&I Advance ................................................  -33-
              Pass-Through Rate ..........................................  -33-
              Percentage Interest ........................................  -35-
              Periodic Rate Cap ..........................................  -35-
              Permitted Investments ......................................  -35-
              Permitted Transferee .......................................  -36-
              Person .....................................................  -36-
              Plan .......................................................  -36-
              Preference Amount ..........................................  -36-
              Prepayment Assumption ......................................  -36-
              Prepayment Charge ..........................................  -37-
              Prepayment Charge Schedule .................................  -37-
              Prepayment Interest Shortfall ..............................  -37-
              Prepayment Period ..........................................  -38-
              Principal Prepayment .......................................  -38-
              Principal Distribution Amount ..............................  -38-
              Principal Remittance Amount ................................  -38-
              Purchase Price .............................................  -38-
              Qualified Substitute Mortgage Loan .........................  -38-
              Rate/Term Refinancing ......................................  -39-
              Rating Agency or Rating Agencies ...........................  -39-
              Realized Loss ..............................................  -39-

                                      -vi-
<PAGE>

              Record Date ................................................  -40-
              Reference Banks ............................................  -41-
              Refinanced Mortgage Loan ...................................  -41-
              Regular Certificate ........................................  -41-
              Regular Interest ...........................................  -41-
              Relief Act .................................................  -41-
              Relief Act Interest Shortfall ..............................  -41-
              REMIC ......................................................  -41-
              REMIC I ....................................................  -41-
              REMIC I Interest Loss Allocation Amount ....................  -41-
              REMIC I Overcollateralization Amount .......................  -42-
              REMIC I Principal Loss Allocation Amount ...................  -42-
              REMIC I Regular Interest ...................................  -42-
              REMIC I Regular Interest I-LTAA ............................  -42-
              REMIC I Regular Interest I-LTA .............................  -43-
              REMIC I Regular Interest I-LTA2A ...........................  -43-
              REMIC I Regular Interest I-LTA2B ...........................  -43-
              REMIC I Regular Interest I-LTM1 ............................  -43-
              REMIC I Regular Interest I-LTM2 ............................  -43-
              REMIC I Regular Interest I-LTM3 ............................  -43-
              REMIC I Regular Interest I-LTM4 ............................  -43-
              REMIC I Regular Interest I-LTM5 ............................  -44-
              REMIC I Regular Interest I-LTM6 ............................  -44-
              REMIC I Regular Interest I-LTP .............................  -44-
              REMIC I Regular Interest I-LTXX ............................  -44-
              REMIC I Regular Interest I-LTZZ ............................  -44-
              REMIC I Regular Interest I-LT1A ............................  -44-
              REMIC I Regular Interest I-LT1B ............................  -45-
              REMIC I Regular Interest I-LT2A ............................  -45-
              REMIC I Regular Interest I-LT2B ............................  -45-
              REMIC I Sub WAC Allocation Percentage ......................  -45-
              REMIC I Subordinated Balance Ratio .........................  -45-
              REMIC I Required Overcollateralization Amount ..............  -45-
              REMIC II ...................................................  -46-
              REMIC II Certificate .......................................  -46-
              REMIC II Certificateholder .................................  -46-
              REMIC Provisions ...........................................  -46-
              Remittance Report ..........................................  -46-
              Rents from Real Property ...................................  -46-
              REO Account ................................................  -46-
              REO Disposition ............................................  -46-
              REO Imputed Interest .......................................  -46-
              REO Principal Amortization .................................  -46-

                                      -vii-
<PAGE>

              REO Property ...............................................  -47-
              Required Overcollateralization Amount ......................  -47-
              Reserve Fund ...............................................  -47-
              Reserve Interest Rate ......................................  -47-
              Residential Dwelling .......................................  -47-
              Residual Certificate .......................................  -47-
              Residual Interest ..........................................  -47-
              Responsible Officer ........................................  -47-
              S&P ........................................................  -48-
              Scheduled Principal Balance ................................  -48-
              Securities Administrator ...................................  -48-
              Seller .....................................................  -48-
              Senior Interest Distribution Amount ........................  -48-
              Servicer ...................................................  -48-
              Servicer Event of Default ..................................  -48-
              Servicer Remittance Date ...................................  -49-
              Servicer Report ............................................  -49-
              Servicing Advances .........................................  -49-
              Servicing Fee ..............................................  -49-
              Servicing Fee Rate .........................................  -49-
              Servicing Officer ..........................................  -49-
              Single Certificate .........................................  -49-
              Startup Day ................................................  -49-
              Stated Principal Balance ...................................  -50-
              Stepdown Date ..............................................  -50-
              Sub-Servicer ...............................................  -50-
              Sub-Servicing Agreement ....................................  -50-
              Substitution Shortfall Amount ..............................  -50-
              Tax Returns ................................................  -51-
              Telerate Page 3750 .........................................  -51-
              Termination Price ..........................................  -51-
              Terminator .................................................  -51-
              Transfer ...................................................  -51-
              Transferee .................................................  -51-
              Transferor .................................................  -51-
              Trigger Event ..............................................  -51-
              Trust ......................................................  -51-
              Trust Fund .................................................  -51-
              Trust REMIC ................................................  -52-
              Trustee ....................................................  -52-
              Uncertificated Balance .....................................  -52-
              Uncertificated Interest ....................................  -52-
              Uninsured Cause ............................................  -52-

                                     -viii-
<PAGE>

              United States Person .......................................  -52-
              Value ......................................................  -53-
              Voting Rights ..............................................  -53-
              Wells Fargo ................................................  -53-
SECTION 1.02. Allocation of Certain Interest Shortfalls ..................  -53-

                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS;

SECTION 2.01. Conveyance of the Mortgage Loans ...........................  -55-
SECTION 2.02. Acceptance of REMIC I by Trustee ...........................  -56-
SECTION 2.03. Repurchase or Substitution of Mortgage Loans ...............  -56-
SECTION 2.04. Representations and Warranties of the Master Servicer ......  -58-
SECTION 2.05. Representations, Warranties and Covenants of the Servicer ..  -60-
SECTION 2.06. Issuance of the REMIC I Regular Interests and the
              Class R-I Interest .........................................  -62-
SECTION 2.07. Conveyance of the REMIC I Regular Interests; Acceptance
              of REMIC I by the Trustee ..................................  -62-
SECTION 2.08. Issuance of Class R Certificates ...........................  -63-
SECTION 2.09. Establishment of the Trust .................................  -63-

                                   ARTICLE III

                          ADMINISTRATION AND SERVICING
                         OF THE MORTGAGE LOANS; ACCOUNTS
SECTION 3.01. Servicer to Act as Servicer ................................  -64-
SECTION 3.02. Sub-Servicing Agreements Between Servicer and
              Sub-Servicers ..............................................  -66-
SECTION 3.03. Successor Sub-Servicers ....................................  -66-
SECTION 3.04. No Contractual Relationship Between Sub-Servicer,
              Trustee or the Certificateholders ..........................  .66-
SECTION 3.05. Assumption or Termination of Sub-Servicing Agreement
              by Successor Servicer ......................................  -67-
SECTION 3.06. Collection of Certain Mortgage Loan Payments ...............  -67-
SECTION 3.07. Collection of Taxes, Assessments and Similar Items;
              Servicing Accounts .........................................  -68-
SECTION 3.08. Collection Account and Distribution Account ................  -68-
SECTION 3.09. Withdrawals from the Collection Account and Distribution
              Account ....................................................  -71-
SECTION 3.10. Investment of Funds in the Investment Accounts .............  -72-
SECTION 3.11. Maintenance of Hazard Insurance, Errors and Omissions
              and Fidelity Coverage ......................................  -74-
SECTION 3.12. Enforcement of Due-on-Sale Clauses; Assumption Agreements ..  -76-

                                      -ix-
<PAGE>

SECTION 3.13. Realization Upon Defaulted Mortgage Loans ..................  -76-
SECTION 3.14. Trustee to Cooperate; Release of Mortgage Files ............  -78-
SECTION 3.15. Servicing Compensation .....................................  -80-
SECTION 3.16. Collection Account Statements ..............................  -80-
SECTION 3.17. Statement as to Compliance .................................  -80-
SECTION 3.18. Independent Public Accountants' Servicing Report ...........  -81-
SECTION 3.19  Annual Certification .......................................  -81-
SECTION 3.20. Access to Certain Documentation ............................  -82-
SECTION 3.21. Title, Management and Disposition of REO Property ..........  -82-
SECTION 3.22. Obligations of the Servicer in Respect of Prepayment
              Interest Shortfalls; Relief Act Interest Shortfalls ........  -85-
SECTION 3.23. Obligations of the Servicer in Respect of Mortgage
              Rates and Monthly Payments .................................  -85-
SECTION 3.24. Reserve Fund ...............................................  -86-
SECTION 3.25. Advance Facility ...........................................  -87-
SECTION 3.26. Servicer Indemnification ...................................  -88-

                                   ARTICLE IV

                       ADMINISTRATION AND MASTER SERVICING
                  OF THE MORTGAGE LOANS BY THE MASTER SERVICER

SECTION 4.01. Master Servicer ............................................  -90-
SECTION 4.02. REMIC-Related Covenants ....................................  -91-
SECTION 4.03. Monitoring of Servicer .....................................  -91-
SECTION 4.04. Fidelity Bond ..............................................  -92-
SECTION 4.05. Power to Act; Procedures ...................................  -92-
SECTION 4.06. Due-on-Sale Clauses; Assumption Agreements .................  -93-
SECTION 4.07. Reserved ...................................................  -93-
SECTION 4.08. Documents, Records and Funds in Possession of Master
              Servicer To Be Held for Trustee ............................  -93-
SECTION 4.09. Standard Hazard Insurance and Flood Insurance Policies .....  -94-
SECTION 4.10. Presentment of Claims and Collection of Proceeds ...........  -94-
SECTION 4.11. Maintenance of the Primary Mortgage Insurance Policies .....  -94-
SECTION 4.12. Trustee to Retain Possession of Certain Insurance
              Policies and Documents .....................................  -95-
SECTION 4.13. Realization Upon Defaulted Mortgage Loans ..................  -95-
SECTION 4.14. Compensation for the Master Servicer .......................  -95-
SECTION 4.15. REO Property ...............................................  -95-
SECTION 4.16. Annual Officer's Certificate as to Compliance ..............  -96-
SECTION 4.17. Annual Independent Accountant's Servicing Report ...........  -97-
SECTION 4.18. UCC ........................................................  -97-

                                       -x-
<PAGE>

SECTION 4.19. Obligation of the Master Servicer in Respect of
              Prepayment Interest Shortfalls ............................   -97-
SECTION 4.20. Collection Account ........................................   -97-
SECTION 4.21. Prepayment Penalty Verification ...........................   -98-

                                    ARTICLE V

                         PAYMENTS TO CERTIFICATEHOLDERS

SECTION 5.01. Distributions .............................................   -99-
SECTION 5.02. Statements to Certificateholders ..........................  -112-
SECTION 5.03. Servicer Reports; P&I Advances ............................  -115-
SECTION 5.04. Allocation of Realized Losses .............................  -116-
SECTION 5.05. Compliance with Withholding Requirements ..................  -118-
SECTION 5.06. Reports Filed with Securities and Exchange Commission .....  -119-
SECTION 5.07. Policy Matters ............................................  -119-

                                   ARTICLE VI

                                THE CERTIFICATES

SECTION 6.01. The Certificates ..........................................  -124-
SECTION 6.02. Registration of Transfer and Exchange of Certificates .....  -126-
SECTION 6.03. Mutilated, Destroyed, Lost or Stolen Certificates .........  -130-
SECTION 6.04. Persons Deemed Owners .....................................  -131-
SECTION 6.05. Certain Available Information .............................  -131-

                                   ARTICLE VII

               THE DEPOSITOR, THE SERVICER AND THE MASTER SERVICER

SECTION 7.01. Liability of the Depositor, the Servicer and
              the Master Servicer .......................................  -133-
SECTION 7.02. Merger or Consolidation of the Depositor, the Servicer
              or the Master Servicer ....................................  -133-
SECTION 7.03. Limitation on Liability of the Depositor, the Servicer,
              the Master Servicer and Others.............................  -133-
SECTION 7.04. Limitation on Resignation of the Servicer..................  -134-
SECTION 7.05. Limitation on Resignation of the Master Servicer...........  -135-
SECTION 7.06. Assignment of Master Servicing.............................  -135-
SECTION 7.07. Rights of the Depositor in Respect of the Servicer
              and the Master Servicer ...................................  -136-
SECTION 7.08. Duties of the Credit Risk Manager..........................  -137-
SECTION 7.09. Limitation Upon Liability of the Credit Risk Manager.......  -137-

                                      -xi-
<PAGE>

SECTION 7.10.  Removal of the Credit Risk Manager .......................  -137-

                                  ARTICLE VIII

                                     DEFAULT

SECTION 8.01.  Servicer Events of Default ...............................  -138-
SECTION 8.02.  Master Servicer to Act; Appointment of Successor .........  -142-
SECTION 8.03.  Notification to Certificateholders .......................  -143-
SECTION 8.04.  Waiver of Servicer Events of Default .....................  -143-

                                   ARTICLE IX

             CONCERNING THE TRUSTEE AND THE SECURITIES ADMINISTRATOR

SECTION 9.01.  Duties of Trustee and Securities Administrator ...........  -144-
SECTION 9.02.  Certain Matters Affecting Trustee and Securities
               Administrator ............................................  -145-
SECTION 9.03.  Trustee and Securities Administrator not Liable for
               Certificates or Mortgage Loans ....... ...................  -147-
SECTION 9.04.  Trustee and Securities Administrator May Own
               Certificates .............................................  -147-
SECTION 9.05.  Fees and Expenses of Trustee and Securities
               Administrator ............................................  -147-
SECTION 9.06.  Eligibility Requirements for Trustee and Securities
               Administrator ............................................  -148-
SECTION 9.07.  Resignation and Removal of Trustee and Securities
               Administrator ............................................  -148-
SECTION 9.08.  Successor Trustee or Securities Administrator ............  -149-
SECTION 9.09.  Merger or Consolidation of Trustee or Securities
               Administrator ............................................  -150-
SECTION 9.10.  Appointment of Co-Trustee or Separate Trustee ............  -150-
SECTION 9.11.  Appointment of Office or Agency ..........................  -151-
SECTION 9.12.  Representations and Warranties ...........................  -151-

                                    ARTICLE X

                                   TERMINATION

SECTION 10.01. Termination Upon Repurchase or Liquidation of All
               Mortgage Loans ...........................................  -153-
SECTION 10.02. Additional Termination Requirements ......................  -155-

                                   ARTICLE XI

                                REMIC PROVISIONS

SECTION 11.01. REMIC Administration .....................................  -156-

                                     -xii-
<PAGE>

SECTION 11.02. Prohibited Transactions and Activities ...................  -158-
SECTION 11.03. Indemnification ..........................................  -159-

                                   ARTICLE XII

                            MISCELLANEOUS PROVISIONS

SECTION 12.01. Amendment ................................................  -160-
SECTION 12.02. Recordation of Agreement; Counterparts ...................  -161-
SECTION 12.03. Limitation on Rights of Certificateholders ...............  -161-
SECTION 12.04. Governing Law ............................................  -162-
SECTION 12.05. Notices ..................................................  -162-
SECTION 12.06. Severability of Provisions ...............................  -163-
SECTION 12.07. Notice to Rating Agencies and MBIA .......................  -163-
SECTION 12.08. Article and Section References ...........................  -164-
SECTION 12.09. Grant of Security Interest ...............................  -164-
SECTION 12.10. Survival of Indemnification ..............................  -165-
SECTION 12.11. MBIA's Rights ............................................  -165-

                                     -xiii-
<PAGE>

Exhibits

Exhibit A-1    Form of Class A Certificate
Exhibit A-2    Form of Class M Certificate
Exhibit A-3    Form of Class CE Certificate
Exhibit A-4    Form of Class P Certificate
Exhibit A-5    Form of Class R Certificate
Exhibit B-1    Form of Transferor Representation Letter and Form of Transferee
               Representation Letter in Connection with Transfer of the Class P
               Certificates, Class CE Certificates and Residual Certificates
               Pursuant to Rule 144A Under the 1933 Act
Exhibit B-2    Form of Transferor Representation Letter and Form of Transferee
               Representation Letter in Connection with Transfer of the Class P
               Certificates, Class CE Certificates and Residual Certificates
               Pursuant to Rule 501 (a) Under the 1933 Act
Exhibit B-3    Form of Transfer Affidavit and Agreement and Form of Transferor
               Affidavit in Connection with Transfer of Residual Certificates
Exhibit C      Form of Servicer Certification
Exhibit D      Class A-2B Policy

Schedule 1     Mortgage Loan Schedule
Schedule 2     Prepayment Charge Schedule
Schedule 3     MGIC PMI Mortgage Loans

                                      -xiv-
<PAGE>

            This Pooling and Servicing Agreement, is dated and effective as of
August 1, 2003, among ACE SECURITIES CORP. as Depositor, THE PROVIDENT BANK as
Servicer, WELLS FARGO BANK MINNESOTA, NATIONAL ASSOCIATION as Master Servicer
and Securities Administrator and BANK ONE, NATIONAL ASSOCIATION as Trustee.

                             PRELIMINARY STATEMENT:

            The Depositor intends to sell pass-through certificates to be issued
hereunder in multiple classes, which in the aggregate will evidence the entire
beneficial ownership interest of the Trust Fund created hereunder. The Trust
Fund will consist of a segregated pool of assets comprised of the Mortgage Loans
and certain other related assets subject to this Agreement.

                                     REMIC I

            As provided herein, the Trustee will elect to treat the segregated
pool of assets consisting of the Mortgage Loans and certain other related assets
subject to this Agreement (other than the Reserve Fund) as a REMIC for federal
income tax purposes, and such segregated pool of assets will be designated as
"REMIC I". The Class R-I Interest will be the sole class of "residual interests"
in REMIC I for purposes of the REMIC Provisions (as defined herein). The
following table irrevocably sets forth the designation, the REMIC I Remittance
Rate, the initial Uncertificated Balance and, solely for purposes of satisfying
Treasury regulation Section 1.860G-1(a)(4)(iii), the "latest possible maturity
date" for each of the REMIC I Regular Interests (as defined herein). None of the
REMIC I Regular Interests will be certificated.

                    REMIC I              Initial             Latest Possible
Designation    Remittance Rate    Uncertificated Balance    Maturity Date (1)
-----------    ---------------    ----------------------    -----------------

I-LTAA            Variable(2)         $199,976,685.71        June 25, 2033
I-LTA1            Variable(2)         $1,420,445.00          June 25, 2033
I-LTA2A           Variable(2)         $123,745.00            June 25, 2033
I-LTA2B           Variable(2)         $175,000.00            June 25, 2033
I-LTM1            Variable(2)         $112,230.00            June 25, 2033
I-LTM2            Variable(2)         $102,030.00            June 25, 2033
I-LTM3            Variable(2)         $20,405.00             June 25, 2033
I-LTM4            Variable(2)         $20,405.00             June 25, 2033
I-LTM5            Variable(2)         $10,200.00             June 25, 2033
I-LTM6            Variable(2)         $20,405.00             June 25, 2033
I-LTZZ            Variable(2)         $2,076,291.85          June 25, 2033
I-LTP             Variable(2)         $100.00                June 25, 2033
I-LT1A            Variable(2)         $5,310.85              June 25, 2033

                                      -1-
<PAGE>

I-LT1B            Variable(2)         $33,719.75             June 25, 2033
I-LT2A            Variable(2)         $1,116.93              June 25, 2033
I-LT2B            Variable(2)         $7,091.83              June 25, 2033
I-LTXX            Variable(2)         $204,010,603.21        June 25, 2033

----------
(1)   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 has been designated as
      the "latest possible maturity date" for each REMIC I Regular Interest.

(2)   Calculated in accordance with the definition of "REMIC I Remittance Rate"
      herein.

                                    REMIC II

            As provided herein, the Trustee will elect to treat the segregated
pool of assets consisting of the REMIC I Regular Interests as a REMIC for
federal income tax purposes, and such segregated pool of assets will be
designated as "REMIC II." The Class R-II Interest will evidence the sole class
of "residual interests" in REMIC II for purposes of the REMIC Provisions. The
following table irrevocably sets forth the designation, the Pass-Through Rate,
the initial aggregate Certificate Principal Balance and, solely for purposes of
satisfying Treasury regulation Section 1.860G-1(a)(4)(iii), the "latest possible
maturity date" for the indicated Classes of Certificates.

                                      Initial Aggregate
                 Pass Through      Certificate Principal      Latest Possible
  Designation        Rate                 Balance            Maturity Date (1)
---------------  ------------      ---------------------     -----------------
Class A-1         Variable(2)         $284,089,000.00           June 25, 2033
Class A-2A        Variable(2)         $24,749,000.00            June 25, 2033
Class A-2B        Variable(2)         $35,000,000.00            June 25, 2033
Class M-1         Variable(2)         $22,446,000.00            June 25, 2033
Class M-2         Variable(2)         $20,406,000.00            June 25, 2033
Class M-3         Variable(2)         $4,081,000.00             June 25, 2033
Class M-4         Variable(2)         $4,081,000.00             June 25, 2033
Class M-5         Variable(2)         $2,040,000.00             June 25, 2033
Class M-6         Variable(2)         $4,081,000.00             June 25, 2033
Class P                N/A(3)         $100.00                   June 25, 2033
Class CE               N/A(4)         $7,142,685.00             June 25, 2033
----------
(1)   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 has been designated as
      the "latest possible maturity date" for each Class of Certificates.

(2)   Calculated in accordance with the definition of "Pass-Through Rate"
      herein.

(3)   The Class P Certificates will not accrue interest.

(4)   The Class CE Certificates will accrue interest at their variable
      Pass-Through Rate on the Notional Amount of the Class CE Certificates
      outstanding from time to time which shall equal the Uncertificated Balance
      of the REMIC I Regular Interests. The Class CE Certificates will not
      accrue interest on their Certificate Principal Balance.

                                      -2-
<PAGE>

      As of the Cut-off Date, the Group I Mortgage Loans had an aggregate
Scheduled Principal Balance equal to $337,197,509.40 and the Group II Mortgage
Loans had an aggregate Scheduled Principal Balance equal to $70,918,275.73.

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

                                      -3-
<PAGE>

                                    ARTICLE I

                                   DEFINITIONS

            SECTION 1.01. Defined Terms.

            Whenever used in this Agreement, including, without limitation, in
the Preliminary Statement hereto, the following words and phrases, unless the
context otherwise requires, shall have the meanings specified in this Article.
Unless otherwise specified, all calculations described herein shall be made on
the basis of a 360-day year consisting of twelve 30-day months.

            "Accepted Master Servicing Practices": With respect to any Mortgage
Loan, as applicable, either (x) those customary mortgage master servicing
practices of prudent mortgage servicing institutions that master service
mortgage loans of the same type and quality as such Mortgage Loan in the
jurisdiction where the related Mortgaged Property is located, to the extent
applicable to the Master Servicer (except in its capacity as successor to the
Servicer), or (y) as provided in Section 3.01 hereof, but in no event below the
standard set forth in clause (x).

            "Accepted Servicing Practices": As defined in Section 3.01.

            "Account": The Collection Account, the Distribution Account and the
Class A-2B Policy Payments Account as the context may require.

            "Accrued Certificate Interest": With respect to any Class A
Certificate, Mezzanine Certificate or Class CE Certificate and each Distribution
Date, interest accrued during the related Interest Accrual Period at the
Pass-Through Rate for such Certificate for such Distribution Date on the
Certificate Principal Balance, in the case of the Class A Certificates and the
Mezzanine Certificates, or on the Notional Amount in the case of the Class CE
Certificates, of such Certificate immediately prior to such Distribution Date.
The Class P Certificates are not entitled to distributions in respect of
interest and, accordingly, will not accrue interest. All distributions of
interest on the Class A Certificates and the Mezzanine Certificates will be
calculated on the basis of a 360-day year and the actual number of days in the
applicable Interest Accrual Period. All distributions of interest on the Class
CE Certificates will be based on a 360-day year consisting of twelve 30-day
months. Accrued Certificate Interest with respect to each Distribution Date, as
to any Class A Certificate, Mezzanine Certificate or Class CE Certificate shall
be reduced by an amount equal to the portion allocable to such Certificate
pursuant to Section 1.02 hereof, if any, of the sum of (a) the aggregate
Prepayment Interest Shortfall, if any, for such Distribution Date to the extent
not covered by payments pursuant to Section 3.22 or Section 4.19 and (b) the
aggregate amount of any Relief Act Interest Shortfall, if any, for such
Distribution Date. In addition, Accrued Certificate Interest with respect to
each Distribution Date, as to any Class CE Certificate, shall be reduced by an
amount equal to the portion allocable to such Class CE Certificate of Realized
Losses, if any, pursuant to Section 1.02 and Section 5.04 hereof.

                                      -4-
<PAGE>

            "Adjustable Rate Mortgage Loan": Each of the Mortgage Loans
identified in the Mortgage Loan Schedule as having a Mortgage Rate that is
subject to adjustment.

            "Adjustment Date": With respect to each Adjustable Rate Mortgage
Loan, the first day of the month in which the Mortgage Rate of an Adjustable
Rate Mortgage Loan changes pursuant to the related Mortgage Note. The first
Adjustment Date following the Cut-off Date as to each Adjustable Rate Mortgage
Loan is set forth in the Mortgage Loan Schedule.

            "Administration Fees": The sum of (i) the Servicing Fee, (ii) the
Master Servicing Fee, (iii) the MGIC Fee and (iv) the Credit Risk Management
Fee.

            "Administration Fee Rate": The sum of (i) the Servicing Fee Rate,
(ii) the Master Servicing Fee Rate, (iii) the MGIC Fee Rate and (iv) the Credit
Risk Management Fee Rate.

            "Advance Facility": As defined in Section 3.25(a).

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

            "Aggregate Loss Severity Percentage": With respect to any
Distribution Date, the percentage equivalent of a fraction, the numerator of
which is the aggregate amount of Realized Losses incurred on any Mortgage Loans
from the Cut-off Date to the last day of the preceding calendar month and the
denominator of which is the aggregate principal balance of such Mortgage Loans
immediately prior to the liquidation of such Mortgage Loans.

            "Agreement": This Pooling and Servicing Agreement, including all
exhibits and schedules hereto and all amendments hereof and supplements hereto.

            "Amounts Held for Future Distribution": As to any Distribution Date,
the aggregate amount held in the Collection Account at the close of business on
the immediately preceding Determination Date on account of (i) all Monthly
Payments or portions thereof received in respect of the Mortgage Loans due after
the related Due Period and (ii) Principal Prepayments and Liquidation Proceeds
received in respect of such Mortgage Loans after the last day of the related
Prepayment Period.

            "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, which assignment, notice of transfer or
equivalent instrument may be in the form of one or more blanket assignments
covering Mortgages secured by Mortgaged Properties located in the same county,
if permitted by law.

                                      -5-
<PAGE>

            "Available Distribution Amount": With respect to any Distribution
Date, an amount equal to (1) the sum of (a) the aggregate of the amounts on
deposit in the Collection Account and Distribution Account as of the close of
business on the related Servicer Remittance Date, (b) the aggregate of any
amounts deposited in the Distribution Account by the Servicer or the Master
Servicer in respect of Prepayment Interest Shortfalls for such Distribution Date
pursuant to Section 3.22 or Section 4.19, (c) the aggregate of any P&I Advances
for such Distribution Date made by the Servicer pursuant to Section 5.03 and (d)
the aggregate of any P&I Advances made by a successor Servicer (including the
Master Servicer) for such Distribution Date pursuant to Section 8.02, reduced
(to not less than zero) by (2) the portion of the amount described in clause
(1)(a) above that represents (i) Amounts Held for Future Distribution, (ii)
Principal Prepayments on the Mortgage Loans received after the related
Prepayment Period (together with any interest payments received with such
Principal Prepayments to the extent they represent the payment of interest
accrued on the Mortgage Loans during a period subsequent to the related
Prepayment Period), (iii) Liquidation Proceeds and Insurance Proceeds received
in respect of the Mortgage Loans after the related Prepayment Period, (iv)
amounts reimbursable or payable to the Depositor, the Servicer, the Trustee, the
Master Servicer, the Securities Administrator or the Custodian pursuant to
Section 3.09 or 9.05 or otherwise payable in respect of Extraordinary Trust Fund
Expenses, (v) the Credit Risk Management Fee and the MGIC Fee, (vi) amounts
deposited in the Collection Account or the Distribution Account in error, (vii)
the amount of any Prepayment Charges collected by the Servicer and any
Prepayment Charges paid by the Servicer in connection with the Principal
Prepayment of any of the Mortgage Loans and (viii) amounts reimbursable to a
successor Servicer (including the Master Servicer) pursuant to Section 8.02.

            "Balloon Mortgage Loan": A Mortgage Loan that provides for the
payment of the unamortized principal balance of such Mortgage Loan in a single
payment at the maturity of such Mortgage Loan that is substantially greater than
the preceding monthly payment.

            "Balloon Payment": A payment of the unamortized principal balance of
a Mortgage Loan in a single payment at the maturity of such Mortgage Loan that
is substantially greater than the preceding Monthly Payment.

            "Bankruptcy Code": The Bankruptcy Reform Act of 1978 (Title 11 of
the United States Code), as amended.

            "Book-Entry Certificates": The Offered Certificates for so long as
the Certificates of such Class shall be registered in the name of the Depository
or its nominee.

            "Book-Entry Custodian": The custodian appointed pursuant to Section
6.01.

            "Business Day": Any day other than a Saturday, a Sunday or a day on
which banking or savings and loan institutions in the States of New York,
Florida, Maryland, Minnesota, New Jersey or in the city in which the Corporate
Trust Office of the Trustee or the principal office of MBIA is located, are
authorized or obligated by law or executive order to be closed.

                                      -6-
<PAGE>

            "Cash-Out Refinancing": A Refinanced Mortgage Loan the proceeds of
which are more than a nominal amount in excess of the principal balance of any
existing first mortgage plus any subordinate mortgage on the related Mortgaged
Property and related closing costs.

            "Certificate": Any one of the Depositor's Asset Backed Pass-Through
Certificates, Series 2003-HS1, Class A-1, Class A-2A, Class A-2B, Class M-1,
Class M-2, Class M-3, Class M-4, Class M-5, Class M-6, Class P, Class CE and
Class R issued under this Agreement.

            "Certificate Factor":With respect to any Class of Certificates
(other than the Residual Certificates) as of any Distribution Date, a fraction,
expressed as a decimal carried to six places, the numerator of which is the
aggregate Certificate Principal Balance (or Notional Amount, in the case of the
Class CE Certificates) of such Class of Certificates on such Distribution Date
(after giving effect to any distributions of principal and allocations of
Realized Losses resulting in reduction of the Certificate Principal Balance (or
Notional Amount, in the case of the Class CE Certificates) of such Class of
Certificates to be made on such Distribution Date), and the denominator of which
is the initial aggregate Certificate Principal Balance (or Notional Amount, in
the case of the Class CE Certificates) of such Class of Certificates as of the
Closing Date.

            "Certificate Margin": With respect to the Class A-1 Certificates
and, for purposes of the definition of "Marker Rate", REMIC II Regular Interest
I-LTA1, 0.35% in the case of each Distribution Date through and including the
Optional Termination Date and 0.70% in the case of each Distribution Date
thereafter.

            With respect to the Class A-2A Certificates and, for purposes of the
definition of "Marker Rate", REMIC II Regular Interest I-LTA2A, 0.37% in the
case of each Distribution Date through and including the Optional Termination
Date and 0.74% in the case of each Distribution Date thereafter.

            With respect to the Class A-2B Certificates and, for purposes of the
definition of "Marker Rate", REMIC II Regular Interest I-LTA2B, 0.29% in the
case of each Distribution Date through and including the Optional Termination
Date and 0.58% in the case of each Distribution Date thereafter.

            With respect to the Class M-1 Certificates and, for purposes of the
definition of "Marker Rate", REMIC II Regular Interest I-LTM1, 0.75% in the case
of each Distribution Date through and including the Optional Termination Date
and 1.125% in the case of each Distribution Date thereafter.

            With respect to the Class M-2 Certificates and, for purposes of the
definition of "Marker Rate", REMIC II Regular Interest I-LTM2, 1.75% in the case
of each Distribution Date through and including the Optional Termination Date
and 2.625% in the case of each Distribution Date thereafter.

            With respect to the Class M-3 Certificates and, for purposes of the
definition of "Marker Rate", REMIC II Regular Interest I-LTM3, 2.50% in the case
of each Distribution Date through and including the Optional Termination Date
and 3.75% in the case of each Distribution Date thereafter.

                                      -7-
<PAGE>

            With respect to the Class M-4 Certificates and, for purposes of the
definition of "Marker Rate", REMIC II Regular Interest I-LTM4, 3.75% in the case
of each Distribution Date through and including the Optional Termination Date
and 5.625% in the case of each Distribution Date thereafter.

            With respect to the Class M-5 Certificates and, for purposes of the
definition of "Marker Rate", REMIC II Regular Interest I-LTM5, 4.00% in the case
of each Distribution Date through and including the Optional Termination Date
and 6.00% in the case of each Distribution Date thereafter.

            With respect to the Class M-6 Certificates and, for purposes of the
definition of "Marker Rate", REMIC II Regular Interest I-LTM6, 4.00% in the case
of each Distribution Date through and including the Optional Termination Date
and 6.00% in the case of each Distribution Date thereafter.

            "Certificateholder" or "Holder": The Person in whose name a
Certificate is registered in the Certificate Register, except that a
Disqualified Organization or a Non-United States Person shall not be a Holder of
a Residual Certificate for any purposes hereof, and, with respect to the Class
A-2B Certificates, MBIA to the extent of any MBIA Reimbursement Amount and
solely for the purposes of giving any consent pursuant to this Agreement, any
Certificate registered in the name of or beneficially owned by the Depositor,
the Seller, the Servicer, the Master Servicer, the Securities Administrator, the
Trustee or any Affiliate thereof shall be deemed not to be outstanding and the
Voting Rights to which it 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 12.01. The Trustee and the Securities Administrator may conclusively
rely upon a certificate of the Depositor, the Seller, the Master Servicer, the
Securities Administrator or the Servicer in determining whether a Certificate is
held by an Affiliate thereof. 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 and the Securities Administrator shall be required to recognize as a
"Holder" or "Certificateholder" only the Person in whose name a Certificate is
registered in the Certificate Register.

            "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 the Depository or on the books of a Depository Participant or on the books of
an indirect participating brokerage firm for which a Depository Participant acts
as agent.

            "Certificate Principal Balance": With respect to each Class A
Certificate, Mezzanine Certificate or Class P Certificate as of any date of
determination, the Certificate Principal Balance of such Certificate on the
Distribution Date immediately prior to such date of determination, minus all
distributions allocable to principal made thereon and Realized Losses allocated
thereto, if any, on such immediately prior Distribution Date (or, in the case of
any date of determination up to and including the first Distribution Date, the
initial Certificate Principal Balance of such Certificate, as stated on the face
thereof). With respect to each Class CE Certificate as of any date of
determination, an amount equal to the Percentage Interest evidenced by such
Certificate times the excess, if any, of (A) the then aggregate Uncertificated
Balances of the REMIC I Regular Interests over (B) the then aggregate
Certificate Principal Balances of the Class

                                      -8-
<PAGE>

A Certificates, the Mezzanine Certificates and the Class P Certificates then
outstanding. The aggregate initial Certificate Principal Balance of each Class
of Regular Certificates is set forth in the Preliminary Statement hereto.
Exclusively for the purpose of determining any subrogation rights of MBIA
arising under Section 5.07, the Certificate Principal Balance of the Class A-2B
Certificates shall not be reduced by the amount of any payments made by MBIA in
respect of principal on such Certificates under the Class A-2B Policy, except to
the extent such payment shall have been reimbursed to MBIA pursuant to the
provisions of this Agreement.

            "Certificate Register": The register maintained pursuant to Section
6.02.

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

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

            "Class A Principal Distribution Amount": The Class A Principal
Distribution Amount is an amount equal to the sum of the Class A-1 Principal
Distribution Amount and the Class A-2 Principal Distribution Amount.

            "Class A-1 Allocation Percentage": With respect to any Distribution
Date is the percentage equivalent of a fraction, the numerator of which is (x)
the Group I Principal Remittance Amount for such Distribution Date and the
denominator of which is (y) the Principal Remittance Amount for such
Distribution Date.

            "Class A-1 Certificate": Any one of the Class A-1 Certificates
executed and authenticated by the Securities Administrator and delivered by the
Trustee, substantially in the form annexed hereto as Exhibit A-1 and evidencing
a Regular Interest in REMIC II for purposes of the REMIC Provisions.

            "Class A-1 Principal Distribution Amount": With respect to any
Distribution Date on or after the Stepdown Date and on which a Trigger Event is
not in effect, the excess of (x) the Certificate Principal Balance of the Class
A-1 Certificates immediately prior to such Distribution Date over (y) the lesser
of (A) the product of (i) 68.50% and (ii) the aggregate Stated Principal Balance
of the Group I Mortgage Loans as of the last day of the related Due Period
(after giving effect to scheduled payments of principal due during the related
Due Period, to the extent received or advanced and unscheduled collections of
principal received during the related Prepayment Period) and (B) the aggregate
Stated Principal Balance of the Group I Mortgage Loans as of the last day of the
related Due Period (after giving effect to scheduled payments of principal due
during the related Due Period, to the extent received or advanced and
unscheduled collections of principal received during the related Prepayment
Period) minus $1,685,988.

            "Class A-2 Allocation Percentage": With respect to any Distribution
Date is the percentage equivalent of a fraction, the numerator of which is (x)
the Group II Principal Remittance Amount for such Distribution Date and the
denominator of which is (y) the Principal Remittance Amount for such
Distribution Date.

                                      -9-
<PAGE>

            "Class A-2 Certificate": Any Class A-2A Certificate or Class A-2B
Certificate.

            "Class A-2A Certificate": Any one of the Class A-2A Certificates
executed and authenticated by the Securities Administrator and delivered by the
Trustee, substantially in the form annexed hereto as Exhibit A-1 and evidencing
a Regular Interest in REMIC II for purposes of the REMIC Provisions.

            "Class A-2B Certificate": Any one of the Class A-2B Certificates
executed and authenticated by the Securities Administrator and delivered by the
Trustee, substantially in the form annexed hereto as Exhibit A-1 and evidencing
a Regular Interest in REMIC II for purposes of the REMIC Provisions.

            "Class A-2B Policy": The irrevocable Certificate Guaranty Insurance
Policy, No. 42230, including any endorsements thereto, issued by MBIA with
respect to the Class A-2B Certificates, in the form attached hereto as Exhibit
D.

            "Class A-2B Policy Payments Account": The separate Eligible Account
created and maintained by the Securities Administrator pursuant to Section
5.07(c) in the name of the Securities Administrator for the benefit of the Class
A-2B Certificateholders and designated "Wells Fargo Bank Minnesota, National
Association, in trust for registered holders of ACE Securities Corp. Home Equity
Loan Trust, Series 2003-HS1, Class A-2B." Funds in the Class A-2B Policy
Payments Account shall be held in trust for the Class A-2B Certificateholders
for the uses and purposes set forth in this Agreement.

            "Class A-2 Principal Distribution Amount": With respect to any
Distribution Date on or after the Stepdown Date and on which a Trigger Event is
not in effect, the excess of (x) the aggregate Certificate Principal Balance of
the Class A-2 Certificates immediately prior to such Distribution Date over (y)
the lesser of (A) the product of (i) 68.50% and (ii) the aggregate Stated
Principal Balance of the Group II Mortgage Loans as of the last day of the
related Due Period (after giving effect to scheduled payments of principal due
during the related Due Period, to the extent received or advanced and
unscheduled collections of principal received during the related Prepayment
Period) and (B) the aggregate Stated Principal Balance of the Group II Mortgage
Loans as of the last day of the related Due Period (after giving effect to
scheduled payments of principal due during the related Due Period, to the extent
received or advanced and unscheduled collections of principal received during
the related Prepayment Period) minus $354,591.

            "Class CE Certificate": Any one of the Class CE Certificates
executed and authenticated by the Securities Administrator and delivered by the
Trustee, substantially in the form annexed hereto as Exhibit A-3 and evidencing
a Regular Interest in REMIC II for purposes of the REMIC Provisions.

            "Class M Certificates": The Class M-1, Class M-2, Class M-3, Class
M-4, Class M-5 and Class M-6 Certificates.

                                      -10-
<PAGE>

            "Class M-1 Certificate": Any one of the Class M-1 Certificates
executed and authenticated by the Securities Administrator and delivered by the
Trustee, substantially in the form annexed hereto as Exhibit A-2 and evidencing
a Regular Interest in REMIC II for purposes of the REMIC Provisions.

            "Class M-1 Principal Distribution Amount": With respect to any
Distribution Date on or after the Stepdown Date and on which a Trigger Event is
not in effect, the excess of (x) the sum of (i) the aggregate Certificate
Principal Balance of the Class A Certificates (after taking into account the
payment of the Class A Principal Distribution Amount on such Distribution Date)
and (ii) the Certificate Principal Balance of the Class M-1 Certificates
immediately prior to such Distribution Date over (y) the lesser of (A) the
product of (i) 79.50% and (ii) the aggregate Stated Principal Balance of the
Mortgage Loans as of the last day of the related Due Period (after giving effect
to scheduled payments of principal due during the related Due Period, to the
extent received or advanced and unscheduled collections of principal received
during the related Prepayment Period) and (B) the aggregate Stated Principal
Balance of the Mortgage Loans as of the last day of the related Due Period
(after giving effect to scheduled payments of principal due during the related
Due Period, to the extent received or advanced and unscheduled collections of
principal received during the related Prepayment Period) minus $2,040,579.

            "Class M-2 Certificate": Any one of the Class M-2 Certificates
executed and authenticated by the Securities Administrator and delivered by the
Trustee, substantially in the form annexed hereto as Exhibit A-2 and evidencing
a Regular Interest in REMIC II for purposes of the REMIC Provisions.

            "Class M-2 Principal Distribution Amount": With respect to any
Distribution Date on or after the Stepdown Date and on which a Trigger Event is
not in effect, the excess of (x) the sum of (i) the aggregate Certificate
Principal Balance of the Class A Certificates (after taking into account the
payment of the Class A Principal Distribution Amount on such Distribution Date),
(ii) the Certificate Principal Balance of the Class M-1 Certificates (after
taking into account the payment of the Class M-1 Principal Distribution Amount
on such Distribution Date) and (iii) the Certificate Principal Balance of the
Class M-2 Certificates immediately prior to such Distribution Date over (y) the
lesser of (A) the product of (i) 89.50% and (ii) the aggregate Stated Principal
Balance of the Mortgage Loans as of the last day of the related Due Period
(after giving effect to scheduled payments of principal due during the related
Due Period, to the extent received or advanced and unscheduled collections of
principal received during the related Prepayment Period) and (B) the aggregate
Stated Principal Balance of the Mortgage Loans as of the last day of the related
Due Period (after giving effect to scheduled payments of principal due during
the related Due Period, to the extent received or advanced and unscheduled
collections of principal received during the related Prepayment Period) minus
$2,040,579.

            "Class M-3 Certificate": Any one of the Class M-3 Certificates
executed and authenticated by the Securities Administrator and delivered by the
Trustee, substantially in the form annexed hereto as Exhibit A-2 and evidencing
a Regular Interest in REMIC II for purposes of the REMIC Provisions.

            "Class M-3 Principal Distribution Amount": With respect to any
Distribution Date on or after the Stepdown Date and on which a Trigger Event is
not in effect, the excess of (x) the sum of (i) the aggregate Certificate
Principal Balance of the Class A Certificates (after taking into account the
payment

                                      -11-
<PAGE>

of the Class A Principal Distribution Amount on such Distribution Date), (ii)
the Certificate Principal Balance of the Class M-1 Certificates (after taking
into account the payment of the Class M-1 Principal Distribution Amount on such
Distribution Date), (iii) the Certificate Principal Balance of the Class M-2
Certificates (after taking into account the payment of the Class M-2 Principal
Distribution Amount on such Distribution Date) and (iv) the Certificate
Principal Balance of the Class M-3 Certificates immediately prior to such
Distribution Date over (y) the lesser of (A) the product of (i) 91.50% and (ii)
the aggregate Stated Principal Balance of the Mortgage Loans as of the last day
of the related Due Period (after giving effect to scheduled payments of
principal due during the related Due Period, to the extent received or advanced
and unscheduled collections of principal received during the related Prepayment
Period) and (B) the aggregate Stated Principal Balance of the Mortgage Loans as
of the last day of the related Due Period (after giving effect to scheduled
payments of principal due during the related Due Period, to the extent received
or advanced and unscheduled collections of principal received during the related
Prepayment Period) minus $2,040,579.

            "Class M-4 Certificate": Any one of the Class M-4 Certificates
executed and authenticated by the Securities Administrator and delivered by the
Trustee, substantially in the form annexed hereto as Exhibit A-2 and evidencing
a Regular Interest in REMIC II for purposes of the REMIC Provisions.

            "Class M-4 Principal Distribution Amount": With respect to any
Distribution Date on or after the Stepdown Date and on which a Trigger Event is
not in effect, the excess of (x) the sum of (i) the aggregate Certificate
Principal Balance of the Class A Certificates (after taking into account the
payment of the Class A Principal Distribution Amount on such Distribution Date),
(ii) the Certificate Principal Balance of the Class M-1 Certificates (after
taking into account the payment of the Class M-1 Principal Distribution Amount
on such Distribution Date), (iii) the Certificate Principal Balance of the Class
M-2 Certificates (after taking into account the payment of the Class M-2
Principal Distribution Amount on such Distribution Date), (iv) the Certificate
Principal Balance of the Class M-3 Certificates (after taking into account the
payment of the Class M-3 Principal Distribution Amount on such Distribution
Date) and (v) the Certificate Principal Balance of the Class M-4 Certificates
immediately prior to such Distribution Date over (y) the lesser of (A) the
product of (i) 93.50% and (ii) the aggregate Stated Principal Balance of the
Mortgage Loans as of the last day of the related Due Period (after giving effect
to scheduled payments of principal due during the related Due Period, to the
extent received or advanced and unscheduled collections of principal received
during the related Prepayment Period) and (B) the aggregate Stated Principal
Balance of the Mortgage Loans as of the last day of the related Due Period
(after giving effect to scheduled payments of principal due during the related
Due Period, to the extent received or advanced and unscheduled collections of
principal received during the related Prepayment Period) minus $2,040,579.

            "Class M-5 Certificate": Any one of the Class M-5 Certificates
executed and authenticated by the Securities Administrator and delivered by the
Trustee, substantially in the form annexed hereto as Exhibit A-2 and evidencing
a Regular Interest in REMIC II for purposes of the REMIC Provisions.

            "Class M-5 Principal Distribution Amount": With respect to any
Distribution Date on or after the Stepdown Date and on which a Trigger Event is
not in effect, the excess of (x) the sum of (i) the aggregate Certificate
Principal Balance of the Class A Certificates (after taking into account the
payment

                                      -12-
<PAGE>

of the Class A Principal Distribution Amount on such Distribution Date), (ii)
the Certificate Principal Balance of the Class M-1 Certificates (after taking
into account the payment of the Class M-1 Principal Distribution Amount on such
Distribution Date), (iii) the Certificate Principal Balance of the Class M-2
Certificates (after taking into account the payment of the Class M-2 Principal
Distribution Amount on such Distribution Date), (iv) the Certificate Principal
Balance of the Class M-3 Certificates (after taking into account the payment of
the Class M-3 Principal Distribution Amount on such Distribution Date), (v) the
Certificate Principal Balance of the Class M-4 Certificates (after taking into
account the payment of the Class M-4 Principal Distribution Amount on such
Distribution Date) and (vi) the Certificate Principal Balance of the Class M-5
Certificates immediately prior to such Distribution Date over (y) the lesser of
(A) the product of (i) 94.50% and (ii) the aggregate Stated Principal Balance of
the Mortgage Loans as of the last day of the related Due Period (after giving
effect to scheduled payments of principal due during the related Due Period, to
the extent received or advanced and unscheduled collections of principal
received during the related Prepayment Period) and (B) the aggregate Stated
Principal Balance of the Mortgage Loans as of the last day of the related Due
Period (after giving effect to scheduled payments of principal due during the
related Due Period, to the extent received or advanced and unscheduled
collections of principal received during the related Prepayment Period) minus
$2,040,579.

            "Class M-6 Certificate": Any one of the Class M-6 Certificates
executed and authenticated by the Securities Administrator and delivered by the
Trustee, substantially in the form annexed hereto as Exhibit A-2 and evidencing
a Regular Interest in REMIC II for purposes of the REMIC Provisions.

            "Class M-6 Principal Distribution Amount": With respect to any
Distribution Date on or after the Stepdown Date and on which a Trigger Event is
not in effect, the excess of (x) the sum of (i) the aggregate Certificate
Principal Balance of the Class A Certificates (after taking into account the
payment of the Class A Principal Distribution Amount on such Distribution Date),
(ii) the Certificate Principal Balance of the Class M-1 Certificates (after
taking into account the payment of the Class M-1 Principal Distribution Amount
on such Distribution Date), (iii) the Certificate Principal Balance of the Class
M-2 Certificates (after taking into account the payment of the Class M-2
Principal Distribution Amount on such Distribution Date), (iv) the Certificate
Principal Balance of the Class M-3 Certificates (after taking into account the
payment of the Class M-3 Principal Distribution Amount on such Distribution
Date), (v) the Certificate Principal Balance of the Class M-4 Certificates
(after taking into account the payment of the Class M-4 Principal Distribution
Amount on such Distribution Date), (vi) the Certificate Principal Balance of the
Class M-5 Certificates (after taking into account the payment of the Class M-5
Principal Distribution Amount on such Distribution Date) and (vii) the
Certificate Principal Balance of the Class M-6 Certificates immediately prior to
such Distribution Date over (y) the lesser of (A) the product of (i) 96.50% and
(ii) the aggregate Stated Principal Balance of the Mortgage Loans as of the last
day of the related Due Period (after giving effect to scheduled payments of
principal due during the related Due Period, to the extent received or advanced
and unscheduled collections of principal received during the related Prepayment
Period) and (B) the aggregate Stated Principal Balance of the Mortgage Loans as
of the last day of the related Due Period (after giving effect to scheduled
payments of principal due during the related Due Period, to the extent received
or advanced and unscheduled collections of principal received during the related
Prepayment Period) minus $2,040,579.

                                      -13-
<PAGE>

            "Class P Certificate": Any one of the Class P Certificates executed
and authenticated by the Securities Administrator and delivered by the Trustee,
substantially in the form annexed hereto as Exhibit A-4 and evidencing a Regular
Interest in REMIC II for purposes of the REMIC Provisions.

            "Class R Certificates": Any one of the Class R Certificates executed
and authenticated by the Securities Administrator and delivered by the Trustee,
substantially in the form annexed hereto as Exhibit A-5, and evidencing the
Class R-I Interest and the Class R-II Interest.

            "Class R-I Interest": The uncertificated residual interest in REMIC
I.

            "Class R-II Interest": The uncertificated residual interest in REMIC
II.

            "Closing Date": August 19, 2003.

            "Code": The Internal Revenue Code of 1986 as amended from time to
time.

            "Collection Account": The account or accounts created and
maintained, or caused to be created and maintained, by the Servicer pursuant to
Section 3.08(a), which shall be entitled "The Provident Bank, as Servicer for
Bank One, National Association, as Trustee, in trust for the registered holders
of ACE Securities Corp., Home Equity Loan Trust, Series 2003-HS1, Asset Backed
Pass-Through Certificates." The Collection Account must be an Eligible Account.

            "Commission": The Securities and Exchange Commission.

            "Corporate Trust Office": The principal corporate trust office of
the Trustee which office at the date of the execution of this instrument is
located at 1 Bank One Plaza, Mail Stop IL1- 0126, Chicago, Illinois 60670,
Attention: Global Corporate Trust Services, ACE Securities Corp., 2003-HS1, or
at such other address as the Trustee may designate from time to time by notice
to the Certificateholders, the Depositor, the Master Servicer, the Securities
Administrator and the Servicer. The office of the Securities Administrator,
which for purposes of Certificate transfers and surrender is located at Wells
Fargo Bank Minnesota, National Association, Sixth and Marquette Avenue,
Minneapolis, Minnesota 55479, Attention: Corporate Trust (ACE 2003-HS1), and for
all other purposes is located at Wells Fargo Bank Minnesota, National
Association, P.O. Box 98, Columbia, Maryland 21046, Attention: Corporate Trust
(ACE 2003-HS1) (or for overnight deliveries, at 9062 Old Annapolis Road,
Columbia, Maryland 21046, Attention: Corporate Trust (ACE 2003-HS1)).

            "Corresponding Certificate": With respect to REMIC I Regular
Interest I-LTA1, REMIC I Regular Interest I-LTA2A, REMIC I Regular Interest
I-LTA2B, REMIC I Regular Interest I-LTM1, REMIC I Regular Interest I-LTM2, REMIC
I Regular Interest I-LTM3, REMIC I Regular Interest I-LTM4, REMIC I Regular
Interest I-LTM5, REMIC I Regular Interest I-LTM6 and REMIC I Regular Interest
I-LTP, the Class A-1 Certificates, Class A-2A Certificates, Class A-2B
Certificates, Class M-1 Certificates, Class M-2 Certificates, Class M-3
Certificates, Class M-4 Certificates, Class M-5 Certificates, Class M-6
Certificates and Class P Certificates, respectively.

                                      -14-
<PAGE>

            "Credit Enhancement Percentage": For any Distribution Date, the
percentage equivalent of a fraction, the numerator of which is the sum of the
aggregate Certificate Principal Balances of the Mezzanine Certificates and the
Class CE Certificates, and the denominator of which is the aggregate Stated
Principal Balance of the Mortgage Loans, calculated after taking into account
distributions of principal on the Mortgage Loans and distribution of the
Principal Distribution Amount to the Certificates then entitled to distributions
of principal on such Distribution Date.

            "Credit Risk Management Agreement": The agreement between the Credit
Risk Manager and the Servicer, regarding the loss mitigation and advisory
services to be provided by the Credit Risk Manager.

            "Credit Risk Management Fee": The amount payable to the Credit Risk
Manager on each Distribution Date as compensation for all services rendered by
it in the exercise and performance of any and all powers and duties of the
Credit Risk Manager under the Credit Risk Management Agreement, which amount
shall equal one twelfth of the product of (i) the Credit Risk Management Fee
Rate multiplied by (ii) the Stated Principal Balance of the Mortgage Loans and
any related REO Properties as of the first day of the related Due Period.

            "Credit Risk Management Fee Rate": 0.015% per annum.

            "Credit Risk Manager": The Murrayhill Company, a Colorado
corporation, and its successors and assigns.

            "Custodial Agreement": Shall mean the Custodial Agreement dated as
of August 1, 2003, among the Trustee, the Custodian and the Servicer as such
agreement may be amended or supplemented from time to time, or any other
custodial agreement entered into after the date hereof with respect to any
Mortgage Loan subject to this Agreement.

            "Custodian": Shall mean Wells Fargo or any other custodian appointed
under any custodial agreement entered into after the date of this Agreement.

            "Cut-off Date": With respect to each Mortgage Loan, August 1, 2003.
With respect to all Qualified Substitute Mortgage Loans, their respective dates
of substitution. References herein to the "Cut-off Date," when used with respect
to more than one Mortgage Loan, shall be to the respective Cut-off Dates for
such Mortgage Loans.

            "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 resulting from a Deficient Valuation.

            "Deficiency Amount": (a) For any Distribution Date, the sum of (i)
any shortfall in the sum of the Group II Interest Remittance Amount plus the
amount of the Group I Interest Remittance Amount available therefor, to pay the
Accrued Certificate Interest plus any Interest Carry Forward Amount due

                                      -15-
<PAGE>

on the Class A-2B Certificates, except for (y) any portion thereof payable under
the Class A-2B Policy as a Preference Amount and (z) any portion thereof
relating to the step- up of the Pass-Through Rate of the Class A-2B Certificates
due to the failure of the exercise of the optional termination right pursuant to
Section 10.01 of this Agreement and (ii) if MBIA so elects, in its sole
discretion, the amount by which the aggregate Certificate Principal Balance of
the Class A-2B Certificates (after taking into account all distributions to be
made on such Distribution Date) exceeds the aggregate Stated Principal Balance
of the Group II Mortgage Loans and (b) for the Last Scheduled Distribution Date,
the aggregate Certificate Principal Balance of the Class A-2B Certificates to
the extent unpaid on such date (after taking into account all distributions to
be made on such date).

            "Deficient Valuation": With respect to any Mortgage Loan, a
valuation of the related Mortgaged Property by a court of competent jurisdiction
in an amount less than the then outstanding principal balance of the Mortgage
Loan, which valuation results from a proceeding initiated under the Bankruptcy
Code.

            "Definitive Certificates": As defined in Section 6.01(b).

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

            "Delinquency Percentage": As of the last day of the related Due
Period, the percentage equivalent of a fraction, the numerator of which is the
aggregate Stated Principal Balance of all Mortgage Loans that, as of the last
day of the previous calendar month, are 60 or more days delinquent, are in
foreclosure, have been converted to REO Properties or have been discharged by
reason of bankruptcy, and the denominator of which is the aggregate Stated
Principal Balance of the Mortgage Loans and REO Properties as of the last day of
the previous calendar month.

            "Depositor": ACE Securities Corp., a Delaware corporation, 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(3) 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 Institution": Any depository institution or trust
company, including the Trustee, that (a) is incorporated under the laws of the
United States of America or any State thereof, (b) is subject to supervision and
examination by federal or state banking authorities and (c) has outstanding
unsecured commercial paper or other short-term unsecured debt obligations (or,
in the case of a depository institution that is the principal subsidiary of a
holding company, such holding company has unsecured commercial paper or other
short-term unsecured debt obligations) that are rated at least A-1 by S&P and
P-1 by

                                      -16-
<PAGE>

Moody's (or, if such Rating Agencies are no longer rating the Offered
Certificates, comparable ratings by any other nationally recognized statistical
rating agency then rating the Offered Certificates).

            "Depository Participant": A broker, dealer, bank or other financial
institution 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": With respect to each Distribution Date, shall
mean the 10th day of the calendar month on which such Distribution Date occurs,
or, if such 10th day is not a Business Day, the Business Day immediately
preceding such 10th day.

            "Directly Operate": With respect to any REO Property, the furnishing
or rendering of services to the tenants thereof, the management or operation of
such REO Property, the holding of such REO Property primarily for sale to
customers, the performance of any construction work thereon or any use of such
REO Property in a trade or business conducted by REMIC I other than through an
Independent Contractor; provided, however, that the Servicer, on behalf of the
Trustee, shall not be considered to Directly Operate an REO Property solely
because the Servicer establishes rental terms, chooses tenants, enters into or
renews leases, deals with taxes and insurance, or makes decisions as to repairs
or capital expenditures with respect to such REO Property.

            "Disqualified Organization": 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 Freddie Mac, a majority of its board of directors is not
selected by such governmental unit), (ii) any 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, (v) an "electing
large partnership" and (vi) any other Person so designated by the Trustee based
upon an Opinion of Counsel that the holding of an Ownership Interest in a
Residual Certificate by such Person may cause any Trust REMIC or any Person
having an Ownership Interest in any Class of Certificates (other than such
Person) to incur a liability for any federal tax imposed under the Code that
would not otherwise be imposed but for the Transfer of an Ownership Interest in
a Residual 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 Account": The trust account or accounts created and
maintained by the Securities Administrator pursuant to Section 3.08(b) in the
name of the Securities Administrator for the benefit of the Certificateholders
and designated "Wells Fargo Bank Minnesota, National Association, in trust for
registered holders of ACE Securities Corp. Home Equity Loan Trust, Series
2003-HS1". Funds in the Distribution Account shall be held in trust for the
Certificateholders and MBIA for the uses and purposes set forth in this
Agreement. The Distribution Account must be an Eligible Account.

                                      -17-
<PAGE>

            "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 September 2003.

            "Due Date": With respect to each Distribution Date, the day of the
month on which the Monthly Payment is due on a Mortgage Loan during the related
Due Period, exclusive of any days of grace.

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

            "Eligible Account": Any of (i) an account or accounts maintained
with a Depository Institution, (ii) an account or accounts the deposits in which
are fully insured by the FDIC or (iii) a trust account or accounts maintained
with a federal depository institution or state chartered depository institution
acting in its fiduciary capacity. Eligible Accounts may bear interest.

            "ERISA": The Employee Retirement Income Security Act of 1974, as
amended from time to time.

            "Estate in Real Property": A fee simple estate in a parcel of land.

            "Excess Liquidation Proceeds": To the extent that such amount is not
required by law to be paid to the related mortgagor, the amount, if any, by
which Liquidation Proceeds with respect to a liquidated Mortgage Loan exceed the
sum of (i) the outstanding principal balance of such Mortgage Loan and accrued
but unpaid interest at the related Net Mortgage Rate through the last day of the
month in which the related Liquidation Event occurs, plus (ii) related
liquidation expenses or other amounts to which the Servicer is entitled to be
reimbursed from Liquidation Proceeds with respect to such liquidated Mortgage
Loan pursuant to Section 3.09.

            "Expense Adjusted Mortgage Rate": With respect to any Mortgage Loan
or REO Property, the then applicable Mortgage Rate thereon minus the
Administration Fee Rate.

            "Extraordinary Trust Fund Expense": Any amounts payable or
reimbursable to the Trustee, the Master Servicer, the Securities Administrator,
the Custodian or any director, officer, employee or agent of any such Person
from the Trust Fund pursuant to the terms of this Agreement and any amounts
payable from the Distribution Account in respect of taxes pursuant to Section
11.01(g)(v).

            "Extra Principal Distribution Amount": With respect to any
Distribution Date, the lesser of (i) the Net Monthly Excess Cashflow for such
Distribution Date and (ii) the Overcollateralization Increase Amount for such
Distribution Date.

            "Fannie Mae": Fannie Mae, formerly known as the Federal National
Mortgage Association, or any successor thereto.

                                      -18-
<PAGE>

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

            "Final Recovery Determination": With respect to any defaulted
Mortgage Loan or any REO Property (other than a Mortgage Loan or REO Property
purchased by the related Originator, the Seller or the Terminator pursuant to or
as contemplated by Section 2.03, 3.13(c) or Section 10.01), a determination made
by the Servicer that all Insurance Proceeds, Liquidation Proceeds and other
payments or recoveries which the Servicer, in its reasonable good faith
judgment, expects to be finally recoverable in respect thereof have been so
recovered, which determination shall be evidenced by a certificate of a
Servicing Officer delivered to the Master Servicer and maintained in its
records.

            "Fiscal Agent": As defined in the Class A-2B Policy.

            "Fitch": Fitch Ratings or any successor in interest.

            "Freddie Mac": Freddie Mac, formerly known as the Federal Home Loan
Mortgage Corporation, or any successor thereto.

            "Gross Margin": With respect to each Adjustable Rate Mortgage Loan,
the fixed percentage set forth in the related Mortgage Note that is added to the
Index on each Adjustment Date in accordance with the terms of the related
Mortgage Note used to determine the Mortgage Rate for such Adjustable Rate
Mortgage Loan.

            "Group I Interest Remittance Amount": With respect to any
Distribution Date is that portion of the Available Distribution Amount for such
Distribution Date that represents interest received or advanced on the Group I
Mortgage Loans (after taking into account amounts payable or reimbursable to the
Trustee, the Custodian, the Securities Administrator, the Master Servicer or the
Servicer pursuant to this Agreement or the Custodial Agreement).

            "Group I Mortgage Loans": Those Mortgage Loans identified on the
Mortgage Loan Schedule as Group I Mortgage Loans.

            "Group I Principal Distribution Amount": With respect to any
Distribution Date will be the sum of (i) the principal portion of all Monthly
Payments on the Group I Mortgage Loans due during the related Due Period,
whether or not received on or prior to the related Determination Date; (ii) the
principal portion of all proceeds received in respect of the repurchase of a
Group I Mortgage Loan or, in the case of a substitution, certain amounts
representing a principal adjustment, during the related Prepayment Period
pursuant to or as contemplated by Section 2.03, Section 3.13(c) and Section
10.01; (iii) the principal portion of all other unscheduled collections,
including Insurance Proceeds, Liquidation Proceeds and all Principal Prepayments
in full and in part, received during the related Prepayment Period, to the
extent applied as recoveries of principal on the Group I Mortgage Loans, net in
each case of payments or reimbursements to the Trustee, the Custodian, the
Master Servicer, the Securities Administrator and the Servicer and (iv) the
Class A-1 Allocation Percentage of the amount of any Overcollateralization
Increase

                                      -19-
<PAGE>

Amount for such Distribution Date minus (v) the Class A-1 Allocation Percentage
of the amount of any Overcollateralization Reduction Amount for such
Distribution Date.

            "Group I Principal Remittance Amount": With respect to any
Distribution Date will be the sum of the amounts described in clauses (i)
through (iii) of the definition of Group I Principal Distribution Amount.

            "Group II Interest Remittance Amount": With respect to any
Distribution Date is that portion of the Available Distribution Amount for such
Distribution Date that represents interest received or advanced on the Group II
Mortgage Loans (after taking into account amounts payable or reimbursable to the
Trustee, the Custodian, the Securities Administrator, the Master Servicer or the
Servicer pursuant to this Agreement or the Custodial Agreement).

            "Group II Mortgage Loans": Those Mortgage Loans identified on the
Mortgage Loan Schedule as Group II Mortgage Loans.

            "Group II Principal Distribution Amount": With respect to any
Distribution Date will be the sum of (i) the principal portion of all Monthly
Payments on the Group II Mortgage Loans due during the related Due Period,
whether or not received on or prior to the related Determination Date; (ii) the
principal portion of all proceeds received in respect of the repurchase of a
Group II Mortgage Loan or, in the case of a substitution, certain amounts
representing a principal adjustment, during the related Prepayment Period
pursuant to or as contemplated by Section 2.03, Section 3.13(c) and Section
10.01; (iii) the principal portion of all other unscheduled collections,
including Insurance Proceeds, Liquidation Proceeds and all Principal Prepayments
in full and in part, received during the related Prepayment Period, to the
extent applied as recoveries of principal on the Group II Mortgage Loans, net in
each case of payments or reimbursements to the Trustee, the Custodian, the
Master Servicer, the Securities Administrator and the Servicer and (iv) the
Class A-2 Allocation Percentage of the amount of any Overcollateralization
Increase Amount for such Distribution Date minus (v) the Class A-2 Allocation
Percentage of the amount of any Overcollateralization Reduction Amount for such
Distribution Date.

            "Group II Principal Remittance Amount": With respect to any
Distribution Date will be the sum of the amounts described in clauses (i)
through (iii) of the definition of Group II Principal Distribution Amount.

            "Independent": When used with respect to any specified Person, any
such Person who (a) is in fact independent of the Depositor, the Master
Servicer, the Securities Administrator, the Servicer, the Seller, the Originator
and their respective Affiliates, (b) does not have any direct financial interest
in or any material indirect financial interest in the Depositor, the Master
Servicer, the Securities Administrator, the Servicer, the Seller, the Originator
or any Affiliate thereof, and (c) is not connected with the Depositor, the
Master Servicer, the Securities Administrator, the Servicer, the Seller, the
Originator or any Affiliate thereof as an officer, employee, promoter,
underwriter, trustee, partner, director or Person performing similar functions;
provided, however, that a Person shall not fail to be Independent of the
Depositor, the Master Servicer, the Securities Administrator, the Servicer, the
Seller, the Originator or any Affiliate thereof merely

                                      -20-
<PAGE>

because such Person is the beneficial owner of 1% or less of any class of
securities issued by the Depositor, the Master Servicer, the Securities
Administrator, the Servicer, the Seller, the Originator or any Affiliate
thereof, as the case may be.

            "Independent Contractor": Either (i) any Person (other than the
Servicer) that would be an "independent contractor" with respect to REMIC I
within the meaning of Section 856(d)(3) of the Code if REMIC I were a real
estate investment trust (except that the ownership tests set forth in that
section shall be considered to be met by any Person that owns, directly or
indirectly, 35% or more of any Class of Certificates), so long as REMIC I does
not receive or derive any income from such Person and provided that the
relationship between such Person and REMIC I is at arm's length, all within the
meaning of Treasury Regulation Section 1.856-4(b)(5), or (ii) any other Person
(including the Servicer) if the Trustee has received an Opinion of Counsel to
the effect that the taking of any action in respect of any REO Property by such
Person, subject to any conditions therein specified, that is otherwise herein
contemplated to be taken by an Independent Contractor will not cause such REO
Property to cease to qualify as "foreclosure property" within the meaning of
Section 860G(a)(8) of the Code (determined without regard to the exception
applicable for purposes of Section 860D(a) of the Code), or cause any income
realized in respect of such REO Property to fail to qualify as Rents from Real
Property.

            "Index": With respect to each Adjustable Rate Mortgage Loan and each
related Adjustment Date, the average of the interbank offered rates for
six-month United States dollar deposits in the London market as published in The
Wall Street Journal and as most recently available either (a) as of the first
Business Day 45 days prior to such Adjustment Date or (b) as of the first
Business Day of the month preceding the month of such Adjustment Date, as
specified in the related Mortgage Note.

            "Insurance Agreement": The Insurance Agreement, dated as of August
1, 2003, among MBIA, the Depositor, the Trustee, the Seller and the Securities
Administrator.

            "Insurance Proceeds": Proceeds of any title policy, hazard policy or
other insurance policy covering a Mortgage Loan, to the extent such proceeds are
not to be applied to the restoration of the related Mortgaged Property or
released to the Mortgagor in accordance with Accepted Servicing Practices,
subject to the terms and conditions of the related Mortgage Note and Mortgage.

            "Interest Accrual Period": With respect to any Distribution Date and
the Class A Certificates and the Mezzanine Certificates, the period commencing
on the Distribution Date of the month immediately preceding the month in which
such Distribution Date occurs (or, in the case of the first Distribution Date,
commencing on the Closing Date) and ending on the day preceding such
Distribution Date. With respect to any Distribution Date and the Class CE
Certificates and the REMIC I Regular Interests, the one-month period ending on
the last day of the calendar month immediately preceding the month in which such
Distribution Date occurs.

            "Interest Carry Forward Amount": With respect to any Distribution
Date and the Class A Certificates and the Mezzanine Certificates, the sum of (i)
the amount, if any, by which (a) the Interest Distribution Amount for such Class
of Certificates as of the immediately preceding Distribution Date

                                      -21-
<PAGE>

exceeded (b) the actual amount distributed on such Class of Certificates in
respect of interest on such immediately preceding Distribution Date and (ii) the
amount of any Interest Carry Forward Amount for such Class of Certificates
remaining unpaid from the previous Distribution Date, plus accrued interest on
such sum calculated at the related Pass-Through Rate for the most recently ended
Interest Accrual Period.

            "Interest Determination Date": With respect to the Class A
Certificates, the Mezzanine Certificates, REMIC I Regular Interest I-LTA1, REMIC
I Regular Interest I-LTA2A, REMIC I Regular Interest I-LTA2B, REMIC I Regular
Interest I-LTM1, REMIC I Regular Interest I-LTM2, REMIC I Regular Interest
I-LTM3, REMIC I Regular Interest I-LTM4, REMIC I Regular Interest I-LTM5, REMIC
I Regular Interest I-LTM6 and any Interest Accrual Period therefor, the second
London Business Day preceding the commencement of such Interest Accrual Period.

            "Interest Distribution Amount": With respect to any Distribution
Date and any Class A Certificates, any Mezzanine Certificates and any Class CE
Certificates, the aggregate Accrued Certificate Interest on the Certificates of
such Class for such Distribution Date.

            "Interest Remittance Amount": With respect to any Distribution Date,
the sum of the Group I Interest Remittance Amount and the Group II Interest
Remittance Amount.

            "Late Collections": With respect to any Mortgage Loan and any Due
Period, all amounts received subsequent to the Determination Date immediately
following such Due Period with respect to such Mortgage Loan, whether as late
payments of Monthly Payments or as Insurance Proceeds, Liquidation Proceeds or
otherwise, which represent late payments or collections of principal and/or
interest due (without regard to any acceleration of payments under the related
Mortgage and Mortgage Note) but delinquent for such Due Period and not
previously recovered.

            "Last Scheduled Distribution Date": June 25, 2033.

            "Late Payment Rate": As defined in the Insurance Agreement.

            "Liquidation Event": With respect to any Mortgage Loan, any of the
following events: (i) such Mortgage Loan is paid in full; (ii) a Final Recovery
Determination is made as to such Mortgage Loan or (iii) such Mortgage Loan is
removed from REMIC I by reason of its being purchased, sold or replaced pursuant
to or as contemplated by Section 2.03, Section 3.13(c) or Section 10.01. With
respect to any REO Property, either of the following events: (i) a Final
Recovery Determination is made as to such REO Property or (ii) such REO Property
is removed from REMIC I by reason of its being purchased pursuant to Section
10.01.

            "Liquidation Proceeds": The amount (other than Insurance Proceeds or
amounts received in respect of the rental of any REO Property prior to REO
Disposition) received by the Servicer in connection with (i) the taking of all
or a part of a Mortgaged Property by exercise of the power of eminent domain or
condemnation, (ii) the liquidation of a defaulted Mortgage Loan through a
trustee's sale,

                                      -22-
<PAGE>

foreclosure sale or otherwise, or (iii) the repurchase, substitution or sale of
a Mortgage Loan or an REO Property pursuant to or as contemplated by Section
2.03, Section 3.13(c), Section 3.21 or Section 10.01.

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

            "London Business Day": Any day on which banks in the Cities of
London and New York are open and conducting transactions in United States
dollars.

            "Loss Severity Percentage": With respect to any Distribution Date,
the percentage equivalent of a fraction, the numerator of which is the amount of
Realized Losses incurred on a Mortgage Loan and the denominator of which is the
principal balance of such Mortgage Loan immediately prior to the liquidation of
such Mortgage Loan.

            "Marker Rate": With respect to the Class CE Certificates and any
Distribution Date, a per annum rate equal to two (2) times the weighted average
of the REMIC I Remittance Rate for each of REMIC I Regular Interest I-LTA1,
REMIC I Regular Interest I-LTA2A, REMIC I Regular Interest I-LTA2B, REMIC I
Regular Interest I-LTM1, REMIC I Regular Interest I-LTM2, REMIC I Regular
Interest I-LTM3, REMIC I Regular Interest I-LTM4, REMIC I Regular Interest
I-LTM5, REMIC I Regular Interest I-LTM6 and REMIC I Regular Interest I-LTZZ,
with the rate on each such REMIC I Regular Interest (other than REMIC I Regular
Interest I-LTZZ) subject to a cap equal to the lesser of (i) the related
One-Month LIBOR Pass-Through Rate and (ii) the Net WAC Pass-Through Rate for the
purpose of this calculation for such Distribution Date and with the rate on
REMIC I Regular Interest I-LTZZ subject to a cap of zero for the purpose of this
calculation; provided however, each such cap shall be multiplied by a fraction
the numerator of which is the actual number of days in the related Interest
Accrual Period and the denominator of which is 30.

            "Master Servicer": As of the Closing Date, Wells Fargo Bank
Minnesota, National Association and thereafter, its respective successors in
interest who meet the qualifications of this Agreement. The Master Servicer and
the Securities Administrator shall at all times be the same Person.

            "Master Servicer Certification": A written certification covering
servicing of the Mortgage Loans by the Servicer and signed by an officer of the
Master Servicer that complies with (i) the Sarbanes-Oxley Act of 2002, as
amended from time to time, and (ii) the February 21, 2003 Statement by the Staff
of the Division of Corporation Finance of the Securities and Exchange Commission
Regarding Compliance by Asset-Backed Issuers with Exchange Act Rules 13a-14 and
15d-14, as in effect from time to time; provided that if, after the Closing Date
(a) the Sarbanes-Oxley Act of 2002 is amended, (b) the Statement referred to in
clause (ii) is modified or superceded by any subsequent statement, rule or
regulation of the Securities and Exchange Commission or any statement of a
division thereof, or (c) any future releases, rules and regulations are
published by the Securities and Exchange Commission from time to time pursuant
to the Sarbanes-Oxley Act of 2002, which in any such case affects the form or
substance of the required certification and results in the required
certification being, in the reasonable judgment of the Master

                                      -23-
<PAGE>

Servicer, materially more onerous than the form of the required certification as
of the Closing Date, the Master Servicer Certification shall be as agreed to by
the Master Servicer, the Depositor and the Seller following a negotiation in
good faith to determine how to comply with any such new requirements.

            "Master Servicer Event of Default": One or more of the events
described in Section 8.01(b).

            "Master Servicer Fee Rate": 0.0175% per annum.

            "Master Servicing Fee": With respect to each Mortgage Loan and for
any calendar month, an amount equal to one twelfth of the product of the Master
Servicer Fee Rate multiplied by the Scheduled Principal Balance of the Mortgage
Loans as of the Due Date in the preceding calendar month.

            "Maximum I-LTZZ Uncertificated Interest Deferral Amount": With
respect to any Distribution Date, the excess of (i) accrued interest at the
REMIC I Remittance Rate applicable to REMIC I Regular Interest I-LTZZ for such
Distribution Date on a balance equal to the Uncertificated Balance of REMIC I
Regular Interest I-LTZZ minus the REMIC I Overcollateralization Amount, in each
case for such Distribution Date, over (ii) Uncertificated Interest on REMIC I
Regular Interest I-LTA1, REMIC I Regular Interest I-LTA2A, REMIC I Regular
Interest I-LTA2B, REMIC I Regular Interest I-LTM1, REMIC I Regular Interest
I-LTM2, REMIC I Regular Interest I-LTM3, REMIC I Regular Interest I-LTM4, REMIC
I Regular Interest I-LTM5 and REMIC I Regular Interest I-LTM6 for such
Distribution Date, with the rate on each such REMIC I Regular Interest subject
to a cap equal to the lesser of (i) the related One-Month LIBOR Pass-Through
Rate and (ii) the Net WAC Pass-Through Rate for the purpose of this calculation
for such Distribution Date; provided however, each such cap shall be multiplied
by a fraction the numerator of which is the actual number of days in the related
Interest Accrual Period and the denominator of which is 30.

            "Maximum Mortgage Rate": With respect to each Adjustable Rate
Mortgage Loan, the percentage set forth in the related Mortgage Note as the
maximum Mortgage Rate thereunder.

            "MBIA": MBIA Insurance Corporation, a subsidiary of MBIA Inc., a
corporation organized and created under the laws of the State of New York, or
any successor thereto.

            "MBIA Contact Person": The officer designated by the Master Servicer
to provide information to MBIA pursuant to Section 5.07(i).

            "MBIA Default": As defined in Section 5.07(l).

            "MBIA Premium Amount": With respect to the Class A-2B Policy and
each Distribution Date, an amount equal to the product of the MBIA Premium Rate
and the Certificate Principal Balance of the Class A-2B Certificates immediately
prior to such Distribution Date.

                                      -24-
<PAGE>

            "MBIA Premium Rate": A percentage equal to one twelfth (1/12) of the
"premium percentage" set forth in the Commitment Letter, dated August 18, 2003,
between MBIA and Deutsche Bank Securities Inc.

            "MBIA Reimbursement Amount": Shall mean the sum of (a) the aggregate
unreimbursed amount of any payments made by MBIA under the Class A-2B Policy,
together with interest on such amount from the date of payment by MBIA until
paid in full at a rate of interest equal to the Late Payment Rate, (b) all costs
and expenses of MBIA in connection with any action, proceeding or investigation
affecting the Trust Fund or the rights or obligations of MBIA under this
Agreement or under the Class A-2B Policy, including any judgment or settlement
entered into affecting MBIA or MBIA's interests, together with interest thereon
at a rate equal to the Late Payment Rate and (c) any other amounts owed to MBIA
under this Agreement or the Insurance Agreement, together with interest thereon
at a rate equal to the Late Payment Rate.

            "MERS": Mortgage Electronic Registration Systems, Inc., a
corporation organized and existing under the laws of the State of Delaware, or
any successor thereto.

            "MERS(R)System": The system of recording transfers of mortgages
electronically maintained by MERS.

            "Mezzanine Certificate": Any Class M-1, Class M-2, Class M-3, Class
M-4, Class M-5 or Class M-6 Certificate.

            "MGIC": Mortgage Guaranty Insurance Corporation, a monoline private
insurance company organized and created under the laws of the State of
Wisconsin, or its successor in interest.

            "MGIC Fee": With respect to each MGIC PMI Mortgage Loan and each
Distribution Date, an amount equal to one twelfth of the product of the MGIC Fee
Rate multiplied by the Scheduled Principal Balance of such MGIC PMI Mortgage
Loan as of the Due Date in the preceding calendar month.

            "MGIC Fee Rate": With respect to each MGIC PMI Mortgage Loan, the
per annum percentage set forth on the Mortgage Loan Schedule.

            "MGIC PMI Mortgage Loans": Each Mortgage Loan insured by MGIC and
identified on Schedule 3 attached hereto.

            "MGIC PMI Policy": The Master Primary Mortgage Insurance Policy (No.
12-670-4- 3345) with respect to the MGIC PMI Mortgage Loans and all endorsements
thereto dated the Closing Date, issued by MGIC.

            "MIN": The Mortgage Identification Number for Mortgage Loans
registered with MERS on the MERS(R)System.

                                      -25-
<PAGE>

            "Minimum Mortgage Rate": With respect to each Adjustable Rate
Mortgage Loan, the percentage set forth in the related Mortgage Note as the
minimum Mortgage Rate thereunder.

            "MOM Loan": With respect to any Mortgage Loan, MERS acting as the
mortgagee of such Mortgage Loan, solely as nominee for the originator of such
Mortgage Loan and its successors and assigns, at the origination thereof.

            "Monthly Payment": With respect to any Mortgage Loan, the scheduled
monthly payment of principal and interest on such Mortgage Loan which is payable
by the related Mortgagor from time to time under the related Mortgage Note,
determined: (a) after giving effect to (i) any Deficient Valuation and/or Debt
Service Reduction with respect to such Mortgage Loan and (ii) any reduction in
the amount of interest collectible from the related Mortgagor pursuant to the
Relief Act or similar state laws; (b) without giving effect to any extension
granted or agreed to by the Servicer pursuant to Section 3.01; and (c) on the
assumption that all other amounts, if any, due under such Mortgage Loan are paid
when due.

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

            "Mortgage": The mortgage, deed of trust or other instrument creating
a first lien on, or first priority security interest in, a Mortgaged Property
securing a Mortgage Note.

            "Mortgage File": The Mortgage Loan Documents pertaining to a
particular Mortgage Loan.

            "Mortgage Loan": Each mortgage loan transferred and assigned to the
Trustee and the Mortgage Loan Documents for which have been delivered to the
Custodian pursuant to Section 2.01 of this Agreement and pursuant to the
Custodial Agreement, as held from time to time as a part of the Trust Fund, the
Mortgage Loans so held being identified in the Mortgage Loan Schedule.

            "Mortgage Loan Documents": The documents evidencing or relating to
each Mortgage Loan delivered to the Custodian under the Custodial Agreement on
behalf of the Trustee.

            "Mortgage Loan Purchase Agreement": Shall mean the Mortgage Loan
Purchase Agreement dated as of August 19, 2003, between the Depositor and the
Seller.

            "Mortgage Loan Schedule": As of any date, the list of Mortgage Loans
included in REMIC I on such date, separately identifying the Group I Mortgage
Loans and the Group II Mortgage Loans, attached hereto as Schedule 1. The
Depositor shall deliver or cause the delivery of the initial Mortgage Loan
Schedule to the Servicer, the Master Servicer, the Custodian, MBIA and the
Trustee on the Closing Date. The Mortgage Loan Schedule shall set forth the
following information with respect to each Mortgage Loan:

            (i) the Mortgage Loan identifying number;

            (ii) the Mortgagor's first and last name;

                                      -26-
<PAGE>

            (iii) the street address of the Mortgaged Property including the
state and zip code;

            (iv) a code indicating whether the Mortgaged Property is
owner-occupied;

            (v) the type of Residential Dwelling constituting the Mortgaged
Property;

            (vi) the original months to maturity;

            (vii) the original date of the Mortgage Loan and the remaining
months to maturity from the Cut-off Date, based on the original amortization
schedule;

            (viii) the Loan-to-Value Ratio at origination;

            (ix) the Mortgage Rate in effect immediately following the Cut-off
Date;

            (x) the date on which the first Monthly Payment was due on the
Mortgage Loan;

            (xi) the stated maturity date;

            (xii) the amount of the Monthly Payment at origination;

            (xiii) the amount of the Monthly Payment as of the Cut-off Date;

            (xiv) the last Due Date on which a Monthly Payment was actually
applied to the unpaid Stated Principal Balance;

            (xv) the original principal amount of the Mortgage Loan;

            (xvi) the Stated Principal Balance of the Mortgage Loan as of the
close of business on the Cut-off Date;

            (xvii) with respect to each Adjustable Rate Mortgage Loan, the first
Adjustment Date;

            (xviii) with respect to each Adjustable Rate Mortgage Loan, the
Gross Margin;

            (xix) a code indicating the purpose of the loan (i.e., purchase
financing, rate/term refinancing, cash-out refinancing);

            (xx) with respect to each Adjustable Rate Mortgage Loan, the Maximum
Mortgage Rate under the terms of the Mortgage Note;

            (xxi) with respect to each Adjustable Rate Mortgage Loan, the
Minimum Mortgage Rate under the terms of the Mortgage Note;

                                      -27-
<PAGE>

            (xxii) the Mortgage Rate at origination;

            (xxiii) with respect to each Adjustable Rate Mortgage Loan, the
Periodic Rate Cap;

            (xxiv) with respect to each Adjustable Rate Mortgage Loan, the first
Adjustment Date immediately following the Cut-off Date;

            (xxv) with respect to each Adjustable Rate Mortgage Loan, the Index;

            (xxvi) the date on which the first Monthly Payment was due on the
Mortgage Loan and, if such date is not consistent with the Due Date currently in
effect, such Due Date;

            (xxvii) a code indicating whether the Mortgage Loan is an Adjustable
Rate Mortgage Loan or a fixed rate Mortgage Loan;

            (xxviii) a code indicating the documentation style (i.e., full,
stated or limited);

            (xxix) a code indicating if the Mortgage Loan is subject to a
primary insurance policy or lender paid mortgage insurance policy and the name
of the insurer;

            (xxx) the Appraised Value of the Mortgaged Property;

            (xxxi) the sale price of the Mortgaged Property, if applicable;

            (xxxii) a code indicating whether the Mortgage Loan is subject to a
Prepayment Charge, the term of such Prepayment Charge and the amount of such
Prepayment Charge;

            (xxxiii) the product type (e.g., 2/28, 15 year fixed, 30 year fixed,
15/30 balloon, etc.);

            (xxxiv) the Mortgagor's debt to income ratio;

            (xxxv) the Servicer;

            (xxxvi) whether such Mortgage Loan is a MGIC PMI Mortgage Loan; and

            (xxxvii) the MGIC Fee Rate with respect to each MGIC PMI Mortgage
Loan.

            The Mortgage Loan Schedule shall set forth the following information
with respect to the Mortgage Loans in the aggregate as of the Cut-off Date: (1)
the number of Mortgage Loans; (2) the current principal balance of the Mortgage
Loans; (3) the weighted average Mortgage Rate of the Mortgage Loans; and (4) the
weighted average maturity of the Mortgage Loans. The Mortgage Loan Schedule
shall be amended from time to time by the Depositor in accordance with the
provisions of this Agreement. With

                                      -28-
<PAGE>

respect to any Qualified Substitute Mortgage Loan, the Cut-off Date shall refer
to the related Cut-off Date for such Mortgage Loan, determined in accordance
with the definition of Cut-off Date herein.

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

            "Mortgage Rate": With respect to each Mortgage Loan, the annual rate
at which interest accrues on such Mortgage Loan from time to time in accordance
with the provisions of the related Mortgage Note, which rate with respect to
each Adjustable Rate Mortgage Loan (A) as of any date of determination until the
first Adjustment Date following the Cut-off Date shall be the rate set forth in
the Mortgage Loan Schedule as the Mortgage Rate in effect immediately following
the Cut-off Date and (B) as of any date of determination thereafter shall be the
rate as adjusted on the most recent Adjustment Date equal to the sum, rounded to
the nearest 0.125% as provided in the Mortgage Note, of the Index, as most
recently available as of a date prior to the Adjustment Date as set forth in the
related Mortgage Note, plus the related Gross Margin; provided that the Mortgage
Rate on such Adjustable Rate Mortgage Loan on any Adjustment Date shall never be
more than the lesser of (i) the sum of the Mortgage Rate in effect immediately
prior to the Adjustment Date plus the related Periodic Rate Cap, if any, and
(ii) the related Maximum Mortgage Rate, and shall never be less than the greater
of (i) the Mortgage Rate in effect immediately prior to the Adjustment Date less
the Periodic Rate Cap, if any, and (ii) the related Minimum Mortgage Rate. With
respect to each Mortgage Loan that becomes an REO Property, as of any date of
determination, the annual rate determined in accordance with the immediately
preceding sentence as of the date such Mortgage Loan became an REO Property.

            "Mortgaged Property": The underlying property securing a Mortgage
Loan, including any REO Property, consisting of an Estate in Real Property
improved by a Residential Dwelling.

            "Mortgagor": The obligor on a Mortgage Note.

            "Net Monthly Excess Cashflow": With respect to any Distribution
Date, the sum of (i) any Overcollateralization Reduction Amount for such
Distribution Date and (ii) the excess of (x) the Available Distribution Amount
for such Distribution Date over (y) the sum for such Distribution Date of (A)
the aggregate Senior Interest Distribution Amounts payable to the holders of the
Class A Certificates, (B) the aggregate Interest Distribution Amounts payable to
the holders of the Mezzanine Certificates, (C) the MBIA Premium Amount and (D)
the Principal Remittance Amount.

            "Net Mortgage Rate": With respect to any Mortgage Loan (or the
related REO Property) as of any date of determination, a per annum rate of
interest equal to the then applicable Mortgage Rate for such Mortgage Loan minus
the Administration Fee Rate.

            "Net WAC Pass-Through Rate": With respect to the Class A-1
Certificates and any Distribution Date, a rate per annum equal to the product of
(x) the weighted average of the Expense Adjusted Mortgage Rates on the then
outstanding Group I Mortgage Loans, weighted based on their Stated Principal
Balances as of the first day of the calendar month preceding the month in which
the

                                      -29-
<PAGE>

Distribution Date occurs and (y) a fraction, the numerator of which is 30 and
the denominator of which is the actual number of days elapsed in the related
Interest Accrual Period. For federal income tax purposes, the economic
equivalent of such rate shall be expressed as the weighted average of the REMIC
I Remittance Rate on REMIC I Regular Interest I-LT1B, weighted on the basis of
the Uncertificated Balance of such REMIC I Regular Interest.

            With respect to the Class A-2A Certificates and any Distribution
Date, a rate per annum equal to the product of (x) the weighted average of the
Expense Adjusted Mortgage Rates on the then outstanding Group II Mortgage Loans,
weighted based on their Stated Principal Balances as of the first day of the
calendar month preceding the month in which the Distribution Date occurs and (y)
a fraction, the numerator of which is 30 and the denominator of which is the
actual number of days elapsed in the related Interest Accrual Period. For
federal income tax purposes, the economic equivalent of such rate shall be
expressed as the weighted average of the REMIC I Remittance Rate on REMIC I
Regular Interest I-LT2B, weighted on the basis of the Uncertificated Balance of
such REMIC I Regular Interest.

            With respect to the Class A-2B Certificates and any Distribution
Date, a rate per annum equal to the product of (x) (i) the weighted average of
the Expense Adjusted Mortgage Rates on the then outstanding Group II Mortgage
Loans, weighted based on their Stated Principal Balances as of the first day of
the calendar month preceding the month in which the Distribution Date occurs
minus (ii) the MBIA Premium Rate for such Distribution Date multiplied by a
fraction, the numerator of which is the Certificate Principal Balance of the
Class A-2B Certificates prior to such Distribution Date and the denominator of
which is the sum of the Certificate Principal Balances of the Class A-2B
Certificates and the Mezzanine Certificates prior to such Distribution Date and
(y) a fraction, the numerator of which is 30 and the denominator of which is the
actual number of days elapsed in the related Interest Accrual Period. For
federal income tax purposes, the economic equivalent of such rate shall be
expressed as the weighted average of the REMIC I Remittance Rate on REMIC I
Regular Interest I-LT2B, weighted on the basis of the Uncertificated Balance of
such REMIC I Regular Interest.

            With respect to the Mezzanine Certificates and any Distribution
Date, a rate per annum equal to the product of (x) the weighted average of the
Expense Adjusted Mortgage Rates on the then outstanding Mortgage Loans, weighted
based on their Stated Principal Balances as of the first day of the calendar
month preceding the month in which the Distribution Date occurs and (y) a
fraction, the numerator of which is 30 and the denominator of which is the
actual number of days elapsed in the related Interest Accrual Period. For
federal income tax purposes, the economic equivalent of such rate shall be
expressed as the weighted average of the REMIC I Remittance Rates on (a) REMIC I
Regular Interest I-LT1A, subject to a cap and a floor equal to the weighted
average of the Expense Adjusted Net Mortgage Rates of the Group I Mortgage Loans
and (b) REMIC I Regular Interest I-LT2A, subject to a cap and a floor equal to
the weighted average of the Expense Adjusted Net Mortgage Rates of the Group II
Mortgage Loans, weighted on the basis of the Uncertificated Balance of each such
REMIC I Regular Interest.

            "Net WAC Rate Carryover Amount": With respect to the Class A
Certificates and the Mezzanine Certificates and any Distribution Date on which
the Pass-Through Rate is limited to the applicable Net WAC Pass-Through Rate, an
amount equal to the sum of (i) the excess of (x) the amount

                                      -30-
<PAGE>

of interest the Class A Certificates or any Class of Mezzanine Certificates
would have been entitled to receive on such Distribution Date if the applicable
Net WAC Pass-Through Rate would not have been applicable to such Certificates on
such Distribution Date over (y) the amount of interest paid on such Distribution
Date at the applicable Net WAC Pass-Through Rate plus (ii) the related Net WAC
Rate Carryover Amount for the previous Distribution Date not previously
distributed together with interest thereon at a rate equal to the Pass-Through
Rate for such class of Certificates for the most recently ended Interest Accrual
Period.

            "New Lease": Any lease of REO Property entered into on behalf of
REMIC I, including any lease renewed or extended on behalf of REMIC I, if REMIC
I has the right to renegotiate the terms of such lease.

            "Nonrecoverable P&I Advance": Any P&I Advance previously made or
proposed to be made in respect of a Mortgage Loan or REO Property that, in the
good faith business judgment of the Servicer or a successor Servicer (including
the Trustee or the Master Servicer) will not or, in the case of a proposed P&I
Advance, would not be ultimately recoverable from related Late Collections,
Insurance Proceeds or Liquidation Proceeds on such Mortgage Loan or REO Property
as provided herein.

            "Nonrecoverable Servicing Advance": Any Servicing Advance previously
made or proposed to be made in respect of a Mortgage Loan or REO Property that,
in the good faith business judgment of the Servicer, will not or, in the case of
a proposed Servicing Advance, would not be ultimately recoverable from related
Late Collections, Insurance Proceeds or Liquidation Proceeds on such Mortgage
Loan or REO Property as provided herein.

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

            "Notional Amount": With respect to the Class CE Certificates and any
Distribution Date, the Uncertificated Balance of the REMIC I Regular Interests
for such Distribution Date.

            "Offered Certificates" shall mean the Class A Certificates and the
Mezzanine Certificates, collectively.

            "Officer's Certificate": A certificate signed by the Chairman of the
Board, the Vice Chairman of the Board, the President or a vice president
(however denominated), or by the Treasurer, the Secretary, or one of the
assistant treasurers or assistant secretaries of the Servicer, the Seller or the
Depositor, as applicable.

            "One-Month LIBOR": With respect to the Class A Certificates, the
Mezzanine Certificates, REMIC I Regular Interest I-LTA1, REMIC I Regular
Interest I-LTA2A, REMIC I Regular Interest I-LTA2B, REMIC I Regular Interest
I-LTM1, REMIC I Regular Interest I-LTM2, REMIC I Regular Interest I-LTM3, REMIC
I Regular Interest I-LTM4, REMIC I Regular Interest I-LTM5 and REMIC I Regular
Interest I-LTM6 and any Interest Accrual Period therefor, the rate determined by
the Securities Administrator on the related Interest Determination Date on the
basis of the offered rate for one-month

                                      -31-
<PAGE>

U.S. dollar deposits, as such rate appears on Telerate Page 3750 as of 11:00
a.m. (London time) on such Interest Determination Date; provided that if such
rate does not appear on Telerate Page 3750, the rate for such date will be
determined on the basis of the offered rates of the Reference Banks for
one-month U.S. dollar deposits, as of 11:00 a.m. (London time) on such Interest
Determination Date. In such event, the Securities Administrator will request the
principal London office of each of the Reference Banks to provide a quotation of
its rate. If on such Interest Determination Date, two or more Reference Banks
provide such offered quotations, One-Month LIBOR for the related Interest
Accrual Period shall be the arithmetic mean of such offered quotations (rounded
upwards if necessary to the nearest whole multiple of 1/16). If on such Interest
Determination Date, fewer than two Reference Banks provide such offered
quotations, One-Month LIBOR for the related Interest Accrual Period shall be the
higher of (i) LIBOR as determined on the previous Interest Determination Date
and (ii) the Reserve Interest Rate. Notwithstanding the foregoing, if, under the
priorities described above, LIBOR for an Interest Determination Date would be
based on LIBOR for the previous Interest Determination Date for the third
consecutive Interest Determination Date, the Securities Administrator shall
select an alternative comparable index (over which the Securities Administrator
has no control), used for determining one-month Eurodollar lending rates that is
calculated and published (or otherwise made available) by an independent party.
The establishment of One-Month LIBOR by the Securities Administrator and the
Securities Administrator's subsequent calculation of the One-Month LIBOR
Pass-Through Rates for the relevant Interest Accrual Period, shall, in the
absence of manifest error, be final and binding.

            "One-Month LIBOR Pass-Through Rate": With respect to the Class A-1
Certificates and, for purposes of the definition of "Marker Rate", REMIC I
Regular Interest I-LTA1, a per annum rate equal to One-Month LIBOR plus the
related Certificate Margin.

            With respect to the Class A-2A Certificates and, for purposes of the
definition of "Marker Rate", REMIC I Regular Interest I-LTA2A, a per annum rate
equal to One-Month LIBOR plus the related Certificate Margin.

            With respect to the Class A-2B Certificates and, for purposes of the
definition of "Marker Rate", REMIC I Regular Interest I-LTA2B, a per annum rate
equal to One-Month LIBOR plus the related Certificate Margin.

            With respect to the Class M-1 Certificates and, for purposes of the
definition of "Marker Rate", REMIC I Regular Interest I-LTM1, a per annum rate
equal to One-Month LIBOR plus the related Certificate Margin.

            With respect to the Class M-2 Certificates and, for purposes of the
definition of "Marker Rate", REMIC I Regular Interest I-LTM2, a per annum rate
equal to One-Month LIBOR plus the related Certificate Margin.

            With respect to the Class M-3 Certificates and, for purposes of the
definition of "Marker Rate", REMIC I Regular Interest I-LTM3, a per annum rate
equal to One-Month LIBOR plus the related Certificate Margin.

                                      -32-
<PAGE>

            With respect to the Class M-4 Certificates and, for purposes of the
definition of "Marker Rate", REMIC I Regular Interest I-LTM4, a per annum rate
equal to One-Month LIBOR plus the related Certificate Margin.

            With respect to the Class M-5 Certificates and, for purposes of the
definition of "Marker Rate", REMIC I Regular Interest I-LTM5, a per annum rate
equal to One-Month LIBOR plus the related Certificate Margin.

            With respect to the Class M-6 Certificates and, for purposes of the
definition of "Marker Rate", REMIC I Regular Interest I-LTM6, a per annum rate
equal to One-Month LIBOR plus the related Certificate Margin.

            "Opinion of Counsel": A written opinion of counsel, who may, without
limitation, be salaried counsel for the Depositor, the Servicer, the Securities
Administrator or the Master Servicer, acceptable to the Trustee, except that any
opinion of counsel relating to (a) the qualification of any REMIC as a REMIC or
(b) compliance with the REMIC Provisions must be an opinion of Independent
counsel.

            "Optional Termination Date": Shall mean the Distribution Date on
which the aggregate principal balance of the Mortgage Loans (and properties
acquired in respect thereof) remaining in the Trust Fund is reduced to less than
10% of the aggregate principal balance of the Mortgage Loans as of the Cut-off
Date.

            "Originator": HomeStar Mortgage Services, LLC, a Delaware limited
liability company and SouthStar Funding, LLC, a Delaware limited liability
company.

            "Overcollateralization Amount": With respect to any Distribution
Date, the excess, if any, of (a) the aggregate Stated Principal Balances of the
Mortgage Loans and REO Properties immediately following such Distribution Date
over (b) the sum of the aggregate Certificate Principal Balances of the Class A
Certificates, the Mezzanine Certificates and the Class P Certificates as of such
Distribution Date (after taking into account the payment of the Principal
Remittance Amount on such Distribution Date).

            "Overcollateralization Increase Amount": With respect to the Class A
Certificates and the Mezzanine Certificates and any Distribution Date is any
amount of Net Monthly Excess Cashflow actually applied as an accelerated payment
of principal to the extent the Required Overcollateralization Amount exceeds the
Overcollateralization Amount.

            "Overcollateralization Reduction Amount": With respect to any
Distribution Date, is the lesser of (i) the amount by which the
Overcollateralization Amount exceeds the Required Overcollateralization Amount
and (ii) the Principal Remittance Amount; provided however that on any
Distribution Date on which a Trigger Event is in effect, the
Overcollateralization Reduction Amount shall equal zero.

                                      -33-
<PAGE>

            "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.

            "P&I Advance": As to any Mortgage Loan or REO Property, any advance
made by the Servicer in respect of any Determination Date pursuant to Section
5.03, an advancing person pursuant to Section 3.25 or in respect of any
Distribution Date by a successor Servicer (including the Master Servicer)
pursuant to Section 8.02 (which advances shall not include interest shortfalls
due to bankruptcy proceedings or application of the Relief Act or similar state
or local laws.)

            "Pass-Through Rate": With respect to the Class A Certificates and
the Mezzanine Certificates and any Distribution Date, a rate per annum equal to
the lesser of (i) the related One-Month LIBOR Pass-Through Rate for such
Distribution Date and (ii) the related Net WAC Pass-Through Rate for such
Distribution Date.

            With respect to the Class CE Certificates and any Distribution Date,
a rate per annum equal to the percentage equivalent of a fraction, the numerator
of which is the sum of the amounts calculated pursuant to clauses (i) through
(xii) below, and the denominator of which is the aggregate Uncertificated
Balances of REMIC I Regular Interest I-LTAA, REMIC I Regular Interest I-LTA1,
REMIC I Regular Interest I-LTA2A, REMIC I Regular Interest I-LTA2B, REMIC I
Regular Interest I-LTM1, REMIC I Regular Interest I-LTM2, REMIC I Regular
Interest I-LTM3, REMIC I Regular Interest I-LTM4, REMIC I Regular Interest
I-LTM5, REMIC I Regular Interest I-LTM6 and REMIC I Regular Interest I-LTZZ. For
purposes of calculating the Pass-Through Rate for the Class CE Certificates, the
numerator is equal to the sum of the following components:

            (i) the REMIC I Remittance Rate for REMIC I Regular Interest I-LTAA
      minus the Marker Rate, applied to an amount equal to the Uncertificated
      Balance of REMIC II Regular Interest I-LTAA;

            (ii) the REMIC I Remittance Rate for REMIC I Regular Interest I-LTA1
      minus the Marker Rate, applied to an amount equal to the Uncertificated
      Balance of REMIC I Regular Interest I-LTA1;

            (iii) the REMIC I Remittance Rate for REMIC I Regular Interest
      I-LTA2A minus the Marker Rate, applied to an amount equal to the
      Uncertificated Balance of REMIC I Regular Interest I-LTA2A;

            (iv) the REMIC I Remittance Rate for REMIC I Regular Interest
      I-LTA2B minus the Marker Rate, applied to an amount equal to the
      Uncertificated Balance of REMIC I Regular Interest I-LTA2B;

                                      -34-
<PAGE>

            (v) the REMIC I Remittance Rate for REMIC I Regular Interest I-LTM1
      minus the Marker Rate, applied to an amount equal to the Uncertificated
      Balance of REMIC I Regular Interest I-LTM1;

            (vi) the REMIC I Remittance Rate for REMIC I Regular Interest I-LTM2
      minus the Marker Rate, applied to an amount equal to the Uncertificated
      Balance of REMIC I Regular Interest I-LTM2;

            (vii) the REMIC I Remittance Rate for REMIC I Regular Interest
      I-LTM3 minus the Marker Rate, applied to an amount equal to the
      Uncertificated Balance of REMIC I Regular Interest I-LTM3;

            (viii) the REMIC I Remittance Rate for REMIC I Regular Interest
      I-LTM4 minus the Marker Rate, applied to an amount equal to the
      Uncertificated Balance of REMIC I Regular Interest I-LTM4;

            (ix) the REMIC I Remittance Rate for REMIC I Regular Interest I-LTM5
      minus the Marker Rate, applied to an amount equal to the Uncertificated
      Balance of REMIC I Regular Interest I-LTM5;

            (x) the REMIC I Remittance Rate for REMIC I Regular Interest I-LTM6
      minus the Marker Rate, applied to an amount equal to the Uncertificated
      Balance of REMIC I Regular Interest I-LTM6;

            (xi) the REMIC I Remittance Rate for REMIC I Regular Interest I-LTZZ
      minus the Marker Rate, applied to an amount equal to the Uncertificated
      Balance of REMIC I Regular Interest I-LTZZ; and

            (xii) 100% of the interest on REMIC I Regular Interest I-LTP.

            "Percentage Interest": With respect to any Class of Certificates
(other than the Residual Certificates), the undivided percentage ownership in
such Class evidenced by such Certificate, expressed as a percentage, the
numerator of which is the initial Certificate Principal Balance represented by
such Certificate and the denominator of which is the aggregate initial
Certificate Principal Balance or Notional Amount of all of the Certificates of
such Class. The Class A Certificates and the Mezzanine Certificates are issuable
only in minimum Percentage Interests corresponding to minimum initial
Certificate Principal Balances of $25,000 and integral multiples of $1.00 in
excess thereof. The Class P Certificates are issuable only in Percentage
Interests corresponding to initial Certificate Principal Balances of $20 and
integral multiples thereof. The Class CE Certificates are issuable only in
minimum Percentage Interests corresponding to minimum initial Certificate
Principal Balances of $10,000 and integral multiples of $1.00 in excess thereof;
provided, however, that a single Certificate of each such Class of Certificates
may be issued having a Percentage Interest corresponding to the remainder of the
aggregate initial Certificate Principal Balance of such Class or to an otherwise
authorized denomination for such Class plus such

                                      -35-
<PAGE>

remainder. With respect to any Residual Certificate, the undivided percentage
ownership in such Class evidenced by such Certificate, as set forth on the face
of such Certificate. The Residual Certificates are issuable in Percentage
Interests of 20% and integral multiples of 5% in excess thereof.

            "Periodic Rate Cap": With respect to each Adjustable Rate Mortgage
Loan and any Adjustment Date therefor, the fixed percentage set forth in the
related Mortgage Note, which is the maximum amount by which the Mortgage Rate
for such Adjustable Rate Mortgage Loan may increase or decrease (without regard
to the Maximum Mortgage Rate or the Minimum Mortgage Rate) on such Adjustment
Date from the Mortgage Rate in effect immediately prior to such Adjustment Date.

            "Permitted Investments": Any one or more of the following
obligations or securities acquired at a purchase price of not greater than par,
regardless of whether issued by the Depositor, the Servicer, the Master
Servicer, the Trustee or any of their respective Affiliates:

                  (i) direct obligations of, or obligations fully guaranteed as
      to timely payment of principal and interest by, the United States or any
      agency or instrumentality thereof, provided such obligations are backed by
      the full faith and credit of the United States;

                  (ii) demand and time deposits in, certificates of deposit of,
      or bankers' acceptances issued by, any Depository Institution;

                  (iii) repurchase obligations with respect to any security
      described in clause (i) above entered into with a Depository Institution
      (acting as principal);

                  (iv) securities bearing interest or sold at a discount that
      are issued by any corporation incorporated under the laws of the United
      States of America or any state thereof and that are rated by each Rating
      Agency that rates such securities in its highest long-term unsecured
      rating categories at the time of such investment or contractual commitment
      providing for such investment;

                  (v) commercial paper (including both non-interest-bearing
      discount obligations and interest-bearing obligations payable on demand or
      on a specified date not more than 30 days after the date of acquisition
      thereof) that is rated by each Rating Agency that rates such securities in
      its highest short-term unsecured debt rating available at the time of such
      investment;

                  (vi) units of money market funds that have been rated "AAA" by
      Fitch (if rated by Fitch), and "AAAm" or "AAAm-G" by S&P or "Aaa" by
      Moody's including any such money market fund managed or advised by the
      Master Servicer, the Trustee or any of their Affiliates; and

                  (vii) if previously confirmed in writing to the Trustee, any
      other demand, money market or time deposit, or any other obligation,
      security or investment, as may be acceptable to the Rating Agencies as a
      permitted investment of funds backing securities having ratings equivalent
      to its highest initial rating of the Class A Certificates;

                                      -36-
<PAGE>

provided, however, that no instrument described hereunder shall evidence either
the right to receive (a) only interest with respect to the obligations
underlying such instrument or (b) both principal and interest payments derived
from obligations underlying such instrument and the interest and principal
payments with respect to such instrument provide a yield to maturity at par
greater than 120% of the yield to maturity at par of the underlying obligations.

            "Permitted Transferee": Any Transferee of a Residual Certificate
other than a Disqualified Organization or Non-United States Person.

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

            "Plan": Any employee benefit plan or certain other retirement plans
and arrangements, 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 are subject to ERISA or Section 4975 of the Code.

            "Preference Amount": As defined in the Class A-2B Policy.

            "Prepayment Assumption": A prepayment rate for the Adjustable Rate
Mortgage Loans of 28% CPR and a prepayment rate of 100% PPC for the fixed rate
Mortgage Loans. The Prepayment Assumption is used solely for determining the
accrual of original issue discount on the Certificates for federal income tax
purposes. A CPR (or Constant Prepayment Rate) represents an annualized constant
assumed rate of prepayment each month of a pool of mortgage loans relative to
its outstanding principal balance for the life of such pool. A 100% PPC
represents (i) a per annum prepayment rate of 4% of the then outstanding
principal balance of the fixed rate Mortgage Loans in the first month of the
life of such Mortgage Loans, (ii) an additional 19%/11 per annum in each month
thereafter through the eleventh month and (iii) a constant prepayment rate of
23% per annum beginning in the twelfth month and in each month thereafter during
the life of the fixed rate Mortgage Loans.

            "Prepayment Charge": With respect to any Principal Prepayment, any
prepayment premium, penalty or charge payable by a Mortgagor in connection with
any Principal Prepayment on a Mortgage Loan pursuant to the terms of the related
Mortgage Note.

            "Prepayment Charge Schedule": As of any date, the list of Mortgage
Loans providing for a Prepayment Charge included in the Trust Fund on such date,
attached hereto as Schedule 2 (including the prepayment charge summary attached
thereto). The Depositor shall deliver or cause the delivery of the Prepayment
Charge Schedule to the Servicer, the Master Servicer and the Trustee on the
Closing Date. The Prepayment Charge Schedule shall set forth the following
information with respect to each Prepayment Charge:

                  (i) the Mortgage Loan identifying number;

                                      -37-
<PAGE>

                  (ii) a code indicating the type of Prepayment Charge;

                  (iii) the date on which the first Monthly Payment was due on
            the related Mortgage Loan;

                  (iv) the term of the related Prepayment Charge;

                  (v) the original Stated Principal Balance of the related
            Mortgage Loan; and

                  (vi) the Stated Principal Balance of the related Mortgage Loan
            as of the Cut-off Date.

            "Prepayment Interest Shortfall": With respect to any Distribution
Date, for each such Mortgage Loan that was the subject of a Principal Prepayment
in full or in part during the portion of the related Prepayment Period occurring
between the first day of the related Prepayment Period and the last day of the
calendar month preceding the month in which such Distribution Date occurs that
was applied by the Servicer to reduce the outstanding principal balance of such
Mortgage Loan on a date preceding the Due Date in the succeeding Prepayment
Period, an amount equal to interest at the applicable Net Mortgage Rate on the
amount of such Principal Prepayment for the number of days commencing on the
date on which the prepayment is applied and ending on the last day of the
calendar month preceding such Distribution Date. The obligations of the Servicer
and the Master Servicer in respect of any Prepayment Interest Shortfall are set
forth in Section 3.22 and Section 4.19, respectively.

            "Prepayment Period": With respect to any Distribution Date, the
calendar month immediately proceeding the month in which such Distribution Date
occurs.

            "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 the full
amount of scheduled interest due on any Due Date in any month or months
subsequent to the month of prepayment.

            "Principal Distribution Amount": With respect to any Distribution
Date is the sum of the Group I Principal Distribution Amount and the Group II
Principal Distribution Amount.

            "Principal Remittance Amount": With respect to any Distribution Date
is the sum of the Group I Principal Remittance Amount and the Group II Principal
Remittance Amount.

            "Purchase Price": With respect to any Mortgage Loan or REO Property
to be purchased pursuant to or as contemplated by Section 2.03, Section 3.13(c)
or Section 10.01, and as confirmed by a certification of a Servicing Officer to
the Trustee, an amount equal to the sum of (i) 100% of the Stated Principal
Balance thereof as of the date of purchase (or such other price as provided in
Section 10.01), (ii) in the case of (x) a Mortgage Loan, accrued interest on
such Stated Principal Balance at the applicable Net Mortgage Rate in effect from
time to time from the Due Date as to which interest was last covered by

                                      -38-
<PAGE>

a payment by the Mortgagor or a P&I Advance by the Servicer, which payment or
P&I Advance had as of the date of purchase been distributed pursuant to Section
5.01, through the end of the calendar month in which the purchase is to be
effected and (y) an REO Property, the sum of (1) accrued interest on such Stated
Principal Balance at the applicable Net Mortgage Rate in effect from time to
time from the Due Date as to which interest was last covered by a payment by the
Mortgagor or a P&I Advance by the Servicer through the end of the calendar month
immediately preceding the calendar month in which such REO Property was
acquired, plus (2) REO Imputed Interest for such REO Property for each calendar
month commencing with the calendar month in which such REO Property was acquired
and ending with the calendar month in which such purchase is to be effected, net
of the total of all net rental income, Insurance Proceeds, Liquidation Proceeds
and P&I Advances that as of the date of purchase had been distributed as or to
cover REO Imputed Interest pursuant to Section 5.01, (iii) any unreimbursed
Servicing Advances and P&I Advances (including Nonrecoverable P&I Advances and
Nonrecoverable Servicing Advances) and any unpaid Servicing Fees allocable to
such Mortgage Loan or REO Property, (iv) any amounts previously withdrawn from
the Collection Account pursuant to Section 3.09(a)(ix) and Section 3.13(b) and
(v) in the case of a Mortgage Loan required to be purchased pursuant to Section
2.03, expenses reasonably incurred or to be incurred by the Servicer or the
Trustee in respect of the breach or defect giving rise to the purchase
obligation and any costs and damages incurred by the Trust Fund and the Trustee
in connection with any violation by any such Mortgage Loan of any predatory or
abusive lending law.

            "Qualified Substitute Mortgage Loan": A mortgage loan substituted
for a Deleted Mortgage Loan pursuant to the terms of this Agreement which must,
on the date of such substitution, (i) have an outstanding principal balance,
after application of all scheduled payments of principal and interest due during
or prior to the month of substitution, not in excess of the Scheduled Principal
Balance of the Deleted Mortgage Loan as of the Due Date in the calendar month
during which the substitution occurs, (ii) have a Mortgage Rate not less than
(and not more than one percentage point in excess of) the Mortgage Rate of the
Deleted Mortgage Loan, (iii) have a Maximum Mortgage Rate not less than the
Maximum Mortgage Rate on the Deleted Mortgage Loan, (iv) have a Minimum Mortgage
Rate not less than the Minimum Mortgage Rate of the Deleted Mortgage Loan, (v)
have a Gross Margin equal to the Gross Margin of the Deleted Mortgage Loan, (vi)
have a next Adjustment Date not more than two months later than the next
Adjustment Date on the Deleted Mortgage Loan, (vii) have a remaining term to
maturity not greater than (and not more than one year less than) that of the
Deleted Mortgage Loan, (viii) have the same Due Date as the Due Date on the
Deleted Mortgage Loan, (ix) have a Loan-to-Value Ratio as of the date of
substitution equal to or lower than the Loan-to-Value Ratio of the Deleted
Mortgage Loan as of such date, (x) be secured by a first lien priority on the
related Mortgaged Property, (xi) have a credit grade at least equal to the
credit grading assigned on the Deleted Mortgage Loan, (xii) be a "qualified
mortgage" as defined in the REMIC Provisions and (xiii) conform to each
representation and warranty set forth in Section 6 of the Mortgage Loan Purchase
Agreement applicable to the Deleted Mortgage Loan. In the event that one or more
mortgage loans are substituted for one or more Deleted Mortgage Loans, the
amounts described in clause (i) hereof shall be determined on the basis of
aggregate principal balances, the Mortgage Rates described in clause (ii) hereof
shall be determined on the basis of weighted average Mortgage Rates, the terms
described in clause (vii) hereof shall be determined on the basis of weighted
average remaining term to maturity, the Loan-to-Value Ratios described in clause
(ix) hereof shall be

                                      -39-
<PAGE>

satisfied as to each such mortgage loan, the credit grades described in clause
(x) hereof shall be satisfied as to each such mortgage loan and, except to the
extent otherwise provided in this sentence, the representations and warranties
described in clause (xii) hereof must be satisfied as to each Qualified
Substitute Mortgage Loan or in the aggregate, as the case may be.

            "Rate/Term Refinancing": A Refinanced Mortgage Loan, the proceeds of
which are not more than a nominal amount in excess of the existing first
mortgage loan and any subordinate mortgage loan on the related Mortgaged
Property and related closing costs, and were used exclusively (except for such
nominal amount) to satisfy the then existing first mortgage loan and any
subordinate mortgage loan of the Mortgagor on the related Mortgaged Property and
to pay related closing costs.

            "Rating Agency or Rating Agencies": Moody's, Fitch and S&P or their
successors. If such agencies or their successors are no longer in existence,
"Rating Agencies" shall be such nationally recognized statistical rating
agencies, or other comparable Persons, designated by the Depositor, notice of
which designation shall be given to the Trustee and the Servicer.

            "Realized Loss": With respect to each Mortgage Loan as to which a
Final Recovery Determination has been made, an amount (not less than zero), as
reported by the Servicer to the Master Servicer equal to (i) the unpaid
principal balance of such Mortgage Loan as of the commencement of the calendar
month in which the Final Recovery Determination was made, plus (ii) accrued
interest from the Due Date as to which interest was last paid by the Mortgagor
through the end of the calendar month in which such Final Recovery Determination
was made, calculated in the case of each calendar month during such period (A)
at an annual rate equal to the annual rate at which interest was then accruing
on such Mortgage Loan and (B) on a principal amount equal to the Stated
Principal Balance of such Mortgage Loan as of the close of business on the
Distribution Date during such calendar month, plus (iii) any amounts previously
withdrawn from the Collection Account in respect of such Mortgage Loan pursuant
to Section 3.09(a)(ix) and Section 3.13(b), minus (iv) the proceeds, if any,
received in respect of such Mortgage Loan during the calendar month in which
such Final Recovery Determination was made, net of amounts that are payable
therefrom to the Servicer with respect to such Mortgage Loan pursuant to Section
3.09(a)(iii).

            With respect to any REO Property as to which a Final Recovery
Determination has been made, an amount (not less than zero) equal to (i) the
unpaid principal balance of the related Mortgage Loan as of the date of
acquisition of such REO Property on behalf of REMIC I, plus (ii) accrued
interest from the Due Date as to which interest was last paid by the Mortgagor
in respect of the related Mortgage Loan through the end of the calendar month
immediately preceding the calendar month in which such REO Property was
acquired, calculated in the case of each calendar month during such period (A)
at an annual rate equal to the annual rate at which interest was then accruing
on the related Mortgage Loan and (B) on a principal amount equal to the Stated
Principal Balance of the related Mortgage Loan as of the close of business on
the Distribution Date during such calendar month, plus (iii) REO Imputed
Interest for such REO Property for each calendar month commencing with the
calendar month in which such REO Property was acquired and ending with the
calendar month in which such Final Recovery Determination was made, plus (iv)
any amounts previously withdrawn from the Collection Account in respect of the
related Mortgage Loan pursuant to Section 3.09(a)(ix) and Section 3.13(b), minus
(v) the aggregate of all P&I Advances

                                      -40-
<PAGE>

and Servicing Advances (in the case of Servicing Advances, without duplication
of amounts netted out of the rental income, Insurance Proceeds and Liquidation
Proceeds described in clause (vi) below) made by the Servicer in respect of such
REO Property or the related Mortgage Loan for which the Servicer has been or, in
connection with such Final Recovery Determination, will be reimbursed pursuant
to Section 3.21 out of rental income, Insurance Proceeds and Liquidation
Proceeds received in respect of such REO Property, minus (vi) the total of all
net rental income, Insurance Proceeds and Liquidation Proceeds received in
respect of such REO Property that has been, or in connection with such Final
Recovery Determination, will be transferred to the Distribution Account pursuant
to Section 3.21.

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

            With respect to each Mortgage Loan which has become the subject of a
Debt Service Reduction, the portion, if any, of the reduction in each affected
Monthly Payment attributable to a reduction in the Mortgage Rate imposed by a
court of competent jurisdiction. Each such Realized Loss shall be deemed to have
been incurred on the Due Date for each affected Monthly Payment.

            "Record Date": With respect to each Distribution Date and the Class
A Certificates and the Mezzanine Certificates, the Business Day immediately
preceding such Distribution Date for so long as such Certificates are Book-Entry
Certificates. With respect to each Distribution Date and any other Class of
Certificates, including any Definitive Certificates, the last day of the
calendar month immediately preceding the month in which such Distribution Date
occurs.

            "Reference Banks": Barclay's Bank PLC, The Tokyo Mitsubishi Bank and
National Westminster Bank PLC and their successors in interest; provided,
however, that if any of the foregoing banks are not suitable to serve as a
Reference Bank, then any leading banks selected by the Securities Administrator
which are engaged in transactions in Eurodollar deposits in the International
Eurocurrency market (i) with an established place of business in London, (ii)
not controlling, under the control of or under common control with the Depositor
or any Affiliate thereof and (iii) which have been designated as such by the
Securities Administrator.

            "Refinanced Mortgage Loan": A Mortgage Loan the proceeds of which
were not used to purchase the related Mortgaged Property.

            "Regular Certificate": Any Class A Certificate, Mezzanine
Certificate, Class CE Certificate or Class P Certificate.

            "Regular Interest": A "regular interest" in a REMIC within the
meaning of Section 860G(a)(1) of the Code.

                                      -41-
<PAGE>

            "Relief Act": The Soldiers' and Sailors' Civil Relief Act of 1940,
as amended, or similar state or local laws.

            "Relief Act Interest Shortfall": With respect to any Distribution
Date and any Mortgage Loan, any reduction in the amount of interest collectible
on such Mortgage Loan for the most recently ended Due Period as a result of the
application of the Relief Act.

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

            "REMIC I": The segregated pool of assets subject hereto,
constituting the primary trust created hereby and to be administered hereunder,
with respect to which a REMIC election is to be made, consisting of: (i) such
Mortgage Loans and Prepayment Charges as from time to time are subject to this
Agreement, together with the Mortgage Files relating thereto, and together with
all collections thereon and proceeds thereof; (ii) any REO Property, together
with all collections thereon and proceeds thereof; (iii) the Trustee's rights
with respect to the Mortgage Loans under all insurance policies required to be
maintained pursuant to this Agreement and any proceeds thereof; (iv) the
Depositor's rights under the Mortgage Loan Purchase Agreement (including any
security interest created thereby); (v) the Collection Account, the Distribution
Account and any REO Account, and such assets that are deposited therein from
time to time and any investments thereof, together with any and all income,
proceeds and payments with respect thereto and (vi) with respect to the Class
A-2B Certificates only, the Class A-2B Policy. Notwithstanding the foregoing,
however, REMIC I specifically excludes (i) all payments and other collections of
principal and interest due on the Mortgage Loans on or before the Cut-off Date
and all Prepayment Charges payable in connection with Principal Prepayments made
before the Cut-off Date and (ii) the Reserve Fund and any amounts on deposit
therein from time to time and any proceeds thereof.

            "REMIC I Interest Loss Allocation Amount": With respect to any
Distribution Date, an amount equal to (a) the product of (i) the aggregate
Stated Principal Balance of the Mortgage Loans and REO Properties then
outstanding and (ii) the REMIC I Remittance Rate for REMIC I Regular Interest
I-LTAA minus the Marker Rate, divided by (b) 12.

            "REMIC I Marker Allocation Percentage": 0.50% of any amount payable
or loss attributable from the Mortgage Loans, which shall be allocated to REMIC
I Regular Interest I-LTAA, REMIC I Regular Interest I-LTA1, REMIC I Regular
Interest I-LTA2A, REMIC I Regular Interest I-LTA2B, REMIC I Regular Interest
I-LTM1, REMIC I Regular Interest I-LTM2, REMIC I Regular Interest I-LTM3, REMIC
I Regular Interest I-LTM4, REMIC I Regular Interest I-LTM5, REMIC I Regular
Interest I-LTM6, REMIC I Regular Interest I-LTZZ and REMIC I Regular Interest
I-LTP.

            "REMIC I Overcollateralization Amount": With respect to any date of
determination, (i) 0.50% of the aggregate Uncertificated Balances of the REMIC I
Regular Interests minus (ii) the aggregate of the Uncertificated Balances of
REMIC I Regular Interest I-LTA1, REMIC I Regular Interest I-LTA2A, REMIC I
Regular Interest I-LTA2B, REMIC I Regular Interest I-LTM1, REMIC I Regular
Interest I-LTM2, REMIC I Regular Interest I-LTM3, REMIC I Regular Interest
I-LTM4, REMIC I Regular

                                      -42-
<PAGE>

Interest I-LTM5, REMIC I Regular Interest I-LTM6 and REMIC Regular Interest
I-LTP, in each case as of such date of determination.

            "REMIC I Principal Loss Allocation Amount": With respect to any
Distribution Date, an amount equal to (a) the product of (i) 0.50% of the
aggregate Stated Principal Balance of the Mortgage Loans and REO Properties then
outstanding and (ii) 1 minus a fraction, the numerator of which is two times the
aggregate of the Uncertificated Balances of REMIC I Regular Interest I-LTA1,
REMIC I Regular Interest I-LTA2A, REMIC I Regular Interest I-LTA2B, REMIC I
Regular Interest I-LTM1, REMIC I Regular Interest I-LTM2, REMIC I Regular
Interest I-LTM3, REMIC I Regular Interest I-LTM4 and the denominator of which is
the aggregate of the Uncertificated Balances of REMIC I Regular Interest I-LTA1,
REMIC I Regular Interest I-LTA2A, REMIC I Regular Interest I-LTA2B, REMIC I
Regular Interest I-LTM1, REMIC I Regular Interest I-LTM2, REMIC I Regular
Interest I-LTM3, REMIC I Regular Interest I-LTM4 and REMIC I Regular Interest
I-LTZZ.

            "REMIC I Regular Interest": Any of the separate non-certificated
beneficial ownership interests in REMIC I issued hereunder and designated as a
"regular interest" in REMIC I. Each REMIC I Regular Interest shall accrue
interest at the related REMIC I Remittance Rate in effect from time to time, and
shall be entitled to distributions of principal, subject to the terms and
conditions hereof, in an aggregate amount equal to its initial Uncertificated
Balance as set forth in the Preliminary Statement hereto. The designations for
the respective REMIC I Regular Interests are set forth in the Preliminary
Statement hereto.

            "REMIC I Regular Interest I-LTAA": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LTAA
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LTA1": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I . REMIC I Regular Interest I-LTA1
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LTA2A": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I . REMIC I Regular Interest I-LTA2A
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

                                      -43-
<PAGE>

            "REMIC I Regular Interest I-LTA2B": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I . REMIC I Regular Interest I-LTA2B
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LTM1": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LTM1
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LTM2": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LTM2
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LTM3": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LTM3
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LTM4": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LTM4
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LTM5": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LTM5
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

                                      -44-
<PAGE>

            "REMIC I Regular Interest I-LTM6": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LTM6
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LTP": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LTP
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LTXX": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LTXX
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LTZZ": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LTZZ
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LT1A": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LT1A
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LT1B": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LT1B
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

                                      -45-
<PAGE>

            "REMIC I Regular Interest I-LT2A": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LT2A
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Regular Interest I-LT2B": One of the separate
non-certificated beneficial ownership interests in REMIC I issued hereunder and
designated as a Regular Interest in REMIC I. REMIC I Regular Interest I-LT2B
shall accrue interest at the related REMIC I Remittance Rate in effect from time
to time, and shall be entitled to distributions of principal, subject to the
terms and conditions hereof, in an aggregate amount equal to its initial
Uncertificated Balance as set forth in the Preliminary Statement hereto.

            "REMIC I Remittance Rate": With respect to REMIC I Regular Interest
I-LTAA, REMIC I Regular Interest I-LTA1, REMIC I Regular Interest I-LTA2A, REMIC
I Regular Interest I-LTA2B, REMIC I Regular Interest I-LTM1, REMIC I Regular
Interest I-LTM2, REMIC I Regular Interest I-LTM3, REMIC I Regular Interest
I-LTM4, REMIC I Regular Interest I-LTM5, REMIC I Regular Interest I-LTM6, REMIC
I Regular Interest I-LTZZ, REMIC I Regular Interest I-LTP, REMIC I Regular
Interest I-LT1A, REMIC I Regular Interest I-LT2A and REMIC I Regular Interest
I-LTXX, the weighted average of the Expense Adjusted Net Mortgage Rates of the
Mortgage Loans. With respect to REMIC I Regular Interest I-LT1B, the weighted
average of the Expense Adjusted Net Mortgage Rates of the Group I Mortgage
Loans. With respect to REMIC I Regular Interest I- LT2B, the weighted average of
the Expense Adjusted Net Mortgage Rates of the Group II Mortgage Loans.

            "REMIC I Sub WAC Allocation Percentage": 0.50% of any amount payable
or loss attributable from the Mortgage Loans, which shall be allocated to REMIC
I Regular Interest I-LT1A, REMIC I Regular Interest I-LT1B, REMIC I Regular
Interest I-LT2A, REMIC I Regular Interest I-LT2B and REMIC I Regular Interest
I-LTXX.

            "REMIC I Subordinated Balance Ratio": The ratio among the
Uncertificated Balances of each REMIC I Regular Interest ending with the
designation "A,", equal to the ratio among, with respect to each such REMIC I
Regular Interest, the excess of (x) the aggregate Stated Principal Balance of
the Group I Mortgage Loans or Group II Mortgage Loans, as applicable over (y)
the current Certificate Principal Balance of related Class A Certificates.

            "REMIC I Required Overcollateralization Amount": 1% of the Required
Overcollateralization Amount.

            "REMIC II": The segregated pool of assets consisting of all of the
REMIC I Regular Interests conveyed in trust to the Trustee, for the benefit of
the REMIC II Certificateholders pursuant to Section 2.09, and all amounts
deposited therein, with respect to which a separate REMIC election is to be
made.

                                      -46-
<PAGE>

            "REMIC II Certificate": Any Regular Certificate or Class R
Certificate.

            "REMIC II Certificateholder": The Holder of any REMIC II
Certificate.

            "REMIC Provisions": Provisions of the federal income tax law
relating to real estate mortgage investment conduits, which appear at Section
860A through 860G 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 by the Securities Administrator
pursuant to Section 5.03(f).

            "Rents from Real Property": With respect to any REO Property, gross
income of the character described in Section 856(d) of the Code as being
included in the term "rents from real property."

            "REO Account": The account or accounts maintained, or caused to be
maintained, by the Servicer in respect of an REO Property pursuant to Section
3.21.

            "REO Disposition": The sale or other disposition of an REO Property
on behalf of REMIC I.

            "REO Imputed Interest": As to any REO Property, for any calendar
month during which such REO Property was at any time part of REMIC I, one
month's interest at the applicable Net Mortgage Rate on the Stated Principal
Balance of such REO Property (or, in the case of the first such calendar month,
of the related Mortgage Loan, if appropriate) as of the close of business on the
Distribution Date in such calendar month.

            "REO Principal Amortization": With respect to any REO Property, for
any calendar month, the excess, if any, of (a) the aggregate of all amounts
received in respect of such REO Property during such calendar month, whether in
the form of rental income, sale proceeds (including, without limitation, that
portion of the Termination Price paid in connection with a purchase of all of
the Mortgage Loans and REO Properties pursuant to Section 10.01 that is
allocable to such REO Property) or otherwise, net of any portion of such amounts
(i) payable in respect of the proper operation, management and maintenance of
such REO Property or (ii) payable or reimbursable to the Servicer pursuant to
Section 3.21(d) for unpaid Servicing Fees in respect of the related Mortgage
Loan and unreimbursed Servicing Advances and P&I Advances in respect of such REO
Property or the related Mortgage Loan, over (b) the REO Imputed Interest in
respect of such REO Property for such calendar month.

            "REO Property": A Mortgaged Property acquired by the Servicer on
behalf of REMIC I through foreclosure or deed-in-lieu of foreclosure, as
described in Section 3.21.

            "Required Overcollateralization Amount": With respect to any
Distribution Date (i) prior to the Stepdown Date, $7,142,685, (ii) on or after
the Stepdown Date provided a Trigger Event is not in

                                      -47-
<PAGE>

effect, the greater of (x) 3.50% of the aggregate Stated Principal Balance of
the Mortgage Loans as of the last day of the related Due Period and (y)
$2,040,579, and (iii) on or after the Stepdown Date and a Trigger Event is in
effect, the Required Overcollateralization Amount for the immediately preceding
Distribution Date.

            "Reserve Fund": A fund created pursuant to Section 3.24 which shall
be an asset of the Trust Fund but which shall not be an asset of any Trust
REMIC.

            "Reserve Interest Rate": With respect to any Interest Determination
Date, the rate per annum that the Securities Administrator determines to be
either (i) the arithmetic mean (rounded upwards if necessary to the nearest
whole multiple of 1/16%) of the one-month U.S. dollar lending rates which New
York City banks selected by the Securities Administrator, after consultation
with the Depositor, are quoting on the relevant Interest Determination Date to
the principal London offices of leading banks in the London interbank market or
(ii) in the event that the Securities Administrator can determine no such
arithmetic mean, the lowest one-month U.S. dollar lending rate which New York
City banks selected by the Securities Administrator are quoting on such Interest
Determination Date to leading European banks.

            "Residential Dwelling": Any one of the following: (i) an attached,
detached or semi-detached one-family dwelling, (ii) an attached, detached or
semi-detached two- to four-family dwelling, (iii) a one-family dwelling unit in
a Fannie Mae eligible condominium project, or (iv) an attached, detached or
semi-detached one-family dwelling in a planned unit development, none of which
is a co-operative, mobile or manufactured home (as defined in 42 United States
Code, Section 5402(6)).

            "Residual Certificate": Any one of the Class R Certificates.

            "Residual Interest": The sole class of "residual interests" in a
REMIC within the meaning of Section 860G(a)(2) of the Code.

            "Responsible Officer": When used with respect to the Trustee, the
Chairman or Vice Chairman of the Board of Directors (however denominated), the
Chairman or Vice Chairman of any Committee of the Board of Directors, the
President, the Chairman of any 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 in each
case having direct responsibility for the administration of this Agreement and,
with respect to a particular matter, to whom such matter is referred because of
such officer's knowledge of and familiarity with the particular subject.

            "S&P": Standard and Poor's, a division of the McGraw-Hill Companies,
Inc.

            "Scheduled Principal Balance": With respect to any Mortgage Loan:
(a) as of the Cut-off Date, the outstanding principal balance of such Mortgage
Loan as of such date, net of the principal portion of all unpaid Monthly
Payments, if any, due on or before such date; (b) as of any Due Date subsequent
to

                                      -48-
<PAGE>

the Cut-off Date up to and including the Due Date in the calendar month in which
a Liquidation Event occurs with respect to such Mortgage Loan, the Scheduled
Principal Balance of such Mortgage Loan as of the Cut-off Date, minus the sum of
(i) the principal portion of each Monthly Payment due on or before such Due Date
but subsequent to the Cut-off Date, whether or not received, (ii) all Principal
Prepayments received before such Due Date but after the Cut-off Date, (iii) the
principal portion of all Liquidation Proceeds and Insurance Proceeds received
before such Due Date but after the Cut-off Date, net of any portion thereof that
represents principal due (without regard to any acceleration of payments under
the related Mortgage and Mortgage Note) on a Due Date occurring on or before the
date on which such proceeds were received and (iv) any Realized Loss incurred
with respect thereto as a result of a Deficient Valuation occurring before such
Due Date, but only to the extent such Realized Loss represents a reduction in
the portion of principal of such Mortgage Loan not yet due (without regard to
any acceleration of payments under the related Mortgage and Mortgage Note) as of
the date of such Deficient Valuation; and (c) as of any Due Date subsequent to
the occurrence of a Liquidation Event with respect to such Mortgage Loan, zero.
With respect to any REO Property: (a) as of any Due Date subsequent to the date
of its acquisition on behalf of the Trust Fund up to and including the Due Date
in the calendar month in which a Liquidation Event occurs with respect to such
REO Property, an amount (not less than zero) equal to the Scheduled Principal
Balance of the related Mortgage Loan as of the Due Date in the calendar month in
which such REO Property was acquired, minus the aggregate amount of REO
Principal Amortization, if any, in respect of such REO Property for all
previously ended calendar months; and (b) as of any Due Date subsequent to the
occurrence of a Liquidation Event with respect to such REO Property, zero.

            "Securities Administrator": As of the Closing Date, Wells Fargo Bank
Minnesota, National Association and thereafter, its respective successors in
interest that meet the qualifications of this Agreement. The Securities
Administrator and the Master Servicer shall at all times be the same Person.

            "Seller": Deutsche Bank AG New York Branch or its successor in
interest, in its capacity as seller under the Mortgage Loan Purchase Agreement.

            "Senior Interest Distribution Amount": With respect to any
Distribution Date, an amount equal to the sum of (i) the Interest Distribution
Amount for such Distribution Date for the Class A Certificates and (ii) the
Interest Carry Forward Amount, if any, for such Distribution Date for the Class
A Certificates.

            "Servicer": The Provident Bank or any successor servicer appointed
as herein provided, in its capacity as Servicer hereunder.

            "Servicer Event of Default": One or more of the events described in
Section 8.01(a).

            "Servicer Remittance Date": With respect to any Distribution Date,
by 12:00 p.m. New York time on the 22nd day of the month in which such
Distribution Date occurs, or if such 22nd day is not a Business Day, the
Business Day immediately preceding such 22nd day.

                                      -49-
<PAGE>

            "Servicer Report": A report in form and substance acceptable to the
Master Servicer and Securities Administrator on an electronic data file or tape
prepared by the Servicer pursuant to Section 5.03(a) with such additions,
deletions and modifications as agreed to by the Master Servicer, the Securities
Administrator and the Servicer.

            "Servicing Advances": The customary reasonable and necessary
"out-of-pocket" costs and expenses incurred by the Servicer in connection with a
default, delinquency or other unanticipated event by the Servicer in the
performance 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 but not
limited to foreclosures, in respect of a particular Mortgage Loan, including any
expenses incurred in relation to any such proceedings that result from the
Mortgage Loan being registered on the MERS(R) System, (iii) the management
(including reasonable fees in connection therewith) and liquidation of any REO
Property and (iv) the performance of its obligations under Section 3.01, Section
3.07, Section 3.11, Section 3.13 and Section 3.21. Servicing Advances also
include any reasonable "out-of-pocket" cost and expenses (including legal fees)
incurred by the Servicer in connection with executing and recording instruments
of satisfaction, deeds of reconveyance or Assignments to the extent not
recovered from the Mortgagor or otherwise payable under this Agreement. The
Servicer shall not be required to make any Nonrecoverable Servicing Advances.

            "Servicing Fee": With respect to each Mortgage Loan and for any
calendar month, an amount equal to one twelfth of the product of the Servicing
Fee Rate multiplied by the Scheduled Principal Balance of the Mortgage Loans as
of the Due Date in the preceding calendar month. The Servicing Fee is payable
solely from collections of interest on the Mortgage Loans.

            "Servicing Fee Rate": 0.50% per annum.

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

            "Single Certificate": With respect to any Class of Certificates
(other than the Residual Certificates), a hypothetical Certificate of such Class
evidencing a Percentage Interest for such Class corresponding to an initial
Certificate Principal Balance of $1,000. With respect to the Residual
Certificates, a hypothetical Certificate of such Class evidencing a 100%
Percentage Interest in such Class.

            "Startup Day": With respect to each Trust REMIC, the day designated
as such pursuant to Section 11.01(b) hereof.

            "Stated Principal Balance": With respect to any Mortgage Loan: (a)
as of any date of determination up to but not including the Distribution Date on
which the proceeds, if any, of a Liquidation Event with respect to such Mortgage
Loan would be distributed, the Scheduled Principal Balance of such

                                      -50-
<PAGE>

Mortgage Loan as of the Cut-off Date, as shown in the Mortgage Loan Schedule,
minus the sum of (i) the principal portion of each Monthly Payment due on a Due
Date subsequent to the Cut-off Date, to the extent received from the Mortgagor
or advanced by the Servicer or a successor Servicer (including the Master
Servicer) and distributed pursuant to Section 5.01 on or before such date of
determination, (ii) all Principal Prepayments received after the Cut-off Date,
to the extent distributed pursuant to Section 5.01 on or before such date of
determination, (iii) all Liquidation Proceeds and Insurance Proceeds applied by
the Servicer as recoveries of principal in accordance with the provisions of
Section 3.13, to the extent distributed pursuant to Section 5.01 on or before
such date of determination, and (iv) any Realized Loss incurred with respect
thereto as a result of a Deficient Valuation made during or prior to the
Prepayment Period for the most recent Distribution Date coinciding with or
preceding such date of determination; and (b) as of any date of determination
coinciding with or subsequent to the Distribution Date on which the proceeds, if
any, of a Liquidation Event with respect to such Mortgage Loan would be
distributed, zero. With respect to any REO Property: (a) as of any date of
determination up to but not including the Distribution Date on which the
proceeds, if any, of a Liquidation Event with respect to such REO Property would
be distributed, an amount (not less than zero) equal to the Stated Principal
Balance of the related Mortgage Loan as of the date on which such REO Property
was acquired on behalf of REMIC I, minus the sum of (i) if such REO Property was
acquired before the Distribution Date in any calendar month, the principal
portion of the Monthly Payment due on the Due Date in the calendar month of
acquisition, to the extent advanced by the Servicer or a successor Servicer
(including the Master Servicer) and distributed pursuant to Section 5.01 on or
before such date of determination, and (ii) the aggregate amount of REO
Principal Amortization in respect of such REO Property for all previously ended
calendar months, to the extent distributed pursuant to Section 4.01 on or before
such date of determination; and (b) as of any date of determination coinciding
with or subsequent to the Distribution Date on which the proceeds, if any, of a
Liquidation Event with respect to such REO Property would be distributed, zero.

            "Stepdown Date": The earlier to occur of (i) the later to occur of
(a) the Distribution Date occurring in September 2006 and (b) the first
Distribution Date on which the Credit Enhancement Percentage (calculated for
this purpose only after taking into account distributions of principal on the
Mortgage Loans but prior to any distribution of the Principal Distribution
Amount to the Certificates then entitled to distributions of principal on such
Distribution Date) is equal to or greater than 31.50% and (ii) the first
Distribution Date on which the aggregate Certificate Principal Balance of the
Class A Certificates has been reduced to zero.

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

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

            "Substitution Shortfall Amount": As defined in Section 2.03.

            "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

                                      -51-
<PAGE>

Notice to Residual Interest Holders of REMIC Taxable Income or Net Loss
Allocation, or any successor forms, to be filed on behalf of the Trust REMICs
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.

            "Telerate Page 3750": The display designated as page "3750" on the
Dow Jones Telerate Capital Markets Report (or such other page as may replace
page 3750 on that report for the purpose of displaying London interbank offered
rates of major banks).

            "Termination Price": As defined in Section 10.01.

            "Terminator": As defined in Section 10.01.

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

            "Transferee": Any Person who is acquiring by Transfer any Ownership
Interest in a Certificate.

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

            "Trigger Event": A Trigger Event has occurred with respect to a
Distribution Date if either (x) the Delinquency Percentage exceeds 16.50% or (y)
the aggregate amount of Realized Losses incurred since the Cut-off Date through
the last day of the related Due Period divided by the aggregate principal
balance of the Mortgage Loans as of the Cut-off exceeds the applicable
percentages set forth below with respect to such Distribution Date:

            Distribution Date                 Percentage
            -----------------                 ----------
            September 2006 to August 2007     2.75%, plus 1/12 of 1.25% for each
                                              month after September 2006
            September 2007 to August 2008     4.00%, plus 1/12 of 1.25% for each
                                              month after September 2007
            September 2008 to August 2009     5.25%, plus 1/12 of 0.50% for each
                                              month after September 2008
            September 2009 and thereafter     5.75%

            "Trust": ACE Securities Corp., Home Equity Loan Trust, Series
2003-HS1, the trust created hereunder.

                                      -52-
<PAGE>

            "Trust Fund": Collectively, all of the assets of REMIC I, REMIC II,
the Reserve Fund and the Class A-2B Policy Payments Account and any amounts on
deposit therein and any proceeds thereof and the Prepayment Charges.

            "Trust REMIC": REMIC I or REMIC II.

            "Trustee": Bank One, National Association, a national banking
association, or its successor in interest, or any successor trustee appointed as
herein provided.

            "Uncertificated Balance": The amount of the Uncertificated REMIC
Regular Interests outstanding as of any date of determination. As of the Closing
Date, the Uncertificated Balance of each Uncertificated REMIC Regular Interest
shall equal the amount set forth in the Preliminary Statement hereto as its
initial uncertificated balance. On each Distribution Date, the Uncertificated
Balance of the Uncertificated REMIC Regular Interest shall be reduced by all
distributions of principal made on such Uncertificated REMIC Regular Interest on
such Distribution Date pursuant to Section 5.01 and, if and to the extent
necessary and appropriate, shall be further reduced on such Distribution Date by
Realized Losses as provided in Section 5.04 [and the Uncertificated Balance of
REMIC I Regular Interest I-LTZZ shall be increased by interest deferrals as
provided in Section 5.01(a)(1)(B)]. The Uncertificated Balance of each
Uncertificated REMIC Regular Interest shall never be less than zero.

            "Uncertificated Interest": With respect to any REMIC I Regular
Interest for any Distribution Date, one month's interest at the REMIC I
Remittance Rate applicable to such REMIC I Regular Interest for such
Distribution Date, accrued on the Uncertificated Balance or Uncertificated
Notional Amount, as applicable, thereof immediately prior to such Distribution
Date. Uncertificated Interest in respect of the REMIC I Regular Interests shall
accrue on the basis of a 360-day year consisting of twelve 30-day months.
Uncertificated Interest with respect to each Distribution Date, as to any REMIC
I Regular Interest, shall be reduced by an amount equal to the sum of (a) the
aggregate Prepayment Interest Shortfall, if any, for such Distribution Date to
the extent not covered by payments pursuant to Section 3.22 or Section 4.19 and
(b) the aggregate amount of any Relief Act Interest Shortfall, if any allocated,
in each case, to such REMIC I Regular Interest or REMIC I Regular Interest
pursuant to Section 1.02. In addition, Uncertificated Interest with respect to
each Distribution Date, as to any Uncertificated REMIC Regular Interest, shall
be reduced by Realized Losses, if any, allocated to such Uncertificated REMIC
Regular Interest pursuant to Section 1.02 and Section 5.04.

            "Uninsured Cause": Any cause of damage to a Mortgaged Property such
that the complete restoration of such property is not fully reimbursable by the
hazard insurance policies required to be maintained pursuant to Section 3.11.

            "United States Person": 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 (except, in the
case of a partnership, to the extent provided in regulations) provided that, for
purposes solely of the restrictions on the transfer of any Class R Certificate,
no partnership or other entity treated as a partnership for United States
federal income tax purposes shall be treated as a United

                                      -53-
<PAGE>

States Person unless all persons that own an interest in such partnership either
directly or through any entity that is not a corporation for United States
federal income tax purposes are required to be United States Persons, 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 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 I 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. The term "United States"
shall have the meaning set forth in Section 7701 of the Code.

            "Value": With respect to any Mortgaged Property, the lesser of (i)
the lesser of (a) the value thereof as determined by an appraisal made for the
originator of the Mortgage Loan at the time of origination of the Mortgage Loan
by an appraiser who met the minimum requirements of Fannie Mae and Freddie Mac
and (b) the value thereof as determined by a review appraisal conducted by the
originator of the Mortgage Loan in accordance with such originator's
underwriting guidelines, and (ii) the purchase price paid for the related
Mortgaged Property by the Mortgagor with the proceeds of the Mortgage Loan;
provided, however, (A) in the case of a Refinanced Mortgage Loan, such value of
the Mortgaged Property is based solely upon the lesser of (1) the value
determined by an appraisal made for the originator of the Mortgage Loan of such
Refinanced Mortgage Loan at the time of origination of such Refinanced Mortgage
Loan by an appraiser who met the minimum requirements of Fannie Mae and Freddie
Mac and (2) the value thereof as determined by a review appraisal conducted by
the originator of the Mortgage Loan in accordance with such originator's
underwriting guidelines, and (B) in the case of a Mortgage Loan originated in
connection with a "lease-option purchase," such value of the Mortgaged Property
is based on the lower of the value determined by an appraisal made for the
originator of such Mortgage Loan at the time of origination or the sale price of
such Mortgaged Property if the "lease option purchase price" was set less than
12 months prior to origination, and is based on the value determined by an
appraisal made for the originator of such Mortgage Loan at the time of
origination if the "lease option purchase price" was set 12 months or more prior
to origination.

            "Voting Rights": The portion of the voting rights of all of the
Certificates which is allocated to any such Certificate. With respect to any
date of determination, 98% of all Voting Rights will be allocated among the
holders of the Class A Certificates, the Mezzanine Certificates and the Class CE
Certificates in proportion to the then outstanding Certificate Principal
Balances of their respective Certificates, 1% of all Voting Rights will be
allocated among the holders of the Class P Certificates and 1% of all Voting
Rights will be allocated among the holders of the Class R Certificates. The
Voting Rights allocated to each Class of Certificate shall be allocated among
Holders of each such Class in accordance with their respective Percentage
Interests as of the most recent Record Date. With respect to Voting Rights, the
Class A-2B Certificateholders are subject to Section 5.07(l) of this Agreement.

            "Wells Fargo": Wells Fargo Bank Minnesota, National Association or
any successor thereto.

                                      -54-
<PAGE>

            SECTION 1.02. Allocation of Certain Interest Shortfalls.

            For purposes of calculating the amount of Accrued Certificate
Interest and the amount of the Interest Distribution Amount for the Class A
Certificates, the Mezzanine Certificates and the Class CE Certificates for any
Distribution Date, (1) the aggregate amount of any Prepayment Interest
Shortfalls (to the extent not covered by payments by the Servicer pursuant to
Section 3.22 or the Master Servicer pursuant to Section 4.19 and any Relief Act
Interest Shortfalls incurred in respect of the Mortgage Loans for any
Distribution Date shall be allocated first, to the Class CE Certificates based
on, and to the extent of, one month's interest at the then applicable respective
Pass-Through Rate on the Notional Amount thereof and, thereafter, among the
Class M-6 Certificates, Class M-5 Certificates, Class M-4 Certificates, the
Class M-3 Certificates, the Class M-2 Certificates, the Class M-1 Certificates
and the Class A Certificates, in that order, in each case on a pro rata basis
based on, and to the extent of, one month's interest at the then applicable
respective Pass-Through Rate on the respective Certificate Principal Balance of
each such Certificate and (2) the aggregate amount of any Realized Losses
allocated to the Mezzanine Certificates and Net WAC Rate Carryover Amounts paid
to the Class A Certificates and the Mezzanine Certificates incurred for any
Distribution Date shall be allocated to the Class CE Certificates on a pro rata
basis based on, and to the extent of, one month's interest at the then
applicable respective Pass-Through Rate on the respective Notional Amount
thereof.

            For purposes of calculating the amount of Uncertificated Interest
for the REMIC I Regular Interests for any Distribution Date:

            (A) The REMIC I Marker Allocation Percentage of the aggregate amount
of any Prepayment Interest Shortfalls (to the extent not covered by payments by
the Servicer pursuant to Section 3.22 or the Master Servicer pursuant to Section
4.19) and the REMIC I Marker Allocation Percentage of any Relief Act Interest
Shortfalls incurred in respect of the Mortgage Loans for any Distribution Date
shall be allocated first, to Uncertificated Interest payable to REMIC I Regular
Interest I-LTAA and REMIC II Regular Interest I-LTZZ up to an aggregate amount
equal to the REMIC I Interest Loss Allocation Amount, 98% and 2%, respectively,
and thereafter among REMIC I Regular Interest I-LTA1, REMIC I Regular Interest
I-LTA2A, REMIC I Regular Interest I-LTA2B, REMIC I Regular Interest I-LTM1,
REMIC I Regular Interest I-LTM2, REMIC I Regular Interest I-LTM3, REMIC I
Regular Interest I-LTM4, REMIC I Regular Interest I-LTM5, REMIC I Regular
Interest I-LTM6 and REMIC I Regular Interest I-LTZZ pro rata based on, and to
the extent of, one month's interest at the then applicable respective REMIC II
Remittance Rate on the respective Uncertificated Balance of each such REMIC I
Regular Interest; and

            (B) The REMIC I Sub WAC Allocation Percentage of the aggregate
amount of any Prepayment Interest Shortfalls (to the extent not covered by
payments by the Servicer pursuant to Section 3.22 or the Master Servicer
pursuant to Section 4.19) and the REMIC I Sub WAC Allocation Percentage of any
Relief Act Interest Shortfalls incurred in respect of the Mortgage Loans for any
Distribution Date shall be allocated first, to Uncertificated Interest payable
to REMIC I Regular Interest I-LT1A, REMIC I Regular Interest I-LT1B, REMIC I
Regular Interest I-LT2A, REMIC I Regular Interest I-LT2B, and REMIC I Regular
Interest I-LTXX, pro rata based on, and to the extent of, one month's interest
at the then

                                      -55-
<PAGE>

applicable respective REMIC I Remittance Rate on the respective Uncertificated
Balance of each such REMIC I Regular Interest.

                                      -56-
<PAGE>

                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS;
                        ORIGINAL ISSUANCE OF CERTIFICATES

            SECTION 2.01. Conveyance of the Mortgage Loans.

            The Depositor, concurrently with the execution and delivery hereof,
does hereby transfer, assign, set over and otherwise convey to the Trustee, on
behalf of the Trust, without recourse, for the benefit of the Certificateholders
and MBIA, all the right, title and interest of the Depositor, including any
security interest therein for the benefit of the Depositor, in and to the
Mortgage Loans identified on the Mortgage Loan Schedule, the rights of the
Depositor under the Mortgage Loan Purchase Agreement (including, without
limitation the right to enforce the obligations of the other parties thereto
thereunder), and all other assets included or to be included in REMIC I. Such
assignment includes all interest and principal received by the Depositor or the
Servicer on or with respect to the Mortgage Loans (other than payments of
principal and interest due on such Mortgage Loans on or before the Cut-off
Date). The Depositor herewith delivers to the Trustee and the Servicer an
executed copy of the Mortgage Loan Purchase Agreement and the MGIC PMI Policy.
In addition, on or prior to the Closing Date, the Depositor shall cause MBIA to
deliver the Class A-2B Policy to the Trustee.

            In connection with such transfer and assignment, the Depositor does
hereby deliver to, and deposit with the Custodian pursuant to the Custodial
Agreement the documents with respect to each Mortgage Loan as described under
Section 2 of the Custodial Agreement (the "Mortgage Loan Documents"). In
connection with such delivery and as further described in the Custodial
Agreement, the Custodian will be required to review such Mortgage Loan Documents
and deliver to the Trustee, the Depositor, the Servicer, MBIA and the Seller
certifications (in the forms attached to the Custodial Agreement) with respect
to such review with exceptions noted thereon. In addition, under the Custodial
Agreement the Depositor will be required to cure certain defects with respect to
the Mortgage Loan Documents for the related Mortgage Loans after the delivery
thereof by the Depositor to the Custodian as more particularly set forth
therein.

            Notwithstanding anything to the contrary contained herein, the
parties hereto acknowledge that the functions of the Trustee with respect to the
custody, acceptance, inspection and release of the Mortgage Files, including,
but not limited to certain insurance policies and documents contemplated by
Section 4.12, and preparation and delivery of the certifications shall be
performed by the Custodian pursuant to the terms and conditions of the Custodial
Agreement.

            The Depositor shall deliver or cause the related Originator to
deliver to the Servicer copies of all trailing documents required to be included
in the Mortgage File at the same time the originals or certified copies thereof
are delivered to the Trustee or Custodian, such documents including the
mortgagee policy of title insurance and any Mortgage Loan Documents upon return
from the recording office. The Servicer shall not be responsible for any
custodian fees or other costs incurred in obtaining such documents

                                      -57-
<PAGE>

and the Depositor shall cause the Servicer to be reimbursed for any such costs
the Servicer may incur in connection with performing its obligations under this
Agreement.

            SECTION 2.02. Acceptance of REMIC I by Trustee.

            The Trustee acknowledges receipt, subject to the provisions of
Section 2.01 hereof and Section 2 of the Custodial Agreement, of the Mortgage
Loan Documents and all other assets included in the definition of "REMIC I"
under clauses (i), (iii), (iv) and (v) (to the extent of amounts deposited into
the Distribution Account) and declares that it holds (or the Custodian on its
behalf holds) and will hold such documents and the other documents delivered to
it constituting a Mortgage Loan Document, and that it holds (or the Custodian on
its behalf holds) or will hold all such assets and such other assets included in
the definition of "REMIC I" in trust for the exclusive use and benefit of all
present and future Certificateholders and MBIA.

            SECTION 2.03. Repurchase or Substitution of Mortgage Loans.

            (a) Upon discovery or receipt of notice of any materially defective
document in, or that a document is missing from, a Mortgage File or of a breach
by the Seller of any representation, warranty or covenant under the Mortgage
Loan Purchase Agreement in respect of any Mortgage Loan that materially and
adversely affects the value of such Mortgage Loan or the interest therein of the
Certificateholders (determined without regard to the Class A-2B Policy), the
Trustee shall promptly notify the Seller and the Servicer of such defect,
missing document or breach and request that the Seller deliver such missing
document, cure such defect or breach within 60 days from the date the Seller was
notified of such missing document, defect or breach, and if the Seller does not
deliver such missing document or cure such defect or breach in all material
respects during such period, the Trustee shall enforce the obligations of the
Seller under the Mortgage Loan Purchase Agreement to repurchase such Mortgage
Loan from REMIC I at the Purchase Price within 90 days after the date on which
the Seller was notified of such missing document, defect or breach, if and to
the extent that the Seller is obligated to do so under the Mortgage Loan
Purchase Agreement. The Purchase Price for the repurchased Mortgage Loan shall
be remitted to the Servicer for deposit in the Collection Account and the
Trustee, upon receipt of written certification from the Servicer of such
deposit, shall release or cause the Custodian (upon receipt of a request for
release in the form attached to the Custodial Agreement) to release to the
Seller the related Mortgage File and the Trustee shall execute and deliver such
instruments of transfer or assignment, in each case without recourse,
representation or warranty, as the Seller shall furnish to it and as shall be
necessary to vest in the Seller any Mortgage Loan released pursuant hereto, and
the Trustee shall not have any further responsibility with regard to such
Mortgage File. In lieu of repurchasing any such Mortgage Loan as provided above,
if so provided in the Mortgage Loan Purchase Agreement, the Seller may cause
such Mortgage Loan to be removed from REMIC I (in which case it shall become a
Deleted Mortgage Loan) and substitute one or more Qualified Substitute Mortgage
Loans in the manner and subject to the limitations set forth in Section 2.03(b).
It is understood and agreed that the obligation of the Seller to cure or to
repurchase (or to substitute for) any Mortgage Loan as to which a document is
missing, a material defect in a constituent document exists or as to which such
a breach has occurred and is continuing shall constitute

                                      -58-
<PAGE>

the sole remedy respecting such omission, defect or breach available to the
Trustee and the Certificateholders.

            In addition, promptly upon the earlier of discovery by the Servicer
or receipt of notice by the Servicer of the breach of the representation or
covenant of the Seller set forth in Section 5(xiv) of the Mortgage Loan Purchase
Agreement which materially and adversely affects the interests of the Holders of
the Class P Certificates in any Prepayment Charge, the Servicer shall promptly
notify the Seller and the Trustee of such breach. The Trustee shall enforce the
obligations of the Seller under the Mortgage Loan Purchase Agreement to remedy
such breach to the extent and in the manner set forth in the Mortgage Loan
Purchase Agreement.

            (b) Any substitution of Qualified Substitute Mortgage Loans for
Deleted Mortgage Loans made pursuant to Section 2.03(a) must be effected prior
to the date which is two years after the Startup Day for REMIC I.

            As to any Deleted Mortgage Loan for which the Seller, substitutes a
Qualified Substitute Mortgage Loan or Loans, such substitution shall be effected
by the Seller delivering to the Trustee or the Custodian on behalf of the
Trustee, for such Qualified Substitute Mortgage Loan or Loans, the Mortgage
Note, the Mortgage, the Assignment to the Trustee, and such other documents and
agreements, with all necessary endorsements thereon, as are required by Section
2 of the Custodial Agreement, as applicable, together with an Officers'
Certificate providing that each such Qualified Substitute Mortgage Loan
satisfies the definition thereof and specifying the Substitution Shortfall
Amount (as described below), if any, in connection with such substitution. The
Custodian on behalf of the Trustee shall acknowledge receipt of such Qualified
Substitute Mortgage Loan or Loans and, within ten Business Days thereafter,
review such documents and deliver to the Depositor, the Trustee, MBIA and the
Servicer, with respect to such Qualified Substitute Mortgage Loan or Loans, an
initial certification pursuant to the Custodial Agreement, with any applicable
exceptions noted thereon. Within one year of the date of substitution, the
Custodian on behalf of the Trustee shall deliver to the Depositor, the Trustee,
MBIA and the Servicer a final certification pursuant to the Custodial Agreement
with respect to such Qualified Substitute Mortgage Loan or Loans, with any
applicable exceptions noted thereon. Monthly Payments due with respect to
Qualified Substitute Mortgage Loans in the month of substitution are not part of
REMIC I and will be retained by the Seller. For the month of substitution,
distributions to Certificateholders will reflect the Monthly Payment due on such
Deleted Mortgage Loan on or before the Due Date in the month of substitution,
and the Seller shall thereafter be entitled to retain all amounts subsequently
received in respect of such Deleted Mortgage Loan. The Depositor shall give or
cause to be given written notice to the Certificateholders and MBIA that such
substitution has taken place, shall amend the Mortgage Loan Schedule to reflect
the removal of such Deleted Mortgage Loan from the terms of this Agreement and
the substitution of the Qualified Substitute Mortgage Loan or Loans and shall
deliver a copy of such amended Mortgage Loan Schedule to the Trustee, MBIA and
the Servicer. Upon such substitution, such Qualified Substitute Mortgage Loan or
Loans shall constitute part of the Trust Fund and shall be subject in all
respects to the terms of this Agreement and the Mortgage Loan Purchase Agreement
including all applicable representations and warranties thereof included herein
or in the Mortgage Loan Purchase Agreement.

                                      -59-
<PAGE>

            For any month in which the Seller substitutes one or more Qualified
Substitute Mortgage Loans for one or more Deleted Mortgage Loans, the Servicer
will determine the amount (the "Substitution Shortfall Amount"), if any, by
which the aggregate Purchase Price of all such Deleted Mortgage Loans exceeds
the aggregate of, as to each such Qualified Substitute Mortgage Loan, the
Scheduled Principal Balance thereof as of the date of substitution, together
with one month's interest on such Scheduled Principal Balance at the applicable
Net Mortgage Rate, plus all outstanding P&I Advances and Servicing Advances
(including Nonrecoverable P&I Advances and Nonrecoverable Servicing Advances)
related thereto. On the date of such substitution, the Seller will deliver or
cause to be delivered to the Servicer for deposit in the Collection Account an
amount equal to the Substitution Shortfall Amount, if any, and the Trustee or
the Custodian on behalf of the Trustee, upon receipt of the related Qualified
Substitute Mortgage Loan or Loans, upon receipt of a request for release in the
form attached to the Custodial Agreement and certification by the Servicer of
such deposit, shall release to the Seller the related Mortgage File or Files and
the Trustee shall execute and deliver such instruments of transfer or
assignment, in each case without recourse, representation or warranty, as the
Seller shall deliver to it and as shall be necessary to vest therein any Deleted
Mortgage Loan released pursuant hereto.

            In addition, the Seller shall obtain at its own expense and deliver
to the Trustee and MBIA an Opinion of Counsel to the effect that such
substitution will not cause (a) any federal tax to be imposed on any Trust
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 Trust REMIC
to fail to qualify as a REMIC at any time that any Certificate is outstanding.

            (c) Upon discovery by the Depositor, the Seller, the Servicer or the
Trustee that any Mortgage Loan does not constitute a "qualified mortgage" within
the meaning of Section 860G(a)(3) of the Code, the party discovering such fact
shall within two Business Days give written notice thereof to the other parties.
In connection therewith, the Seller shall repurchase or substitute one or more
Qualified Substitute Mortgage Loans for the affected Mortgage Loan within 90
days of the earlier of discovery or receipt of such notice with respect to such
affected Mortgage Loan. Such repurchase or substitution shall be made by (i) the
Seller if the affected Mortgage Loan's status as a non-qualified mortgage is or
results from a breach of any representation, warranty or covenant made by the
Seller under the Mortgage Loan Purchase Agreement or (ii) the Depositor, if the
affected Mortgage Loan's status as a non-qualified mortgage is a breach of no
representation or warranty. Any such repurchase or substitution shall be made in
the same manner as set forth in Section 2.03(a). The Trustee shall reconvey to
the Seller the Mortgage Loan to be released pursuant hereto in the same manner,
and on the same terms and conditions, as it would a Mortgage Loan repurchased
for breach of a representation or warranty.

            (d) With respect to a breach of the representations made pursuant to
Section 5(xiv) of the Mortgage Loan Purchase Agreement that materially and
adversely affects the value of such Mortgage Loan or the interest therein of the
Certificateholders (determined without regard to the Class A-2B Policy), the
Seller shall be required to take the actions set forth in this Section 2.03.

                                      -60-
<PAGE>

            (e) Within 90 days of the earlier of discovery by the Servicer or
receipt of notice by the Servicer of the breach of any representation, warranty
or covenant of the Servicer set forth in Section 2.05 which materially and
adversely affects the interests of the Certificateholders (determined without
regard to the Class A-2B Policy) in any Mortgage Loan or Prepayment Charge, the
Servicer shall cure such breach in all material respects.

            SECTION 2.04. Representations and Warranties of the Master Servicer.

            The Master Servicer hereby represents, warrants and covenants to the
Servicer, the Depositor and the Trustee, for the benefit of each of the Trustee,
the Certificateholders and MBIA, that as of the Closing Date or as of such date
specifically provided herein:

            (i) The Master Servicer is a national banking association duly
formed, validly existing and in good standing under the laws of the United
States of America and is duly authorized and qualified to transact any and all
business contemplated by this Agreement to be conducted by the Master Servicer;

            (ii) The Master Servicer has the full power and authority to conduct
its business as presently conducted by it and to execute, deliver and perform,
and to enter into and consummate, all transactions contemplated by this
Agreement. The Master Servicer has duly authorized the execution, delivery and
performance of this Agreement, has duly executed and delivered this Agreement,
and this Agreement, assuming due authorization, execution and delivery by the
Depositor and the Trustee, constitutes a legal, valid and binding obligation of
the Master Servicer, enforceable against it in accordance with its terms except
as the enforceability thereof may be limited by bankruptcy, insolvency,
reorganization or similar laws affecting the enforcement of creditors' rights
generally and by general principles of equity;

            (iii) The execution and delivery of this Agreement by the Master
Servicer, the consummation by the Master Servicer of any other of the
transactions herein contemplated, and the fulfillment of or compliance with the
terms hereof are in the ordinary course of business of the Master Servicer and
will not (A) result in a breach of any term or provision of charter and by-laws
of the Master Servicer or (B) conflict with, result in a breach, violation or
acceleration of, or result in a default under, the terms of any other material
agreement or instrument to which the Master Servicer is a party or by which it
may be bound, or any statute, order or regulation applicable to the Master
Servicer of any court, regulatory body, administrative agency or governmental
body having jurisdiction over the Master Servicer; and the Master Servicer is
not a party to, bound by, or in breach or violation of any indenture or other
agreement or instrument, or subject to or in violation of any statute, order or
regulation of any court, regulatory body, administrative agency or governmental
body having jurisdiction over it, which materially and adversely affects or, to
the Master Servicer's knowledge, would in the future materially and adversely
affect, (x) the ability of the Master Servicer to perform its obligations under
this Agreement or (y) the business, operations, financial condition, properties
or assets of the Master Servicer taken as a whole;

            (iv) The Master Servicer does not believe, nor does it have any
reason or cause to believe, that it cannot perform each and every covenant made
by it and contained in this Agreement;

                                      -61-
<PAGE>

            (v) No litigation is pending against the Master Servicer that would
materially and adversely affect the execution, delivery or enforceability of
this Agreement or the ability of the Master Servicer to perform any of its other
obligations hereunder in accordance with the terms hereof,

            (vi) There are no actions or proceedings against, or investigations
known to it of, the Master Servicer before any court, administrative or other
tribunal (A) that might prohibit its entering into this Agreement, (B) seeking
to prevent the consummation of the transactions contemplated by this Agreement
or (C) that might prohibit or materially and adversely affect the performance by
the Master Servicer of its obligations under, or validity or enforceability of,
this Agreement; and

            (vii) No consent, approval, authorization or order of any court or
governmental agency or body is required for the execution, delivery and
performance by the Master Servicer of, or compliance by the Master Servicer
with, this Agreement or the consummation by it of the transactions contemplated
by this Agreement, except for such consents, approvals, authorizations or
orders, if any, that have been obtained prior to the Closing Date.

            It is understood and agreed that the representations, warranties and
covenants set forth in this Section 2.04 shall survive the resignation or
termination of the parties hereto and the termination of this Agreement and
shall inure to the benefit of the Trustee, the Depositor, MBIA and the
Certificateholders.

            SECTION 2.05. Representations, Warranties and Covenants of the
            Servicer.

            The Servicer hereby represents, warrants and covenants to the Master
Servicer, the Securities Administrator, the Depositor, MBIA and the Trustee, for
the benefit of each of such Persons, MBIA and the Certificateholders that as of
the Closing Date or as of such date specifically provided herein:

            (i) The Servicer is a banking corporation duly organized and validly
      existing under the laws of the State of Ohio and is duly authorized and
      qualified to transact any and all business contemplated by this Agreement
      to be conducted by the Servicer in any state in which a Mortgaged Property
      is located or is otherwise not required under applicable law to effect
      such qualification and, in any event, is in compliance with the doing
      business laws of any such State, to the extent necessary to ensure its
      ability to enforce each Mortgage Loan and to service the Mortgage Loans in
      accordance with the terms of this Agreement;

            (ii) The Servicer has the full power and authority to conduct its
      business as presently conducted by it and to execute, deliver and perform,
      and to enter into and consummate, all transactions contemplated by this
      Agreement. The Servicer has duly authorized the execution, delivery and
      performance of this Agreement, has duly executed and delivered this
      Agreement, and this Agreement, assuming due authorization, execution and
      delivery by the Depositor and the Trustee, constitutes a legal, valid and
      binding obligation of the Servicer, enforceable against it in accordance
      with its terms except as the enforceability thereof may be limited by
      bankruptcy, insolvency, reorganization or similar laws affecting the
      enforcement of creditors' rights generally and by general principles of
      equity;

                                      -62-
<PAGE>

            (iii) The execution and delivery of this Agreement by the Servicer,
      the servicing of the Mortgage Loans by the Servicer hereunder, the
      consummation by the Servicer of any other of the transactions herein
      contemplated, and the fulfillment of or compliance with the terms hereof
      are in the ordinary course of business of the Servicer and will not (A)
      result in a breach of any term or provision of the charter of by-laws of
      the Servicer or (B) conflict with, result in a breach, violation or
      acceleration of, or result in a default under, the terms of any other
      material agreement or instrument to which the Servicer is a party or by
      which it may be bound, or any statute, order or regulation applicable to
      the Servicer of any court, regulatory body, administrative agency or
      governmental body having jurisdiction over the Servicer; and the Servicer
      is not a party to, bound by, or in breach or violation of any indenture or
      other agreement or instrument, or subject to or in violation of any
      statute, order or regulation of any court, regulatory body, administrative
      agency or governmental body having jurisdiction over it, which materially
      and adversely affects or, to the Servicer's knowledge, would in the future
      materially and adversely affect, (x) the ability of the Servicer to
      perform its obligations under this Agreement, (y) the business,
      operations, financial condition, properties or assets of the Servicer
      taken as a whole or (z) the legality, validity or enforceability of this
      Agreement;

            (iv) The Servicer does not believe, nor does it have any reason or
      cause to believe, that it cannot perform each and every covenant made by
      it and contained in this Agreement;

            (v) No litigation is pending against the Servicer that would
      materially and adversely affect the execution, delivery or enforceability
      of this Agreement or the ability of the Servicer to service the Mortgage
      Loans or to perform any of its other obligations hereunder in accordance
      with the terms hereof;

            (vi) There are no actions or proceedings against, or investigations
      known to it of, the Servicer before any court, administrative or other
      tribunal (A) that might prohibit its entering into this Agreement, (B)
      seeking to prevent the consummation of the transactions contemplated by
      this Agreement or (C) that might prohibit or materially and adversely
      affect the performance by the Servicer of its obligations under, or the
      validity or enforceability of, this Agreement;

            (vii) No consent, approval, authorization or order of any court or
      governmental agency or body is required for the execution, delivery and
      performance by the Servicer of, or compliance by the Servicer with, this
      Agreement or the consummation by it of the transactions contemplated by
      this Agreement, except for such consents, approvals, authorizations or
      orders, if any, that have been obtained prior to the Closing Date;

            (viii) The Servicer has fully furnished and will continue to fully
      furnish, in accordance with the Fair Credit Reporting Act and its
      implementing regulations, accurate and complete information (e.g.,
      favorable and unfavorable) on its borrower credit files to Equifax,
      Experian and Trans Union Credit Information Company or their successors on
      a monthly basis; and

                                      -63-
<PAGE>

            (ix) The Servicer will not waive any Prepayment Charge unless it is
      waived in accordance with the standard set forth in Section 3.01.

Notwithstanding anything to the contrary contained in this Agreement, if the
covenant of the Servicer set forth in Section 2.05(ix) above is breached, the
Servicer will pay the amount of such waived Prepayment Charge, from its own
funds without any right of reimbursement, for the benefit of the Holders of the
Class P Certificates, by depositing such amount into the Collection Account
within 90 days of the earlier of discovery by the Servicer or receipt of notice
by the Servicer of such breach. Furthermore, notwithstanding any other
provisions of this Agreement, any payments made by the Servicer in respect of
any waived Prepayment Charges pursuant to this paragraph shall be deemed to be
paid outside of the Trust Fund.

            It is understood and agreed that the representations, warranties and
covenants set forth in this Section 2.05 shall survive the resignation or
termination of the parties hereto, the termination of this Agreement and the
delivery of the Mortgage Files to the Custodian and shall inure to the benefit
of the Trustee, the Master Servicer, the Securities Administrator, the
Depositor, MBIA and the Certificateholders. Upon discovery by any such Person or
the Servicer of a breach of any of the foregoing representations, warranties and
covenants which materially and adversely affects the value of any Mortgage Loan,
Prepayment Charge or the interests therein of the Certificateholders (determined
without regard to the Class A-2B Policy), the party discovering such breach
shall give prompt written notice (but in no event later than two Business Days
following such discovery) to the Trustee. Subject to Section 8.01, unless such
breach shall not be susceptible of cure within 90 days, the obligation of the
Servicer set forth in Section 2.03(c) to cure breaches shall constitute the sole
remedy against the Servicer available to the Certificateholders, the Depositor
or the Trustee on behalf of the Certificateholders respecting a breach of the
representations, warranties and covenants contained in this Section 2.05.

            SECTION 2.06. Issuance of the REMIC I Regular Interests and the
            Class R-I Interest.

            The Trustee acknowledges the assignment to it of the Mortgage Loans
and the delivery to the Custodian on its behalf of the Mortgage Loan Documents,
subject to the provisions of Section 2.01 and Section 2.02 hereof and Section 2
of the Custodial Agreement, together with the assignment to it of all other
assets included in REMIC I, the receipt of which is hereby acknowledged. The
interests evidenced by the Class R-I Interest, together with the REMIC I Regular
Interests, constitute the entire beneficial ownership interest in REMIC I. The
rights of the Holders of the Class R-I Interest and REMIC I (as holder of the
REMIC I Regular Interests) to receive distributions from the proceeds of REMIC I
in respect of the Class R-I Interest and the REMIC I Regular Interests,
respectively, and all ownership interests evidenced or constituted by the Class
R-I Interest and the REMIC I Regular Interests, shall be as set forth in this
Agreement.

            SECTION 2.07. Conveyance of the REMIC I Regular Interests;
            Acceptance of REMIC I by the Trustee.

                                      -64-
<PAGE>

            The Depositor, concurrently with the execution and delivery hereof,
does hereby transfer, assign, set over and otherwise convey to the Trustee,
without recourse all the right, title and interest of the Depositor in and to
the REMIC I Regular Interests for the benefit of the Class R-II Interest and
REMIC II (as holder of the REMIC I Regular Interests). The Trustee acknowledges
receipt of the REMIC I Regular Interests and declares that it holds and will
hold the same in trust for the exclusive use and benefit of all present and
future Holders of the Class R-II Interest and REMIC II (as holder of the REMIC I
Regular Interests). The rights of the Holder of the Class R-II Interest and
REMIC II (as holder of the REMIC I Regular Interests) to receive distributions
from the proceeds of REMIC II in respect of the Class R-II Interest and REMIC II
Regular Interests, respectively, and all ownership interests evidenced or
constituted by the Class R-II Interest and the REMIC II Regular Interests, shall
be as set forth in this Agreement. The Class R-II Interest and the REMIC II
Regular Interests shall constitute the entire beneficial ownership interest in
REMIC II.

            SECTION 2.08. Issuance of Class R Certificates.

            The Trustee acknowledges the assignment to it of the REMIC I Regular
Interests and, concurrently therewith and in exchange therefor, pursuant to the
written request of the Depositor executed by an officer of the Depositor, the
Securities Administrator has executed and authenticated and the Trustee has
delivered to or upon the order of the Depositor, the Class R Certificates in
authorized denominations. The Class R Certificates evidence ownership in the
Class R-I Interest and the Class R-II Interest.

            SECTION 2.09. Establishment of the Trust.

            The Depositor does hereby establish, pursuant to the further
provisions of this Agreement and the laws of the State of New York, an express
trust to be known, for convenience, as "ACE Securities Corp., Home Equity Loan
Trust, Series 2003-HS1" and does hereby appoint Bank One, National Association,
as Trustee in accordance with the provisions of this Agreement.

                                      -65-
<PAGE>

                                   ARTICLE III

                          ADMINISTRATION AND SERVICING
                         OF THE MORTGAGE LOANS; ACCOUNTS

            SECTION 3.01. Servicer to Act as Servicer.

            The Servicer shall service and administer the Mortgage Loans on
behalf of the Trust Fund and in the best interests of and for the benefit of the
Certificateholders and MBIA (as determined by the Servicer in its reasonable
judgment) in accordance with the terms of this Agreement and the respective
Mortgage Loans and all applicable law and regulations and, to the extent
consistent with such terms, in the same manner in which it services and
administers similar mortgage loans for its own portfolio, giving due
consideration to customary and usual standards of practice of prudent mortgage
lenders and loan servicers administering similar mortgage loans but without
regard to:

            (i) any relationship that the Servicer or any Affiliate of the
      Servicer may have with the related Mortgagor;

            (ii) the ownership of any Certificate by the Servicer or any
      Affiliate of the Servicer;

            (iii) the Servicer's obligation to make P&I Advances or Servicing
      Advances; or

            (iv) the Servicer's right to receive compensation for its services
      hereunder.

            To the extent consistent with the foregoing, the Servicer shall also
seek to maximize the timely and complete recovery of principal and interest on
the Mortgage Notes and (b) shall waive (or permit a Sub-Servicer to waive) a
Prepayment Charge only under the following circumstances: (i) such waiver is
standard and customary in servicing similar Mortgage Loans and (ii) such waiver
is related to a default or reasonably foreseeable default and would, in the
reasonable judgement of the Servicer, maximize recovery of total proceeds taking
into account the value of such Prepayment Charge and the related Mortgage Loan
and, if such waiver is made in connection with a refinancing of the related
Mortgage Loan, such refinancing is related to a default or a reasonably
foreseeable default or (iii) such Prepayment Charge is unenforceable in
accordance with applicable law or the collection of such related Prepayment
Charge would otherwise violate applicable law. Notwithstanding any provision in
this Agreement to the contrary, in the event the Prepayment Charge payable under
the terms of the Mortgage Note is less than the amount of the Prepayment Charge
set forth in the Prepayment Charge Schedule or other information provided to the
Servicer, the Servicer shall not have any liability or obligation with respect
to such difference, and in addition shall not have any liability or obligation
to pay the amount of any uncollected Prepayment Charge if the failure to collect
such amount is the direct result of inaccurate or incomplete information on the
Prepayment Charge Schedule.

            Subject only to the above-described servicing standards (the
"Accepted Servicing Practices") and the terms of this Agreement and of the
respective Mortgage Loans, the Servicer shall have

                                      -66-
<PAGE>

full power and authority, to do or cause to be done any and all things in
connection with such servicing and administration which it may deem necessary or
desirable. Without limiting the generality of the foregoing, the Servicer in its
own name is hereby authorized and empowered by the Trustee when the Servicer
believes it appropriate in its best judgment, to execute and deliver, on behalf
of the Trust Fund, the Certificateholders and the Trustee or any of them, and
upon written notice to the Trustee, any and all instruments of satisfaction or
cancellation, or of partial or full release or discharge, and all other
comparable instruments, with respect to the Mortgage Loans and the Mortgaged
Properties and to institute foreclosure proceedings or obtain a deed-in-lieu of
foreclosure so as to convert the ownership of such properties, and to hold or
cause to be held title to such properties, on behalf of the Trustee, for the
benefit of the Trust Fund, the Certificateholders and MBIA. The Servicer shall
service and administer the Mortgage Loans in accordance with applicable state
and federal law and shall provide to the Mortgagors any reports required to be
provided to them thereby. The Servicer shall also comply in the performance of
this Agreement with all reasonable rules and requirements of each insurer under
any standard hazard insurance policy. Subject to Section 3.14, the Trustee shall
execute, at the written request of the Servicer, and furnish to the Servicer any
special or limited powers of attorney and other documents necessary or
appropriate to enable the Servicer to carry out its servicing and administrative
duties hereunder and furnished to the Trustee by the Servicer, and the Trustee
shall not be liable for the actions of the Servicer under such powers of
attorney and shall be indemnified by the Servicer for any cost, liability or
expense incurred by the Trustee in connection with the Servicer's use or misuse
of any such power of attorney.

            In accordance with Accepted Servicing Practices, the Servicer shall
make or cause to be made Servicing Advances as necessary for the purpose of
effecting the payment of taxes and assessments on the Mortgaged Properties,
which Servicing Advances shall be reimbursable in the first instance from
related collections from the Mortgagors pursuant to Section 3.07, and further as
provided in Section 3.09; provided, however, the Servicer shall only make such
Servicing Advance if the Mortgagor has not made such payment, if the failure to
make such Servicing Advance would result in the loss of the Mortgaged Property
due to a tax sale or foreclosure as result of a tax lien. Any cost incurred by
the Servicer in effecting the payment of taxes and assessments on a Mortgaged
Property shall not, for the purpose of calculating the Stated Principal Balance
of a Mortgage Loan or distributions to Certificateholders, be added to the
unpaid principal balance of the related Mortgage Loan, notwithstanding that the
terms of such Mortgage Loan so permit.

            Notwithstanding anything in this Agreement to the contrary, the
Servicer may not make any future advances with respect to a Mortgage Loan and
the Servicer shall not permit any modification with respect to any Mortgage Loan
that would change the Mortgage Rate, reduce or increase the principal balance
(except for reductions resulting from actual payments of principal) or change
the final maturity date on such Mortgage Loan (unless, as provided in Section
3.06, the Mortgagor is in default with respect to the Mortgage Loan or such
default is, in the judgment of the Servicer, reasonably foreseeable) or any
modification, waiver or amendment of any term of any Mortgage Loan that would
both (A) effect an exchange or reissuance of such Mortgage Loan under Section
1001 of the Code (or final, temporary or proposed Treasury regulations
promulgated thereunder) and (B) cause any Trust REMIC created hereunder 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.

                                      -67-
<PAGE>

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

            The Servicer may arrange for the subservicing of any Mortgage Loan
by a Sub- Servicer pursuant to a Sub-Servicing Agreement; provided that such
sub-servicing arrangement and the terms of the related Sub-Servicing Agreement
must provide for the servicing of such Mortgage Loans in a manner consistent
with the servicing arrangements contemplated hereunder. Each Sub- Servicer shall
be (i) authorized to transact business in the state or states where 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 (ii) a Freddie Mac or Fannie
Mae approved mortgage servicer. Notwithstanding the provisions of any
Sub-Servicing Agreement, any of the provisions of this Agreement relating to
agreements or arrangements between the Servicer or a Sub-Servicer or reference
to actions taken through a Servicer or otherwise, the Servicer shall remain
obligated and liable to the Depositor, the Trustee, MBIA and the
Certificateholders for the servicing and administration of the Mortgage Loans in
accordance with the provisions of this Agreement 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 Servicer alone
were servicing and administering the Mortgage Loans. Every Sub-Servicing
Agreement entered into by the Servicer shall contain a provision giving the
successor Servicer the option to terminate such agreement in the event a
successor Servicer is appointed. All actions of each Sub-Servicer performed
pursuant to the related Sub-Servicing Agreement shall be performed as an agent
of the Servicer with the same force and effect as if performed directly by the
Servicer.

            For purposes of this Agreement, the Servicer shall be deemed to have
received any collections, recoveries or payments with respect to the Mortgage
Loans that are received by a Sub- Servicer regardless of whether such payments
are remitted by the Sub-Servicer to the Servicer.

            SECTION 3.03. Successor Sub-Servicers.

            Any Sub-Servicing Agreement shall provide that Servicer shall be
entitled to terminate any Sub-Servicing Agreement and to either itself directly
service the related Mortgage Loans or enter into a Sub-Servicing Agreement with
a successor Sub-Servicer which qualifies under Section 3.02. Any Sub-Servicing
Agreement shall include the provision that such agreement may be immediately
terminated by the successor Servicer (which may be the Trustee or the Master
Servicer) without fee, in accordance with the terms of this Agreement, in the
event that the Servicer (or any successor Servicer) shall, for any reason, no
longer be the Servicer (including termination due to a Servicer Event of
Default).

            SECTION 3.04. No Contractual Relationship Between Sub-Servicer,
            Trustee or the Certificateholders.

            Any Sub-Servicing Agreement and any other transactions or services
relating to the Mortgage Loans involving a Sub-Servicer shall be deemed to be
between the Sub-Servicer and the Servicer alone and the Trustee and the
Certificateholders shall not be deemed parties thereto and shall have

                                      -68-
<PAGE>

no claims, rights, obligations, duties or liabilities with respect to any
Sub-Servicer except as set forth in Section 3.05.

            SECTION 3.05. Assumption or Termination of Sub-Servicing Agreement
            by Successor Servicer.

            In connection with the assumption of the responsibilities, duties
and liabilities and of the authority, power and rights of the Servicer hereunder
by a successor Servicer (which may be the Trustee or the Master Servicer)
pursuant to Section 8.02, it is understood and agreed that the Servicer's rights
and obligations under any Sub-Servicing Agreement then in force between the
Servicer and a Sub-Servicer shall be assumed simultaneously by such successor
Servicer without act or deed on the part of such successor Servicer; provided,
however, that any successor Servicer may terminate the Sub-Servicer.

            The Servicer shall, upon the reasonable request of the Master
Servicer, but at the expense of the Servicer, deliver to the assuming party
documents and records relating to each Sub- Servicing Agreement and an
accounting of amounts collected and held by it and otherwise use its best
efforts to effect the orderly and efficient transfer of the Sub-Servicing
Agreements to the assuming party.

            The Servicing Fee payable to any such successor Servicer shall be
payable from payments received on the Mortgage Loans in the amount and in the
manner set forth in this Agreement.

            SECTION 3.06. Collection of Certain Mortgage Loan Payments.

            The 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 Accepted
Servicing Practices, follow such collection procedures as it would follow with
respect to mortgage loans comparable to the Mortgage Loans and held for its own
account. Consistent with the foregoing, the Servicer may in its discretion (i)
waive any late payment charge or, if applicable, penalty interest or (ii) extend
the due dates for the Monthly Payments due on a Mortgage Note for a period of
not greater than 180 days; provided that any extension pursuant to this clause
shall not affect the amortization schedule of any Mortgage Loan for purposes of
any computation hereunder. Notwithstanding the foregoing, in the event that any
Mortgage Loan is in default or, in the judgment of the Servicer, such default is
reasonably foreseeable, the Servicer, consistent with Accepted Servicing
Practices may waive, modify or vary any term of such Mortgage Loan (including
modifications that change the Mortgage Rate, forgive the payment of principal or
interest or extend the final maturity date of such Mortgage Loan), accept
payment from the related Mortgagor of an amount less than the Stated Principal
Balance in final satisfaction of such Mortgage Loan, or consent to the
postponement of strict compliance with any such term or otherwise grant
indulgence to any Mortgagor if in the Servicer's determination such waiver,
modification, postponement or indulgence is not materially adverse to the
interests of the Certificateholders (determined without regard to the Class A-2B
Policy and taking into account any estimated Realized Loss that might result
absent such action).

                                      -69-
<PAGE>

            SECTION 3.07. Collection of Taxes, Assessments and Similar Items;
            Servicing Accounts.

            To the extent the terms of a Mortgage provide for Escrow Payments,
the Servicer shall establish and maintain one or more accounts (the "Servicing
Accounts"), into which all collections from the Mortgagors (or related advances
from Sub-Servicers) for the payment of taxes, assessments, fire, flood, and
hazard insurance premiums, and comparable items for the account of the
Mortgagors ("Escrow Payments") shall be deposited and retained. Servicing
Accounts shall be Eligible Accounts. The Servicer shall deposit in the Servicing
Accounts on a daily basis and in no event later than the second Business Day
after receipt, and retain therein, all Escrow Payments collected on account of
the Mortgage Loans, for the purpose of effecting the timely payment of any such
items as required under the terms of this Agreement. Withdrawals of amounts from
a Servicing Account may be made only to (i) effect timely payment of taxes,
assessments, fire, flood, and hazard insurance premiums, and comparable items;
(ii) reimburse the Servicer out of related collections for any advances made
pursuant to Section 3.01 (with respect to taxes and assessments) and Section
3.11 (with respect to fire, flood and hazard insurance); (iii) refund to
Mortgagors any sums as may be determined to be overages; (iv) pay interest, if
required and as described below, to Mortgagors on balances in the Servicing
Account; or (v) clear and terminate the Servicing Account at the termination of
the Servicer's obligations and responsibilities in respect of the Mortgage Loans
under this Agreement in accordance with Article X. As part of its servicing
duties, the Servicer shall pay to the Mortgagors interest on funds in Servicing
Accounts, to the extent required by law and, to the extent that interest earned
on funds in the Servicing Accounts is insufficient, to pay such interest from
its or their own funds, without any reimbursement therefor. Notwithstanding the
foregoing, the Servicer shall not be obligated to collect Escrow Payments if the
related Mortgage Loan does not require such payments but the Servicer shall
nevertheless be obligated to make Servicing Advances as provided in Section 3.01
and Section 3.11. In the event the Servicer shall deposit in the Servicing
Accounts any amount not required to be deposited therein, it may at any time
withdraw such amount from the Servicing Accounts, any provision to the contrary
notwithstanding.

            To the extent that a Mortgage does not provide for Escrow Payments,
the Servicer (i) shall determine whether any such payments are made by the
Mortgagor in a manner and at a time that is necessary to avoid the loss of the
Mortgaged Property due to a tax sale or the foreclosure as a result of a tax
lien and (ii) shall ensure that all insurance required to be maintained on the
Mortgaged Property pursuant to this Agreement is maintained. If any such payment
has not been made and the Servicer receives notice of a tax lien with respect to
the Mortgage Loan being imposed, the Servicer shall, promptly and to the extent
required to avoid loss of the Mortgaged Property, advance or cause to be
advanced funds necessary to discharge such lien on the Mortgaged Property. The
Servicer assumes full responsibility for the payment of all such bills and shall
effect payments of all such bills irrespective of the Mortgagor's faithful
performance in the payment of same or the making of the Escrow Payments and
shall make Servicing Advances to effect such payments subject to its
determination of recoverability.

            SECTION 3.08. Collection Account and Distribution Account.

                                      -70-
<PAGE>

            (a) On behalf of the Trust Fund, the Servicer shall establish and
maintain one or more accounts (such account or accounts, the "Collection
Account"), held in trust for the benefit of the Trustee, the Certificateholders
and MBIA. On behalf of the Trust Fund, the Servicer shall deposit or cause to be
deposited in the Collection Account on a daily basis and in no event later than
two Business Days after receipt, as and when received or as otherwise required
hereunder, the following payments and collections received or made by it on or
subsequent to 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 (net of the related
            Servicing Fee) on each Mortgage Loan;

                  (iii) all Insurance Proceeds and Liquidation Proceeds (other
            than proceeds collected in respect of any particular REO Property
            and amounts paid by the Servicer in connection with a purchase of
            Mortgage Loans and REO Properties pursuant to Section 10.01);

                  (iv) any amounts required to be deposited pursuant to Section
            3.10 in connection with any losses realized on Permitted Investments
            with respect to funds held in the Collection Account;

                  (v) any amounts required to be deposited by the Servicer
            pursuant to the second paragraph of Section 3.11(a) in respect of
            any blanket policy deductibles;

                  (vi) any Purchase Price or Substitution Shortfall Amount
            delivered to the Servicer and all proceeds (net of amounts payable
            or reimbursable to the Servicer, the Master Servicer, the Trustee,
            the Custodian or the Securities Administrator) of Mortgage Loans
            purchased in accordance with Section 2.03, Section 3.13 or Section
            10.01; and

                  (vii) any Prepayment Charges collected by the Servicer in
            connection with the Principal Prepayment of any of the Mortgage
            Loans or amounts required to be deposited by the Servicer in
            connection with a breach of its obligations under Section 3.01.

            The foregoing requirements for deposit in the Collection Account
shall be exclusive, it being understood and agreed that, without limiting the
generality of the foregoing, payments in the nature of late payment charges,
assumption fees or other similar fees need not be deposited by the Servicer in
the Collection Account and may be retained by the Servicer as additional
compensation. In the event the Servicer shall deposit in the Collection Account
any amount not required to be deposited therein, it may at any time withdraw
such amount from the Collection Account, any provision herein to the contrary
notwithstanding.

                                      -71-
<PAGE>

            (b) On behalf of the Trust Fund, the Securities Administrator shall
establish and maintain one or more accounts (such account or accounts, the
"Distribution Account"), held in trust for the benefit of the Securities
Administrator, the Trust Fund, the Certificateholders and MBIA. On behalf of the
Trust Fund, the Servicer shall deliver to the Trustee in immediately available
funds for deposit in the Distribution Account (i) on or before 12:00 noon New
York time on the Servicer Remittance Date, that portion of the Available
Distribution Amount (calculated without regard to the references in clause (2)
of the definition thereof to amounts that may be withdrawn from the Distribution
Account) for the related Distribution Date then on deposit in the Collection
Account and the amount of all Prepayment Charges collected by the Servicer in
connection with the Principal Prepayment of any of the Mortgage Loans then on
deposit in the Collection Account and the amount of any funds reimbursable to an
Advance Financing Person pursuant to Section 3.25, and (ii) on each Business Day
as of the commencement of which the balance on deposit in the Collection Account
exceeds $75,000 following any withdrawals pursuant to the next succeeding
sentence, the amount of such excess, but only if the Collection Account
constitutes an Eligible Account solely pursuant to clause (ii) of the definition
of "Eligible Account." If the balance on deposit in the Collection Account
exceeds $75,000 as of the commencement of business on any Business Day and the
Collection Account constitutes an Eligible Account solely pursuant to clause
(ii) of the definition of "Eligible Account," the Servicer shall, on or before
5:00 p.m. New York time on such Business Day, withdraw from the Collection
Account any and all amounts payable or reimbursable to the Depositor, the
Servicer, the Trustee, the Master Servicer, the Securities Administrator or the
Seller pursuant to Section 3.09(a) and shall pay such amounts to the Persons
entitled thereto.

            (c) Funds in the Collection Account and the Distribution Account may
be invested in Permitted Investments in accordance with the provisions set forth
in Section 3.10. The Servicer shall give notice to the Trustee, the Securities
Administrator, MBIA and the Master Servicer of the location of the Collection
Account maintained by it when established and prior to any change thereof. The
Securities Administrator shall give notice to the Servicer, MBIA and the
Depositor of the location of the Distribution Account when established and prior
to any change thereof.

            (d) Funds held in the Collection Account at any time may be
delivered by the Servicer in immediately available funds to the Securities
Administrator for deposit in the Distribution Account. In the event the Servicer
shall deliver to the Securities Administrator for deposit in the Distribution
Account any amount not required to be deposited therein, it may at any time
request that the Securities Administrator withdraw such amount from the
Distribution Account and remit to it any such amount, any provision herein to
the contrary notwithstanding. In no event shall the Securities Administrator
incur liability as a result of withdrawals from the Distribution Account at the
direction of the Servicer in accordance with the immediately preceding sentence.
In addition, the Servicer shall deliver to the Securities Administrator no later
than the Servicer Remittance Date the amounts set forth in clauses (i) through
(iv) below:

                  (i) any P&I Advances, as required pursuant to Section 5.03;

                  (ii) any amounts required to be deposited pursuant to Section
            3.21(d) or 3.21(f) in connection with any REO Property;

                                      -72-
<PAGE>

                  (iii) any amounts to be paid in connection with a purchase of
            Mortgage Loans and REO Properties pursuant to Section 10.01; and

                  (iv) any amounts required to be deposited pursuant to Section
            3.22 in connection with any Prepayment Interest Shortfalls.

            SECTION 3.09. Withdrawals from the Collection Account and
            Distribution Account.

                  (a) The Servicer shall, from time to time, make withdrawals
from the Collection Account for any of the following purposes or as described in
Section 5.03:

                  (i) to remit to the Securities Administrator for deposit in
            the Distribution Account the amounts required to be so remitted
            pursuant to Section 3.08(b) or permitted to be so remitted pursuant
            to the first sentence of Section 3.08(d);

                  (ii) subject to Section 3.13(d), to reimburse the Servicer
            (including any successor Servicer) for P&I Advances made by it, but
            only to the extent of amounts received which represent Late
            Collections (net of the related Servicing Fees) of Monthly Payments
            on Mortgage Loans with respect to which such P&I Advances were made
            in accordance with the provisions of Section 5.03;

                  (iii) subject to Section 3.13(d), to pay the Servicer any
            unpaid Servicing Fees and reimburse the Servicer any unreimbursed
            Servicing Advances with respect to each Mortgage Loan, but only to
            the extent of any Liquidation Proceeds and Insurance Proceeds
            received with respect to such Mortgage Loan;

                  (iv) to pay to the Servicer as servicing compensation (in
            addition to the Servicing Fee) on the Servicer Remittance Date any
            interest or investment income earned on funds deposited in the
            Collection Account;

                  (v) to pay to the Servicer or the Seller, as the case may be,
            with respect to each Mortgage Loan that has previously been
            purchased or replaced pursuant to Section 2.03 or Section 3.13(c)
            all amounts received thereon not included in the Purchase Price or
            the Substitution Shortfall Amount;

                  (vi) to reimburse the Servicer (including any successor
            Servicer) for any P&I Advance or Servicing Advance previously made
            by it which the Servicer has determined to be a Nonrecoverable P&I
            Advance or a Nonrecoverable Servicing Advance in accordance with the
            provisions of Section 5.03;

                                      -73-
<PAGE>

                  (vii) to reimburse the Servicer or the Depositor for expenses
            incurred by or reimbursable to the Servicer or the Depositor, as the
            case may be, pursuant to Section 3.01 or Section 7.03;

                  (viii) to reimburse the Servicer, the Master Servicer, the
            Securities Administrator or the Trustee, as the case may be, for
            expenses reasonably incurred in respect of the breach or defect
            giving rise to the purchase obligation under Section 2.03 of this
            Agreement that were included in the Purchase Price of the Mortgage
            Loan, including any expenses arising out of the enforcement of the
            purchase obligation;

                  (ix) to pay, or to reimburse the Servicer for advances in
            respect of, expenses incurred in connection with any Mortgage Loan
            pursuant to Section 3.13(b); and

                  (x) to clear and terminate the Collection Account pursuant to
            Section 10.01.

            The Servicer shall keep and maintain separate accounting, on a
Mortgage Loan by Mortgage Loan basis, for the purpose of justifying any
withdrawal from the Collection Account, to the extent held by or on behalf of
it, pursuant to subclauses (ii), (iii), (v), (vi), (vii), (viii), (ix) and (x)
above. The Servicer shall provide written notification to the Securities
Administrator on or prior to the next succeeding Servicer Remittance Date, upon
making any withdrawals from the Collection Account pursuant to subclauses (vi)
and (vii) above.

                  (b) The Securities Administrator shall, from time to time,
make withdrawals from the Distribution Account, for any of the following
purposes, without priority:

                  (i) to make distributions to Certificateholders in accordance
            with Section 5.01;

                  (ii) to pay to itself, the Custodian, the Master Servicer and
            the Trustee amounts to which it is entitled pursuant to Section 9.05
            or any other provision of this Agreement and any Extraordinary Trust
            Fund Expenses;

                  (iii) to reimburse itself or the Master Servicer pursuant to
            Section 8.02;

                  (v) to pay to an Advance Financing Person reimbursements for
            P&I Advances and/or Servicing Advances pursuant to Section 3.25;

                  (vi) to pay any amounts in respect of taxes pursuant to
            Section 11.01(g)(v);

                  (vii) to pay the Master Servicing Fee to the Master Servicer;

                  (viii) to pay the Credit Risk Management Fee to the Credit
            Risk Manager;

                                      -74-
<PAGE>

                  (ix) to pay the MGIC Fee to MGIC; and

                  (x) to clear and terminate the Distribution Account pursuant
            to Section 10.01.

            SECTION 3.10. Investment of Funds in the Investment Accounts.

                  (a) The Servicer may direct, by means of written directions
(which may be standing directions), any depository institution maintaining the
Collection Account to invest the funds in the Collection Account (for purposes
of this Section 3.10, an "Investment Account") in one or more Permitted
Investments bearing interest or sold at a discount, and maturing, unless payable
on demand, (i) no later than 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.
Amounts in the Distribution Account may be invested in Permitted Investments as
directed in writing by the Master Servicer. All such Permitted Investments shall
be held to maturity, unless payable on demand. Any investment of funds shall be
made in the name of the Trustee (in its capacity as such) or in the name of a
nominee of the Trustee. The Trustee shall be entitled to sole possession over
each such investment and, subject to subsection (b) below, the income thereon,
and any certificate or other instrument evidencing any such investment shall be
delivered directly to the Trustee or its agent, together with any document of
transfer necessary to transfer title to such investment to the Trustee or its
nominee. In the event amounts on deposit in the Collection Account are at any
time invested in a Permitted Investment payable on demand, the party with
investment discretion over such Investment Account shall:

                  (x) consistent with any notice required to be given
            thereunder, demand that payment thereon be made on the last day such
            Permitted Investment may otherwise mature hereunder in an amount
            equal to the lesser of (1) all amounts then payable thereunder and
            (2) the amount required to be withdrawn on such date; and

                  (y) demand payment of all amounts due thereunder promptly upon
            determination by a Responsible Officer of the Trustee that such
            Permitted Investment would not constitute a Permitted Investment in
            respect of funds thereafter on deposit in the Investment Account.

                  (b) All income and gain realized from the investment of funds
deposited in the Collection Account held by or on behalf of the Servicer or the
Trustee, shall be for the benefit of the Servicer and shall be subject to its
withdrawal in accordance with Section 3.09. The Servicer shall deposit in the
Collection Account the amount of any loss incurred in respect of any such
Permitted Investment made with funds in such account immediately upon
realization of such loss. All earnings and gain realized from the investment of
funds deposited in the Distribution Account shall be for the benefit of the
Master Servicer. The Master Servicer shall remit from its own funds for deposit
into the Distribution Account the amount of any loss incurred on Permitted
Investments in the Distribution Account.

                                      -75-
<PAGE>

                  (c) Except as otherwise expressly provided in this Agreement,
if any default occurs in the making of a payment due under any Permitted
Investment, or if a default occurs in any other performance required under any
Permitted Investment, the Trustee may and, subject to Section 9.01 and Section
9.02(a)(v), shall, at the written direction of the Servicer, take such action as
may be appropriate to enforce such payment or performance, including the
institution and prosecution of appropriate proceedings.

                  (d) The Trustee, the Master Servicer or their respective
Affiliates are permitted to receive additional compensation that could be deemed
to be in the Trustee's or the Master Servicer's economic self-interest for (i)
serving as investment adviser, administrator, shareholder servicing agent,
custodian or sub-custodian with respect to certain of the Permitted Investments,
(ii) using Affiliates to effect transactions in certain Permitted Investments
and (iii) effecting transactions in certain Permitted Investments. Such
compensation shall not be considered an amount that is reimbursable or payable
to the Trustee or the Master Servicer pursuant to Section 3.09 or 3.10 or
otherwise payable in respect of Extraordinary Trust Fund Expenses.

            SECTION 3.11. Maintenance of Hazard Insurance, Errors and Omissions
            and Fidelity Coverage and Primary Mortgage Insurance.

            (a) The terms of each Mortgage Note require the related Mortgagor to
maintain fire, flood and hazard insurance policies. To the extent such policies
are not maintained, the Servicer shall cause to be maintained for each Mortgaged
Property fire and hazard insurance with extended coverage as is customary in the
area where the Mortgaged Property is located in an amount which is at least
equal to the lesser of the current principal balance of such Mortgage Loan and
the amount necessary to compensate fully for any damage or loss to the
improvements which are a part of such property on a replacement cost basis, in
each case in an amount not less than such amount as is necessary to avoid the
application of any coinsurance clause contained in the related hazard insurance
policy. The Servicer shall also cause to be maintained fire and hazard insurance
on each REO Property with extended coverage as is customary in the area where
the Mortgaged Property is located in an amount which is at least equal to the
lesser of (i) the maximum insurable value of the improvements which are a part
of such property and (ii) the outstanding principal balance of the related
Mortgage Loan at the time it became an REO Property. The Servicer will comply in
the performance of this Agreement with all reasonable rules and requirements of
each insurer under any such hazard policies. Any amounts to be collected by the
Servicer under any such policies (other than amounts to be applied to the
restoration or repair of the property subject to the related Mortgage or amounts
to be released to the Mortgagor in accordance with Accepted Servicing Practices,
subject to the terms and conditions of the related Mortgage and Mortgage Note)
shall be deposited in the Collection Account, subject to withdrawal pursuant to
Section 3.09, if received in respect of a Mortgage Loan, or in the REO Account,
subject to withdrawal pursuant to Section 3.21, if received in respect of an REO
Property. Any cost incurred by the Servicer in maintaining any such insurance
shall not, for the purpose of calculating distributions to Certificateholders,
be added to the unpaid principal balance of the related Mortgage Loan,
notwithstanding that the terms of such Mortgage Loan so permit. It is understood
and agreed that no earthquake or other additional insurance is to be required of
any Mortgagor other than pursuant to such applicable laws and regulations as
shall at any time be in force and as shall require such

                                      -76-
<PAGE>

additional insurance. If the Mortgaged Property or REO Property is at any time
in an area identified in the Federal Register by the Federal Emergency
Management Agency as having special flood hazards, the Servicer will cause to be
maintained a flood insurance policy in respect thereof. Such flood insurance
shall be in an amount equal to the lesser of (i) the unpaid principal balance of
the related Mortgage Loan and (ii) the maximum amount of such insurance
available for the related Mortgaged Property under the national flood insurance
program (assuming that the area in which such Mortgaged Property is located is
participating in such program).

            In the event that the Servicer shall obtain and maintain a blanket
policy with an insurer having a General Policy Rating of A:X or better in Best's
Key Rating Guide or otherwise acceptable to Fannie Mae or Freddie Mac insuring
against hazard losses on all of the Mortgage Loans, it shall conclusively be
deemed to have satisfied its obligations to cause fire and hazard insurance to
be maintained on the Mortgaged Properties, it being understood and agreed that
such policy may contain a deductible clause, in which case the Servicer shall,
in the event that there shall not have been maintained on the related Mortgaged
Property or REO Property a policy complying with the first two sentences of this
Section 3.11, and there shall have been one or more losses which would have been
covered by such policy, deposit to the Collection Account from its own funds the
amount not otherwise payable under the blanket policy because of such deductible
clause. In connection with its activities as administrator and servicer of the
Mortgage Loans, the Servicer agrees to prepare and present, on behalf of itself,
the Trustee, the Trust Fund and the Certificateholders, claims under any such
blanket policy in a timely fashion in accordance with the terms of such policy.

            (b) The Servicer shall keep in force during the term of this
Agreement a policy or policies of insurance covering errors and omissions for
failure in the performance of its respective obligations under this Agreement,
which policy or policies shall be in such form and amount that would meet the
requirements of Fannie Mae or Freddie Mac if it were the purchaser of the
Mortgage Loans, unless the Servicer, has obtained a waiver of such requirements
from Fannie Mae or Freddie Mac. The Servicer shall each also maintain a fidelity
bond in the form and amount that would meet the requirements of Fannie Mae or
Freddie Mac, unless the Servicer, has obtained a waiver of such requirements
from Fannie Mae or Freddie Mac. The Servicer shall be deemed to have complied
with this provision if an Affiliate of the Servicer, has such errors and
omissions and fidelity bond coverage and, by the terms of such insurance policy
or fidelity bond, the coverage afforded thereunder extends to the Servicer. Any
such errors and omissions policy and fidelity bond shall by its terms not be
cancelable without thirty days' prior written notice to the Trustee and MBIA.

            (c) The Servicer shall not take any action that would result in
noncoverage under the MGIC PMI Policy or any other applicable primary mortgage
insurance policy of any loss which, but for the actions of the Servicer would
have been covered thereunder. The Servicer shall use its best efforts to keep in
force and effect the MGIC PMI Policy and, to the extent that the Mortgage Loan
requires the Mortgagor to maintain such insurance, any other primary mortgage
insurance applicable to any Mortgage Loan. Except as required by applicable law
or the related Mortgage Loan Documents, the Servicer shall not cancel or refuse
to renew any such primary mortgage insurance policy that is in effect at the
date of the initial issuance of the Mortgage Note and is required to be kept in
force hereunder.

                                      -77-
<PAGE>

            The Servicer agrees to present on behalf of the Trustee, the
Certificateholders and MBIA, claims to MGIC under the MGIC PMI Policy or the
applicable insurer under any other primary mortgage insurance policies and, in
this regard, to take such reasonable action as shall be necessary to permit
recovery under the MGIC PMI Policy or any other primary mortgage insurance
policies respecting defaulted Mortgage Loans. Pursuant to Section 3.08, any
amounts collected by the Servicer under the MGIC PMI Policy or any other primary
mortgage insurance policies shall be deposited in the Collection Account,
subject to withdrawal pursuant to Section 3.09.

            SECTION 3.12. Enforcement of Due-on-Sale Clauses; Assumption
            Agreements.

            The Servicer shall, to the extent it has knowledge of any conveyance
of any Mortgaged Property by any Mortgagor (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 and/or the Mortgage), exercise its rights to
accelerate the maturity of such Mortgage Loan under the "due-on- sale" clause,
if any, applicable thereto; provided, however, that the Servicer shall not
exercise any such rights if prohibited by law from doing so. If the Servicer
reasonably believes it is unable under applicable law to enforce such
"due-on-sale" clause, or if any of the other conditions set forth in the proviso
to the preceding sentence apply, the Servicer shall enter into an assumption and
modification agreement from or 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. The 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,
provided that no such substitution shall be effective unless such person
satisfies the then current underwriting criteria of the Servicer for mortgage
loans similar to the Mortgage Loans. In connection with any assumption or
substitution, the Servicer shall apply such underwriting standards and follow
such practices and procedures as shall be normal and usual in its general
mortgage servicing activities and as it applies to other mortgage loans owned
solely by it. The Servicer shall not take or enter into any assumption and
modification agreement, however, unless (to the extent practicable in the
circumstances) it shall have received confirmation, in writing, of the continued
effectiveness of any applicable hazard insurance policy. Any fee collected by
the Servicer in respect of an assumption or substitution of liability agreement
will be retained by the Servicer as additional servicing compensation. In
connection with any such assumption, no material term of the Mortgage Note
(including but not limited to the related Mortgage Rate and the amount of the
Monthly Payment) may be amended or modified, except as otherwise required
pursuant to the terms thereof. The Servicer shall notify the Trustee (or the
Custodian) that any such substitution or assumption agreement has been completed
by forwarding to the Trustee the executed original of such substitution or
assumption agreement, which document 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.

            Notwithstanding the foregoing paragraph or any other provision of
this Agreement, the 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 by the terms of the Mortgage Note or any
assumption which the Servicer may be restricted by law from preventing, for any
reason whatever.

                                      -78-
<PAGE>

For purposes of this Section 3.12, the term "assumption" is deemed to also
include a sale (of the Mortgaged Property) subject to the Mortgage that is not
accompanied by an assumption or substitution of liability agreement.

            SECTION 3.13. Realization Upon Defaulted Mortgage Loans.

            (a) The Servicer shall use its best efforts, consistent with
Accepted Servicing Practices, to foreclose upon or otherwise comparably convert
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 3.06. The Servicer shall
be responsible for all costs and expenses incurred by it in any such
proceedings; provided, however, that such costs and expenses will be recoverable
as Servicing Advances by the Servicer as contemplated in Sections 3.09 and 3.21.
The foregoing is subject to the provision that, in any case in which a Mortgaged
Property shall have suffered damage from an Uninsured Cause, the Servicer shall
not be required to expend its own funds toward the restoration of such property
unless it shall determine in its discretion that such restoration will increase
the proceeds of liquidation of the related Mortgage Loan after reimbursement to
itself for such expenses.

            (b) Notwithstanding the foregoing provisions of this Section 3.13 or
any other provision of this Agreement, with respect to any Mortgage Loan as to
which the Servicer has received actual notice of, or has actual knowledge of,
the presence of any toxic or hazardous substance on the related Mortgaged
Property, the Servicer shall not, on behalf of the Trust Fund, either (i) obtain
title to such Mortgaged Property as a result of or in lieu of foreclosure or
otherwise, or (ii) otherwise acquire possession of, or take any other action
with respect to, such Mortgaged Property, if, as a result of any such action,
the Trust Fund, the Trustee or the Certificateholders would be considered to
hold title to, to be a "mortgagee-in-possession" of, or to be an "owner" or
"operator" of such Mortgaged Property within the meaning of the Comprehensive
Environmental Response, Compensation and Liability Act of 1980, as amended from
time to time, or any comparable law, unless the Servicer has also previously
determined, based on its reasonable judgment and a prudent report prepared by an
Independent Person who regularly conducts environmental audits using customary
industry standards, that:

            (1) such Mortgaged Property is in compliance with applicable
      environmental laws or, if not, that it would be in the best economic
      interest of the Trust Fund to take such actions as are necessary to bring
      the Mortgaged Property into compliance therewith; and

            (2) there are no circumstances present at such Mortgaged Property
      relating to the use, management or disposal of any hazardous substances,
      hazardous materials, hazardous wastes or petroleum-based materials for
      which investigation, testing, monitoring, containment, clean-up or
      remediation could be required under any federal, state or local law or
      regulation, or that if any such materials are present for which such
      action could be required, that it would be in the best economic interest
      of the Trust Fund to take such actions with respect to the affected
      Mortgaged Property.

                                      -79-
<PAGE>

            The cost of the environmental audit report contemplated by this
Section 3.13 shall be advanced by the Servicer, subject to the Servicer's right
to be reimbursed therefor from the Collection Account as provided in Section
3.09(a)(ix), such right of reimbursement being prior to the rights of
Certificateholders to receive any amount in the Collection Account received in
respect of the affected Mortgage Loan or other Mortgage Loans.

            If the 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 into 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 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,
cleanup or remediation shall be advanced by the Servicer, subject to the
Servicer's right to be reimbursed therefor from the Collection Account as
provided in Sections 3.09(a)(iii) or 3.09(a)(ix), such right of reimbursement
being prior to the rights of Certificateholders to receive any amount in the
Collection Account received in respect of the affected Mortgage Loan or other
Mortgage Loans.

            (c) The Servicer shall have the right to purchase from REMIC I any
defaulted Mortgage Loan that is 90 days or more delinquent, which the Servicer
determines in good faith will otherwise become subject to foreclosure
proceedings (evidence of such determination to be delivered in writing to the
Trustee, in form and substance satisfactory to the Servicer and the Trustee
prior to purchase), at a price equal to the Purchase Price. The Purchase Price
for any Mortgage Loan purchased hereunder shall be deposited in the Collection
Account, and the Trustee, upon receipt of written certification from the
Servicer of such deposit, shall release or cause to be released to the Servicer
the related Mortgage File and the Trustee shall execute and deliver such
instruments of transfer or assignment, in each case without recourse,
representation or warranty, as the Servicer shall furnish and as shall be
necessary to vest in the Servicer title to any Mortgage Loan released pursuant
hereto.

            (d) Proceeds received in connection with any Final Recovery
Determination, as well as any recovery resulting from a partial collection of
Insurance Proceeds or Liquidation Proceeds, in respect of any Mortgage Loan,
will be applied in the following order of priority: first, to reimburse the
Servicer for any related unreimbursed Servicing Advances and P&I Advances,
pursuant to Section 3.09(a)(ii) or (a)(iii); second, to accrued and unpaid
interest on the Mortgage Loan, to the date of the Final Recovery Determination,
or to the Due Date prior to the Distribution Date on which such amounts are to
be distributed if not in connection with a Final Recovery Determination; and
third, as a recovery of principal of the Mortgage Loan. If the amount of the
recovery so allocated to interest is less than the full amount of accrued and
unpaid interest due on such Mortgage Loan, the amount of such recovery will be
allocated by the Servicer as follows: first, to unpaid Servicing Fees; and
second, to the balance of the interest then due and owing. The portion of the
recovery so allocated to unpaid Servicing Fees shall be reimbursed to the
Servicer pursuant to Section 3.09(a)(iii). The portion of the recovery allocated
to interest (net of unpaid Servicing Fees) and the portion of the recovery
allocated to principal of the Mortgage Loan shall be applied as follows: first,
to reimburse the Servicer for any related unreimbursed Advances in accordance
with Section 3.09(a)(ii) and any other amounts reimbursable to the Servicer
pursuant to Section 3.09, and

                                      -80-
<PAGE>

second, as part of the amounts to be transferred to the Distribution Account in
accordance with Section 3.08(b).

            SECTION 3.14. Trustee to Cooperate; Release of Mortgage Files.

            (a) Upon becoming aware of the payment in full of any Mortgage Loan,
or the receipt by the Servicer of a notification that payment in full has been
escrowed in a manner customary for such purposes for payment to
Certificateholders on the next Distribution Date, the Servicer will promptly
furnish to the Custodian, on behalf of the Trustee, two copies of a request for
release substantially in the form attached to the Custodial Agreement signed by
a Servicing Officer or in a mutually agreeable electronic format which will, in
lieu of a signature on its face, originate from a Servicing Officer (which
certification shall include a statement to the effect that all amounts received
in connection with such payment that are required to be deposited in the
Collection Account have been or will be so deposited) and shall request that the
Custodian, on behalf of the Trustee, deliver to the Servicer the related
Mortgage File. Upon receipt of such certification and request, the Custodian, on
behalf of the Trustee, shall promptly release the related Mortgage File to the
Servicer and the Trustee and Custodian shall have no further responsibility with
regard to such Mortgage File. Upon any such payment in full, the Servicer is
authorized, to give, as agent for the Trustee, as the mortgagee under the
Mortgage that secured the Mortgage Loan, an instrument of satisfaction (or
assignment of mortgage without recourse) regarding the Mortgaged Property
subject to the Mortgage, which instrument of satisfaction or assignment, as the
case may be, shall be delivered to the Person or Persons entitled thereto
against receipt therefor of such payment, it being understood and agreed that no
expenses incurred in connection with such instrument of satisfaction or
assignment, as the case may be, shall be chargeable to the Collection Account.

            (b) From time to time and as appropriate for the servicing or
foreclosure of any Mortgage Loan, the Trustee shall execute such documents as
shall be prepared and furnished to the Trustee by the Servicer (in form
reasonably acceptable to the Trustee) and as are necessary to the prosecution of
any such proceedings. The Custodian, on behalf of the Trustee, shall, upon the
request of the Servicer, and delivery to the Custodian, on behalf of the
Trustee, of two copies of a request for release signed by a Servicing Officer
substantially in the form attached to the Custodial Agreement (or in a mutually
agreeable electronic format which will, in lieu of a signature on its face,
originate from a Servicing Officer), release the related Mortgage File held in
its possession or control to the Servicer. Such trust receipt shall obligate the
Servicer to return the Mortgage File to the Custodian on behalf of the Trustee,
when the need therefor by the Servicer no longer exists unless the Mortgage Loan
shall be liquidated, in which case, upon receipt of a certificate of a Servicing
Officer similar to that hereinabove specified, the Mortgage File shall be
released by the Custodian, on behalf of the Trustee, to the Servicer.

            Notwithstanding the foregoing, in connection with a Principal
Prepayment in full of any Mortgage Loan, the Master Servicer may request release
of the related Mortgage File from the Custodian, in accordance with the
provisions of the Custodial Agreement, in the event the Servicer fails to do so.

            Upon written certification of a Servicing Officer, the Trustee shall
execute and deliver to the Servicer, any court pleadings, requests for trustee's
sale or other documents necessary to the

                                      -81-
<PAGE>

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 certification shall include a request that such
pleadings or documents be executed by the Trustee and a statement 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. So long as no Servicing Termination Event
shall have occurred and be continuing, the Servicer shall have the right to
execute any and all such court pleadings, requests and other documents as
attorney-in-fact for, and on behalf of the Trustee.

            SECTION 3.15. Servicing Compensation.

            As compensation for the activities of the Servicer, hereunder, the
Servicer shall be entitled to the Servicing Fee with respect to each Mortgage
Loan payable solely from payments of interest in respect of such Mortgage Loan,
subject to Section 3.22. In addition, the Servicer shall be entitled to recover
unpaid Servicing Fees out of Insurance Proceeds or Liquidation Proceeds to the
extent permitted by Section 3.09(a)(iii) and out of amounts derived from the
operation and sale of an REO Property to the extent permitted by Section 3.21.
The right to receive the Servicing Fee may not be transferred in whole or in
part except in connection with the transfer of all of the Servicer's
responsibilities and obligations under this Agreement to the extent permitted
herein.

            Additional servicing compensation in the form of assumption fees,
late payment charges and other miscellaneous fees (other than Prepayment
Charges) shall be retained by the Servicer only to the extent such fees or
charges are received by the Servicer. The Servicer shall also be entitled
pursuant to Section 3.09(a)(iv) to withdraw from the Collection Account and
pursuant to Section 3.21(b) to withdraw from any REO Account, as additional
servicing compensation, interest or other income earned on deposits therein,
subject to Section 3.10. The Servicer shall be required to pay all expenses
incurred by it in connection with its servicing activities hereunder and shall
not be entitled to reimbursement therefor except as specifically provided
herein.

            SECTION 3.16. Collection Account Statements.

            Not later than fifteen days after each Distribution Date, the
Servicer shall forward to the Master Servicer, the Securities Administrator, the
Trustee, MBIA and the Depositor a statement prepared by the institution at which
the Collection Account is maintained setting forth the status of the Collection
Account as of the close of business on such Distribution Date and showing, for
the period covered by such statement, the aggregate amount of deposits into and
withdrawals from the Collection Account of each category of deposit specified in
Section 3.08(a) and each category of withdrawal specified in Section 3.09.
Copies of such statement shall be provided by the Securities Administrator to
any Certificateholder and to any Person identified to the Securities
Administrator as a prospective transferee of a Certificate, upon request at the
expense of the requesting party, provided such statement is delivered by the
Servicer to the Securities Administrator.

                                      -82-
<PAGE>

            SECTION 3.17. Statement as to Compliance.

            Not later than February 28th of each calendar year commencing in
2004, the Servicer shall deliver to the Trustee, MBIA, the Master Servicer and
the Depositor an Officers' Certificate (upon which the Master Servicer can
conclusively rely in connection with its obligations under Section 5.06)
stating, as to each signatory thereof, that (i) a review of the activities of
the Servicer during the preceding year and of performance under this Agreement
has been made under such officers' supervision and (ii) to the best of such
officer's knowledge, based on such review, the Servicer has fulfilled all of its
obligations under this Agreement throughout 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. Copies of any such
statement shall be provided by the Trustee to any Certificateholder, upon
request at the expense of the requesting party, provided such statement is
delivered by the Servicer to the Trustee.

            SECTION 3.18. Independent Public Accountants' Servicing Report.

            Not later than February 28th of each calendar year commencing in
2004, the Servicer, at its expense, shall cause a nationally recognized firm of
independent certified public accountants to furnish to the Servicer a report
stating that (i) it has obtained a letter of representation regarding certain
matters from the management of the Servicer which includes an assertion that the
Servicer has complied with certain minimum residential mortgage loan servicing
standards, identified in the Uniform Single Attestation Program for Mortgage
Bankers established by the Mortgage Bankers Association of America, with respect
to the servicing of residential mortgage loans during the most recently
completed fiscal 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 and such firm
has determined that the Servicer has complied in all material respects, subject
to such exceptions and other qualifications that may be appropriate. Immediately
upon receipt of such report, the Servicer shall furnish a copy of such report to
the Master Servicer, the Trustee, MBIA and each Rating Agency. Copies of such
statement shall be provided by the Trustee to any Certificateholder upon request
at the Servicer's expense, provided that such statement is delivered by the
Servicer to the Trustee.

            SECTION 3.19 Annual Certification.

            (a) The Servicer shall deliver to the Master Servicer, on or before
February 28th of each calendar year beginning February 28, 2004 (or, if any such
day is not a Business Day, the immediately preceding Business Day) or such
alternative date reasonably specified by the Master Servicer which shall occur
not earlier than 15 days prior to the date any Form 10-K is required to be filed
with the Commission in connection with the transactions contemplated by this
Agreement, a certification in the form attached hereto as Exhibit C. Such
certification shall be signed by the senior officer in charge of servicing of
the Servicer. In addition, the Servicer shall provide such other information
with respect to the Mortgage Loans and the servicing and administration thereof
within the control of the Servicer which shall be required to enable the Master
Servicer to comply with the reporting requirements of the Securities and
Exchange Act of 1934, as amended pursuant to Section 5.06 hereof.

                                      -83-
<PAGE>

            (b) The Servicer shall indemnify and hold harmless the Master
Servicer, the Securities Administrator, the Trustee, the Depositor and their
respective officers, directors, agents and affiliates from and against any
losses, damages, penalties, fines, forfeitures, reasonable legal fees and
related costs, judgments and other costs and expenses arising out of or based
upon a breach by the Servicer or any of its officers, directors, agents or
affiliates of its obligations under this Section 3.19 or the Servicer's
negligence, bad faith or willful misconduct in connection therewith. Such
indemnity shall survive the termination or resignation of the parties hereto or
the termination of this Agreement. If the indemnification provided for herein is
unavailable or insufficient to hold harmless the Master Servicer, the Securities
Administrator, the Trustee and the Depositor, then the Servicer agrees that it
shall contribute to the amount paid or payable by the Master Servicer, the
Trustee and the Depositor as a result of the losses, claims, damages or
liabilities of the Master Servicer, the Securities Administrator, the Trustee
and the Depositor in such proportion as is appropriate to reflect the relative
fault of the Master Servicer, the Securities Administrator, the Trustee and the
Depositor on the one hand and the Servicer on the other in connection with a
breach of the Servicer's obligations under this Section 3.19.

            SECTION 3.20. Access to Certain Documentation.

            The Servicer shall provide to the Office of Thrift Supervision, the
FDIC, and any other federal or state banking or insurance regulatory authority
that may exercise authority over any Certificate Owner, access to the
documentation regarding the Mortgage Loans required by applicable laws and
regulations. Such access shall be afforded without charge, but only upon
reasonable request and during normal business hours at the offices of the
Servicer designated by it. Nothing in this Section 3.20 shall limit the
obligation of the Servicer to comply with any applicable law prohibiting
disclosure of information regarding the Mortgagors and the failure of the
Servicer to provide access as provided in this Section as a result of such
obligation shall not constitute a breach of this Section. Nothing in this
Section 3.20 shall require the Servicer to collect, create, collate or otherwise
generate any information that it does not generate in its usual course of
business. The Servicer shall not be required to make copies of or ship documents
to any Person unless provisions have been made for the reimbursement of the
costs thereof.

            SECTION 3.21. Title, Management and Disposition of REO Property.

            (a) The deed or certificate of sale of any REO Property shall be
taken in the name of the Trustee, or its nominee, on behalf of the Trust Fund
and for the benefit of the Certificateholders and MBIA. The Servicer, on behalf
of REMIC I, shall either sell any REO Property by the close of the third
calendar year following the calendar year in which REMIC I acquires ownership of
such REO Property for purposes of Section 860(a)(8) of the Code or request from
the Internal Revenue Service, no later 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 Servicer had delivered to the Trustee an Opinion of
Counsel, addressed to the Trustee and the Depositor, to the effect that the
holding by REMIC I of such REO Property subsequent to three years after its
acquisition will not result in the imposition on any Trust REMIC created
hereunder of taxes on "prohibited transactions" thereof, as defined in Section
860F of the Code, or cause any Trust REMIC hereunder to fail to qualify as a
REMIC under Federal law at any time that any Certificates are outstanding. The
Servicer shall manage, conserve, protect and operate each REO Property

                                      -84-
<PAGE>

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) of the Code or
result in the receipt by any Trust REMIC created hereunder 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.

            (b) The 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 and shall establish and maintain with
respect to REO Properties an account held in trust for the Trustee, on behalf of
the Trust Fund and for the benefit of the Certificateholders (the "REO
Account"), which shall be an Eligible Account. The Servicer shall be permitted
to allow the Collection Account to serve as the REO Account, subject to separate
ledgers for each REO Property. The Servicer shall be entitled to retain or
withdraw any interest income paid on funds deposited in the REO Account.

            (c) The Servicer shall have full power and authority, subject only
to the specific requirements and prohibitions of this Agreement, to do any and
all things in connection with any REO Property as are consistent with the manner
in which the Servicer manages and operates similar property owned by the
Servicer or any of its Affiliates, all on such terms and for such period as the
Servicer deems to be in the best interests of Certificateholders. In connection
therewith, the Servicer shall deposit, or cause to be deposited, on a daily
basis in the REO Account all revenues received by it with respect to an REO
Property and shall withdraw therefrom funds necessary for the proper operation,
management and maintenance of such REO Property including, without limitation:

            (i) all insurance premiums due and payable in respect of such REO
      Property;

            (ii) all real estate taxes and assessments in respect of such REO
      Property that may result in the imposition of a lien thereon; and

            (iii) all costs and expenses necessary to maintain such REO
      Property.

            To the extent that amounts on deposit in the REO Account with
respect to an REO Property are insufficient for the purposes set forth in
clauses (i) through (iii) above with respect to such REO Property, the Servicer
shall advance from its own funds such amount as is necessary for such purposes
if, but only if, the Servicer would make such advances if the Servicer owned the
REO Property and if in the Servicer's judgment, the payment of such amounts will
be recoverable from the rental or sale of the REO Property.

            Subject to compliance with applicable laws and regulations as shall
at any time be in force, and notwithstanding the foregoing, the Servicer, on
behalf of the Trust Fund, shall not:

            (i) enter into, renew or extend any New Lease with respect to any
      REO Property, if the New Lease by its terms will give rise to any income
      that does not constitute Rents from Real Property;

                                      -85-
<PAGE>

            (ii) permit any amount to be received or accrued under any New Lease
      other than amounts that will constitute Rents from Real Property;

            (iii) authorize or permit any construction on any REO Property,
      other than the completion of a building or other improvement thereon, and
      then only if more than ten percent of the construction of such building or
      other improvement was completed before default on the related Mortgage
      Loan became imminent, all within the meaning of Section 856(e)(4)(B) of
      the Code; or

            (iv) allow any Person to Directly Operate any REO Property on any
      date more than 90 days after its date of acquisition by the Trust Fund;

unless, in any such case, the Servicer has obtained an Opinion of Counsel,
provided to the Servicer and the Trustee, to the effect that such action will
not cause such REO Property to fail to qualify as "foreclosure property" within
the meaning of Section 860G(a)(8) of the Code at any time that it is held by
REMIC I, in which case the Servicer may take such actions as are specified in
such Opinion of Counsel.

            The Servicer may contract with any Independent Contractor for the
operation and management of any REO Property, provided that:

            (i) the terms and conditions of any such contract shall not be
      inconsistent herewith;

            (ii) any such contract shall require, or shall be administered to
      require, that the Independent Contractor pay all costs and expenses
      incurred in connection with the operation and management of such REO
      Property, including those listed above and remit all related revenues (net
      of such costs and expenses) to the Servicer as soon as practicable, but in
      no event later than thirty days following the receipt thereof by such
      Independent Contractor;

            (iii) none of the provisions of this Section 3.21(c) relating to any
      such contract or to actions taken through any such Independent Contractor
      shall be deemed to relieve the Servicer of any of its duties and
      obligations to the Trustee on behalf of the Trust Fund and for the benefit
      of the Certificateholders with respect to the operation and management of
      any such REO Property; and

            (iv) the Servicer shall be obligated with respect thereto to the
      same extent as if it alone were performing all duties and obligations in
      connection with the operation and management of such REO Property.

            The Servicer shall be entitled to enter into any agreement with any
Independent Contractor performing services for it related to its duties and
obligations hereunder for indemnification of the Servicer by such Independent
Contractor, and nothing in this Agreement shall be deemed to limit or modify
such indemnification. The Servicer shall be solely liable for all fees owed by
it to any such Independent Contractor, irrespective of whether the Servicer's
compensation pursuant to Section 3.15 is sufficient to pay such fees. Any such
agreement shall include a provision that such agreement may be immediately
terminated by the Trustee (as successor Servicer) or any other successor
Servicer (including the Master

                                      -86-
<PAGE>

Servicer) without fee, in the event the Servicer shall for any reason, no longer
be the Servicer (including termination due to a Servicer Event of Default).

            (d) In addition to the withdrawals permitted under Section 3.21(c),
the Servicer may from time to time make withdrawals from the REO Account for any
REO Property: (i) to pay itself unpaid Servicing Fees in respect of the related
Mortgage Loan; and (ii) to reimburse itself or any Sub-Servicer for unreimbursed
Servicing Advances and Advances made in respect of such REO Property or the
related Mortgage Loan. On the Servicer Remittance Date, the Servicer shall
withdraw from each REO Account maintained by it and deposit into the
Distribution Account in accordance with Section 3.08(d)(ii), for distribution on
the related Distribution Date in accordance with Section 5.01, the income from
the related REO Property received during the prior calendar month, net of any
withdrawals made pursuant to Section 3.21(c) or this Section 3.21(d).

            (e) Subject to the time constraints set forth in Section 3.21(a),
each REO Disposition shall be carried out by the Servicer at such price and upon
such terms and conditions as the Servicer shall deem necessary or advisable, as
shall be normal and usual in accordance with Accepted Servicing Practices.

            (f) The proceeds from the REO Disposition, net of any amount
required by law to be remitted to the Mortgagor under the related Mortgage Loan
and net of any payment or reimbursement to the Servicer as provided above, shall
be deposited in the Distribution Account in accordance with Section 3.08(d)(ii)
on the Servicer Remittance Date in the month following the receipt thereof for
distribution on the related Distribution Date in accordance with Section 5.01.
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).

            (g) The Servicer shall file information returns (and shall provide a
certification of a Servicing Officer to the Master Servicer that such filings
have been made) with respect to the receipt of mortgage interest received in a
trade or business, reports of foreclosures and abandonments of any Mortgaged
Property and cancellation of indebtedness income with respect to any Mortgaged
Property as required by Sections 6050H, 6050J and 6050P of the Code,
respectively. 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 3.22. Obligations of the Servicer in Respect of Prepayment
            Interest Shortfalls; Relief Act Interest Shortfalls.

            The Servicer shall deliver to the Securities Administrator for
deposit into the Distribution Account on or before 12:00 noon New York time on
the Servicer Remittance Date from its own funds an amount equal to the lesser of
(i) the aggregate of the Prepayment Interest Shortfalls attributable to
prepayments in full for the related Distribution Date resulting solely from
voluntary Principal Prepayments received by the Servicer during the related
Prepayment Period and (ii) the aggregate Servicing Fee for the most recently
ended Prepayment Period. The Servicer shall not have the right to reimbursement
for any

                                      -87-
<PAGE>

amounts remitted to the Trustee in respect of this Section 3.22. The Servicer
shall not be obligated to pay the amounts set forth in this Section 3.22 with
respect to shortfalls resulting from the application of the Relief Act.

            SECTION 3.23. Obligations of the Servicer in Respect of Mortgage
            Rates and Monthly Payments.

            In the event that a shortfall in any collection on or liability with
respect to any Mortgage Loan results from or is attributable to adjustments to
Mortgage Rates, Monthly Payments or Stated Principal Balances that were made by
the Servicer in a manner not consistent with the terms of the related Mortgage
Note and this Agreement, the Servicer, upon discovery or receipt of notice
thereof, immediately shall deliver to the Securities Administrator for deposit
in the Distribution Account from its own funds the amount of any such shortfall
and shall indemnify and hold harmless the Trust Fund, the Trustee, the
Securities Administrator and the Master Servicer, the Depositor and any
successor Servicer in respect of any such liability. Such indemnities shall
survive the termination or discharge of this Agreement. Notwithstanding the
foregoing, this Section 3.23 shall not limit the ability of the Servicer to seek
recovery of any such amounts from the related Mortgagor under the terms of the
related Mortgage Note and Mortgage, to the extent permitted by applicable law.

            SECTION 3.24. Reserve Fund.

            (a) No later than the Closing Date, the Securities Administrator
shall establish and maintain a separate, segregated trust account entitled,
"Reserve Fund, Wells Fargo Bank Minnesota, National Association, in trust for
the registered holders of ACE Securities Corp. Home Equity Loan Trust, Series
2003-HS1, Asset Backed Pass-Through Certificates." On the Closing Date, the
Depositor will deposit, or cause to be deposited, into the Reserve Fund $1,000.

            (b) On each Distribution Date as to which there is a Net WAC Rate
Carryover Amount payable to the Class A Certificates or the Mezzanine
Certificates, the Securities Administrator shall deposit, into the Reserve Fund
the amounts described in Section 5.01(a)(7)(xvii), rather than distributing such
amounts to the Class CE Certificateholders. On each such Distribution Date, the
Securities Administrator shall hold all such amounts for the benefit of the
Holders of the Class A Certificates and the Mezzanine Certificates, and will
distribute such amounts to the Holders of the Class A Certificates and the
Mezzanine Certificates in the amounts and priorities set forth in Section
5.01(a). If no Net WAC Rate Carryover Amounts are payable on a Distribution
Date, the Securities Administrator shall deposit into the Reserve Fund on behalf
of the Class CE Certificateholders, from amounts otherwise distributable to the
Class CE Certificateholders, an amount such that when added to other amounts
already on deposit in the Reserve Fund, the aggregate amount on deposit therein
is equal to $1,000.

            (c) For federal and state income tax purposes, the Class CE
Certificateholders will be deemed to be the owners of the Reserve Fund and all
amounts deposited into the Reserve Fund (other than the initial deposit therein
of $1,000) shall be treated as amounts distributed by REMIC II to the Holders of
the Class CE Certificates. Upon the termination of the Trust Fund, or the
payment in full of the Class

                                      -88-
<PAGE>

A Certificates and the Mezzanine Certificates, all amounts remaining on deposit
in the Reserve Fund will be released by the Trust Fund and distributed to the
Class CE Certificateholders or their designees. The Reserve Fund will be part of
the Trust Fund but not part of any REMIC and any payments to the Holders of the
Class A Certificates or the Mezzanine Certificates of Net WAC Rate Carryover
Amounts will not be payments with respect to a "regular interest" in a REMIC
within the meaning of Code Section 860(G)(a)(1).

            (d) By accepting a Class CE Certificate, each Class CE
Certificateholder hereby agrees that the Securities Administrator will deposit
into the Reserve Fund the amounts described above on each Distribution Date
rather than distributing such amounts to the Class CE Certificateholders. By
accepting a Class CE Certificate, each Class CE Certificateholder further agrees
that its agreement to such action by the Securities Administrator is given for
good and valuable consideration, the receipt and sufficiency of which is
acknowledged by such acceptance.

            (e) At the direction of the Holders of a majority in Percentage
Interest in the Class CE Certificates, the Securities Administrator shall direct
any depository institution maintaining the Reserve Fund to invest the funds in
such account in one or more Permitted Investments bearing interest or sold at a
discount, and maturing, unless payable on demand, (i) no later than 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 Securities Administrator or an Affiliate manages or advises such investment,
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 Securities Administrator or
an Affiliate manages or advises such investment. All income and gain earned upon
such investment shall be deposited into the Reserve Fund. In no event shall the
Securities Administrator be liable for any investments made pursuant to this
clause (e). If the Holders of a majority in Percentage Interest in the Class CE
Certificates fail to provide investment instructions, funds on deposit in the
Reserve Fund shall be held uninvested by the Securities Administrator without
liability for interest or compensation.

            (f) For federal tax return and information reporting, the right of
the Class A Certificateholders and the Mezzanine Certificateholders to receive
payments from the Reserve Fund in respect of any Net WAC Rate Carryover Amount
shall be assigned a value of zero.

            SECTION 3.25. Advance Facility.

            (a) Notwithstanding anything to the contrary contained herein, (i)
the Servicer is hereby authorized to enter into an advance facility ("Advance
Facility") under which (A) the Servicer sells, assigns or pledges to an
advancing person the Servicer's rights under this Agreement to be reimbursed for
any Advances or Servicing Advances and/or (B) an advancing person agrees to fund
some or all Advances or Servicing Advances required to be made by the Servicer
pursuant to this Agreement and (ii) the Servicer is hereby authorized to assign
its rights to the Servicing Fee (which rights shall terminate upon the
resignation, termination or removal of the Servicer pursuant to the terms of
this Agreement); it being understood that neither the Trust Fund nor any party
hereto shall have a right or claim (including without limitation any right of
offset) to the portion of the Servicing Fee so assigned. No consent of the
Depositor,

                                      -89-
<PAGE>

Trustee, MBIA, Certificateholders or any other party is required before the
Servicer may enter into an Advance Facility, but the Servicer shall provide
notice to the Depositor, Master Servicer and the Trustee of the existence of any
such Advance Facility promptly upon the consummation thereof. Notwithstanding
the existence of any Advance Facility under which an advancing person agrees to
fund Advances and/or Servicing Advances on the Servicer's behalf, the Servicer
shall remain obligated pursuant to this Agreement to make Advances and Servicing
Advances pursuant to and as required by this Agreement, and shall not be
relieved of such obligations by virtue of such Advance Facility.

            (b) Reimbursement amounts shall consist solely of amounts in respect
of Advances and/or Servicing Advances made with respect to the Mortgage Loans
for which the Servicer would be permitted to reimburse itself in accordance with
this Agreement, assuming the Servicer had made the related Advance(s) and/or
Servicing Advance(s).

            (c) The Servicer shall maintain and provide to any successor
Servicer a detailed accounting on a loan-by-loan basis as to amounts advanced
by, pledged or assigned to, and reimbursed to any advancing person. The
successor Servicer shall be entitled to rely on any such information provided by
the predecessor Servicer, and the successor Servicer shall not be liable for any
errors in such information.

            (d) The documentation establishing any Advance Facility shall
require that such reimbursement amounts distributed with respect to each
Mortgage Loan be allocated to outstanding unreimbursed Advances or Servicing
Advances (as the case may be) made with respect to that Mortgage Loan on a
"first-in, first out" (FIFO) basis. Such documentation shall also require the
Servicer to provide to the related advancing person or its designee loan-by-loan
information with respect to each such reimbursement amount distributed to such
advancing person or Advance Facility trustee on each Distribution Date, to
enable the advancing person or Advance Facility trustee to make the FIFO
allocation of each such reimbursement amount with respect to each Mortgage Loan.
The Servicer shall remain entitled to be reimbursed by the advancing person or
Advance Facility trustee for all Advances and Servicing Advances funded by the
Servicer to the extent the related rights to be reimbursed therefor have not
been sold, assigned or pledged to an advancing person.

            (e) Any amendment to this Section 3.25 or to any other provision of
this Agreement that may be necessary or appropriate to effect the terms of an
Advance Facility as described generally in this Section 3.25, including
amendments to add provisions relating to a successor Servicer, may be entered
into by the Trustee, the Depositor, and the Servicer without the consent of any
Certificateholder, but with the consent of MBIA notwithstanding anything to the
contrary in this Agreement, provided, that the Trustee and MBIA have been
provided an Opinion of Counsel that such amendment is authorized hereunder and
has no material adverse effect on the Certificateholders (determined without
regard to the Class A-2B Policy), which opinion shall be an expense of the party
requesting such opinion but in any case shall not be an expense of the Trustee,
MBIA or the Trust Fund; provided, further, that the amendment shall not be
deemed to adversely affect in any material respect the interests of the
Certificateholders if the Person requesting the amendment obtains a letter from
each Rating Agency (instead of obtaining an Opinion of Counsel to such effect)
stating that the amendment would not result in the downgrading or withdrawal of

                                      -90-
<PAGE>

the respective ratings then assigned to the Certificates (determined without
regard to the Class A-2B Policy); it being understood and agreed that any such
rating letter in and of itself will not represent a determination as to the
materiality of any such amendment and will represent a determination only as to
the credit issues affecting any such rating. Prior to entering into an Advance
Facility, the Servicer shall notify the lender under such facility in writing
that: (a) the Advances financed by and/or pledged to the lender are obligations
owed to the Servicer on a non-recourse basis payable only from the cash flows
and proceeds received under this Agreement for reimbursement of Advances only to
the extent provided herein, and the Trustee and the Trust are not otherwise
obligated or liable to repay any Advances financed by the lender; (b) the
Servicer will be responsible for remitting to the lender the applicable amounts
collected by it as Servicing Fees and as reimbursement for Advances funded by
the lender, as applicable, subject to the restrictions and priorities created in
this Agreement; and (c) the Trustee shall not have any responsibility to track
or monitor the administration of the financing arrangement between the Servicer
and the lender.

            SECTION 3.26. Servicer Indemnification.

            The Servicer agrees to indemnify the Trustee, Master Servicer, MBIA
and the Securities Administrator, from, and hold the Trustee, Master Servicer
and the Securities Administrator harmless against, any loss, liability or
expense (including reasonable attorney's fees and expenses) incurred by any such
Person by reason of the Servicer's willful misfeasance, bad faith or gross
negligence in the performance of its duties under this Agreement or by reason of
the Servicer's reckless disregard of its obligations and duties under this
Agreement. Such indemnity shall survive the termination or discharge of this
Agreement and the resignation or removal of the Servicer, the Trustee, the
Master Servicer and the Securities Administrator. Any payment hereunder made by
the Servicer to any such Person shall be from the Servicer's own funds, without
reimbursement from REMIC I therefor.

                                      -91-
<PAGE>

                                   ARTICLE IV

                       ADMINISTRATION AND MASTER SERVICING
                  OF THE MORTGAGE LOANS BY THE MASTER SERVICER

            SECTION 4.01. Master Servicer.

            The Master Servicer shall supervise, monitor and oversee the
obligation of the Servicer to service and administer the Mortgage Loans in
accordance with the terms of the Agreement and shall have full power and
authority to do any and all things which it may deem necessary or desirable in
connection with such master servicing and administration. In performing its
obligations hereunder, the Master Servicer shall act in a manner consistent with
Accepted Master Servicing Practices. Furthermore, the Master Servicer shall
oversee and consult with the Servicer as necessary from time-to-time to carry
out the Master Servicer's obligations hereunder, shall receive, review and
evaluate all reports, information and other data provided to the Master Servicer
by the Servicer and shall cause the Servicer to perform and observe the
covenants, obligations and conditions to be performed or observed by the
Servicer under this Agreement. The Master Servicer shall independently and
separately monitor the Servicer's servicing activities with respect to each
related Mortgage Loan, reconcile the results of such monitoring with such
information provided in the previous sentence on a monthly basis and coordinate
corrective adjustments to the Servicer's and Master Servicer's records, and
based on such reconciled and corrected information, prepare the statements
specified in Section 5.03 and any other information and statements required to
be provided by the Master Servicer hereunder. The Master Servicer shall
reconcile the results of its Mortgage Loan monitoring with the actual
remittances of the Servicer to the Distribution Account pursuant to the terms
hereof based on information provided to the Master Servicer by the Trustee
pursuant to the fourth paragraph of Section 9.01.

            The Trustee shall furnish the Servicer and the Master Servicer with
any limited powers of attorney and other documents in form as provided to it
necessary or appropriate to enable the Servicer and the Master Servicer to
service and administer the related Mortgage Loans and REO Property. The Trustee
shall have no responsibility for any action of the Master Servicer or the
Servicer pursuant to any such limited power of attorney and shall be indemnified
by the Master Servicer or the Servicer, as applicable, for any cost, liability
or expense incurred by the Trustee in connection with such Person's misuse of
any such power of attorney.

            The Trustee, the Custodian and the Securities Administrator shall
provide access to the records and documentation in possession of the Trustee,
the Custodian or the Securities Administrator regarding the related Mortgage
Loans and REO Property and the servicing thereof to the Certificateholders,
MBIA, the FDIC, and the supervisory agents and examiners of the FDIC, such
access being afforded only upon reasonable prior written request and during
normal business hours at the office of the Trustee, the Custodian or the
Securities Administrator; provided, however, that, unless otherwise required by
law, none of the Trustee, the Custodian or the Securities Administrator shall be
required to provide access to such records and documentation if the provision
thereof would violate the legal right to privacy of any Mortgagor. The Trustee,
the Custodian and the Securities Administrator shall allow

                                      -92-
<PAGE>

representatives of the above entities to photocopy any of the records and
documentation and shall provide equipment for that purpose at a charge that
covers the Trustee's, the Custodian's or the Securities Administrator's actual
costs.

            The Trustee shall execute and deliver to the Servicer or the Master
Servicer upon request any court pleadings, requests for trustee's sale or other
documents necessary or desirable to (i) the foreclosure or trustee's sale with
respect to a Mortgaged Property; (ii) any legal action brought to obtain
judgment against any Mortgagor on the Mortgage Note or any other Mortgage Loan
Document; (iii) obtain a deficiency judgment against the Mortgagor; or (iv)
enforce any other rights or remedies provided by the Mortgage Note or any other
Mortgage Loan Document or otherwise available at law or equity.

            SECTION 4.02. REMIC-Related Covenants.

            For as long as each REMIC shall exist, the Trustee and the
Securities Administrator shall act in accordance herewith to treat such REMIC as
a REMIC, and the Trustee and the Securities Administrator shall comply with any
directions of the Seller, the Servicer or the Master Servicer to assure such
continuing treatment. In particular, the Trustee shall not (a) sell or permit
the sale of all or any portion of the Mortgage Loans or of any investment of
deposits in an Account unless such sale is as a result of a repurchase of the
Mortgage Loans pursuant to this Agreement or the Trustee and MBIA have received
a REMIC Opinion prepared at the expense of the Trust Fund; and (b) other than
with respect to a substitution pursuant to the Mortgage Loan Purchase Agreements
or Section 2.03 of this Agreement, as applicable, accept any contribution to any
REMIC after the Startup Day without receipt of a Opinion of Counsel stating that
such contribution will not result in an Adverse REMIC Event as defined in
Section 11.01(f).

            SECTION 4.03. Monitoring of Servicer.

            (a) The Master Servicer shall be responsible for monitoring the
compliance by the Servicer with its duties under this Agreement. In the review
of the Servicer's activities, the Master Servicer may rely upon an officer's
certificate of the Servicer with regard to the Servicer's compliance with the
terms of this Agreement. In the event that the Master Servicer, in its judgment,
determines that the Servicer should be terminated in accordance with the terms
hereof, or that a notice should be sent pursuant to the terms hereof with
respect to the occurrence of an event that, unless cured, would constitute an
Event of Default, the Master Servicer shall notify the Seller, the Trustee and
MBIA thereof and the Master Servicer shall issue such notice or take such other
action as it deems appropriate.

            (b) The Master Servicer, for the benefit of the Trustee, the
Certificateholders and MBIA, shall enforce the obligations of the Servicer under
this Agreement, and shall, in the event that the Servicer fails to perform its
obligations in accordance with this Agreement, subject to the preceding
paragraph and Article VIII, cause the Trustee to terminate the rights and
obligations of the Servicer hereunder in accordance with the provisions of
Article VIII. Such enforcement, including, without limitation, the legal
prosecution of claims 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

                                      -93-
<PAGE>

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,
provided that the Master Servicer shall not be required to prosecute or defend
any legal action except to the extent that the Master Servicer shall have
received reasonable indemnity for its costs and expenses in pursuing such
action.

            (c) The Master Servicer shall be entitled to be reimbursed by the
Servicer (or from amounts on deposit in the Distribution Account if the Servicer
is unable to fulfill its obligations hereunder) for all reasonable out-of-pocket
or third party costs associated with the transfer of servicing from the
predecessor Servicer (or if the predecessor Servicer is the Master Servicer,
from the Servicer immediately preceding the Master Servicer), including without
limitation, any reasonable out-of-pocket or third party costs or expenses
associated with the complete transfer of all servicing data and the completion,
correction or manipulation of such servicing data as may be required by the
Master Servicer to correct any errors or insufficiencies in the servicing data
or otherwise to enable the Master Servicer to service the Mortgage Loans
properly and effectively, upon presentation of reasonable documentation of such
costs and expenses.

            (d) The Master Servicer shall require the Servicer to comply with
the remittance requirements and other obligations set forth in this Agreement.

            (e) If the Master Servicer acts as successor Servicer, it will not
assume liability for the representations and warranties of the terminated
Servicer.

            SECTION 4.04. Fidelity Bond.

            The Master Servicer, at its expense, shall maintain in effect a
blanket fidelity bond and an errors and omissions insurance policy, affording
coverage with respect to all directors, officers, employees and other Persons
acting on such Master Servicer's behalf, and covering errors and omissions in
the performance of the Master Servicer's obligations hereunder. The errors and
omissions insurance policy and the fidelity bond shall be in such form and
amount generally acceptable for entities serving as master servicers or
trustees.

            SECTION 4.05. Power to Act; Procedures.

            The Master Servicer shall master service the Mortgage Loans and
shall have full power and authority, subject to the REMIC Provisions and the
provisions of Article XI, to do any and all things that it may deem necessary or
desirable in connection with the master servicing and administration of the
Mortgage Loans, including but not limited to the power and authority (i) to
execute and deliver, on behalf of the Certificateholders and the Trustee,
customary consents or waivers and other instruments and documents, (ii) to
consent to transfers of any Mortgaged Property and assumptions of the Mortgage
Notes and related Mortgages, (iii) to collect any Insurance Proceeds and
Liquidation Proceeds, and (iv) to effectuate foreclosure or other conversion of
the ownership of the Mortgaged Property securing any Mortgage Loan, in each
case, in accordance with the provisions of this Agreement; provided, however,
that the Master Servicer shall not (and, consistent with its responsibilities
under Section 4.03, shall not permit the Servicer to) knowingly or intentionally
take any action, or fail to take (or fail to cause to be

                                      -94-
<PAGE>

taken) any action reasonably within its control and the scope of duties more
specifically set forth herein, that, under the REMIC Provisions, if taken or not
taken, as the case may be, would cause REMIC I or REMIC II to fail to qualify as
a REMIC or result in the imposition of a tax upon the Trust Fund (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) unless the Master Servicer and MBIA have received
an Opinion of Counsel (but not at the expense of the Master Servicer or MBIA) to
the effect that the contemplated action will not would cause REMIC I or REMIC II
to fail to qualify as a REMIC or result in the imposition of a tax upon REMIC I
or REMIC II, as the case may be. The Trustee shall furnish the Master Servicer,
upon written request from a Servicing Officer, with any powers of attorney
empowering the Master Servicer or the Servicer to execute and deliver
instruments of satisfaction or cancellation, or of partial or full release or
discharge, and to foreclose upon or otherwise liquidate Mortgaged Property, and
to appeal, prosecute or defend in any court action relating to the Mortgage
Loans or the Mortgaged Property, in accordance with this Agreement, and the
Trustee shall execute and deliver such other documents, as the Master Servicer
or the Servicer may request, to enable the Master Servicer to master service and
administer the Mortgage Loans and carry out its duties hereunder, in each case
in accordance with Accepted Master Servicing Practices (and the Trustee shall
have no liability for misuse of any such powers of attorney by the Master
Servicer or the Servicer and shall be indemnified by the Master Servicer or the
Servicer, as applicable, for any cost, liability or expense incurred by the
Trustee in connection with such Person's use or misuse of any such power of
attorney). If the Master Servicer or the Trustee has been advised that it is
likely that the laws of the state in which action is to be taken prohibit such
action if taken in the name of the Trustee or that the Trustee would be
adversely affected under the "doing business" or tax laws of such state if such
action is taken in its name, the Master Servicer shall join with the Trustee in
the appointment of a co-trustee pursuant to Section 9.10. In the performance of
its duties hereunder, the Master Servicer shall be an independent contractor and
shall not, except in those instances where it is taking action in the name of
the Trustee, be deemed to be the agent of the Trustee.

            SECTION 4.06. Due-on-Sale Clauses; Assumption Agreements.

            To the extent Mortgage Loans contain enforceable due-on-sale
clauses, the Master Servicer shall cause the Servicer to enforce such clauses in
accordance with this Agreement. If applicable law prohibits the enforcement of a
due-on-sale clause or such clause is otherwise not enforced in accordance with
this Agreement, and, as a consequence, a Mortgage Loan is assumed, the original
Mortgagor may be released from liability in accordance with this Agreement.

            SECTION 4.07. Reserved.

            SECTION 4.08. Documents, Records and Funds in Possession of Master
            Servicer To Be Held for Trustee.

            (a) The Master Servicer shall transmit to the Trustee or Custodian
such documents and instruments coming into the possession of the Master Servicer
from time to time as are required by the terms hereof to be delivered to the
Trustee or Custodian. Any funds received by the Master Servicer in respect of
any Mortgage Loan or which otherwise are collected by the Master Servicer as
Liquidation

                                      -95-
<PAGE>

Proceeds or Insurance Proceeds in respect of any Mortgage Loan shall be remitted
to the Trustee for deposit in the Distribution Account. The Master Servicer
shall, and, subject to Section 3.20, shall cause the Servicer to, provide access
to information and documentation regarding the Mortgage Loans to the Trustee,
its agents and accountants at any time upon reasonable request and during normal
business hours, MBIA and to Certificateholders that are savings and loan
associations, banks or insurance companies, the Office of Thrift Supervision,
the FDIC and the supervisory agents and examiners of such Office and Corporation
or examiners of any other federal or state banking or insurance regulatory
authority if so required by applicable regulations of the Office of Thrift
Supervision or other regulatory authority, such access to be afforded without
charge but only upon reasonable request in writing and during normal business
hours at the offices of the Master Servicer designated by it. In fulfilling such
a request the Master Servicer shall not be responsible for determining the
sufficiency of such information.

            (b) All Mortgage Files and funds collected or held by, or under the
control of, the Master Servicer, in respect of any Mortgage Loans, whether from
the collection of principal and interest payments or from Liquidation Proceeds
or Insurance Proceeds, shall be remitted to the Trustee for deposit in the
Distribution Account.

            SECTION 4.09. Standard Hazard Insurance and Flood Insurance
            Policies.

            For each Mortgage Loan, the Master Servicer shall enforce the
obligation of the Servicer under this Agreement to maintain or cause to be
maintained standard fire and casualty insurance and, where applicable, flood
insurance, all in accordance with the provisions of this Agreement. It is
understood and agreed that such insurance shall be with insurers meeting the
eligibility requirements set forth in Section 3.11 and that no earthquake or
other additional insurance is to be required of any Mortgagor or to be
maintained on property acquired in respect of a defaulted loan, other than
pursuant to such applicable laws and regulations as shall at any time be in
force and as shall require such additional insurance.

            SECTION 4.10. Presentment of Claims and Collection of Proceeds.

            The Master Servicer shall enforce the Servicer's obligations under
this Agreement to, prepare and present on behalf of the Trustee, MBIA and the
Certificateholders all claims under the Insurance Policies and take such actions
(including the negotiation, settlement, compromise or enforcement of the
insured's claim) as shall be necessary to realize recovery under such policies.
Any proceeds disbursed to the Master Servicer in respect of such policies, bonds
or contracts shall be promptly remitted to the Trustee for deposit in the
Distribution Account upon receipt, except that any amounts realized that are to
be applied to the repair or restoration of the related Mortgaged Property as a
condition precedent to the presentation of claims on the related Mortgage Loan
to the insurer under any applicable insurance policy need not be so or remitted.

            SECTION 4.11. Maintenance of the Primary Mortgage Insurance
            Policies.

            (a) The Master Servicer shall not take, or permit the Servicer to
take (to the extent such action is prohibited by this Agreement), any action
that would result in noncoverage under any primary

                                      -96-
<PAGE>

mortgage insurance policy of any loss which, but for the actions of the Master
Servicer or the Servicer, would have been covered thereunder. The Master
Servicer shall use its best reasonable efforts to cause the Servicer to keep in
force and effect (to the extent that the Mortgage Loan requires the Mortgagor to
maintain such insurance), primary mortgage insurance applicable to each Mortgage
Loan in accordance with the provisions of this Agreement. The Master Servicer
shall not, and shall not permit the Servicer to, cancel or refuse to renew any
primary mortgage insurance policy that is in effect at the date of the initial
issuance of the Mortgage Note and is required to be kept in force hereunder
except in accordance with the provisions of this Agreement.

            (b) The Master Servicer agrees to cause the Servicer to present, on
behalf of the Trustee, MBIA and the Certificateholders, claims to the insurer
under any primary mortgage insurance policies and, in this regard, to take such
reasonable action as shall be necessary to permit recovery under any primary
mortgage insurance policies respecting defaulted Mortgage Loans.

            SECTION 4.12. Trustee to Retain Possession of Certain Insurance
            Policies and Documents.

            The Trustee or the applicable Custodian, shall retain possession and
custody of the originals (to the extent available) of any primary mortgage
insurance policies, or certificate of insurance if applicable, and any
certificates of renewal as to the foregoing as may be issued from time to time
as contemplated by this Agreement. Until all amounts distributable in respect of
the Certificates and all amounts payable to MBIA have been distributed in full
and the Master Servicer and the Servicer have otherwise fulfilled their
respective obligations under this Agreement, the Trustee or the Custodian shall
also retain possession and custody of each Mortgage File in accordance with and
subject to the terms and conditions of this Agreement and the Custodial
Agreement. The Master Servicer shall promptly deliver or cause to be delivered
to the Trustee or the Custodian, upon the execution or receipt thereof the
originals of any primary mortgage insurance policies, any certificates of
renewal, and such other documents or instruments that constitute Mortgage Loan
Documents that come into the possession of the Master Servicer from time to
time.

            SECTION 4.13. Realization Upon Defaulted Mortgage Loans.

            The Master Servicer shall cause the Servicer to foreclose upon,
repossess or otherwise comparably convert the ownership of Mortgaged Properties
securing such of the Mortgage Loans as come into and continue in default and as
to which no satisfactory arrangements can be made for collection of delinquent
payments, all in accordance with this Agreement.

            SECTION 4.14. Compensation for the Master Servicer.

            As compensation for the activities of the Master Servicer hereunder,
the Master Servicer shall be entitled to the Master Servicing Fee and the income
from investment of or earnings on the funds from time to time in the
Distribution Account, as provided in Section 3.10. The Master Servicing Fee
payable to the Master Servicer in respect of any Distribution Date shall be
reduced in accordance with

                                      -97-
<PAGE>

Section 4.19. The Master Servicer shall be required
to pay all expenses incurred by it in connection with its activities hereunder
and shall not be entitled to reimbursement therefor except as provided in this
Agreement.

            SECTION 4.15. REO Property.

            (a) In the event the Trust Fund acquires ownership of any REO
Property in respect of any related Mortgage Loan, the deed or certificate of
sale shall be issued to the Trustee, or to its nominee, on behalf of the related
Certificateholders and MBIA. The Master Servicer shall cause the Servicer to
sell, any REO Property as expeditiously as possible and in accordance with the
provisions of this Agreement. Further, the Master Servicer shall cause the
Servicer to sell any REO Property prior to three years after the end of the
calendar year of its acquisition by REMIC I unless (i) the Trustee and MBIA
shall have been supplied by the Servicer with an Opinion of Counsel to the
effect that the holding by the Trust Fund of such REO Property subsequent to
such three-year period will not result in the imposition of taxes on "prohibited
transactions" of any REMIC hereunder as defined in section 860F of the Code or
cause any REMIC hereunder to fail to qualify as a REMIC at any time that any
Certificates are outstanding, in which case the Trust Fund may continue to hold
such Mortgaged Property (subject to any conditions contained in such Opinion of
Counsel) or (ii) the Servicer shall have applied for, prior to the expiration of
such three-year period, an extension of such three-year period in the manner
contemplated by Section 856(e)(3) of the Code, in which case the three-year
period shall be extended by the applicable extension period. The Master Servicer
shall cause the Servicer to protect and conserve, such REO Property in the
manner and to the extent required by this Agreement, in accordance with the
REMIC Provisions and in a manner that does not result in a tax on "net income
from foreclosure property" or cause such REO Property to fail to qualify as
"foreclosure property" within the meaning of Section 860G(a)(8) of the Code.

            (b) The Master Servicer shall cause the Servicer to deposit all
funds collected and received in connection with the operation of any REO
Property in the Collection Account.

            SECTION 4.16. Annual Officer's Certificate as to Compliance.

            (a) The Master Servicer shall deliver to the Trustee, MBIA and the
Rating Agencies on or before March 15 of each year, commencing on March 15,
2004, an Officer's Certificate, certifying that with respect to the period
ending December 31 of the prior year: (i) such Servicing Officer has reviewed
the activities of such Master Servicer during the preceding calendar year or
portion thereof and its performance under this Agreement, (ii) to the best of
such Servicing Officer's knowledge, based on such review, such Master Servicer
has performed and fulfilled its duties, responsibilities and obligations under
this Agreement in all material respects throughout such year, or, if there has
been a default in the fulfillment of any such duties, responsibilities or
obligations, specifying each such default known to such Servicing Officer and
the nature and status thereof, (iii) nothing has come to the attention of such
Servicing Officer to lead such Servicing Officer to believe that the Master
Servicer has failed to perform any of its duties, responsibilities and
obligations under this Agreement in all material respects throughout such year,
or, if

                                      -98-
<PAGE>

there has been a material default in the performance or fulfillment of any such
duties, responsibilities or obligations, specifying each such default known to
such Servicing Officer and the nature and status thereof.

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

            SECTION 4.17. Annual Independent Accountant's Servicing Report.

            If the Master Servicer has, during the course of any calendar year,
directly serviced any of the Mortgage Loans, then the Master Servicer at its
expense shall cause a nationally recognized firm of independent certified public
accountants to furnish a statement to the Trustee and MBIA, the Rating Agencies
and the Seller on or before March 15 of each year, commencing on March 15, 2004
to the effect that, with respect to the most recently ended fiscal year, such
firm has examined certain records and documents relating to the Master
Servicer's performance of its servicing obligations under this Agreement and
pooling and servicing and trust agreements in material respects similar to this
Agreement and to each other and that, on the basis of such examination conducted
substantially in compliance with the audit program for mortgages serviced for
Freddie Mac or the Uniform Single Attestation Program for Mortgage Bankers, such
firm is of the opinion that the Master Servicer's activities have been conducted
in compliance with this Agreement, or that such examination has disclosed no
material items of noncompliance except for (i) such exceptions as such firm
believes to be immaterial, (ii) such other exceptions as are set forth in such
statement and (iii) such exceptions that the Uniform Single Attestation Program
for Mortgage Bankers or the Audit Program for Mortgages Serviced by Freddie Mac
requires it to report. Copies of such statements shall be provided to any
Certificateholder upon request by the Master Servicer, or by the Trustee at the
expense of the Master Servicer if the Master Servicer shall fail to provide such
copies. If such report discloses exceptions that are material, the Master
Servicer shall advise the Trustee whether such exceptions have been or are
susceptible of cure, and will take prompt action to do so.

            SECTION 4.18. UCC.

            The Depositor agrees to file continuation statements for any Uniform
Commercial Code financing statements which the Seller has informed the Depositor
were filed on the Closing Date in connection with the Trust. The Depositor shall
file any financing statements or amendments thereto required by any change in
the Uniform Commercial Code.

            SECTION 4.19. Obligation of the Master Servicer in Respect of
            Prepayment Interest Shortfalls.

            In the event of a Prepayment Interest Shortfall, the Master Servicer
shall deposit into the Distribution Account not later than the related
Distribution Date an amount equal to the lesser of (i) the aggregate amounts
required to be paid by the Servicer with respect to Prepayment Interest
Shortfalls attributable to Principal Prepayments on the related Mortgage Loans
for the related Distribution Date, and

                                      -99-
<PAGE>

not so paid by the Servicer and (ii) the Master Servicing Fee for such
Distribution Date, without reimbursement therefor.

            SECTION 4.20. Collection Account.

            The Master Servicer shall enforce the obligation of the Servicer to
establish and maintain a Collection Account in accordance with this Agreement,
with records to be kept with respect thereto on a Mortgage Loan by Mortgage Loan
basis, into which accounts shall be deposited within two Business Days of
receipt all collections of principal and interest on any Mortgage Loan and with
respect to any REO Property received by the Servicer, including Principal
Prepayments, Insurance Proceeds, Liquidation Proceeds, and advances made from
the Servicer's own funds (less servicing compensation as permitted by Section
3.15) and all other amounts to be deposited in the Collection Account.

            SECTION 4.21. Prepayment Penalty Verification.

            On or prior to each Servicer Remittance Date, the Servicer shall
provide in an electronic format acceptable to the Master Servicer and the
Servicer the data necessary for the Master Servicer to perform its verification
duties set forth in this Section 4.21. The Master Servicer or a third party
reasonably acceptable to the Master Servicer and the Depositor (the
"Verification Agent") will perform such verification duties and will use its
best efforts to issue its findings in a report (the "Verification Report")
delivered to the Master Servicer and the Depositor within ten (10) Business Days
following the related Distribution Date; provided, however, that if the
Verification Agent is unable to issue the Verification Report within ten (10)
Business Days following the Distribution Date, the Verification Agent may issue
and deliver to the Master Servicer and the Depositor the Verification Report
upon the completion of its verification duties. The Master Servicer shall
forward the Verification Report to the Servicer and shall notify the Servicer if
the Master Servicer has determined that such Servicer did not deliver the
appropriate Prepayment Charge to the Securities Administrator in accordance with
this Agreement. Such written notification from the Master Servicer shall include
the loan number, prepayment penalty code and prepayment penalty amount as
calculated by the Master Servicer or the Verification Agent, as applicable, of
each Mortgage Loan for which there is a discrepancy. If the Servicer agrees with
the verified amounts, the Servicer shall adjust the immediately succeeding
Servicer Report and the amount remitted to the Trustee with respect to
prepayments accordingly. If the Servicer disagrees with the determination of the
Master Servicer, the Servicer shall, within five (5) Business Days of its
receipt of the Verification Report, notify the Master Servicer of such
disagreement and provide the Master Servicer with detailed information to
support such Servicer's position. The Servicer and the Master Servicer shall
cooperate to resolve any discrepancy on or prior to the immediately succeeding
Servicer Remittance Date, and the Servicer will indicate the effect of such
resolution on the related Servicer Report and shall adjust the amount remitted
with respect to prepayments on such Servicer Remittance Date accordingly.

            During such time as the Servicer and the Master Servicer are
resolving discrepancies with respect to the Prepayment Charges, no payments in
respect of any disputed Prepayment Charges will be remitted to the Securities
Administrator for deposit in the Distribution Account and the Master Servicer
shall not be obligated to deposit such payments, unless otherwise required
pursuant to Section 8.01 hereof.

                                     -100-
<PAGE>

In connection with such duties, the Master Servicer shall be able to rely solely
on the information provided to it by the Servicer in accordance with this
Section. The Master Servicer shall not be responsible for verifying the accuracy
of any of the information provided to it by the Servicer.

                                     -101-
<PAGE>

                                    ARTICLE V

                         PAYMENTS TO CERTIFICATEHOLDERS

            SECTION 5.01. Distributions.

            (a)(1)(A) On each Distribution Date, the following amounts, in the
following order of priority, shall be distributed by REMIC I to REMIC II on
account of the REMIC I Regular Interests or withdrawn from the Distribution
Account and distributed to the holders of the Class R Certificates, in respect
of the Class R-I Interest, as the case may be:

            (i) to Holders of REMIC I Regular Interest I-LTAA, REMIC Regular
      Interest I-LTA1, REMIC I Regular Interest I-LTA2A, REMIC I Regular
      Interest I-LTA2B, REMIC I Regular Interest I-LTM1, REMIC I Regular
      Interest I-LTM2, REMIC I Regular Interest I-LTM3, REMIC I Regular Interest
      I-LTM4, REMIC I Regular Interest I-LTM5, REMIC I Regular Interest I-LTM6,
      REMIC I Regular Interest I-LTZZ and REMIC I Regular Interest I-LTP, pro
      rata, in an amount equal to (A) the Uncertificated Interest for such
      Distribution Date, plus (B) any amounts in respect thereof remaining
      unpaid from previous Distribution Dates. Amounts payable as Uncertificated
      Interest in respect of REMIC I Regular Interest I-LTZZ shall be reduced
      when the REMIC I Overcollateralization Amount is less than the REMIC I
      Required Overcollateralization Amount, by the lesser of (x) the amount of
      such difference and (y) the Maximum I-LTZZ Uncertificated Interest
      Deferral Amount and such amount will be payable to the Holders of REMIC I
      Regular Interest I- LTA1, REMIC I Regular Interest I-LTA2A, REMIC I
      Regular Interest I-LTA2B, REMIC I Regular Interest I-LTM1, REMIC I Regular
      Interest I-LTM2, REMIC I Regular Interest I-LTM3, REMIC I Regular Interest
      I-LTM4, REMIC I Regular Interest I-LTM5 and REMIC I Regular Interest
      I-LTM6 in the same proportion as the Overcollateralization Increase Amount
      is allocated to the Corresponding Certificates;

            (ii) to Holders of REMIC I Regular Interest I-LT1A, REMIC I Regular
      Interest I-LT1B, REMIC I Regular Interest I-LT2A, REMIC I Regular Interest
      I-LT2B and REMIC I Regular Interest I-LTXX, pro rata, in an amount equal
      to (A) the Uncertificated Interest for such Distribution Date, plus (B)
      any amounts in respect thereof remaining unpaid from previous Distribution
      Dates

            (iii) to the Holders of REMIC I Regular Interests, in an amount
      equal to the remainder of the REMIC I Marker Allocation Percentage of the
      Available Funds for such Distribution Date after the distributions made
      pursuant to clause (i) above, allocated as follows:

            (a) to the Holders of REMIC I Regular Interest I-LTAA, 98.00% of
such remainder, until the Uncertificated Balance of such Uncertificated REMIC I
Regular Interest is reduced to zero;

            (b) to the Holders of REMIC I Regular Interest I-LTA1, REMIC I
Regular Interest I-LTA2A, REMIC I Regular Interest I-LTA2B, REMIC I Regular
Interest I-LTM1, REMIC I Regular Interest I-LTM2, REMIC I Regular Interest
I-LTM3, REMIC I Regular Interest I-LTM4, REMIC I

                                     -102-
<PAGE>

Regular Interest I-LTM5 and REMIC I Regular Interest I-LTM6, 1.00% of such
remainder, in the same proportion as principal payments are allocated to the
Corresponding Certificates, until the Uncertificated Balances of such REMIC I
Regular Interests are reduced to zero;

            (c) to the Holders of REMIC I Regular Interest I-LTZZ, 1.00% of such
remainder, until the Uncertificated Balance of such REMIC I Regular Interest is
reduced to zero;

            (d) to the Holders of REMIC I Regular Interest I-LTP, on the
Distribution Date immediately following the expiration of the latest Prepayment
Charge as identified on the Prepayment Charge Schedule or any Distribution Date
thereafter until $100 has been distributed pursuant to this clause; then

            (e) any remaining amount to the Holders of the Class R-I Interest,
in respect of the Class R-I Interest;

provided, however, that 98.00% and 2.00% of any principal payments that are
attributable to an Overcollateralization Reduction Amount shall be allocated to
Holders of REMIC I Regular Interest I-LTAA and REMIC I Regular Interest I-LTZZ,
respectively.

            (iv) to the Holders of REMIC I Regular Interests, in an amount equal
      to the remainder of the REMIC I Sub WAC Allocation Percentage of Available
      Funds for such Distribution Date after the distributions made pursuant to
      clause (i) above, such that distributions of principal shall be deemed to
      be made to the REMIC I Regular Interests first, so as to keep the
      Uncertificated Balance of each REMIC I Regular Interest ending with the
      designation "B" equal to 0.01% of the aggregate Stated Principal Balance
      of the Mortgage Loans in the related Loan Group; second, to each REMIC I
      Regular Interest ending with the designation "A," so that the
      Uncertificated Balance of each such REMIC I Regular Interest is equal to
      0.01% of the excess of (x) the aggregate Stated Principal Balance of the
      Mortgage Loans in the related Loan Group over (y) the current Certificate
      Principal Balance of the Class A Certificate in the related Loan Group
      (except that if any such excess is a larger number than in the preceding
      distribution period, the least amount of principal shall be distributed to
      such REMIC I Regular Interests such that the REMIC I Subordinated Balance
      Ratio is maintained); and third, any remaining principal to REMIC I
      Regular Interest I-LTXX.

            (2) On each Distribution Date, the Securities Administrator shall
withdraw from the Distribution Account to the extent on deposit therein an
amount equal to the Group I Interest Remittance Amount and make the following
disbursements and transfers in the order of priority described below, in each
case to the extent of the Group I Interest Remittance Amount remaining for such
Distribution Date:

      first, to the Holders of the Class A-1 Certificates, the Senior Interest
      Distribution Amount allocable to the Class A-1 Certificates;

                                     -103-
<PAGE>

      second, concurrently, to the Holders of the Class A-2A Certificates and
      Class A-2B Certificates, the Senior Interest Distribution Amount allocable
      to each such Class, on a pro rata basis based on the entitlement of each
      such Class, to the extent remaining unpaid after the distribution of the
      Group II Interest Remittance Amount as set forth in clause second of
      Section 5.01(a)(3) below; and

      third, to MBIA, the MBIA Premium Amount for such Distribution Date to the
      extent remaining unpaid after the distribution of the Group II Interest
      Remittance Amount as set forth in clause first of Section 5.01(a)(3)
      below.

            (3) On each Distribution Date, the Securities Administrator shall
withdraw from the Distribution Account to the extent on deposit therein an
amount equal to the Group II Interest Remittance Amount and make the following
disbursements and transfers in the order of priority described below, in each
case to the extent of the Group II Interest Remittance Amount remaining for such
Distribution Date:

      first, to MBIA, the MBIA Premium Amount for such Distribution Date;

      second, concurrently to the Holders of the Class A-2A Certificates and
      Class A-2B Certificates, the Senior Interest Distribution Amount allocable
      to each such Class, on a pro rata basis based on the entitlement of each
      such Class; and

      third, to the Holders of the Class A-1 Certificates, the Senior Interest
      Distribution Amount allocable to the Class A-1 Certificates, to the extent
      remaining unpaid after the distribution of the Group I Interest Remittance
      Amount as set forth in clause first of Section 5.01(a)(2) above.

            (4) On each Distribution Date, the Securities Administrator shall
withdraw from the Distribution Account to the extent on deposit therein an
amount equal to the Group I Interest Remittance Amount and the Group II Interest
Remittance Amount remaining and make the following disbursements and transfers
in the order of priority described below, in each case to the extent of the
Group I Interest Remittance Amount and Group II Interest Remittance Amount
remaining for such Distribution Date:

      first, to the Holders of the Class M-1 Certificates, the Interest
      Distribution Amount allocable to the Class M-1 Certificates;

      second, to the Holders of the Class M-2 Certificates, the Interest
      Distribution Amount allocable to the Class M-2 Certificates;

      third, to the Holders of the Class M-3 Certificates, the Interest
      Distribution Amount allocable to the Class M-3 Certificates;

      fourth, to the Holders of the Class M-4 Certificates, the Interest
      Distribution Amount allocable to the Class M-4 Certificates;

                                     -104-
<PAGE>

      fifth, to the Holders of the Class M-5 Certificates, the Interest
      Distribution Amount allocable to the Class M-5 Certificates; and

      sixth, to the Holders of the Class M-6 Certificates, the Interest
      Distribution Amount allocable to the Class M-6 Certificates.

            (5) On each Distribution Date (a) prior to the Stepdown Date or (b)
on which a Trigger Event is in effect, the Securities Administrator shall
withdraw from the Distribution Account to the extent on deposit therein an
amount equal to the Group I Principal Distribution Amount and the Group II
Principal Distribution Amount and distribute to the Certificateholders the
following amounts, in the following order of priority:

            (i) The Group I Principal Distribution Amount shall be distributed
      in the following order of priority:

                  first, to the Holders of the Class A-1 Certificates, until the
                  Certificate Principal Balance of such Class has been reduced
                  to zero; and

                  second, concurrently, to the Holders of the Class A-2A
                  Certificates and Class A-2B Certificates, on a pro rata basis
                  based on the aggregate Certificate Principal Balance of each
                  such Class, after taking into account the distribution of the
                  Group II Principal Distribution Amount pursuant to clause
                  first of Section 5.01(a)(5)(ii) below, until the Certificate
                  Principal Balance of each such Class has been reduced to zero.

            (ii) The Group II Principal Distribution Amount shall be distributed
      in the following order of priority:

                  first, concurrently, to the Holders of the Class A-2A
                  Certificates and Class A- 2B Certificates, on a pro rata basis
                  based on the aggregate Certificate Principal Balance of each
                  such Class, until the Certificate Principal Balance of each
                  such Class has been reduced to zero; and

                  second, to the Holders of the Class A-1 Certificates, after
                  taking into account the distribution of the Group I Principal
                  Distribution Amount pursuant to clause first of Section
                  5.01(a)(5)(i) above, until the Certificate Principal Balance
                  of such Class has been reduced to zero.

            (iii) The Group I Principal Distribution Amount and Group II
      Principal Distribution Amount remaining after distributions pursuant to
      Section 5.01(a)(5)(i) and (ii) above shall be distributed in the following
      order of priority:

                                     -105-
<PAGE>

                  first, to the Holders of the Class M-1 Certificates, until the
                  Certificate Principal Balance of such Class has been reduced
                  to zero;

                  second, to the Holders of the Class M-2 Certificates, until
                  the Certificate Principal Balance of such Class has been
                  reduced to zero;

                  third, to the Holders of the Class M-3 Certificates, until the
                  Certificate Principal Balance of such Class has been reduced
                  to zero;

                  fourth, to the Holders of the Class M-4 Certificates, until
                  the Certificate Principal Balance of such Class has been
                  reduced to zero;

                  fifth, to the Holders of the Class M-5 Certificates, until the
                  Certificate Principal Balance of such Class has been reduced
                  to zero; and

                  sixth, to the Holders of the Class M-6 Certificates, until the
                  Certificate Principal Balance of such Class has been reduced
                  to zero.

            (6) On each Distribution Date (a) on or after the Stepdown Date and
(b) on which a Trigger Event is not in effect, the Securities Administrator
shall withdraw from the Distribution Account to the extent on deposit therein an
amount equal to the Group I Principal Distribution Amount and the Group II
Principal Distribution Amount and distribute to the Certificateholders the
following amounts, in the following order of priority:

            (i) The Group I Principal Distribution Amount shall be distributed
      in the following order of priority:

                  first, to the Holders of the Class A-1 Certificates, the Class
                  A-1 Principal Distribution Amount, until the Certificate
                  Principal Balance of such Class has been reduced to zero;

                  second, to the extent of the portion, if any, of the Class A-1
                  Principal Distribution Amount remaining undistributed pursuant
                  to clause first of this Section 5.01(a)(6)(i), concurrently,
                  to the Holders of the Class A-2A Certificates and Class A-2B
                  Certificates, on a pro rata basis based on the aggregate
                  Certificate Principal Balance of each such Class, after taking
                  into account the distribution of the Group II Principal
                  Distribution Amount pursuant to clause first of Section
                  5.01(a)(6)(ii) below, until the Certificate Principal Balance
                  of each such Class has been reduced to zero; and

                  third, concurrently, to the Holders of the Class A-2A
                  Certificates and Class A-2B Certificates, on a pro rata basis
                  based on the aggregate Certificate Principal Balance of each
                  such Class, after taking into account the distribution of the
                  Group

                                     -106-
<PAGE>

                  II Principal Distribution Amount pursuant to clause first of
                  Section 5.01(a)(6)(ii) below, up to the amount, if any, of the
                  Class A-2 Principal Distribution Amount remaining unpaid on
                  such Distribution Date, until the Certificate Principal
                  Balance of each such Class has been reduced to zero.

            (ii) The Group II Principal Distribution Amount shall be distributed
      in the following order of priority:

                  first, concurrently, to the Holders of the Class A-2A
                  Certificates and Class A- 2B Certificates, on a pro rata basis
                  based on the aggregate Certificate Principal Balance of each
                  such Class, the Class A-2 Principal Distribution Amount, until
                  the Certificate Principal Balance of each such Class has been
                  reduced to zero;

                  second, to the extent of the portion, if any, of the Class A-2
                  Principal Distribution Amount remaining undistributed pursuant
                  to clause first of this Section 5.01(a)(6)(ii), to the Holders
                  of the Class A-1 Certificates, after taking into account the
                  distribution of the Group I Principal Distribution Amount
                  pursuant to clause first of Section 5.01(a)(6)(i) above, until
                  the Certificate Principal Balance of such Class has been
                  reduced to zero; and

                  third, to the holders of the Class A-1 Certificates, after
                  taking into account the distribution of the Group I Principal
                  Distribution Amount pursuant to clause first of Section
                  5.01(a)(6)(i) above, up to the amount, if any, of the Class
                  A-1 Principal Distribution Amount remaining unpaid on such
                  Distribution Date, until the Certificate Principal Balance of
                  such Class has been reduced to zero.

            (iii) The Principal Distribution Amount remaining after
      distributions pursuant to Section 5.01(a)(6)(i) and (ii) above shall be
      distributed in the following order of priority:

                  first, to the Class M-1 Certificates, the lesser of (x) the
                  remaining Principal Distribution Amount and (y) the Class M-1
                  Principal Distribution Amount, until the Certificate Principal
                  Balance of such Class has been reduced to zero;

                  second, to the Class M-2 Certificates, the lesser of (x) the
                  excess of (i) the remaining Principal Distribution Amount over
                  (ii) the amount distributed to the Holders of the Class M-1
                  Certificates pursuant to clause first of this Section
                  5.01(a)(6)(iii) and (y) the Class M-2 Principal Distribution
                  Amount until the Certificate Principal Balance of such Class
                  has been reduced to zero;

                  third, to the Class M-3 Certificates, the lesser of (x) the
                  excess of (i) the remaining Principal Distribution Amount over
                  (ii) the sum of the amounts distributed to the Holders of the
                  Class M-1 Certificates pursuant to clause first of this
                  Section 5.01(a)(6)(iii) and to the Holders of the Class M-2
                  Certificates pursuant to clause

                                     -107-
<PAGE>

                  second of this Section 5.01(a)(6)(iii) and (y) the Class M-3
                  Principal Distribution Amount, until the Certificate Principal
                  Balance of such Class has been reduced to zero;

                  fourth, to the Class M-4 Certificates, the lesser of (x) the
                  excess of (i) the remaining Principal Distribution Amount over
                  (ii) the sum of the amounts distributed to the Holders of the
                  Class M-1 Certificates pursuant to clause first of this
                  Section 5.01(a)(6)(iii), to the Holders of the Class M-2
                  Certificates pursuant to clause second of this Section
                  5.01(a)(6)(iii) and to the Holders of the Class M-3
                  Certificates pursuant to clause third of this Section
                  5.01(a)(6)(iii) and (y) the Class M-4 Principal Distribution
                  Amount, until the Certificate Principal Balance of such Class
                  has been reduced to zero;

                  fifth, to the Class M-5 Certificates, the lesser of (x) the
                  excess of (i) the remaining Principal Distribution Amount over
                  (ii) the sum of the amounts distributed to the Holders of the
                  Class M-1 Certificates pursuant to clause first of this
                  Section 5.01(a)(6)(iii), to the Holders of the Class M-2
                  Certificates pursuant to clause second of this Section
                  5.01(a)(6)(iii), to the Holders of the Class M-3 Certificates
                  pursuant to clause third of this Section 5.01(a)(6)(iii) and
                  to the Holders of the Class M-4 Certificates pursuant to
                  clause fourth of this Section 5.01(a)(6)(iii) and (y) the
                  Class M-5 Principal Distribution Amount, until the Certificate
                  Principal Balance of such Class has been reduced to zero; and

                  sixth, to the Class M-6 Certificates, the lesser of (x) the
                  excess of (i) the remaining Principal Distribution Amount over
                  (ii) the sum of the amounts distributed to the Holders of the
                  Class M-1 Certificates pursuant to clause first of this
                  Section 5.01(a)(6)(iii), to the Holders of the Class M-2
                  Certificates pursuant to clause second of this Section
                  5.01(a)(6)(iii), to the Holders of the Class M-3 Certificates
                  pursuant to clause third of this Section 5.01(a)(6)(iii), to
                  the Holders of the Class M-4 Certificates pursuant to clause
                  fourth of this Section 5.01(a)(6)(iii) and to the Holders of
                  the Class M-5 Certificates pursuant to clause fifth of this
                  Section 5.01(a)(6)(iii) and (y) the Class M-6 Principal
                  Distribution Amount, until the Certificate Principal Balance
                  of such Class has been reduced to zero.

            (7) On each Distribution Date, the Net Monthly Excess Cashflow (or,
in the case of clause (i) below, the Net Monthly Excess Cashflow exclusive of
any Overcollateralization Reduction Amount) shall be distributed as follows:

                  (i) to the Holders of the Class or Classes of Certificates
                  then entitled to receive distributions in respect of
                  principal, in an amount equal to any Extra Principal
                  Distribution Amount, payable to such Holders in accordance
                  with the priorities set forth in Section 5.01(b) below;

                                     -108-
<PAGE>

                  (ii) to MBIA for payment of the amount, if any, due MBIA
                  pursuant to clause (a) of the definition of MBIA Reimbursement
                  Amount in Section 1.01 of this Agreement;

                  (iii) to the Holders of the Class M-1 Certificates, in an
                  amount equal to the Interest Carry Forward Amount allocable to
                  such Class of Certificates;

                  (iv) to the Holders of the Class M-2 Certificates, in an
                  amount equal to the Interest Carry Forward Amount allocable to
                  such Class of Certificates;

                  (v) to the Holders of the Class M-3 Certificates, in an amount
                  equal to the Interest Carry Forward Amount allocable to such
                  Class of Certificates;

                  (vi) to the Holders of the Class M-4 Certificates, in an
                  amount equal to the Interest Carry Forward Amount allocable to
                  such Class of Certificates;

                  (vii) to the Holders of the Class M-5 Certificates, in an
                  amount equal to the Interest Carry Forward Amount allocable to
                  such Class of Certificates;

                  (viii) to the Holders of the Class M-6 Certificates, in an
                  amount equal to the Interest Carry Forward Amount allocable to
                  such Class of Certificates;

                  (ix) to the Holders of the Class A Certificates, in an amount
                  equal to the aggregate of any Prepayment Interest Shortfalls
                  (to the extent not covered by payments pursuant to Section
                  3.22 or Section 4.19) and any Relief Act Interest Shortfall,
                  in each case that were allocated to such Class for such
                  Distribution Date and for any prior Distribution Date, to the
                  extent not previously reimbursed pursuant to Section 1.02;

                  (x) to the Holders of the Class M-1 Certificates, in an amount
                  equal to the aggregate of any Prepayment Interest Shortfalls
                  (to the extent not covered by payments pursuant to Section
                  3.22 or Section 4.19) and any Relief Act Interest Shortfall,
                  in each case that were allocated to such Class for such
                  Distribution Date and for any prior Distribution Date, to the
                  extent not previously reimbursed pursuant to Section 1.02;

                  (xi) to the Holders of the Class M-2 Certificates, in an
                  amount equal to the aggregate of any Prepayment Interest
                  Shortfalls (to the extent not covered by payments pursuant to
                  Section 3.22 or Section 4.19) and any Relief Act Interest
                  Shortfall, in each case that were allocated to such Class for
                  such Distribution Date and for any prior Distribution Date, to
                  the extent not previously reimbursed pursuant to Section 1.02;

                                     -109-
<PAGE>

                  (xii) to the Holders of the Class M-3 Certificates, in an
                  amount equal to the aggregate of any Prepayment Interest
                  Shortfalls (to the extent not covered by payments pursuant to
                  Section 3.22 or Section 4.19) and any Relief Act Interest
                  Shortfall, in each case that were allocated to such Class for
                  such Distribution Date and for any prior Distribution Date, to
                  the extent not previously reimbursed pursuant to Section 1.02;

                  (xiii) to the Holders of the Class M-4 Certificates, in an
                  amount equal to the aggregate of any Prepayment Interest
                  Shortfalls (to the extent not covered by payments pursuant to
                  Section 3.22 or Section 4.19) and any Relief Act Interest
                  Shortfall, in each case that were allocated to such Class for
                  such Distribution Date and for any prior Distribution Date, to
                  the extent not previously reimbursed pursuant to Section 1.02;

                  (xiv) to the Holders of the Class M-5 Certificates, in an
                  amount equal to the aggregate of any Prepayment Interest
                  Shortfalls (to the extent not covered by payments pursuant to
                  Section 3.22 or Section 4.19) and any Relief Act Interest
                  Shortfall, in each case that were allocated to such Class for
                  such Distribution Date and for any prior Distribution Date, to
                  the extent not previously reimbursed pursuant to Section 1.02;

                  (xv) to the Holders of the Class M-6 Certificates, in an
                  amount equal to the aggregate of any Prepayment Interest
                  Shortfalls (to the extent not covered by payments pursuant to
                  Section 3.22 or Section 4.19) and any Relief Act Interest
                  Shortfall, in each case that were allocated to such Class for
                  such Distribution Date and for any prior Distribution Date, to
                  the extent not previously reimbursed pursuant to Section 1.02;

                  (xvi) to MBIA for payment of the amount, if any, due MBIA
                  pursuant to clauses (b) and (c) of the definition of MBIA
                  Reimbursement Amount in Section 1.01 of this Agreement;

                  (xvii) to the Reserve Fund from amounts otherwise payable to
                  the Class CE Certificates, and then from the Reserve Fund to
                  the Class A, Class M-1, Class M-2, Class M-3 and Class M-4
                  Certificates, in that order, in an amount equal to the unpaid
                  amount of any Net WAC Rate Carryover Amount for each such
                  Class for such Distribution Date;

                  (xviii) to the Reserve Fund, the amount required to be
                  deposited therein pursuant to Section 3.24(b);

                                     -110-
<PAGE>

                  (xix) to the Holders of the Class CE Certificates, the
                  Interest Distribution Amount and any Overcollateralization
                  Reduction Amount for such Distribution Date; and

                  (xx) to the Holders of the Class R Certificates, in respect of
                  the Class R-II Interest, any remaining amounts; provided that
                  if such Distribution Date is the Distribution Date immediately
                  following the expiration of the latest Prepayment Charge term
                  as identified on the Mortgage Loan Schedule or any
                  Distribution Date thereafter, then any such remaining amounts
                  will be distributed first, to the Holders of the Class P
                  Certificates, until the Certificate Principal Balance thereof
                  has been reduced to zero; and second, to the Holders of the
                  Class R Certificates.

            On each Distribution Date, after making the distributions of the
Available Distribution Amount as set forth above, the Securities Administrator
will first, withdraw from the Reserve Fund all income from the investment of
funds in the Reserve Fund and distribute such amount to the Holders of the Class
CE Certificates, and second, withdraw from the Reserve Fund, to the extent of
amounts remaining on deposit therein, the amount of any Net WAC Rate Carryover
Amount for such Distribution Date and distribute such amount first, to the Class
A Certificates; second, to the Class M-1 Certificates, third, to the Class M-2
Certificates, fourth, to the Class M-3 Certificates, fifth, to the Class M-4
Certificates, sixth, to the Class M-5 Certificates and seventh, to the Class M-6
Certificates, in each case to the extent to the extent any Net WAC Rate
Carryover Amount is allocable to each such Class.

            (b) (i) On each Distribution Date (a) prior to the Stepdown Date or
(b) on which a Trigger Event is in effect, the Extra Principal Distribution
Amount shall be distributed in the following order of priority;

                  first, to the Holders of the Class A Certificates, until the
                  Certificate Principal Balance of each such Class has been
                  reduced to zero;

                  second, to the Holders of the Class M-1 Certificates, until
                  the Certificate Principal Balance of such Class has been
                  reduced to zero;

                  third, to the Holders of the Class M-2 Certificates, until the
                  Certificate Principal Balance of such Class has been reduced
                  to zero;

                  fourth, to the Holders of the Class M-3 Certificates, until
                  the Certificate Principal Balance of such Class has been
                  reduced to zero;

                  fifth, to the Holders of the Class M-4 Certificates, until the
                  Certificate Principal Balance of such Class has been reduced
                  to zero;

                  sixth, to the Holders of the Class M-5 Certificates, until the
                  Certificate Principal Balance of such Class has been reduced
                  to zero; and

                                     -111-
<PAGE>

                  seventh, to the Holders of the Class M-6 Certificates, until
                  the Certificate Principal Balance of such Class has been
                  reduced to zero.

            (ii) On each Distribution Date (a) on or after the Stepdown Date and
      (b) on which a Trigger Event is not in effect, distributions of principal
      to the extent of the Extra Principal Distribution Amount shall be
      distributed in the following order of priority;

                  first, (A) the lesser of (x) the Group I Principal
                  Distribution Amount and (y) the Class A-1 Principal
                  Distribution Amount, shall be distributed to the Holders of
                  the Class A-1 Certificates, until the Certificate Principal
                  Balance of such Class has been reduced to zero, and (B) the
                  lesser of (x) the Group II Principal Distribution Amount and
                  (y) the Class A-2 Principal Distribution Amount, shall be
                  distributed to the Holders of the Class A-2A Certificates and
                  Class A-2B Certificates, on a pro rata basis based on the
                  aggregate Certificate Principal Balance of each such Class,
                  until the Certificate Principal Balance of each such Class has
                  been reduced to zero;

                  second, the lesser of (x) the excess of (i) the Principal
                  Distribution Amount over (ii) the amount distributed to the
                  Holders of the Class A Certificates pursuant to clause first
                  of this Section 5.01(b)(ii) and (y) the Class M-1 Principal
                  Distribution Amount, shall be distributed to the Holders of
                  the Class M-1 Certificates, until the Certificate Principal
                  Balance of such Class has been reduced to zero;

                  third, the lesser of (x) the excess of (i) the Principal
                  Distribution Amount over (ii) the sum of the amounts
                  distributed to the Holders of the Class A Certificates
                  pursuant to clause first of this Section 5.01(b)(ii) and to
                  the Holders of the Class M-1 Certificates pursuant to clause
                  second of this Section 5.01(b)(ii) and (y) the Class M-2
                  Principal Distribution Amount, shall be distributed to the
                  Holders of the Class M-2 Certificates, until the Certificate
                  Principal Balance of such Class has been reduced to zero;

                  fourth, the lesser of (x) the excess of (i) the Principal
                  Distribution Amount over (ii) the sum of the amounts
                  distributed to the Holders of the Class A Certificates
                  pursuant to clause first of this Section 5.01(b)(ii), to the
                  Holders of the Class M-1 Certificates pursuant to clause
                  second of this Section 5.01(b)(ii) and to the Holders of the
                  Class M-2 Certificates pursuant to clause third of this
                  Section 5.01(b)(ii) and (y) the Class M-3 Principal
                  Distribution Amount, shall be distributed to the Holders of
                  the Class M-3 Certificates, until the Certificate Principal
                  Balance of such Class has been reduced to zero;

                  fifth, the lesser of (x) the excess of (i) the Principal
                  Distribution Amount over (ii) the sum of the amounts
                  distributed to the Holders of the Class A Certificates
                  pursuant to clause first of this Section 5.01(b)(ii), to the
                  Holders of the Class M-1

                                     -112-
<PAGE>

                  Certificates pursuant to clause second of this Section
                  5.01(b)(ii), to the Holders of the Class M-2 Certificates
                  pursuant to clause third of this Section 5.01(b)(ii) and to
                  the Holders of the Class M-3 Certificates pursuant to clause
                  fourth of this Section 5.01(b)(ii) and (y) the Class M-4
                  Principal Distribution Amount, shall be distributed to the
                  Holders of the Class M-4 Certificates, until the Certificate
                  Principal Balance of such Class has been reduced to zero;

                  sixth, the lesser of (x) the excess of (i) the Principal
                  Distribution Amount over (ii) the sum of the amounts
                  distributed to the Holders of the Class A Certificates
                  pursuant to clause first of this Section 5.01(b)(ii), to the
                  Holders of the Class M-1 Certificates pursuant to clause
                  second of this Section 5.01(b)(ii), to the Holders of the
                  Class M-2 Certificates pursuant to clause third of this
                  Section 5.01(b)(ii), to the Holders of the Class M-3
                  Certificates pursuant to clause fourth of this Section
                  5.01(b)(ii) and to the Holders of the Class M-4 Certificates
                  pursuant to clause fifth of this Section 5.01(b)(ii) and (y)
                  the Class M-5 Principal Distribution Amount, shall be
                  distributed to the Holders of the Class M-5 Certificates,
                  until the Certificate Principal Balance of such Class has been
                  reduced to zero; and

                  seventh, the lesser of (x) the excess of (i) the Principal
                  Distribution Amount over (ii) the sum of the amounts
                  distributed to the Holders of the Class A Certificates
                  pursuant to clause first of this Section 5.01(b)(ii), to the
                  Holders of the Class M-1 Certificates pursuant to clause
                  second of this Section 5.01(b)(ii), to the Holders of the
                  Class M-2 Certificates pursuant to clause third of this
                  Section 5.01(b)(ii), to the Holders of the Class M-3
                  Certificates pursuant to clause fourth of this Section
                  5.01(b)(ii), to the Holders of the Class M-4 Certificates
                  pursuant to clause fifth of this Section 5.01(b)(ii) and to
                  the Holders of the Class M-5 Certificates pursuant to clause
                  sixth of this Section 5.01(b)(ii) and (y) the Class M-6
                  Principal Distribution Amount, shall be distributed to the
                  Holders of the Class M-6 Certificates, until the Certificate
                  Principal Balance of such Class has been reduced to zero.

            (c) On each Distribution Date, the Securities Administrator shall
withdraw any amounts then on deposit in the Distribution Account that represent
Prepayment Charges and shall distribute such amounts to the Class P
Certificateholders as described above.

            (d) All distributions made with respect to each Class of
Certificates on each Distribution Date shall be allocated pro rata among the
outstanding Certificates in such Class based on their respective Percentage
Interests. Payments in respect of each Class of Certificates on each
Distribution Date will be made to the Holders of the respective Class of record
on the related Record Date (except as otherwise provided in Section 5.01(e) or
Section 10.01 respecting the final distribution on such Class), based on the
aggregate Percentage Interest represented by their respective Certificates, and
shall be made by wire transfer of immediately available funds to the account of
any such Holder at a bank or other entity having appropriate facilities
therefor, if such Holder shall have so notified the Securities Administrator in

                                     -113-
<PAGE>

writing at least five Business Days prior to the Record Date immediately prior
to such Distribution Date and is the registered owner of Certificates having an
initial aggregate Certificate Principal Balance that is in excess of the lesser
of (i) $5,000,000 or (ii) two-thirds of the initial Certificate Principal
Balance of such Class of Certificates, or otherwise by check mailed by first
class mail to the address of such Holder appearing in the Certificate Register.
The final distribution on each Certificate will be made in like manner, but only
upon presentment and surrender of such Certificate at the Corporate Trust Office
of the Securities Administrator or such other location specified in the notice
to Certifcateholders of such final distribution.

            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, the Servicer, MBIA, the Securities Administrator or the Master
Servicer shall have any responsibility therefor except as otherwise provided by
this Agreement or applicable law.

            (e) The rights of the Certificateholders to receive distributions in
respect of the Certificates, and all interests of the Certificateholders in such
distributions, shall be as set forth in this Agreement. None of the Holders of
any Class of Certificates, the Trustee, the Servicer, MBIA, the Securities
Administrator or the Master Servicer shall in any way be responsible or liable
to the Holders of any other Class of Certificates in respect of amounts properly
previously distributed on the Certificates.

            (f) Except as otherwise provided in Section 10.01, whenever the
Securities Administrator expects that the final distribution with respect to any
Class of Certificates will be made on the next Distribution Date, the Securities
Administrator shall, no later than three (3) days before the related
Distribution Date, mail to each Holder on such date of such Class of
Certificates a notice to the effect that:

            (i) the Securities Administrator expects 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 Securities Administrator therein
      specified, and

            (ii) no interest shall accrue on such Certificates from and after
      the end of the related Interest Accrual Period.

            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 by the Securities Administrator 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 5.01(f) shall not have been
surrendered for cancellation within six months after the time specified in such
notice, the Securities Administrator shall mail a second notice to the remaining
non-tendering Certificateholders to surrender their Certificates for
cancellation in order to receive the final

                                     -114-
<PAGE>

distribution with respect thereto. If within one year after the second notice
all such Certificates shall not have been surrendered for cancellation, the
Securities Administrator shall, directly or through an agent, mail a final
notice to the remaining non-tendering Certificateholders concerning surrender of
their Certificates but shall continue to hold any remaining funds for the
benefit of non-tendering Certificateholders. The costs and expenses of
maintaining the funds in trust and of contacting such Certificateholders shall
be paid out of the assets remaining in such trust fund. If within one year after
the final notice any such Certificates shall not have been surrendered for
cancellation, the Securities Administrator shall pay to the Depositor all such
amounts, and all rights of non-tendering Certificateholders in or to such
amounts shall thereupon cease. No interest shall accrue or be payable to any
Certificateholder on any amount held in trust by the Securities Administrator as
a result of such Certificateholder's failure to surrender its Certificate(s) on
the final Distribution Date for final payment thereof in accordance with this
Section 5.01(f). Any such amounts held in trust by the Securities Administrator
shall be held uninvested in an Eligible Account.

            (g) Notwithstanding anything to the contrary herein, (i) in no event
shall the Certificate Principal Balance of a Class A Certificate or a Mezzanine
Certificate be reduced more than once in respect of any particular amount both
(a) allocated to such Certificate in respect of Realized Losses pursuant to
Section 5.04 and (b) distributed to the Holder of such Certificate in reduction
of the Certificate Principal Balance thereof pursuant to this Section 5.01 from
Net Monthly Excess Cashflow and (ii) in no event shall the Uncertificated
Balance of a REMIC Regular Interest be reduced more than once in respect of any
particular amount both (a) allocated to such REMIC Regular Interest in respect
of Realized Losses pursuant to Section 5.04 and (b) distributed on such REMIC
Regular Interest in reduction of the Uncertificated Balance thereof pursuant to
this Section 5.01.

            SECTION 5.02. Statements to Certificateholders.

            On each Distribution Date, the Securities Administrator (based on
the information set forth in the Servicer Report for such Distribution Date)
shall make available to MBIA and each Holder of the Certificates, a statement as
to the distributions made on such Distribution Date setting forth:

            (i) the amount of the distribution made on such Distribution Date to
      the Holders of the Certificates of each Class allocable to principal, and
      the amount of the distribution made on such Distribution Date to the
      Holders of the Class P Certificates allocable to Prepayment Charges;

            (ii) the amount of the distribution made on such Distribution Date
      to the Holders of the Certificates of each Class allocable to interest;

            (iii) the aggregate Servicing Fee received by the Servicer and
      Master Servicing Fee received by the Master Servicer during the related
      Due Period;

            (iv) the aggregate amount of P&I Advances for such Distribution
      Date;

            (v) Reserved;

                                     -115-
<PAGE>

            (vi) the number, aggregate principal balance, weighted average
      remaining term to maturity and weighted average Mortgage Rate of the
      Mortgage Loans as of the related Due Date;

            (vii) the number and aggregate unpaid principal balance of Mortgage
      Loans (a) delinquent 30 to 59 days, (b) delinquent 60 to 89 days, (c)
      delinquent 90 or more days, in each case, as of the last day of the
      preceding calendar month, (d) as to which foreclosure proceedings have
      been commenced and (e) with respect to which the related Mortgagor has
      filed for protection under applicable bankruptcy laws, with respect to
      whom bankruptcy proceedings are pending or with respect to whom bankruptcy
      protection is in force;

            (viii) with respect to any Mortgage Loan that became an REO Property
      during the preceding calendar month, the loan number of such Mortgage
      Loan, the unpaid principal balance and the Scheduled Principal Balance of
      such Mortgage Loan;

            (ix) if available, the book value of any REO Property as of the
      close of business on the last Business Day of the calendar month preceding
      the Distribution Date;

            (x) the aggregate amount of Principal Prepayments made during the
      related Prepayment Period and the aggregate amount of any Prepayment
      Charges received in respect thereof;

            (xi) the aggregate amount of Realized Losses incurred during the
      related Prepayment Period and the aggregate amount of Realized Losses
      incurred since the Closing Date;

            (xii) the aggregate amount of Extraordinary Trust Fund Expenses
      withdrawn from the Distribution Account for such Distribution Date;

            (xiii) the aggregate Certificate Principal Balance of each Class of
      Certificates, after giving effect to the distributions, and allocations of
      Realized Losses, made on such Distribution Date, separately identifying
      any reduction thereof due to allocations of Realized Losses;

            (xiv) the Certificate Factor for each such Class of Certificates
      applicable to such Distribution Date;

            (xv) the Interest Distribution Amount in respect of the Class A
      Certificates, the Mezzanine Certificates and the Class CE Certificates for
      such Distribution Date and the Interest Carry Forward Amount, if any, with
      respect to the Class A Certificates and the Mezzanine Certificates on such
      Distribution Date, and in the case of the Class A Certificates and the
      Mezzanine Certificates, separately identifying any reduction thereof due
      to allocations of Realized Losses, Prepayment Interest Shortfalls, Relief
      Act Interest Shortfalls and Net WAC Rate Carryover Amounts;

                                     -116-
<PAGE>

            (xvi) the aggregate amount of any Prepayment Interest Shortfall for
      such Distribution Date, to the extent not covered by payments by the
      Servicer pursuant to Section 3.22 or the Master Servicer pursuant to
      Section 4.19;

            (xvii) the aggregate amount of Relief Act Interest Shortfalls for
      such Distribution Date;

            (xviii) the Required Overcollateralization Amount and the Credit
      Enhancement Percentage for such Distribution Date;

            (xix) the Overcollateralization Increase Amount, if any, for such
      Distribution Date;

            (xx) the Overcollateralization Reduction Amount, if any, for such
      Distribution Date;

            (xxi) the Net WAC Rate Carryover Amount, if any, for such
      Distribution Date;

            (xxii) the Net WAC Rate Carryover Amount, if any, outstanding after
      reimbursements therefor on such Distribution Date and any amounts received
      under the Cap Contracts;

            (xxiii) the respective Pass-Through Rates applicable to the Class A
      Certificates, the Mezzanine Certificates and the Class CE Certificates for
      such Distribution Date;

            (xxiv) the amount of any deposit to the Reserve Fund contemplated by
      Section 3.24(b);

            (xxv) the balance of the Reserve Fund prior to the deposit or
      withdrawal of any amounts on such Distribution Date;

            (xxvi) the amount of any withdrawal from the Reserve Fund pursuant
      to Section 5.01(a)(7)(xvii);

            (xxvii) the balance of the Reserve Fund after all deposits and
      withdrawals on such Distribution Date;

            (xxviii) the Loss Severity Percentage with respect to each Mortgage
      Loan; and

            (xxix) the Aggregate Loss Severity Percentage.

            The Securities Administrator will make such statement (and, at its
option, any additional files containing the same information in an alternative
format) available each month to MBIA, the Certificateholders and the Rating
Agencies via the Securities Administrator's internet website. The Securities
Administrator's internet website shall initially be located at
http:\\www.ctslink.com and assistance in using the website can be obtained by
calling the Securities Administrator's customer service desk at 1-301-815-6600.
Parties that are unable to use the above distribution options are entitled to
have a paper copy mailed to them via first class mail by calling the customer
service desk and indicating such. The

                                     -117-
<PAGE>

Securities Administrator shall have the right to change the way such statements
are distributed in order to make such distribution more convenient and/or more
accessible to the above parties and the Securities Administrator shall provide
timely and adequate notification to all above parties regarding any such
changes.

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

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

            Within a reasonable period of time after the end of each calendar
year, the Securities Administrator shall furnish upon request to each Person who
at any time during the calendar year was a Holder of a Residual Certificate a
statement setting forth the amount, if any, actually distributed with respect to
the Residual Certificates, as appropriate, aggregated for such calendar year or
applicable portion thereof during which such Person was a Certificateholder.

            The Securities Administrator shall, upon request, furnish to each
Certificateholder and MBIA, during the term of this Agreement, such periodic,
special, or other reports or information, whether or not provided for herein, as
shall be reasonable with respect to the Certificateholder or MBIA, as
applicable, or otherwise with respect to the purposes of this Agreement, all
such reports or information to be provided at the expense of the
Certificateholder or MBIA, in accordance with such reasonable and explicit
instructions and directions as the Certificateholder or MBIA may provide.

            On each Distribution Date the Securities Administrator shall provide
Bloomberg Financial Markets, L.P. ("Bloomberg") CUSIP level factors for each
class of Certificates as of such Distribution Date, using a format and media
mutually acceptable to the Securities Administrator and Bloomberg.

            SECTION 5.03. Servicer Reports; P&I Advances.

            (a) On or before 12:00 noon New York time on the second Business Day
following each Determination Date, the Servicer shall deliver to the Master
Servicer, MBIA and the Securities Administrator by telecopy or electronic mail
(or by such other means as the Servicer, the Master Servicer, the Securities
Administrator and MBIA may agree from time to time) a remittance report
containing such information with respect to the Mortgage Loans and the related
Distribution Date as is reasonably available to the Servicer as the Master
Servicer or the Securities Administrator may reasonably require so as to enable
the Master Servicer to master service the Mortgage Loans and oversee the
servicing by the Servicer and the Securities Administrator to fulfill its
obligations hereunder with respect to securities and tax reporting.

                                     -118-
<PAGE>

            (b) The amount of P&I Advances to be made by the Servicer on any
Distribution Date shall equal, subject to Section 5.03(d), (i) the aggregate
amount of Monthly Payments (net of the related Servicing Fee), due during the
related Due Period in respect of the Mortgage Loans, which Monthly Payments were
delinquent as of the close of business on the related Determination Date and
(ii) with respect to each REO Property, which REO Property was acquired during
or prior to the related Prepayment Period and as to which such REO Property an
REO Disposition did not occur during the related Prepayment Period, an amount
equal to the excess, if any, of the REO Imputed Interest on such REO Property
for the most recently ended calendar month, over the net income from such REO
Property deposited in the Collection Account pursuant to Section 3.21 for
distribution on such Distribution Date; provided, however, the Servicer shall
not be required to make P&I Advances with respect to Relief Act Interest
Shortfalls, or with respect to Prepayment Interest Shortfalls in excess of its
obligations under Section 3.22. For purposes of the preceding sentence, the
Monthly Payment on each Balloon Mortgage Loan with a delinquent Balloon Payment
is equal to the assumed monthly payment that would have been due on the related
Due Date based on the original principal amortization schedule for such Balloon
Mortgage Loan.

            By 12:00 noon New York time on the Servicer Remittance Date, the
Servicer shall remit in immediately available funds to the Securities
Administrator for deposit in the Distribution Account an amount equal to the
aggregate amount of P&I Advances, if any, to be made in respect of the Mortgage
Loans for the related Distribution Date either (i) from its own funds or (ii)
from the Collection Account, to the extent of any Amounts Held For Future
Distribution on deposit therein (in which case it will cause to be made an
appropriate entry in the records of the Collection Account that Amounts Held For
Future Distribution have been, as permitted by this Section 5.03, used by the
Servicer in discharge of any such P&I Advance) or (iii) in the form of any
combination of (i) and (ii) aggregating the total amount of P&I Advances to be
made by the Servicer with respect to the Mortgage Loans. Any Amounts Held For
Future Distribution used by the Servicer to make P&I Advances shall be
appropriately reflected in the Servicer's records and replaced by the Servicer
by deposit in the Collection Account no later than the close of business on the
Servicer Remittance Date immediately following the Due Period or Prepayment
Period for which such amounts relate. The Securities Administrator will notify
the Servicer by the close of business on the Business Day prior to the
Distribution Date in the event that the amount remitted by the Servicer to the
Securities Administrator on such date is less than the P&I Advances required to
be made by the Servicer for the related Distribution Date.

            (c) The obligation of the Servicer to make such P&I Advances is
mandatory, notwithstanding any other provision of this Agreement but subject to
(d) below, and, with respect to any Mortgage Loan or REO Property, shall
continue until a Final Recovery Determination in connection therewith or the
removal thereof from the Trust Fund pursuant to any applicable provision of this
Agreement, except as otherwise provided in this Section.

            (d) Notwithstanding anything herein to the contrary, no P&I Advance
or Servicing Advance shall be required to be made hereunder by the Servicer if
such P&I Advance or Servicing Advance would, if made, constitute a
Nonrecoverable P&I Advance or Nonrecoverable Servicing Advance, respectively.
The determination by the Servicer that it has made a Nonrecoverable P&I Advance

                                     -119-
<PAGE>

or a Nonrecoverable Servicing Advance or that any proposed P&I Advance or
Servicing Advance, if made, would constitute a Nonrecoverable P&I Advance or
Nonrecoverable Servicing Advance, respectively, shall be evidenced by a
certification of a Servicing Officer delivered to the Master Servicer.

            (e) Subject to and in accordance with the provisions of Article
VIII, in the event the Servicer fails to make any such P&I Advance, then the
Master Servicer (in its capacity as successor servicer) or any other successor
Servicer shall be required to make such P&I Advance on the Distribution Date on
which the Servicer was required to make such Advance, subject to its
determination of recoverability.

            SECTION 5.04. Allocation of Realized Losses.

            (a) Prior to the Determination Date, the Servicer shall determine as
to each Mortgage Loan and REO Property and include in the monthly remittance
report provided to the Master Servicer, MBIA and the Securities Administrator:
(i) the total amount of Realized Losses, if any, incurred in connection with any
Final Recovery Determinations made during the related Prepayment Period; and
(ii) the respective portions of such Realized Losses allocable to interest and
allocable to principal. Prior to each Determination Date, the Servicer shall
also determine as to each Mortgage Loan: (i) the total amount of Realized
Losses, if any, incurred in connection with any Deficient Valuations made during
the related Prepayment Period; and (ii) the total amount of Realized Losses, if
any, incurred in connection with Debt Service Reductions in respect of Monthly
Payments due during the related Due Period.

            (b) All Realized Losses on the Mortgage Loans allocated to any REMIC
I Regular Interest pursuant to Section 5.04(c) on the Mortgage Loans shall be
allocated by the Securities Administrator on each Distribution Date as follows:
first, to Net Monthly Excess Cashflow; second, to the Class CE Certificates,
until the Certificate Principal Balance thereof has been reduced to zero; third,
to the Class M-6 Certificates, until the Certificate Principal Balance thereof
has been reduced to zero; fourth, to the Class M-5 Certificates, until the
Certificate Principal Balance thereof has been reduced to zero; fifth, to the
Class M-4 Certificates, until the Certificate Principal Balance thereof has been
reduced to zero; sixth, to the Class M-3 Certificates, until the Certificate
Principal Balance thereof has been reduced to zero; seventh, to the Class M-2
Certificates, until the Certificate Principal Balance thereof has been reduced
to zero; and eighth, to the Class M-1 Certificates, until the Certificate
Principal Balance thereof has been reduced to zero. All Realized Losses to be
allocated to the Certificate Principal Balances of all Classes on any
Distribution Date shall be so allocated after the actual distributions to be
made on such date as provided above. All references above to the Certificate
Principal Balance of any Class of Certificates shall be to the Certificate
Principal Balance of such Class immediately prior to the relevant Distribution
Date, before reduction thereof by any Realized Losses, in each case to be
allocated to such Class of Certificates, on such Distribution Date.

            Any allocation of Realized Losses to a Mezzanine Certificate on any
Distribution Date shall be made by reducing the Certificate Principal Balance
thereof by the amount so allocated; any allocation of Realized Losses to a Class
CE Certificates shall be made by reducing the amount otherwise payable in

                                     -120-
<PAGE>

respect thereof pursuant to Section 5.01(a)(7)(xvii). No allocations of any
Realized Losses shall be made to the Certificate Principal Balances of the Class
A Certificates or the Class P Certificates.

            As used herein, an allocation of a Realized Loss on a "pro rata
basis" among two or more specified Classes of Certificates 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. 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.

            (c)(i) The REMIC I Marker Percentage of all Realized Losses on the
Mortgage Loans shall be allocated by the Trustee, based solely on the
instructions of the Securities Administrator, on each Distribution Date to the
following REMIC I Regular Interests in the specified percentages, as follows:
first, to Uncertificated Interest payable to the REMIC I Regular Interest I-LTAA
and REMIC I Regular Interest I-LTZZ up to an aggregate amount equal to the REMIC
I Interest Loss Allocation Amount, 98% and 2%, respectively; second, to the
Uncertificated Balances of the REMIC I Regular Interest I-LTAA and REMIC I
Regular Interest I-LTZZ up to an aggregate amount equal to the REMIC I Principal
Loss Allocation Amount, 98% and 2%, respectively; third, to the Uncertificated
Balances of REMIC I Regular Interest I-LTAA, REMIC I Regular Interest I-LTM6 and
REMIC I Regular Interest I-LTZZ, 98%, 1.00% and 1%, respectively, until the
Uncertificated Balances of REMIC I Regular Interest I-LTM6 has been reduced to
zero; fourth, to the Uncertificated Balances of REMIC I Regular Interest I-LTAA,
REMIC I Regular Interest I-LTM6 and REMIC I Regular Interest I-LTZZ, 98%, 1.00%
and 1%, respectively, until the Uncertificated Balances of REMIC I Regular
Interest I-LTM6 has been reduced to zero; fifth, to the Uncertificated Balances
of REMIC I Regular Interest I-LTAA, REMIC I Regular Interest I-LTM4 and REMIC I
Regular Interest I-LTZZ, 98%, 1.00% and 1%, respectively, until the
Uncertificated Balances of REMIC I Regular Interest I-LTM4 has been reduced to
zero; sixth to the Uncertificated Balances of REMIC I Regular Interest I-LTAA,
REMIC I Regular Interest I-LTM3 and REMIC I Regular Interest I-LTZZ, 98%, 1.00%,
and 1%, respectively, until the Uncertificated Balance of REMIC I Regular
Interest I-LTM3 has been reduced to zero; seventh to the Uncertificated Balances
of REMIC I Regular Interest I-LTAA, REMIC I Regular Interest I-LTM2 and REMIC I
Regular Interest I-LTZZ, 98%, 1% and 1%, respectively, until the Uncertificated
Balance of REMIC I Regular Interest I-LTM2 has been reduced to zero; and eighth
to the Uncertificated Balances of REMIC I Regular Interest I-LTAA, REMIC I
Regular Interest I-LTM1 and REMIC I Regular Interest I-LTZZ, 98%, 1% and 1%,
respectively, until the Uncertificated Balance of REMIC I Regular Interest
I-LTM1 has been reduced to zero.

            (ii) The REMIC I Sub WAC Allocation Percentage of all Realized
Losses shall be applied after all distributions have been made on each
Distribution Date first, so as to keep the Uncertificated Balance of each REMIC
I Regular Interest ending with the designation "B" equal to 0.01% of the
aggregate Stated Principal Balance of the Mortgage Loans in the related Loan
Group; second, to each REMIC I Regular Interest ending with the designation "A,"
so that the Uncertificated Balance of each such REMIC I Regular Interest is
equal to 0.01% of the excess of (x) the aggregate Stated Principal Balance of
the Mortgage Loans in the related Loan Group over (y) the current Certificate
Principal Balance of the Class A Certificate in the related Loan Group (except
that if any such excess is a larger number than

                                     -121-
<PAGE>

in the preceding distribution period, the least amount of Realized Losses shall
be applied to such REMIC I Regular Interests such that the REMIC I Subordinated
Balance Ratio is maintained); and third, any remaining Realized Losses shall be
allocated to REMIC I Regular Interest I-LTXX.

            SECTION 5.05. Compliance with Withholding Requirements.

            Notwithstanding any other provision of this Agreement, the Trustee
and the Securities Administrator shall comply with all federal withholding
requirements respecting payments to Certificateholders of interest or original
issue discount 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 Securities Administrator does withhold any amount
from interest or original issue discount payments or advances thereof to any
Certificateholder pursuant to federal withholding requirements, the Securities
Administrator shall indicate the amount withheld to such Certificateholders.

            SECTION 5.06. Reports Filed with Securities and Exchange Commission.

            The Depositor shall prepare or cause to be prepared the initial
current report on Form 8-K. Within 15 days after each Distribution Date, the
Securities Administrator shall, in accordance with industry standards, file with
the Commission via the Electronic Data Gathering and Retrieval System ("EDGAR"),
a Form 8-K with a copy of the statement to be furnished to the
Certificateholders for such Distribution Date as an exhibit thereto. Prior to
January 30, 2004, the Securities Administrator shall, in accordance with
industry standards, file a Form 15 Suspension Notice with respect to the Trust
Fund, if applicable. Prior to (i) March 20, 2004 and (ii) unless and until a
Form 15 Suspension Notice shall have been filed, prior to March 20th of each
year thereafter, the Master Servicer shall provide the Securities Administrator
with a Master Servicer Certification, together with a copy of the annual
independent accountant's servicing report and annual statement of compliance of
the Servicer to be delivered pursuant to this Agreement, and, if applicable, the
annual independent accountant's servicing report and annual statement of
compliance to be delivered by the Master Servicer pursuant to Sections 4.16 and
4.17. Prior to (i) March 31, 2004 and (ii) unless and until a Form 15 Suspension
Notice shall have been filed, March 31 of each year thereafter, the Securities
Administrator shall file a Form 10-K, in substance conforming to industry
standards, with respect to the Trust. Such Form 10-K shall include the Master
Servicer Certification and other documentation provided by the Master Servicer
pursuant to the second preceding sentence. The Depositor hereby grants to the
Securities Administrator a limited power of attorney to execute and file each
such document on behalf of the Depositor. Such power of attorney shall continue
until either the earlier of (i) receipt by the Securities Administrator from the
Depositor of written termination of such power of attorney and (ii) the
termination of the Trust Fund. The Depositor agrees to promptly furnish to the
Securities Administrator, from time to time upon request, such further
information, reports and financial statements within its control related to this
Agreement, the Mortgage Loans as the Securities Administrator reasonably deems
appropriate to prepare and file all necessary reports with the Commission. The
Securities Administrator shall have no responsibility to file any items other
than those specified in this Section 5.06; provided, however, the Securities
Administrator will cooperate with the Depositor in connection with any
additional filings with respect to the Trust Fund as the Depositor deems
necessary under the Securities

                                     -122-
<PAGE>

Exchange Act of 1934, as amended (the "Exchange Act"). Fees and expenses
incurred by the Securities Administrator in connection with this Section 5.06
shall not be reimbursable from the Trust Fund.

            SECTION 5.07. Policy Matters.

            (a) If, on the second Business Day before any Distribution Date, the
Securities Administrator determines that a Deficiency Amount exists on such
Distribution Date, the Securities Administrator shall give notice to MBIA and
the Fiscal Agent (as defined in the Class A-2B Policy), if any, by telephone or
telecopy of the amount of such Deficiency Amount, confirmed in writing by notice
substantially in the form of Exhibit A to the Class A-2B Policy by 12:00 noon,
New York City time on such second Business Day.

            (b) In the event the Securities Administrator receives a certified
copy of an order of the appropriate court regarding any Preference Amount (as
defined in the Class A-2B Policy), the Securities Administrator shall (i)
promptly notify MBIA and the Fiscal Agent, if any, and (ii) comply with the
provisions of the Class A-2B Policy to obtain payment by MBIA of such Preference
Amount. In addition, the Securities Administrator shall mail notice to all
Holders of the Class A-2B Certificates so affected that, in the event that any
such Holder's scheduled payment is a Preference Amount, such Holder will be
entitled to payment pursuant to the terms of the Class A-2B Policy, a copy of
which shall be made available to such Holders by the Securities Administrator.
The Securities Administrator shall furnish to MBIA and the Fiscal Agent, if any,
its records listing the payments on the affected Class A-2B Certificates, if
any, that have been made by the Securities Administrator and subsequently
recovered from the affected Holders, and the dates on which such payments were
made by the Securities Administrator.

            (c) At the time of the execution hereof, and for the purposes
hereof, the Securities Administrator shall establish a separate special purpose
trust account in the name of the Securities Administrator for the benefit of
Holders of the Class A-2B Certificates (the "Class A-2B Policy Payments
Account") over which the Securities Administrator shall have exclusive control
and sole right of withdrawal. The Class A-2B Policy Payments Account shall be an
Eligible Account. The Securities Administrator shall deposit any amount paid
under the Class A-2B Policy into the Class A-2B Policy Payments Account and
distribute such amount only for the purposes of making the payments to Holders
of the Class A-2B Certificates in respect of the Insured Payment for which the
related claim was made under the Class A-2B Policy. Such amounts shall be
allocated by the Securities Administrator to Holders of Class A-2B Certificates
affected by such shortfalls in the same manner as interest and principal
payments are to be allocated with respect to such Certificates pursuant to
Section 5.01. It shall not be necessary for such payments to be made by checks
or wire transfers separate from the checks or wire transfers used to make
regular payments hereunder with funds withdrawn from the Distribution Account.
However, any payments made on the Class A-2B Certificates from funds in the
Class A-2B Policy Payments Account shall be noted as provided in subsection (e)
below. Funds held in the Class A-2B Policy Payments Account shall not be
invested by the Securities Administrator.

            (d) Any funds received from MBIA for deposit into the Class A-2B
Policy Payments Account pursuant to the Class A-2B Policy in respect of a
Distribution Date or otherwise as a result of any

                                     -123-
<PAGE>

claim under the Class A-2B Policy shall be applied by the Securities
Administrator directly to the payment in full (i) of the Deficiency Amount due
on such Distribution Date on the Class A-2B Certificates, or (ii) of other
amounts payable under the Class A-2B Policy. Funds received by the Securities
Administrator as a result of any claim under the Class A-2B Policy shall be used
solely for payment to the Holders of the Class A-2B Certificates and may not be
applied for any other purpose, including, without limitation, satisfaction of
any costs, expenses or liabilities of the Trustee, the Securities Administrator,
the Depositor, the Seller, any Servicer, the Master Servicer or the Trust Fund.
Any funds remaining in the Class A-2B Policy Payments Account on the first
Business Day after each Distribution Date shall be remitted promptly to MBIA
pursuant to the written instruction of MBIA.

            (e) The Securities Administrator shall keep complete and accurate
records in respect of (i) all funds remitted to it by MBIA and deposited into
the Class A-2B Policy Payments Account and (ii) the allocation of such funds to
(A) payments of interest on and principal in respect of any Class A-2B
Certificates and (B) the amount of funds available to make distributions on the
Class A-2B Certificates pursuant to Section 5.01. MBIA shall have the right to
inspect such records at reasonable times during normal business hours upon three
Business Days' prior notice to the Securities Administrator.

            (f) The Securities Administrator acknowledges, and each Holder of a
Class A-2B Certificate by its acceptance of the Class A-2B Certificate agrees,
that, without the need for any further action on the part of MBIA or the
Securities Administrator to the extent MBIA makes payments, directly or
indirectly, on account of principal of or interest on any Class A-2B
Certificates, MBIA will be fully subrogated to the rights of the Holders of such
Class A-2B Certificates to receive such principal and interest from the Trust
Fund. The Holders of the Class A-2B Certificates, by acceptance of the Class
A-2B Certificates, assign their rights as Holders of the Class A-2B Certificates
to the extent of MBIA's interest with respect to amounts paid under the Class
A-2B Policy. Anything herein to the contrary notwithstanding, solely for
purposes of determining MBIA's rights, as applicable, as subrogee for payments
distributable pursuant to Section 5.01, any payment with respect to
distributions to the Class A-2B Certificates which is made with funds received
pursuant to the terms of the Class A-2B Policy, shall not be considered payment
of the Class A-2B Certificates from the Trust Fund and shall not result in the
distribution or the provision for the distribution in reduction of the
Certificate Principal Balance of the Class A-2B Certificates as described in
this Article V.

            The Trustee, the Securities Administrator, the Master Servicer and
the Servicer shall cooperate in all respects with any reasonable request by MBIA
for action to preserve or enforce MBIA's rights or interests under this
Agreement without limiting the rights or affecting the interests of the Holders
as otherwise set forth herein.

            (g) Upon its becoming aware of the occurrence of a Servicer Event of
Default or Master Servicer Event of Default, each of the Trustee and the
Securities Administrator shall promptly notify MBIA of such Servicer Event of
Default or Master Servicer Event of Default.

            (h) The Trustee and the Securities Administrator shall promptly
notify MBIA of either of the following as to which a Responsible Officer of the
Trustee or authorized officer of the Securities

                                     -124-
<PAGE>

Administrator has actual knowledge: (A) the commencement of any proceeding by or
against the Depositor commenced under the United States bankruptcy code or any
other applicable bankruptcy, insolvency, receivership, rehabilitation or similar
law (an "Insolvency Proceeding") and (B) the making of any claim in connection
with any proceeding seeking the avoidance as a preferential transfer (a
"Preference Claim") of any distribution made with respect to the Class A-2B
Certificates as to which it has actual knowledge. Each Holder of a Class A-2B
Certificate, by its purchase of Class A-2B Certificates, the Trustee and the
Securities Administrator hereby agree that MBIA (so long as no MBIA Default
exists) may at any time during the continuation of any proceeding relating to a
Preference Claim direct all matters relating to such Preference Claim,
including, without limitation, (i) the direction of any appeal of any order
relating to any Preference Claim and (ii) the posting of any surety, supersedeas
or performance bond pending any such appeal. In addition and without limitation
of the foregoing, MBIA shall be subrogated to the rights of the Securities
Administrator and each Holder of a Class A-2B Certificate in the conduct of any
Preference Claim, including, without limitation, all rights of any party to an
adversary proceeding action with respect to any court order issued in connection
with any such Preference Claim.

            (i) The Master Servicer shall designate an MBIA Contact Person who
shall be available to MBIA to provide reasonable access to information regarding
the Mortgage Loans. The initial MBIA Contact Person is to the attention of
Client Manager for ACE Securities Corp. Home Equity Loan Trust, Series 2003-HS1,
Asset Backed Pass-Through Certificates (410-884-2000).

            (j) The Securities Administrator shall promptly surrender the Class
A-2B Policy to MBIA for cancellation upon the reduction of the Certificate
Principal Balance of the Class A-2B Certificates to zero.

            (k) The Securities Administrator shall send to MBIA any statements
or communications sent to Holders of the Class A-2B Certificates, in each case
at the same time such reports, statements and communications are otherwise sent.

            (l) For so long as there is not continuing default by MBIA under its
obligations under the Class A-2B Policy (an "MBIA Default"), each Holder of a
Class A-2B Certificate agrees that MBIA shall be treated by the Depositor, the
Master Servicer, the Securities Administrator and the Trustee as if MBIA were
the Holder of all Class A-2B Certificates for the purpose (and solely for the
purpose) of the giving of any consent, the making of any direction or the
exercise of any voting or other control rights otherwise given the Holders of
the Class A-2B Certificates hereunder without any further consent of the Holders
of the Class A-2B Certificates and such holders shall not exercise such rights
without the prior written consent of MBIA.

            With respect to this Section 5.07, (i) the terms "Receipt" and
"Received" shall mean actual delivery to MBIA and MBIA's Fiscal Agent, if any,
received prior to 12:00 noon, New York City time, on a Business Day; delivery
either on a day that is not a Business Day or after 12:00 noon, New York City
time, shall be deemed to be Received on the next succeeding Business Day. If any
notice or certificate given under the Class A-2B Policy by the Securities
Administrator is not in proper form or is not properly completed, executed or
delivered, it shall be deemed not to have been Received. MBIA or its Fiscal
Agent,

                                     -125-
<PAGE>

if any, shall promptly so advise the Securities Administrator and the Securities
Administrator may submit an amended notice and (ii) "Business Day" means any day
other than (A) a Saturday or Sunday, (B) a day on which MBIA is closed or (C) a
day on which banking institutions in the City of New York, New York, or in which
the Corporate Trust Office of the Trustee or the Securities Administrator is
located, are authorized or obligated by law or executive order to be closed.

            (m) Unless otherwise designated in writing by the President or a
Managing Director of MBIA to the Securities Administrator, amounts payable to
MBIA pursuant to Section 5.01 shall be paid by the Securities Administrator to
MBIA by wire transfer with the following details specifically stated in the wire
transfer:

      Account Name:        MBIA Insurance Corporation
      Account Number:      910-2-721728
      Bank:                JPMorgan Chase Bank
                           4 Chase Metro Tech Center
                           Brooklyn, New York 11245
      ABA Number:          021-000-021
      Policy No.:          42230

                                     -126-
<PAGE>

                                   ARTICLE VI

                                THE CERTIFICATES

            SECTION 6.01. The Certificates.

            (a) The Certificates in the aggregate will represent the entire
beneficial ownership interest in the Mortgage Loans and all other assets
included in REMIC I.

            The Certificates will be substantially in the forms annexed hereto
as Exhibits A-1 through A-5. The Certificates of each Class will be issuable in
registered form only, in denominations of authorized Percentage Interests as
described in the definition thereof. Each Certificate will share ratably in all
rights of the related Class.

            Upon original issue, the Certificates shall be executed and
authenticated by the Securities Administrator and delivered by the Trustee to
and upon the order of the Depositor. The Certificates shall be executed by
manual or facsimile signature on behalf of the Trust by the Securities
Administrator by an authorized signatory. Certificates bearing the manual or
facsimile signatures of individuals who were at any time the proper officers of
the Securities Administrator shall bind the Trust, 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
herein executed by the Securities Administrator by manual signature, and such
certificate of authentication shall be conclusive evidence, and the only
evidence, that such Certificate has been duly authenticated and delivered
hereunder. All Certificates shall be dated the date of their authentication.

            (b) The Class A Certificates and the Mezzanine Certificates shall
initially be issued as one or more Certificates held by the Book-Entry Custodian
or, if appointed to hold such Certificates as provided below, the Depository and
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
Securities Administrator 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 such Certificates through the book-entry facilities of the Depository
and, except as provided below, shall not be entitled to definitive, fully
registered Certificates ("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 only
transfer the Ownership Interests 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 Securities Administrator
is hereby initially appointed as the Book-Entry Custodian and hereby agrees to
act as such in accordance herewith and in accordance with the agreement that it
has with the Depository authorizing it to act as such. The Book-Entry Custodian
may, and, if it is no longer qualified to act as such,

                                     -127-
<PAGE>

the Book-Entry Custodian shall, appoint, by a written instrument delivered to
the Depositor, the Servicer and, if the Trustee is not the Book-Entry Custodian,
the Trustee, any other transfer agent (including the Depository or any successor
Depository) to act as Book-Entry Custodian under such conditions as the
predecessor Book-Entry Custodian and the Depository or any successor Depository
may prescribe, provided that the predecessor Book-Entry Custodian shall not be
relieved of any of its duties or responsibilities by reason of any such
appointment of other than the Depository. If the Securities Administrator
resigns or is removed in accordance with the terms hereof, the successor
Securities Administrator or, if it so elects, the Depository shall immediately
succeed to its predecessor's duties as Book-Entry Custodian. The Depositor shall
have the right to inspect, and to obtain copies of, any Certificates held as
Book-Entry Certificates by the Book-Entry Custodian.

            The Trustee, the Servicer, the Securities Administrator, the Master
Servicer and the Depositor may for all purposes (including the making of
payments due on the Book-Entry Certificates) deal with the Depository as the
authorized representative of the Certificate Owners with respect to the
Book-Entry Certificates for the purposes of exercising the rights of
Certificateholders hereunder. The rights of Certificate Owners with respect to
the 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 the 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
Securities Administrator 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 Securities Administrator 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, (ii) the Depositor at its option advises the Securities
Administrator in writing that it elects to terminate the book-entry system
through the Depository or (iii) after the occurrence of a Servicer Event of
Default, Certificate Owners representing in the aggregate not less than 51% of
the Ownership Interests of the Book-Entry Certificates advise the Securities
Administrator through the Depository, in writing, that the continuation of a
book-entry system through the Depository is no longer in the best interests of
the Certificate Owners, the Securities Administrator 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 Securities Administrator of the
Book-Entry Certificates by the Book-Entry Custodian or the Depository, as
applicable, accompanied by registration instructions from the Depository for
registration of transfer, the Securities Administrator shall cause the
Definitive Certificates to be issued. Such Definitive Certificates will be
issued in minimum denominations of $10,000 except that any beneficial ownership
that was represented by a Book-Entry Certificate in an amount less than $10,000
immediately prior to the issuance of a Definitive Certificate shall be issued in
a minimum denomination equal to the amount represented by such Book-Entry
Certificate. None of the Depositor, the Servicer, the Master Servicer, the
Securities Administrator or the Trustee shall be liable for any delay in the
delivery of such instructions and may conclusively rely on, and shall be
protected in relying on, such instructions. Upon the issuance of Definitive
Certificates all references herein to obligations imposed upon or to be
performed by the Depository shall be deemed to be imposed upon

                                     -128-
<PAGE>

and performed by the Securities Administrator, to the extent applicable with
respect to such Definitive Certificates, and the Securities Administrator shall
recognize the Holders of the Definitive Certificates as Certificateholders
hereunder.

            SECTION 6.02. Registration of Transfer and Exchange of Certificates.

            (a) The Securities Administrator shall cause to be kept at one of
the offices or agencies to be appointed by the Securities Administrator in
accordance with the provisions of Section 9.11, a Certificate Register for the
Certificates in which, subject to such reasonable regulations as it may
prescribe, the Securities Administrator shall provide for the registration of
Certificates and of transfers and exchanges of Certificates as herein provided.

            (b) No transfer of any Class CE Certificate, Class P Certificate or
Residual Certificate shall be made unless that transfer is made pursuant to an
effective registration statement under the Securities Act of 1933, as amended
(the "1933 Act"), and effective registration or qualification under applicable
state securities laws, or is made in a transaction that does not require such
registration or qualification. In the event that such a transfer of a Class CE
Certificate, Class P Certificate or Residual Certificate is to be made without
registration or qualification (other than in connection with the initial
transfer of any such Certificate by the Depositor), the Securities Administrator
shall require receipt of: (i) if such transfer is purportedly being made in
reliance upon Rule 144A under the 1933 Act, written certifications from the
Certificateholder desiring to effect the transfer and from such
Certificateholder's prospective transferee, substantially in the form attached
hereto as Exhibit B-1; (ii) if such transfer is purportedly being made in
reliance upon Rule 501(a) under the 1933 Act, written certifications from the
Certificateholder desiring to effect the transfer and from such
Certificateholder's prospective transferee, substantially in the form attached
hereto as Exhibit B-2 and (iii) in all other cases, an Opinion of Counsel
satisfactory to the Securities Administrator that such transfer may be made
without such registration or qualification (which Opinion of Counsel shall not
be an expense of the Trust Fund or of the Depositor, the Trustee, the Master
Servicer, the Securities Administrator or the Servicer), together with copies of
the written certification(s) of the Certificateholder desiring to effect the
transfer and/or such Certificateholder's prospective transferee upon which such
Opinion of Counsel is based, if any. Neither of the Depositor nor the Securities
Administrator is obligated to register or qualify any such Certificates under
the 1933 Act or any other securities laws or to take any action not otherwise
required under this Agreement to permit the transfer of such Certificates
without registration or qualification. Any Certificateholder desiring to effect
the transfer of any such Certificate shall, and does hereby agree to, indemnify
the Trustee, the Depositor, the Master Servicer, the Securities Administrator
and the Servicer 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.

            (c) No transfer of a Class CE Certificate, Class P Certificate or a
Residual Certificate or any interest therein shall be made to any Plan subject
to ERISA or Section 4975 of the Code, any Person acting, directly or indirectly,
on behalf of any such Plan or any Person acquiring such Certificates with "Plan
Assets" of a Plan within the meaning of the Department of Labor regulation
promulgated at 29 C.F.R. ss. 2510.3-101 ("Plan Assets") unless the Securities
Administrator is provided with an Opinion of Counsel on which the Depositor, the
Master Servicer, the Securities Administrator, the Trustee and the

                                     -129-
<PAGE>

Servicer may rely, which establishes to the satisfaction of the Securities
Administrator that the purchase of such Certificates is permissible under
applicable law, will not constitute or result in any prohibited transaction
under ERISA or Section 4975 of the Code and will not subject the Depositor, the
Servicer, the Trustee, the Master Servicer, the Securities Administrator or the
Trust Fund 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, which Opinion of Counsel shall not be an expense of the Depositor,
the Servicer, the Trustee, the Master Servicer, the Securities Administrator or
the Trust Fund. An Opinion of Counsel will not be required in connection with
the initial transfer of any such Certificate by the Depositor to an affiliate of
the Depositor (in which case, the Depositor or any affiliate thereof shall have
deemed to have represented that such affiliate is not a Plan or a Person
investing Plan Assets) and the Securities Administrator shall be entitled to
conclusively rely upon a representation (which, upon the request of the
Securities Administrator, shall be a written representation) from the Depositor
of the status of such transferee as an affiliate of the Depositor.

            Each Transferee of a Mezzanine Certificate will be deemed to have
represented by virtue of its purchase or holding of such Certificate (or
interest therein) that either (a) such Transferee is not a Plan or purchasing
such Certificate with Plan Assets, (b) it has acquired and is holding such
Certificate in reliance on Prohibited Transaction Exemption ("PTE") 94-84 or FAN
97-03E, as amended by PTE 97-34, 62 Fed. Reg. 39021 (July 21, 1997), PTE
2000-58, 65 Fed. Reg. 67765 (November 13, 2000) and PTE 2002-41, 67 Fed. Reg.
54487 (August 22, 2002) (the "Exemption"), and that it understands that there
are certain conditions to the availability of the Exemption including that such
Certificate must be rated, at the time of purchase, not lower than "BBB-" (or
its equivalent) by a Rating Agency or (c) the following conditions are
satisfied: (i) such Transferee is an insurance company, (ii) the source of funds
used to purchase or hold such Certificate (or interest therein) is an "insurance
company general account" (as defined in U.S. Department of Labor Prohibited
Transaction Class Exemption ("PTCE") 95-60, and (iii) the conditions set forth
in Sections I and III of PTCE 95-60 have been satisfied. If any Mezzanine
Certificate or any interest therein is acquired or held in violation of the
conditions described in this paragraph, the next preceding permitted beneficial
owner will be treated as the beneficial owner of that Mezzanine Certificate,
retroactive to the date of transfer to the purported beneficial owner. Any
purported beneficial owner whose acquisition or holding of any such certificate
or interest therein was effected in violation of the conditions described in
this paragraph shall indemnify and hold harmless the Depositor, the Trustee, the
Servicer, the Master Servicer, the Securities Administrator and the Trust Fund
from and against any and all liabilities, claims, costs or expenses incurred by
those parties as a result of that acquisition or holding.

            (d) (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 Securities Administrator 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:

                                     -130-
<PAGE>

                        (A) Each Person holding or acquiring any Ownership
                  Interest in a Residual Certificate shall be a Permitted
                  Transferee and shall promptly notify the Securities
                  Administrator 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, an
                  affidavit and agreement (a "Transfer Affidavit and Agreement,"
                  in the form attached hereto as Exhibit B-3) from the proposed
                  Transferee, in form and substance satisfactory to the
                  Securities Administrator, representing and warranting, among
                  other things, that such Transferee 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 that 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 6.02(d) and agrees to be bound by
                  them.

                        (C) Notwithstanding the delivery of a Transfer Affidavit
                  and Agreement by a proposed Transferee under clause (B) above,
                  if an authorized officer of the Securities Administrator who
                  is 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 Transferor Affidavit
                  (in the form attached hereto as Exhibit B-2) to the Securities
                  Administrator stating that, among other things, it has no
                  actual knowledge that such other Person is not a Permitted
                  Transferee.

                        (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 Securities
                  Administrator written notice that it is a "pass-through
                  interest holder" within the meaning of temporary Treasury
                  regulation Section 1.67-3T(a)(2)(i)(A) immediately upon
                  acquiring an Ownership Interest in a Residual Certificate, if
                  it is, or is holding an Ownership Interest in a Residual
                  Certificate on behalf of, a "pass-through interest holder."

                  (ii) The Securities Administrator will register the Transfer
            of any Residual Certificate only if it shall have received the
            Transfer Affidavit and Agreement and all of

                                     -131-
<PAGE>

            such other documents as shall have been reasonably required by the
            Securities Administrator as a condition to such registration. In
            addition, no Transfer of a Residual Certificate shall be made unless
            the Securities Administrator shall have received a representation
            letter from the Transferee of such Certificate to the effect that
            such Transferee is a Permitted Transferee.

                  (iii) (A) If any purported Transferee shall become a Holder of
            a Residual Certificate in violation of the provisions of this
            Section 6.02(d), then the last preceding Permitted Transferee shall
            be restored, to the extent permitted by law, to all rights as holder
            thereof retroactive to the date of registration of such Transfer of
            such Residual Certificate. The Securities Administrator 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
            6.02(d) 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 6.02(d) 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 Securities
                  Administrator 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 Securities Administrator may
                  choose. Such purported Transferee shall promptly endorse and
                  deliver each Residual Certificate in accordance with the
                  instructions of the Securities Administrator. Such purchaser
                  may be the Securities Administrator itself or any Affiliate of
                  the Securities Administrator. The proceeds of such sale, net
                  of the commissions (which may include commissions payable to
                  the Securities Administrator or its Affiliates), 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 Securities Administrator, and the Securities
                  Administrator 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 Securities Administrator 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 described in Treasury regulations sections
            1.860D-1(b)(5) and 1.860E-2(a)(5) with respect to the "excess
            inclusions" of such Residual Certificate 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 Ownership Interest in a
            Residual Certificate having as among its record holders at any

                                     -132-
<PAGE>

                  time any Person which is a Disqualified Organization.
                  Reasonable compensation for providing such information may be
                  charged or collected by the Securities Administrator.

                  (v) The provisions of this Section 6.02(d) set forth prior to
            this subsection (v) may be modified, added to or eliminated,
            provided that there shall have been delivered to the Securities
            Administrator and MBIA at the expense of the party seeking to
            modify, add to or eliminate any such provision the following:

                        (A) written notification from each Rating Agency to the
                  effect that the modification, addition to or elimination of
                  such provisions will not cause such Rating Agency to downgrade
                  its then-current ratings of any Class of Certificates; and

                        (B) an Opinion of Counsel, in form and substance
                  satisfactory to the Securities Administrator, to the effect
                  that such modification of, addition to or elimination of such
                  provisions will not cause any Trust REMIC to cease to qualify
                  as a REMIC and will not cause any Trust REMIC, as the case may
                  be, to be subject to an entity-level tax caused by the
                  Transfer of any Residual Certificate to a Person that is not a
                  Permitted Transferee or a Person other than the prospective
                  transferee to be subject to a REMIC-tax caused by the Transfer
                  of a Residual Certificate to a Person that is not a Permitted
                  Transferee.

            (e) Subject to the preceding subsections, upon surrender for
registration of transfer of any Certificate at any office or agency of the
Securities Administrator maintained for such purpose pursuant to Section 9.11,
the Securities Administrator shall execute, 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.

            (f) At the option of the Holder thereof, any Certificate may be
exchanged for other Certificates of the same Class with authorized denominations
and a like aggregate Percentage Interest, upon surrender of such Certificate to
be exchanged at any office or agency of the Securities Administrator maintained
for such purpose pursuant to Section 9.11. Whenever any Certificates are so
surrendered for exchange, the Securities Administrator 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 Securities Administrator)
be duly endorsed by, or be accompanied by a written instrument of transfer in
the form satisfactory to the Securities Administrator duly executed by, the
Holder thereof or his attorney duly authorized in writing.

            (g) No service charge to the Certificateholders shall be made for
any transfer or exchange of Certificates, but the Securities Administrator 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.

                                     -133-
<PAGE>

            (h) All Certificates surrendered for transfer and exchange shall be
canceled and destroyed by the Securities Administrator in accordance with its
customary procedures.

            SECTION 6.03. Mutilated, Destroyed, Lost or Stolen Certificates.

            If (i) any mutilated Certificate is surrendered to the Securities
Administrator, or the Securities Administrator receives evidence to its
satisfaction of the destruction, loss or theft of any Certificate and of the
ownership thereof, and (ii) there is delivered to Securities Administrator (and,
with respect to the Class A-2B Certificates, to MBIA) such security or indemnity
as may be required by it to save it harmless, then, in the absence of actual
knowledge by the Securities Administrator that such Certificate has been
acquired by a bona fide purchaser, the Securities Administrator, 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
of like denomination and Percentage Interest. Upon the issuance of any new
Certificate under this Section, the Securities Administrator may require the
payment of a sum sufficient to cover any tax or other governmental charge that
may be imposed in relation thereto and any other expenses (including the fees
and expenses of the Securities Administrator) connected therewith. Any
replacement Certificate issued pursuant to this Section shall constitute
complete and indefeasible evidence of ownership in the applicable REMIC created
hereunder, as if originally issued, whether or not the lost, stolen or destroyed
Certificate shall be found at any time.

            SECTION 6.04. Persons Deemed Owners.

            The Depositor, the Servicer, the Trustee, the Master Servicer, the
Securities Administrator, MBIA 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 none of the Depositor, the Servicer, the Trustee,
the Master Servicer, the Securities Administrator, MBIA or any agent of any of
them shall be affected by notice to the contrary.

            SECTION 6.05. Certain Available Information.

            On or prior to the date of the first sale of any Class CE
Certificate, Class P Certificate or Residual Certificate to an Independent third
party, the Depositor shall provide to the Securities Administrator ten copies of
any private placement memorandum or other disclosure document used by the
Depositor in connection with the offer and sale of such Certificate. In
addition, if any such private placement memorandum or disclosure document is
revised, amended or supplemented at any time following the delivery thereof to
the Securities Administrator, the Depositor promptly shall inform the Securities
Administrator of such event and shall deliver to the Securities Administrator
ten copies of the private placement memorandum or disclosure document, as
revised, amended or supplemented. The Securities Administrator shall maintain at
its office as set forth in Section 12.05 hereof and shall make available free of
charge during normal business hours for review by any Holder of a Certificate or
any Person identified to the Securities Administrator as a prospective
transferee of a Certificate, originals or copies of the following items: (i) in
the case of a Holder or prospective transferee of a Class CE Certificate, Class
P Certificate or Residual Certificate, the related private placement memorandum
or other disclosure

                                     -134-
<PAGE>

document relating to such Class of Certificates, in the form most recently
provided to the Securities Administrator; and (ii) in all cases, (A) this
Agreement and any amendments hereof entered into pursuant to Section 11.01, (B)
all monthly statements required to be delivered to Certificateholders of the
relevant Class pursuant to Section 4.02 since the Closing Date, and all other
notices, reports, statements and written communications delivered to the
Certificateholders of the relevant Class pursuant to this Agreement since the
Closing Date and (C) any copies of all officers' certificates of the Servicer
since the Closing Date delivered to the Master Servicer to evidence such
Person's determination that any P&I Advance or Servicing Advance was, or if
made, would be a Nonrecoverable P&I Advance or Nonrecoverable Servicing Advance.
Copies and mailing of any and all of the foregoing items will be available from
the Securities Administrator upon request at the expense of the Person
requesting the same.

                                     -135-
<PAGE>

                                   ARTICLE VII

               THE DEPOSITOR, THE SERVICER AND THE MASTER SERVICER

            SECTION 7.01. Liability of the Depositor, the Servicer and the
            Master Servicer.

            The Depositor, the Servicer and the Master Servicer each shall be
liable in accordance herewith only to the extent of the obligations specifically
imposed by this Agreement upon them in their respective capacities as Depositor,
Servicer and Master Servicer and undertaken hereunder by the Depositor, the
Servicer and the Master Servicer herein.

            SECTION 7.02. Merger or Consolidation of the Depositor, the Servicer
            or the Master Servicer.

            Subject to the following paragraph, the Depositor will keep in full
effect its existence, rights and franchises as a corporation under the laws of
the jurisdiction of its incorporation. Subject to the following paragraph, the
Servicer will keep in full effect its existence, rights and franchises as a
federally chartered savings bank. Subject to the following paragraph, the Master
Servicer will keep in full effect its existence, rights and franchises as a
corporation under the laws of the jurisdiction of its formation. The Depositor,
the Servicer and the Master Servicer 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 or any of the Mortgage Loans
and to perform its respective duties under this Agreement.

            The Depositor, the Servicer or the Master Servicer may be merged or
consolidated with or into any Person, or transfer all or substantially all of
its assets to any Person, in which case any Person resulting from any merger or
consolidation to which the Depositor, the Servicer or the Master Servicer shall
be a party, or any Person succeeding to the business of the Depositor, the
Servicer or the Master Servicer, shall be the successor of the Depositor, the
Servicer 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 any successor of the Servicer or the Master Servicer shall meet
the eligibility requirements set forth in clauses (i) and (iii) of the last
paragraph of Section 8.02(a) or Section 7.06, as applicable.

            SECTION 7.03. Limitation on Liability of the Depositor, the
            Servicer, the Master Servicer and Others.

            None of the Depositor, the Servicer, the Master Servicer or any of
the directors, officers, employees or agents of the Depositor, the Servicer 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, the
Servicer, the Master Servicer or any such person against any breach of
warranties, representations or covenants made herein or against any specific
liability imposed on any

                                     -136-
<PAGE>

such Person pursuant hereto or 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 Servicer, the Master Servicer and any
director, officer, employee or agent of the Depositor, the Servicer and the
Master Servicer may rely in good faith on any document of any kind which, prima
facie, is properly executed and submitted by any Person respecting any matters
arising hereunder. The Depositor, the Servicer, the Master Servicer and any
director, officer, employee or agent of the Depositor, the Servicer 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 or the Certificates or any loss, liability or expense
incurred other than 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. None of the Depositor, the
Servicer or the Master Servicer shall be under any obligation to appear in,
prosecute or defend any legal action unless such action is related to its
respective duties under this Agreement and, in its opinion, does not involve it
in any expense or liability; provided, however, that each of the Depositor, the
Servicer and the Master Servicer may in its 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 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) shall be expenses, costs and liabilities of
the Trust Fund, and the Depositor, the Servicer and the Master Servicer shall be
entitled to be reimbursed therefor from the Collection Account or the
Distribution Account as and to the extent provided in Article III and Article
IV, any such right of reimbursement being prior to the rights of the
Certificateholders to receive any amount in the Collection Account and the
Distribution Account.

            Notwithstanding anything to the contrary contained herein, the
Servicer shall not be liable for any actions or inactions prior to the Cut-off
Date of any prior servicer of the Mortgage Loans.

            SECTION 7.04. Limitation on Resignation of the Servicer.

            (a) The Servicer shall not resign from the obligations and duties
hereby imposed on it except upon determination that its duties hereunder are no
longer permissible under applicable law or as provided in Section 7.04(c). Any
such determination pursuant to the preceding sentence permitting the resignation
of the Servicer shall be evidenced by an Opinion of Counsel to such effect
obtained at the expense of the Servicer and delivered to the Trustee, MBIA and
the Rating Agencies. No resignation of the Servicer shall become effective until
the Trustee or a successor Servicer shall have assumed the Servicer's
responsibilities, duties, liabilities (other than those liabilities arising
prior to the appointment of such successor) and obligations under this
Agreement.

            (b) Except as expressly provided herein, the Servicer shall not
assign or transfer any of its rights, benefits or privileges hereunder to any
other Person, or delegate to or subcontract with, or authorize or appoint any
other Person to perform any of the duties, covenants or obligations to be
performed by the Servicer hereunder. The foregoing prohibition on assignment
shall not prohibit the

                                     -137-
<PAGE>

Servicer from designating a Sub-Servicer as payee of any indemnification amount
payable to the Servicer hereunder; provided, however, that as provided in
Section 3.02, no Sub- Servicer shall be a third-party beneficiary hereunder and
the parties hereto shall not be required to recognize any Subservicer as an
indemnitee under this Agreement.

            (c) Notwithstanding anything to the contrary herein, the Servicer
may pledge or assign as collateral all its rights, title and interest under this
Agreement to a lender (the "Lender"), provided, that:

            (1) upon an Event of Default and receipt of a notice of termination
      by the Servicer, the Lender may direct the Servicer or its designee to
      appoint a successor Servicer pursuant to the provisions, and subject to
      the conditions, set forth in Section 8.02 regarding the Servicer's
      appointment of a successor Servicer;

            (2) the Lender's rights are subject to this Agreement; and

            (3) the Servicer shall remain subject to termination as servicer
      under this Agreement pursuant to the terms hereof.

            SECTION 7.05. Limitation on Resignation of the Master Servicer.

            The Master Servicer shall not resign from the obligations and duties
hereby imposed on it except upon determination that its duties hereunder are no
longer permissible under applicable law. Any such determination pursuant to the
preceding sentence permitting the resignation of the Master Servicer shall be
evidenced by an Opinion of Counsel to such effect obtained at the expense of the
Master Servicer and delivered to the Trustee, MBIA and the Rating Agencies. No
resignation of the Master Servicer shall become effective until the Trustee or a
successor Master Servicer shall have assumed the Master Servicer's
responsibilities, duties, liabilities (other than those liabilities arising
prior to the appointment of such successor) and obligations under this
Agreement.

            SECTION 7.06. Assignment of Master Servicing.

            The Master Servicer may sell and assign its rights and delegate its
duties and obligations in its entirety as Master Servicer under this Agreement;
provided, however, that: (i) the purchaser or transferee accept in writing such
assignment and delegation and assume the obligations of the Master Servicer
hereunder (a) shall be a Person which shall be qualified to service mortgage
loans for Fannie Mae or Freddie Mac; (b) shall have a net worth of not less than
$15,000,000 (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); and (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, any custodial agreement
from and after the effective date of such agreement; (ii) each Rating Agency and
MBIA shall be given prior written notice of

                                     -138-
<PAGE>

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 (determined without regard to the Class A-2B
Policy) will not be downgraded, qualified or withdrawn as a result of such
assignment, sale and delegation, as evidenced by a letter to such effect
delivered to the Master Servicer, MBIA and the Trustee; and (iii) the Master
Servicer assigning and selling the master servicing shall deliver to the Trustee
and MBIA an officer's certificate and an Opinion of Independent 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 out of acts or omissions prior to the effective date
thereof.

            SECTION 7.07. Rights of the Depositor in Respect of the Servicer and
            the Master Servicer.

            Each of the Master Servicer and the Servicer shall afford (and any
Sub-Servicing Agreement shall provide that each Sub-Servicer shall afford) the
Depositor and the Trustee, upon reasonable notice, during normal business hours,
access to all records maintained by the Master Servicer or the Servicer (and any
such Sub-Servicer) in respect of the Servicer's rights and obligations hereunder
and access to officers of the Master Servicer or the Servicer (and those of any
such Sub-Servicer) responsible for such obligations. Upon request, each of the
Master Servicer and the Servicer shall furnish to the Depositor and the Trustee
its (and any such Sub-Servicer's) most recent financial statements and such
other information relating to the Master Servicer's or Servicer's capacity to
perform its obligations under this Agreement as it possesses (and that any such
Sub- Servicer possesses). To the extent such information is not otherwise
available to the public, the Depositor and the Trustee shall not disseminate any
information obtained pursuant to the preceding two sentences without the Master
Servicer's or the Servicer's written consent, except as required pursuant to
this Agreement or to the extent that it is appropriate to do so (i) to its legal
counsel, auditors, taxing authorities or other governmental agencies and the
Certificateholders, (ii) pursuant to any law, rule, regulation, order, judgment,
writ, injunction or decree of any court or governmental authority having
jurisdiction over the Depositor and the Trustee or the Trust Fund, and in any
case, the Depositor or the Trustee, (iii) disclosure of any and all information
that is or becomes publicly known, or information obtained by the Trustee from
sources other than the Depositor, the Servicer or the Master Servicer, (iv)
disclosure as required pursuant to this Agreement or (v) disclosure of any and
all information (A) in any preliminary or final offering circular, registration
statement or contract or other document pertaining to the transactions
contemplated by the Agreement approved in advance by the Depositor, the Servicer
or the Master Servicer or (B) to any affiliate, independent or internal auditor,
agent, employee or attorney of the Trustee having a need to know the same,
provided that the Trustee advises such recipient of the confidential nature of
the information being disclosed, shall use its best efforts to assure the
confidentiality of any such disseminated non-public information. Nothing in this
Section 7.07 shall limit the obligation of the Servicer to comply with any
applicable law prohibiting disclosure of information regarding the Mortgagors
and the failure of the Servicer to provide access as provided in this Section
7.07 as a result of such obligation shall not constitute a breach of this
Section. Nothing in this Section 7.07 shall require the Servicer to collect,
create, collate or otherwise generate any information that it does not generate
in its usual course of business. The Servicer shall not be required to make
copies of or ship documents to any party unless provisions have been made for
the reimbursement of the costs

                                     -139-
<PAGE>

thereof. The Depositor may, but is not obligated to, enforce the obligations of
the Master Servicer and the Servicer under this Agreement and may, but is not
obligated to, perform, or cause a designee to perform, any defaulted obligation
of the Master Servicer or the Servicer under this Agreement or exercise the
rights of the Master Servicer or the Servicer under this Agreement; provided
that neither the Master Servicer nor the Servicer shall be relieved of any of
its obligations under this Agreement by virtue of such performance by the
Depositor or its designee. The Depositor shall not have any responsibility or
liability for any action or failure to act by the Master Servicer or the
Servicer and is not obligated to supervise the performance of the Master
Servicer or the Servicer under this Agreement or otherwise.

            SECTION 7.08. Duties of the Credit Risk Manager.

            For and on behalf of the Depositor, pursuant to the Credit Risk
Management Agreement the Credit Risk Manager will provide reports and
recommendations concerning certain delinquent and defaulted Mortgage Loans, and
as to the collection of any Prepayment Charges with respect to the Mortgage
Loans. Such reports and recommendations will be based upon information provided
to the Credit Risk Manager pursuant to the Credit Risk Management Agreement, and
the Credit Risk Manager shall look solely to the Servicer for all information
and data (including loss and delinquency information and data) relating to the
servicing of the related Mortgage Loans. Upon any termination of the Credit Risk
Manager or the appointment of a successor Credit Risk Manager, the Depositor
shall give written notice thereof to the Servicer, the Master Servicer, the
Trustee, and each Rating Agency. Notwithstanding the foregoing, the termination
of the Credit Risk Manager pursuant to this Section shall not become effective
until the appointment of a successor Credit Risk Manager.

            SECTION 7.09. Limitation Upon Liability of the Credit Risk Manager.

            Neither the Credit Risk Manager, nor any of its directors, officers,
employees, or agents shall be under any liability to the Trustee, the
Certificateholders, or the Depositor for any action taken or for refraining from
the taking of any action made in good faith pursuant to this Agreement, in
reliance upon information provided by the Servicer under the Credit Risk
Management Agreement, or for errors in judgment; provided, however, that this
provision shall not protect the Credit Risk Manager or any such person against
liability that would otherwise be imposed by reason of willful malfeasance or
bad faith in its performance of its duties. The Credit Risk Manager and any
director, officer, employee, or agent of the Credit Risk Manager 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, and may rely
in good faith upon the accuracy of information furnished by the Servicer
pursuant to the Credit Risk Management Agreement in the performance of its
duties thereunder and hereunder.

            SECTION 7.10. Removal of the Credit Risk Manager.

            The Credit Risk Manager may be removed as Credit Risk Manager by
Certificateholders holding not less than 66 2/3% of the Voting Rights in the
Trust Fund, in the exercise of its or their sole discretion. The
Certificateholders shall provide written notice of the Credit Risk Manager's
removal to the

                                     -140-
<PAGE>

Trustee. Upon receipt of such notice, the Trustee shall provide written notice
to the Credit Risk Manager of its removal, which shall be effective upon receipt
of such notice by the Credit Risk Manager.

                                     -141-
<PAGE>

                                  ARTICLE VIII

                                     DEFAULT

            SECTION 8.01. Servicer Events of Default.

            (a) "Servicer Event of Default," wherever used herein, means any one
of the following events:

                  (i) any failure by the Servicer to remit to the Securities
      Administrator for distribution to the Certificateholders any payment
      (other than a P&I Advance required to be made from its own funds on any
      Servicer Remittance Date pursuant to Section 5.03) required to be made
      under the terms of the Certificates and this Agreement which continues
      unremedied for a period of one Business Day after the date upon which
      written notice of such failure, requiring the same to be remedied, shall
      have been given to the Servicer by the Depositor or the Trustee (in which
      case notice shall be provided by telecopy), or to the Servicer, the
      Depositor, the Trustee and by the Holders of Certificates entitled to at
      least 25% of the Voting Rights; or

                  (ii) any failure on the part of the Servicer duly to observe
      or perform in any material respect any other of the covenants or
      agreements on the part of the Servicer contained in this Agreement, or the
      material breach by the Servicer of any representation and warranty
      contained in Section 2.05, which continues unremedied for a period of 30
      days after the date on which written notice of such failure, requiring the
      same to be remedied, shall have been given to the Servicer by the
      Depositor or the Trustee or to the Servicer, the Depositor and the Trustee
      by the Holders of Certificates entitled to at least 25% of the Voting
      Rights; provided, however, that in the case of a failure that cannot be
      cured within thirty (30) days, the cure period may be extended for an
      additional thirty (30) days if the Servicer can demonstrate to the
      reasonable satisfaction of the Trustee and MBIA that the Servicer is
      diligently pursuing remedial action; or

                  (iii) a decree or order of a court or agency or supervisory
      authority having jurisdiction in the premises 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, marshalling of assets and liabilities or
      similar proceeding, or for the winding-up or liquidation of its affairs,
      shall have been entered against the Servicer and such decree or order
      shall have remained in force undischarged or unstayed for a period of 90
      days; or

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

                  (v) the Servicer shall admit in writing its inability to pay
      its debts generally as they become due, file a petition to take advantage
      of any applicable insolvency or reorganization

                                     -142-
<PAGE>

      statute, make an assignment for the benefit of its creditors, or
      voluntarily suspend payment of its obligations;

                  (vi) failure by the Servicer to duly perform, within the
      required time period, its obligations under Section 3.17, 3.18 or 3.19
      which failure continues unremedied for a period of thirty (30) days after
      the date on which written notice of such failure, requiring the same to be
      remedied, shall have been given to the Servicer by any party to this
      Agreement; or

                  (vii) any failure of the Servicer to make any P&I Advance on
      any Servicer Remittance Date required to be made from its own funds
      pursuant to Section 5.03 which continues unremedied until 3:00 p.m. New
      York time on the Business Day immediately following the Servicer
      Remittance Date.

If a Servicer Event of Default described in clauses (i) through (vi) of this
Section shall occur, then, and in each and every such case, so long as such
Servicer Event of Default shall not have been remedied, the Depositor or the
Trustee may, and at the written direction of the Holders of Certificates
entitled to at least 51% of Voting Rights, the Trustee shall, by notice in
writing to the Servicer (and to the Depositor if given by the Trustee or to the
Trustee if given by the Depositor) with a copy to the Master Servicer, MBIA and
each Rating Agency, terminate all of the rights and obligations of the Servicer
in its capacity as Servicer under this Agreement, to the extent permitted by
law, and in and to the Mortgage Loans and the proceeds thereof. If a Servicer
Event of Default described in clause (vii) hereof shall occur, the Trustee
shall, by notice in writing to the Servicer, the Depositor, MBIA and the Master
Servicer, terminate all of the rights and obligations of the Servicer in its
capacity as Servicer under this Agreement and in and to the Mortgage Loans and
the proceeds thereof. Subject to Section 8.02, on or after the receipt by the
Servicer of such written notice, all authority and power of the Servicer under
this Agreement, whether with respect to the Certificates (other than as a Holder
of any Certificate) or the Mortgage Loans or otherwise, shall pass to and be
vested in the Master Servicer pursuant to and under this Section, and, without
limitation, the Master Servicer is hereby authorized and empowered, as
attorney-in-fact or otherwise, to execute and deliver, on behalf of and at the
expense of the Servicer, any and all documents and other instruments and to do
or accomplish all other acts or things necessary or appropriate to effect the
purposes of such notice of termination, whether to complete the transfer and
endorsement or assignment of the Mortgage Loans and related documents, or
otherwise. The Servicer agrees promptly (and in any event no later than ten
Business Days subsequent to such notice) to provide the Master Servicer with all
documents and records requested by it to enable it to assume the Servicer's
functions under this Agreement, and to cooperate with the Master Servicer in
effecting the termination of the Servicer's responsibilities and rights under
this Agreement, including, without limitation, the transfer within one Business
Day to the Master Servicer for administration by it of all cash amounts which at
the time shall be or should have been credited by the Servicer to the Collection
Account held by or on behalf of the Servicer or thereafter be received with
respect to the Mortgage Loans or any REO Property (provided, however, that the
Servicer shall continue to be entitled to receive all amounts accrued or owing
to it under this Agreement on or prior to the date of such termination, whether
in respect of P&I Advances, Servicing Advances, accrued and unpaid Servicing
Fees or otherwise, and shall continue to be entitled to the benefits of Section
7.03, notwithstanding any such termination, with respect to events occurring
prior to such termination). For purposes of this Section

                                     -143-
<PAGE>

8.01(a), the Trustee shall not be deemed to have knowledge of a Servicer Event
of Default unless a Responsible Officer of the Trustee assigned to and working
in the Trustee's Corporate Trust Office has actual knowledge thereof or unless
written notice of any event which is in fact such a Servicer Event of Default is
received by the Trustee and such notice references the Certificates, the Trust
or this Agreement. The Trustee shall promptly notify the Master Servicer, MBIA
and the Rating Agencies of the occurrence of a Servicer Event of Default of
which it has knowledge as provided above.

            The Master Servicer shall be entitled to be reimbursed by the
Servicer (or from amounts on deposit in the Distribution Account if the Servicer
is unable to fulfill its obligations hereunder) for all reasonable out-of-pocket
or third party costs associated with the transfer of servicing from the
predecessor Servicer (or if the predecessor Servicer is the Master Servicer,
from the Servicer immediately preceding the Master Servicer), including without
limitation, any reasonable out-of-pocket or third party costs or expenses
associated with the complete transfer of all servicing data and the completion,
correction or manipulation of such servicing data as may be required by the
Master Servicer to correct any errors or insufficiencies in the servicing data
or otherwise to enable the Master Servicer to service the Mortgage Loans
properly and effectively, upon presentation of reasonable documentation of such
costs and expenses.

            (b) "Master Servicer Event of Default," wherever used herein, means
any one of the following events:

                  (i) 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 this Agreement,
      or the breach by the Master Servicer of any representation and warranty
      contained in Section 2.04, which continues unremedied for a period of 30
      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
      Depositor or the Trustee or to the Master Servicer, the Depositor and the
      Trustee by the Holders of Certificates entitled to at least 25% of the
      Voting Rights; or

                  (ii) a decree or order of a court or agency or supervisory
      authority having jurisdiction in the premises 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, marshalling of assets and liabilities or
      similar proceeding, 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 90 days; or

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

                                     -144-
<PAGE>

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

If a Master Servicer Event of Default shall occur, then, and in each and every
such case, so long as such Master Servicer Event of Default shall not have been
remedied, the Depositor or the Trustee may, and at the written direction of the
Holders of Certificates entitled to at least 51% of Voting Rights, the Trustee
shall, by notice in writing to the Master Servicer (and to the Depositor if
given by the Trustee or to the Trustee if given by the Depositor) with a copy to
each Rating Agency and MBIA, terminate all of the rights and obligations of the
Master Servicer in its capacity as Master Servicer under this Agreement, to the
extent permitted by law, and in and to the Mortgage Loans and the proceeds
thereof. On or after the receipt by the Master Servicer of such written notice,
all authority and power of the Master Servicer under this Agreement, whether
with respect to the Certificates (other than as a Holder of any Certificate) or
the Mortgage Loans or otherwise including, without limitation, the compensation
payable to the Master Servicer under this Agreement, 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, as attorney-in-fact or otherwise, to
execute and deliver, on behalf of and at the expense of the Master Servicer, any
and all documents and other instruments and to do or accomplish all other acts
or things necessary or appropriate to effect the purposes of such notice of
termination, whether to complete the transfer and endorsement or assignment of
the Mortgage Loans and related documents, or otherwise. The Master Servicer
agrees promptly (and in any event no later than ten Business Days subsequent to
such notice) to provide the Trustee with all documents and records requested by
it to enable it to assume the Master Servicer's functions under this Agreement,
and to cooperate with the Trustee in effecting the termination of the Master
Servicer's responsibilities and rights under this Agreement (provided, however,
that the Master Servicer shall continue to be entitled to receive all amounts
accrued or owing to it under this Agreement on or prior to the date of such
termination and shall continue to be entitled to the benefits of Section 7.03,
notwithstanding any such termination, with respect to events occurring prior to
such termination). For purposes of this Section 8.01(b), the Trustee shall not
be deemed to have knowledge of a Master Servicer Event of Default unless a
Responsible Officer of the Trustee assigned to and working in the Trustee's
Corporate Trust Office has actual knowledge thereof or unless written notice of
any event which is in fact such a Master Servicer Event of Default is received
by the Trustee and such notice references the Certificates, the Trust or this
Agreement. The Trustee shall promptly notify the Rating Agencies and MBIA of the
occurrence of a Master Servicer Event of Default of which it has knowledge as
provided above.

            To the extent that the costs and expenses of the Trustee related to
the termination of the Master Servicer, appointment of a successor Master
Servicer or the transfer and assumption of the master servicing by the Trustee
(including, without limitation, (i) all legal costs and expenses and all due
diligence costs and expenses associated with an evaluation of the potential
termination of the Master Servicer as a result of a Master Servicer Event of
Default and (ii) all costs and expenses associated with the complete transfer of
the master servicing, including all servicing files and all servicing data and
the completion, correction or manipulation of such servicing data as may be
required by the successor Master Servicer to correct any errors or
insufficiencies in the servicing data or otherwise to enable the successor
Master

                                     -145-
<PAGE>

Servicer to master service the Mortgage Loans in accordance with this Agreement)
are not fully and timely reimbursed by the terminated Master Servicer, the
Trustee shall be entitled to reimbursement of such costs and expenses from the
Distribution Account.

            SECTION 8.02. Master Servicer to Act; Appointment of Successor.

            (a) On and after the time the Servicer receives a notice of
termination, the Master Servicer shall be the successor in all respects to the
Servicer in its capacity as Servicer under this Agreement and the transactions
set forth or provided for herein, and all the responsibilities, duties and
liabilities relating thereto and arising thereafter shall be assumed by the
Master Servicer (except for any representations or warranties of the Servicer
under this Agreement, the responsibilities, duties and liabilities contained in
Section 2.03 and the obligation to deposit amounts in respect of losses pursuant
to Section 3.23(c)) by the terms and provisions hereof including, without
limitation, the Servicer's obligations to make P&I Advances pursuant to Section
5.03; provided, however, that if the Master Servicer is prohibited by law or
regulation from obligating itself to make advances regarding delinquent mortgage
loans, then the Master Servicer shall not be obligated to make P&I Advances
pursuant to Section 5.03; and provided further, that any failure to perform such
duties or responsibilities caused by the Servicer's failure to provide
information required by Section 7.01 shall not be considered a default by the
Master Servicer as successor to the Servicer hereunder; provided, however, that
(1) it is understood and acknowledged by the parties hereto that there will be a
period of transition (not to exceed 90 days) before the actual servicing
functions can be fully transferred to the Master Servicer or any successor
Servicer appointed in accordance with the following provisions and (2) any
failure to perform such duties or responsibilities caused by the Servicer's
failure to provide information required by Section 8.01 shall not be considered
a default by the Master Servicer as successor to the Servicer hereunder. As
compensation therefor, the Master Servicer shall be entitled to the Servicing
Fee and all funds relating to the Mortgage Loans to which the Servicer would
have been entitled if it had continued to act hereunder. Notwithstanding the
above and subject to the immediately following paragraph, the Master Servicer
may, if it shall be unwilling to so act, or shall, if it is unable to so act
promptly appoint or petition a court of competent jurisdiction to appoint, a
Person that satisfies the eligibility criteria set forth below as the successor
to the Servicer under this Agreement in the assumption of all or any part of the
responsibilities, duties or liabilities of the Servicer under this Agreement.

            Notwithstanding anything herein to the contrary, in no event shall
the Trustee or the Master Servicer be liable for any Servicing Fee or for any
differential in the amount of the Servicing Fee paid hereunder and the amount
necessary to induce any successor Servicer to act as successor Servicer under
this Agreement and the transactions set forth or provided for herein.

            Any successor Servicer appointed under this Agreement must (i) be an
established mortgage loan servicing institution that is a Fannie Mae and Freddie
Mac approved seller/servicer, (ii) be approved by each Rating Agency by a
written confirmation from each Rating Agency that the appointment of such
successor Servicer would not result in the reduction or withdrawal of the then
current ratings of any outstanding Class of Certificates, (iii) have a net worth
of not less than $15,000,000 and (iv) assume all the responsibilities, duties or
liabilities of the Servicer (other than liabilities of the Servicer hereunder
incurred

                                     -146-
<PAGE>

prior to termination of the Servicer under Section 8.01 herein) under this
Agreement as if originally named as a party to this Agreement.

            (b)(1) All servicing transfer costs (including, without limitation,
servicing transfer costs of the type described in Section 8.02(a) and incurred
by the Trustee, the Master Servicer and any successor Servicer under paragraph
(b)(2) below) shall be paid by the terminated Servicer upon presentation of
reasonable documentation of such costs, and if such predecessor or initial
Servicer, as applicable, defaults in its obligation to pay such costs, the
successor Servicer, the Master Servicer and the Trustee shall be entitled to
reimbursement therefor from the assets of the Trust Fund.

            (2) No appointment of a successor to the Servicer under this
Agreement shall be effective until the assumption by the successor of all of the
Servicer's responsibilities, duties and liabilities hereunder. In connection
with such appointment and assumption described herein, 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 Servicer as such
hereunder. The Depositor, the Trustee and such successor shall take such action,
consistent with this Agreement, as shall be necessary to effectuate any such
succession. Pending appointment of a successor to the Servicer under this
Agreement, the Master Servicer shall act in such capacity as hereinabove
provided.

            SECTION 8.03. Notification to Certificateholders.

            (a) Upon any termination of the Servicer or the Master Servicer
pursuant to Section 8.01(a) or (b) or any appointment of a successor to the
Servicer or the Master Servicer pursuant to Section 8.02, the Trustee shall give
prompt written notice thereof to MBIA and the Certificateholders at their
respective addresses appearing in the Certificate Register.

            (b) Not later than the later of 60 days after the occurrence of any
event, which constitutes or which, with notice or lapse of time or both, would
constitute a Servicer Event of Default or a Master Servicer Event of Default or
five days after a Responsible Officer of the Trustee becomes aware of the
occurrence of such an event, the Trustee shall transmit by mail to MBIA and all
Holders of Certificates notice of each such occurrence, unless such default or
Servicer Event of Default or Master Servicer Event of Default shall have been
cured or waived.

            SECTION 8.04. Waiver of Servicer Events of Default.

            The Holders representing at least 66% of the Voting Rights evidenced
by all Classes of Certificates affected by any default, Servicer Event of
Default or Master Servicer Event of Default hereunder may waive such default,
Servicer Event of Default or Master Servicer Event of Default; provided,
however, that a Servicer Event of Default under clause (i) or (vii) of Section
8.01(a) may be waived only by all of the Holders of the Regular Certificates.
Upon any such waiver of a default, Servicer Event of Default or Master Servicer
Event of Default, such default, Servicer Event of Default or Master Servicer
Event of Default shall cease to exist and shall be deemed to have been remedied
for every purpose

                                     -147-
<PAGE>

hereunder. No such waiver shall extend to any subsequent or other default,
Servicer Event of Default or Master Servicer Event of Default or impair any
right consequent thereon except to the extent expressly so waived. The Trustee
shall give notice of any such waiver to MBIA.

                                     -148-
<PAGE>

                                   ARTICLE IX

             CONCERNING THE TRUSTEE AND THE SECURITIES ADMINISTRATOR

            SECTION 9.01. Duties of Trustee and Securities Administrator.

            The Trustee, prior to the occurrence of a Master Servicer Event of
Default and after the curing or waiver of all Master Servicer Events of Default
which may have occurred, and the Securities Administrator each undertake to
perform such duties and only such duties as are specifically set forth in this
Agreement as duties of the Trustee and the Securities Administrator,
respectively. During the continuance of a Master Servicer Event of Default, 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 its exercise as a
prudent person would exercise or use under the circumstances in the conduct of
such person's own affairs. Any permissive right of the Trustee enumerated in
this Agreement shall not be construed as a duty.

            Each of the Trustee and the Securities Administrator, upon receipt
of all resolutions, certificates, statements, opinions, reports, documents,
orders or other instruments furnished to it, which are specifically required to
be furnished pursuant to any provision of this Agreement, shall examine them to
determine whether they conform to 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 or the Securities Administrator, as the case may
be, shall take such action as it deems appropriate to have the instrument
corrected, and if the instrument is not corrected to its satisfaction, the
Securities Administrator will provide notice to the Trustee thereof and the
Trustee will provide notice to the Certificateholders and MBIA.

            The Trustee shall promptly remit to the Servicer any complaint,
claim, demand, notice or other document (collectively, the "Notices") delivered
to the Trustee as a consequence of the assignment of any Mortgage Loan hereunder
and relating to the servicing of the Mortgage Loans; provided than any such
notice (i) is delivered to the Trustee at its Corporate Trust Office, (ii)
contains information sufficient to permit the Trustee to make a determination
that the real property to which such document relates is a Mortgaged Property.
The Trustee shall have no duty hereunder with respect to any Notice it may
receive or which may be alleged to have been delivered to or served upon it
unless such Notice is delivered to it or served upon it at its Corporate Trust
Office and such Notice contains the information required pursuant to clause (ii)
of the preceding sentence.

            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 misconduct; provided, however, that:

                  (i) Prior to the occurrence of a Master Servicer Event of
            Default, and after the curing or waiver of all such Master Servicer
            Events of Default which may have occurred with respect to the
            Trustee and at all times with respect to the Securities
            Administrator, the duties and obligations of the Trustee shall be
            determined solely by the express provisions of this Agreement,
            neither the Trustee nor the Securities Administrator shall be liable
            except for the performance of such duties and obligations as are
            specifically

                                     -149-
<PAGE>

            set forth in this Agreement, no implied covenants or obligations
            shall be read into this Agreement against the Trustee or the
            Securities Administrator and, in the absence of bad faith on the
            part of the Trustee or the Securities Administrator, respectively,
            the Trustee or the Securities Administrator, respectively, 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 or the Securities
            Administrator, respectively, that conform to the requirements of
            this Agreement;

                  (ii) Neither the Trustee nor the Securities Administrator
            shall be liable for an error of judgment made in good faith by a
            Responsible Officer or Responsible Officers of the Trustee or an
            officer or officers of the Securities Administrator, respectively,
            unless it shall be proved that the Trustee or the Securities
            Administrator, respectively, was negligent in ascertaining the
            pertinent facts; and

                  (iii) Neither the Trustee nor the Securities Administrator
            shall 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
            the Securities Administrator or exercising any trust or power
            conferred upon the Trustee or the Securities Administrator under
            this Agreement.

            SECTION 9.02. Certain Matters Affecting Trustee and Securities
            Administrator.

            (a) Except as otherwise provided in Section 8.01:

                  (i) The Trustee and the Securities Administrator may request
            and rely upon and shall be protected in acting or refraining from
            acting 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;

                  (ii) The Trustee and the Securities Administrator may consult
            with counsel of its selection and any advice of such counsel or 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 with such advice or
            Opinion of Counsel;

                  (iii) Neither the Trustee nor the Securities Administrator
            shall be under any obligation to exercise any of the trusts or
            powers vested in it by this Agreement or to institute, conduct or
            defend any litigation hereunder or in relation hereto at the
            request, order or direction of any of the Certificateholders,
            pursuant to the provisions of this Agreement, unless such
            Certificateholders shall have offered to the Trustee or the
            Securities Administrator, as the case may be, reasonable security or
            indemnity satisfactory

                                     -150-
<PAGE>

            to it 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 a Master Servicer Event of Default (which has not been cured or
            waived), 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 person would exercise or use under the
            circumstances in the conduct of such person's own affairs;

                  (iv) Neither the Trustee nor the Securities Administrator
            shall 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;

                  (v) Prior to the occurrence of a Master Servicer Event of
            Default hereunder and after the curing or waiver of all Master
            Servicer Events of Default which may have occurred with respect to
            the Trustee and at all times with respect to the Securities
            Administrator, neither the Trustee nor the Securities Administrator
            shall 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 or the Securities Administrator 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 or the
            Securities Administrator, as applicable, not reasonably assured to
            the Trustee or the Securities Administrator by such
            Certificateholders, the Trustee or the Securities Administrator, as
            applicable, may require reasonable indemnity satisfactory to it
            against such expense, or liability from such Certificateholders as a
            condition to taking any such action;

                  (vi) 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 the Trustee shall not be responsible
            for any misconduct or negligence on the part of any agent or
            attorney appointed with due care by it hereunder;

                  (vii) The Trustee shall not be liable for any loss resulting
            from the investment of funds held in the Collection Account at the
            direction of the Servicer pursuant to Section 3.23(c), for any loss
            resulting from the investment of funds held in the Reserve Fund at
            the direction of the Holder of the Class CE Certificate or for any
            loss resulting from the redemption or sale of any such investment as
            therein authorized;

                  (viii) the Trustee shall not be deemed to have notice of any
            default, Master Servicer Event of Default or Servicer Event of
            Default unless a Responsible Officer of the Trustee has knowledge
            thereof or unless written notice of any event which is in fact such
            a default is received by the Trustee at the Corporate Trust Office
            of the Trustee, and such notice references the Certificates and this
            Agreement; and

                                     -151-
<PAGE>

                  (ix) the rights, privileges, protections, immunities and
            benefits given to the Trustee, including, without limitation, its
            right to be indemnified, are extended to, and shall be enforceable
            by, each agent, custodian and other Person employed to act
            hereunder.

            (b) All rights of action under this Agreement or under any of the
Certificates, enforceable by the Trustee, may be enforced by it without the
possession of any of the Certificates, or the production thereof at the trial or
other proceeding relating thereto, and any such suit, action or proceeding
instituted by the Trustee shall be brought in its name for the benefit of all
the Holders of such Certificates, subject to the provisions of this Agreement.

            SECTION 9.03. Trustee and Securities Administrator not Liable for
            Certificates or Mortgage Loans.

            The recitals contained herein and in the Certificates (other than
the signature of the Securities Administrator, the authentication of the
Securities Administrator on the Certificates, the acknowledgments of the Trustee
contained in Article II and the representations and warranties of the Trustee in
Section 9.12) shall be taken as the statements of the Depositor and neither the
Trustee nor the Securities Administrator assumes any responsibility for their
correctness. Neither the Trustee nor the Securities Administrator makes any
representations or warranties as to the validity or sufficiency of this
Agreement (other than as specifically set forth in Section 9.12) or of the
Certificates (other than the signature of the Securities Administrator and
authentication of the Securities Administrator on the Certificates) or of any
Mortgage Loan or related document. The Trustee and the Securities Administrator
shall not be accountable for the use or application by the Depositor of any of
the Certificates or of the proceeds of such Certificates, 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 Collection Account
by the Servicer, other than any funds held by or on behalf of the Trustee in
accordance with Section 3.23 and 3.24.

            SECTION 9.04. Trustee and Securities Administrator May Own
            Certificates.

            Each of the Trustee and the Securities Administrator in its
individual capacity or any other capacity may become the owner or pledgee of
Certificates and may transact business with other interested parties and their
Affiliates with the same rights it would have if it were not Trustee or the
Securities Administrator.

            SECTION 9.05. Fees and Expenses of Trustee and Securities
            Administrator.

            The fees of the Trustee and the Securities Administrator hereunder
and of Wells Fargo under the Custodial Agreement shall be paid in accordance
with a side letter agreement with the Master Servicer and at the sole expense of
the Master Servicer. In addition, the Trustee, the Securities Administrator, the
Custodian and any director, officer, employee or agent of the Trustee, the
Securities Administrator and the Custodian shall be indemnified by the Trust and
held harmless against any loss,

                                     -152-
<PAGE>

liability or expense (including reasonable attorney's fees and expenses)
incurred by the Trustee, the Custodian or the Securities Administrator in
connection with any claim or legal action or any pending or threatened claim or
legal action arising out of or in connection with the acceptance or
administration of its respective obligations and duties under this Agreement,
including any and all other agreements related hereto, other than any loss,
liability or expense (i) for which the Trustee is indemnified by the Master
Servicer or the Servicer, (ii) that constitutes a specific liability of the
Trustee or the Securities Administrator pursuant to Section 11.01(g) or (iii)
any loss, liability or expense incurred by reason of willful misfeasance, bad
faith or negligence in the performance of duties hereunder by the Trustee or the
Securities Administrator or by reason of reckless disregard of obligations and
duties hereunder. In no event shall the Trustee or the Securities Administrator
be liable for special, indirect or consequential loss or damage of any kind
whatsoever (including but not limited to lost profits), even if it has been
advised of the likelihood of such loss or damage and regardless of the form of
action. The Master Servicer agrees to indemnify the Trustee, from, and hold the
Trustee harmless against, any loss, liability or expense (including reasonable
attorney's fees and expenses) incurred by the Trustee by reason of the Master
Servicer's willful misfeasance, bad faith or gross negligence in the performance
of its duties under this Agreement or by reason of the Master Servicer's
reckless disregard of its obligations and duties under this Agreement. Such
indemnity shall survive the termination or discharge of this Agreement and the
resignation or removal of the Trustee. Any payment hereunder made by the Master
Servicer to the Trustee shall be from the Master Servicer's own funds, without
reimbursement from REMIC I therefor.

            SECTION 9.06. Eligibility Requirements for Trustee and Securities
            Administrator.

            The Trustee and the Securities Administrator shall at all times be a
corporation or an association (other than the Depositor, the Seller, the Master
Servicer or any Affiliate of the foregoing) organized and doing business under
the laws of any state or the United States of America, authorized under such
laws to exercise corporate trust powers, having a combined capital and surplus
of at least $50,000,000 (or a member of a bank holding company whose capital and
surplus is at least $50,000,000) and subject to supervision or examination by
federal or state authority. If such corporation or association publishes reports
of conditions at least annually, pursuant to law or to the requirements of the
aforesaid supervising or examining authority, then for the purposes of this
Section the combined capital and surplus of such corporation or association
shall be deemed to be its combined capital and surplus as set forth in its most
recent report of conditions so published. In case at any time the Trustee or the
Securities Administrator, as applicable, shall cease to be eligible in
accordance with the provisions of this Section, the Trustee or the Securities
Administrator, as applicable, shall resign immediately in the manner and with
the effect specified in Section 9.07.

            SECTION 9.07. Resignation and Removal of Trustee and Securities
            Administrator.

            The Trustee and the Securities Administrator may at any time resign
and be discharged from the trust hereby created by giving written notice thereof
to the Depositor, to the Master Servicer, to the Securities Administrator (or
the Trustee, if the Securities Administrator resigns) and to the
Certificateholders, with a copy to MBIA. Upon receiving such notice of
resignation, the Depositor shall promptly appoint a successor trustee or
successor securities administrator by written instrument, in

                                     -153-
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duplicate, which instrument shall be delivered to the resigning Trustee or
Securities Administrator, as applicable, and to the successor trustee or
successor securities administrator, as applicable. A copy of such instrument
shall be delivered to the Certificateholders, the Trustee, the Securities
Administrator and the Master Servicer by the Depositor. If no successor trustee
or successor securities administrator shall have been so appointed and have
accepted appointment within 30 days after the giving of such notice of
resignation, the resigning Trustee or Securities Administrator, as the case may
be, may, at the expense of the Trust Fund, petition any court of competent
jurisdiction for the appointment of a successor trustee, successor securities
administrator, Trustee or Securities Administrator, as applicable.

            If at any time the Trustee or the Securities Administrator shall
cease to be eligible in accordance with the provisions of Section 9.06 and shall
fail to resign after written request therefor by the Depositor, or if at any
time the Trustee or the Securities Administrator shall become incapable of
acting, or shall be adjudged bankrupt or insolvent, or a receiver of the Trustee
or the Securities Administrator or of its property shall be appointed, or any
public officer shall take charge or control of the Trustee or the Securities
Administrator or of its property or affairs for the purpose of rehabilitation,
conservation or liquidation, then the Depositor may remove the Trustee or the
Securities Administrator, as applicable and appoint a successor trustee or
successor securities administrator, as applicable, by written instrument, in
duplicate, which instrument shall be delivered to the Trustee or the Securities
Administrator so removed and to the successor trustee or successor securities
administrator. A copy of such instrument shall be delivered to MBIA, the
Certificateholders, the Trustee, the Securities Administrator and the Master
Servicer by the Depositor.

            The Holders of Certificates entitled to at least 51% of the Voting
Rights may at any time remove the Trustee or the Securities Administrator and
appoint a successor trustee or successor securities administrator 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 Depositor, one complete set to the Trustee or the Securities
Administrator so removed and one complete set to the successor so appointed. A
copy of such instrument shall be delivered to the Certificateholders, the
Trustee (in the case of the removal of the Securities Administrator), the
Securities Administrator (in the case of the removal of the Trustee), MBIA and
the Master Servicer by the Depositor.

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

            Notwithstanding anything to the contrary contained herein, the
Master Servicer and the Securities Administrator shall at all times be the same
Person.

            SECTION 9.08. Successor Trustee or Securities Administrator.

            Any successor trustee or successor securities administrator
appointed as provided in Section 9.07 shall execute, acknowledge and deliver to
the Depositor and its predecessor trustee or

                                     -154-
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predecessor securities administrator an instrument accepting such appointment
hereunder, and thereupon the resignation or removal of the predecessor trustee
or predecessor securities administrator shall become effective and such
successor trustee or successor securities administrator 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 or securities administrator herein. The predecessor
trustee or predecessor securities administrator shall deliver to the successor
trustee or successor securities administrator all Mortgage Loan Documents and
related documents and statements to the extent held by it hereunder, as well as
all moneys, held by it hereunder, and the Depositor and the predecessor trustee
or predecessor securities administrator shall execute and deliver such
instruments and do such other things as may reasonably be required for more
fully and certainly vesting and confirming in the successor trustee or successor
securities administrator all such rights, powers, duties and obligations.

            No successor trustee or successor securities administrator shall
accept appointment as provided in this Section unless at the time of such
acceptance such successor trustee or successor securities administrator shall be
eligible under the provisions of Section 8.06 and the appointment of such
successor trustee or successor securities administrator shall not result in a
downgrading of any Class of Certificates by any Rating Agency (determined
without regard to the Class A-2B Policy), as evidenced by a letter from each
Rating Agency.

            Upon acceptance of appointment by a successor trustee or successor
securities administrator as provided in this Section, the Depositor shall mail
notice of the succession of such trustee hereunder to MBIA and all Holders of
Certificates at their addresses as shown in the Certificate Register. If the
Depositor fails to mail such notice within 10 days after acceptance of
appointment by the successor trustee or successor securities administrator, the
successor trustee or successor securities administrator shall cause such notice
to be mailed at the expense of the Depositor.

            SECTION 9.09. Merger or Consolidation of Trustee or Securities
            Administrator.

            Any corporation or association into which the Trustee or the
Securities Administrator may be merged or converted or with which it may be
consolidated or any corporation or association resulting from any merger,
conversion or consolidation to which the Trustee or the Securities Administrator
shall be a party, or any corporation or association succeeding to the business
of the Trustee or the Securities Administrator shall be the successor of the
Trustee or the Securities Administrator hereunder, provided such corporation or
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 9.10. 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 REMIC I or property securing the same may at the time be located, the
Trustee 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

                                     -155-
<PAGE>

Trustee, or separate trustee or separate trustees, of all or any part of REMIC
I, and to vest in such Person or Persons, in such capacity, and for the benefit
of the Holders of the Certificates and MBIA, such title to REMIC I, or any part
thereof, and, subject to the other provisions of this Section 9.10, such powers,
duties, obligations, rights and trusts as the Trustee may consider necessary or
desirable. No co-trustee or separate trustee hereunder shall be required to meet
the terms of eligibility as a successor trustee under Section 9.06 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 9.10 all rights, powers, duties and obligations
conferred or imposed upon the Trustee shall be conferred or imposed upon and
exercised or performed by the Trustee and such separate trustee 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 by the Trustee (whether as
Trustee hereunder or as successor to a defaulting 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 REMIC I 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 of them. Every instrument appointing any
separate trustee or co-trustee shall refer to this Agreement and the conditions
of this Article IX. Each separate trustee and co-trustee, upon its acceptance of
the trust 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 or co-trustee.

            SECTION 9.11. Appointment of Office or Agency.

            The Certificates may be surrendered for registration of transfer or
exchange at the Securities Administrator's office located at Sixth and
Marquette, Minneapolis, Minnesota 55479, and presented for final distribution at
the Corporate Trust Office of the Securities Administrator where notices and
demands to or upon the Securities Administrator in respect of the Certificates
and this Agreement may be served.

            SECTION 9.12. Representations and Warranties.

                                     -156-
<PAGE>

            The Trustee hereby represents and warrants to the Master Servicer,
the Securities Administrator and the Depositor as applicable, as of the Closing
Date, that:

            (i) It is a national banking association duly organized, validly
      existing and in good standing under the laws of the United States of
      America.

            (ii) The execution and delivery of this Agreement by it, and the
      performance and compliance with the terms of this Agreement by it, will
      not violate its articles of association 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) It 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 other parties hereto, constitutes a valid, legal and
      binding obligation of it, enforceable against it in accordance with the
      terms hereof, subject to (A) applicable bankruptcy, insolvency,
      receivership, 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) It 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, in its good faith and reasonable judgment, is likely to affect
      materially and adversely either the ability of it to perform its
      obligations under this Agreement or its financial condition.

            (vi) No litigation is pending or, to the best of its knowledge,
      threatened against it, which would prohibit it from entering into this
      Agreement or, in its good faith reasonable judgment, is likely to
      materially and adversely affect either the ability of it to perform its
      obligations under this Agreement or its financial condition.

                                     -157-
<PAGE>

                                    ARTICLE X

                                   TERMINATION

            SECTION 10.01. Termination Upon Repurchase or Liquidation of All
            Mortgage Loans.

            (a) Subject to Section 10.02, the respective obligations and
responsibilities under this Agreement of the Depositor, the Servicer and the
Trustee (other than the obligations of the Master Servicer to the Trustee
pursuant to Section 9.05 and of the Servicer to make remittances to the
Securities Administrator and the Securities Administrator to make payments in
respect of the REMIC I Regular Interests, REMIC I Regular Interests or the
Classes of Certificates as hereinafter set forth) shall terminate upon payment
to the Certificateholders and the deposit of all amounts held by or on behalf of
the Trustee and required hereunder to be so paid or deposited on the
Distribution Date coinciding with or following the earlier to occur of (i) the
purchase by the Terminator (as defined below) of all Mortgage Loans and each REO
Property remaining in REMIC I and (ii) the final payment or other liquidation
(or any advance with respect thereto) of the last Mortgage Loan or REO Property
remaining in REMIC I; 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. The
purchase by the Terminator of all Mortgage Loans and each REO Property remaining
in REMIC I shall be at a price (the "Termination Price") equal to the sum of (i)
the greater of (A) the aggregate Purchase Price of all the Mortgage Loans
included in REMIC I, plus the appraised value of each REO Property, if any,
included in REMIC I, such appraisal to be conducted by an appraiser mutually
agreed upon by the Terminator and the Trustee in their reasonable discretion and
(B) the aggregate fair market value of all of the assets of REMIC I (as
determined by the Terminator and the Trustee, as of the close of business on the
third Business Day next preceding the date upon which notice of any such
termination is furnished to Certificateholders pursuant to the third paragraph
of this Section 9.01) plus (ii) any amounts due the Servicer and the Master
Servicer in respect of unpaid Servicing Fees, Master Servicing Fees and
outstanding P&I Advances and Servicing Advances plus (iii) all MBIA
Reimbursement Amounts due to MBIA.

            (b) The Class CE Certificateholder (so long as it is not an
Affiliate of the Seller) shall have the right (the party exercising such right,
the "Terminator"), to purchase all of the Mortgage Loans and each REO Property
remaining in REMIC I pursuant to clause (i) of the preceding paragraph no later
than the Determination Date in the month immediately preceding the Distribution
Date on which the Certificates will be retired; provided, however, that the
Terminator may elect to purchase all of the Mortgage Loans and each REO Property
remaining in REMIC I pursuant to clause (i) above only if the aggregate Stated
Principal Balance of the Mortgage Loans and each REO Property remaining in the
Trust Fund at the time of such election is reduced to less than 10% of the
aggregate Stated Principal Balance of the Mortgage Loans as of the Cut-off Date.
By acceptance of the Residual Certificates, the Holder of the Residual
Certificates agrees, in connection with any termination hereunder, to assign and
transfer any portion of the Termination Price in excess of par, and to the
extent received in respect of such termination, to pay any such amounts to the
Holders of the Class CE Certificates.

                                     -158-
<PAGE>

            (c) Notice of the liquidation of the Certificates shall be given
promptly by the Securities Administrator by letter to MBIA and the
Certificateholders mailed (a) in the event such notice is given in connection
with the purchase of the Mortgage Loans and each REO Property by the Terminator,
not earlier than the 15th day and not later than the 25th day of the month next
preceding the month of the final distribution on the Certificates 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 the Trust Fund will terminate and the final payment in respect
of the REMIC I Regular Interests, REMIC I Regular Interests or the Certificates
will be made upon presentation and surrender of the related Certificates at the
office of the Securities Administrator therein designated, (ii) the amount of
any such final payment, (iii) that no interest shall accrue in respect of the
REMIC I Regular Interests, REMIC I Regular Interests or Certificates from and
after the Interest Accrual Period relating to the final Distribution Date
therefor and (iv) 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 Securities Administrator. In the event
such notice is given in connection with the purchase of all of the Mortgage
Loans and each REO Property remaining in REMIC I by the Terminator, the
Terminator shall deliver to the Securities Administrator for deposit in the
Distribution Account not later than the Business Day prior to the Distribution
Date on which the final distribution on the Certificates an amount in
immediately available funds equal to the above-described Termination Price. The
Securities Administrator shall remit to the Servicer, the Master Servicer, the
Securities Administrator and the Custodian from such funds deposited in the
Distribution Account (i) any amounts which the Servicer would be permitted to
withdraw and retain from the Collection Account pursuant to Section 3.21 and
(ii) any other amounts otherwise payable by the Securities Administrator to the
Master Servicer, the Trustee, the Custodian and the Servicer from amounts on
deposit in the Distribution Account pursuant to the terms of this Agreement
prior to making any final distributions pursuant to Section 10.01(d) below. Upon
certification to the Securities Administrator by a Servicing Officer of the
making of such final deposit, the Trustee shall promptly release to the
Terminator the Mortgage Files for the remaining Mortgage Loans, and Trustee
shall execute all assignments, endorsements and other instruments necessary to
effectuate such transfer.

            (d) Upon presentation of the Certificates by the Certificateholders
on the final Distribution Date, the Securities Administrator shall distribute to
each Certificateholder so presenting and surrendering its Certificates the
amount otherwise distributable on such Distribution Date in accordance with
Section 5.01 in respect of the Certificates so presented and surrendered and
shall pay to MBIA on the final Distribution Date the amount of all outstanding
MBIA Reimbursement Amounts. Any funds not distributed to any Holder or Holders
of Certificates being retired 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 10.01 shall not have been surrendered for
cancellation within six months after the time specified in such notice, the
Securities Administrator 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 one year after the second notice all such Certificates shall not have
been surrendered for cancellation, the Securities Administrator shall, directly
or through an agent, mail a final notice to the remaining non-tendering
Certificateholders concerning surrender

                                     -159-
<PAGE>

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 funds. If within one year after the final notice any such
Certificates shall not have been surrendered for cancellation, the Securities
Administrator shall pay to the Depositor all such amounts, and all rights of
non-tendering Certificateholders in or to such amounts shall thereupon cease. No
interest shall accrue or be payable to any Certificateholder on any amount held
in trust by the Securities Administrator as a result of such Certificateholder's
failure to surrender its Certificate(s) on the final Distribution Date for final
payment thereof in accordance with this Section 10.01. Any such amounts held in
trust by the Securities Administrator shall be held uninvested in an Eligible
Account.

            SECTION 10.02. Additional Termination Requirements.

            (a) In the event that the Terminator purchases all the Mortgage
Loans and each REO Property or the final payment on or other liquidation of the
last Mortgage Loan or REO Property remaining in REMIC I pursuant to Section
10.01, the Trust Fund shall be terminated in accordance with the following
additional requirements:

                  (i) The Trustee shall specify the first day in the 90-day
      liquidation period in a statement attached to each Trust REMIC's final Tax
      Return pursuant to Treasury regulation Section 1.860F-1 and shall satisfy
      all requirements of a qualified liquidation under Section 860F of the Code
      and any regulations thereunder, as evidenced by an Opinion of Counsel
      obtained by and at the expense of the Terminator;

                  (ii) During such 90-day liquidation period and, at or prior to
      the time of making of the final payment on the Certificates, the Trustee
      shall sell all of the assets of REMIC I to the Terminator for cash; and

                  (iii) At the time of the making of the final payment on the
      Certificates, the Securities Administrator shall distribute or credit, or
      cause to be distributed or credited, to the Holders of the Residual
      Certificates all cash on hand in the Trust Fund (other than cash retained
      to meet claims), and the Trust Fund shall terminate at that time.

            (b) At the expense of the requesting Terminator (or, if the Trust
Fund is being terminated as a result of the occurrence of the event described in
clause (ii) of the first paragraph of Section 10.01, at the expense of the Trust
Fund), the Terminator shall prepare or cause to be prepared the documentation
required in connection with the adoption of a plan of liquidation of each Trust
REMIC pursuant to this Section 10.02.

            (c) By their acceptance of Certificates, the Holders thereof hereby
agree to authorize the Trustee to specify the 90-day liquidation period for each
Trust REMIC, which authorization shall be binding upon all successor
Certificateholders.

                                     -160-
<PAGE>

                                   ARTICLE XI

                                REMIC PROVISIONS

            SECTION 11.01. REMIC Administration.

            (a) The Trustee shall elect to treat each Trust REMIC as a REMIC
under the Code and, if necessary, under applicable state law. Each such election
will be made by the Securities Administrator on Form 1066 or other appropriate
federal tax or information return or any appropriate state return for the
taxable year ending on the last day of the calendar year in which the
Certificates are issued. For the purposes of the REMIC election in respect of
REMIC I, the REMIC I Regular Interests shall be designated as the Regular
Interests in REMIC I and the Class R-I Interest shall be designated as the
Residual Interests in REMIC I. The Class A Certificates, the Mezzanine
Certificates, the Class P Certificates and the Class CE Certificates shall be
designated as the Regular Interests in REMIC II and the Class R-II Interest
shall be designated as the Residual Interests in REMIC II. The Trustee shall not
permit the creation of any "interests" in each Trust REMIC (within the meaning
of Section 860G of the Code) other than the REMIC I Regular Interests and the
interests represented by the Certificates.

            (b) The Closing Date is hereby designated as the "Startup Day" of
each Trust REMIC within the meaning of Section 860G(a)(9) of the Code.

            (c) The Securities Administrator shall be reimbursed for any and all
expenses relating to any tax audit of the Trust Fund (including, but not limited
to, any professional fees or any administrative or judicial proceedings with
respect to each Trust REMIC that involve the Internal Revenue Service or state
tax authorities), including the expense of obtaining any tax related Opinion of
Counsel except as specified herein. The Securities Administrator, as agent for
each Trust REMIC's tax matters person shall (i) act on behalf of the Trust Fund
in relation to any tax matter or controversy involving any Trust REMIC 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. The holder of the largest Percentage Interest of each class of Residual
Certificates shall be designated, in the manner provided under Treasury
regulations section 1.860F-4(d) and Treasury regulations section
301.6231(a)(7)-1, as the tax matters person of the related REMIC created
hereunder. By their acceptance thereof, the holder of the largest Percentage
Interest of the Residual Certificates hereby agrees to irrevocably appoint the
Securities Administrator or an Affiliate as its agent to perform all of the
duties of the tax matters person for the Trust Fund.

            (d) The Securities Administrator shall prepare and file and the
Trustee shall sign all of the Tax Returns in respect of each REMIC created
hereunder. The expenses of preparing and filing such returns shall be borne by
the Securities Administrator without any right of reimbursement therefor.

            (e) The Securities Administrator shall perform on behalf of each
Trust REMIC all reporting and other tax compliance duties that are the
responsibility of such REMIC under the Code, the REMIC Provisions or other
compliance guidance issued by the Internal Revenue Service or any state or

                                     -161-
<PAGE>

local taxing authority. Among its other duties, as required by the Code, the
REMIC Provisions or other such compliance guidance, the Securities Administrator
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 upon
receipt of additional reasonable compensation, (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 each Trust REMIC. The
Depositor shall provide or cause to be provided to the Securities Administrator,
within ten (10) days after the Closing Date, all information or data that the
Securities Administrator 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) To the extent in the control of the Trustee or the Securities
Administrator, each such Person (i) shall take such action and shall cause each
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, (ii) 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 (A) endanger the status of each Trust
REMIC as a REMIC or (B) result in the imposition of a tax upon the Trust Fund
(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 such action or inaction is permitted under this Agreement or the Trustee
and the Securities Administrator have received an Opinion of Counsel, addressed
to the them (at the expense of the party seeking to take such action but in no
event at the expense of the Trustee or the Securities Administrator) to the
effect that the contemplated action will not, with respect to any Trust REMIC,
endanger such status or result in the imposition of such a tax, nor (iii) shall
the Securities Administrator 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; provided that the Securities
Administrator may conclusively rely on such Opinion of Counsel and shall incur
no liability for its action or failure to act in accordance with such Opinion of
Counsel. In addition, prior to taking any action with respect to any Trust REMIC
or the respective assets of each, or causing any Trust REMIC to take any action,
which is not contemplated under the terms of this Agreement, the Securities
Administrator 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 any Trust REMIC, and the Securities Administrator shall not take any
such action or cause any Trust REMIC 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 home 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.

            (g) In the event that any tax is imposed on "prohibited
transactions" of any REMIC created hereunder as defined in Section 860F(a)(2) of
the Code, on the "net income from foreclosure property" of such REMIC as defined
in Section 860G(c) of the Code, on any contributions to any such

                                     -162-
<PAGE>

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
11.03, if such tax arises out of or results from a breach by the Trustee of any
of its obligations under this Article XI, (ii) to the Securities Administrator
pursuant to Section 11.03, if such tax arises out of or results from a breach by
the Securities Administrator of any of its obligations under this Article XI,
(iii) to the Master Servicer pursuant to Section 11.03, if such tax arises out
of or results from a breach by the Master Servicer of any of its obligations
under Article IV or under this Article XI, (iv) to the Servicer pursuant to
Section 11.03, if such tax arises out of or results from a breach by the
Servicer of any of its obligations under Article III or under this Article XI,
or (v) in all other cases, against amounts on deposit in the Distribution
Account and shall be paid by withdrawal therefrom.

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

            (i) Following the Startup Day, neither the Securities Administrator
nor the Trustee shall accept any contributions of assets to any Trust REMIC
other than in connection with any Qualified Substitute Mortgage Loan delivered
in accordance with Section 2.03 unless it shall have received an Opinion of
Counsel to the effect that the inclusion of such assets in the Trust Fund will
not cause the related REMIC to fail to qualify as a REMIC at any time that any
Certificates are outstanding or subject such REMIC to any tax under the REMIC
Provisions or other applicable provisions of federal, state and local law or
ordinances.

            (j) Neither the Trustee nor the Securities Administrator shall
knowingly enter into any arrangement by which any Trust REMIC will receive a fee
or other compensation for services nor permit either REMIC 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.

            (k) The Securities Administrator shall apply for an employer
identification number with the Internal Revenue Service via a Form SS-4 or other
comparable method for each REMIC. In connection with the foregoing, the
Securities Administrator shall provide the name and address of the person who
can be contacted to obtain information required to be reported to the holders of
Regular Interests in each REMIC as required by IRS Form 8811.

            SECTION 11.02. Prohibited Transactions and Activities.

            None of the Depositor, the Servicer, the Securities Administrator,
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 REMIC I, (iii) the termination of REMIC I pursuant to Article X of this
Agreement, (iv) a substitution pursuant to Article II of this Agreement or (v) a
purchase of Mortgage Loans pursuant to Article II of this Agreement), nor
acquire any assets for any Trust REMIC (other than REO Property acquired in
respect of a defaulted Mortgage Loan), nor sell or dispose of any investments in
the Collection Account or the Distribution Account for gain, nor

                                     -163-
<PAGE>

accept any contributions to any Trust 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 and 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 any Trust REMIC as a REMIC or (b)
cause any Trust REMIC to be subject to a tax on "prohibited transactions" or
"contributions" pursuant to the REMIC Provisions.

            SECTION 11.03. Indemnification.

            (a) The Trustee agrees to be liable for any taxes and costs incurred
by the Trust Fund, the Depositor, the Master Servicer, the Securities
Administrator or the Servicer including, without limitation, any reasonable
attorneys fees imposed on or incurred by the Trust Fund, the Depositor, the
Master Servicer, the Securities Administrator or the Servicer as a result of the
Trustee's failure to perform its covenants set forth in this Article XI in
accordance with the standard of care of the Trustee set forth in this Agreement.

            (b) The Servicer agrees to indemnify the Trust Fund, the Depositor,
the Master Servicer, the Securities Administrator and the Trustee for any taxes
and costs including any reasonable attorneys' fees imposed on or incurred by the
Trust Fund, the Depositor, the Master Servicer, the Securities Administrator or
the Trustee, as a result of the Servicer's failure to perform its covenants set
forth in Article III in accordance with the standard of care of the Servicer set
forth in this Agreement.

            (c) The Master Servicer agrees to indemnify the Trust Fund, the
Depositor, the Servicer and the Trustee for any taxes and costs including any
reasonable attorneys' fees imposed on or incurred by the Trust Fund, the
Depositor, the Servicer or the Trustee, as a result of the Master Servicer's
failure to perform its covenants set forth in Article IV in accordance with the
standard of care of the Master Servicer set forth in this Agreement.

            (d) The Securities Administrator agrees to be liable for any taxes
and costs incurred by the Trust Fund, the Depositor or the Trustee including any
reasonable attorneys fees imposed on or incurred by the Trust Fund, the
Depositor or the Trustee as a result of the Securities Administrator's failure
to perform its covenants set forth in this Article XI in accordance with the
standard of care of the Securities Administrator set forth in this Agreement.

                                     -164-
<PAGE>

                                   ARTICLE XII

                            MISCELLANEOUS PROVISIONS

            SECTION 12.01. Amendment.

            This Agreement may be amended from time to time by the Depositor,
the Servicer, the Master Servicer, the Securities Administrator and the Trustee
with the consent of MBIA, but without the consent of any of the
Certificateholders, (i) to cure any ambiguity or defect, (ii) to correct, modify
or supplement any provisions herein (including to give effect to the
expectations of Certificateholders), or (iii) to make any other provisions with
respect to matters or questions arising under this Agreement which shall not be
inconsistent with the provisions of this Agreement, provided that such action
shall not, as evidenced by an Opinion of Counsel delivered to the Trustee,
adversely affect in any material respect the interests of any Certificateholder
(determined without regard to the Class A-2B Policy); provided that any such
amendment shall be deemed not to adversely affect in any material respect the
interests of the Certificateholders (determined without regard to the Class A-2B
Policy) and no such Opinion of Counsel shall be required if the Person
requesting such amendment obtains a letter from each Rating Agency stating that
such amendment would not result in the downgrading or withdrawal of the
respective ratings then assigned to the Certificates (determined without regard
to the Class A-2B Policy). No amendment shall be deemed to adversely affect in
any material respect the interests of any Certificateholder who shall have
consented thereto, and no Opinion of Counsel shall be required to address the
effect of any such amendment on any such consenting Certificateholder.

            This Agreement may also be amended from time to time by the
Depositor, the Servicer, the Master Servicer, the Securities Administrator and
the Trustee with the consent of MBIA and the Holders of Certificates entitled to
at least 66% 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; 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 without the consent of the Holder of such
Certificate, (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% of the Voting Rights allocated to such Class, or (iii) modify the
consents required by the immediately preceding clauses (i) and (ii) 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 12.01, Certificates registered in the name of
the Depositor or the Servicer or any Affiliate thereof shall be entitled to
Voting Rights with respect to matters affecting such Certificates. Without
limiting the generality of the foregoing, any amendment to this Agreement
required in connection with the compliance with or the clarification of any
reporting obligations described in Section 5.06 hereof shall not require the
consent of any Certificateholder or MBIA and without the need for any Opinion of
Counsel or Rating Agency confirmation.

                                     -165-
<PAGE>

            Notwithstanding any contrary provision of this Agreement, the
Trustee shall not consent to any amendment to this Agreement unless it and MBIA
shall have first received an Opinion of Counsel to the effect that such
amendment is permitted hereunder and will not result in the imposition of any
tax on any Trust REMIC pursuant to the REMIC Provisions or cause any Trust REMIC
to fail to qualify as a REMIC at any time that any Certificates are outstanding
and that such amendment is authorized or permitted by this Agreement.

            Promptly after the execution of any such amendment the Trustee shall
furnish a copy of such amendment to each Certificateholder and MBIA.

            It shall not be necessary for the consent of Certificateholders
under this Section 12.01 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.

            The cost of any Opinion of Counsel to be delivered pursuant to this
Section 12.01 shall be borne by the Person seeking the related amendment, but in
no event shall such Opinion of Counsel 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 12.02. 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
Depositor 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.

            SECTION 12.03. 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.

                                     -166-
<PAGE>

            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 any of the
Certificates, be construed so as to constitute the Certificateholders from time
to time as partners or members of an association; nor shall any
Certificateholder be under any liability to any third person by reason of any
action taken by the parties to this Agreement pursuant to any provision hereof.

            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 written notice of default and of
the continuance thereof, as hereinbefore provided, and unless also the Holders
of Certificates entitled to at least 25% 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 15 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 shall have any right in any manner whatsoever 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 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.

            SECTION 12.04. Governing Law.

            This Agreement shall be construed in accordance with the laws of the
State of New York and the obligations, rights and remedies of the parties
hereunder shall be determined in accordance with such laws without regard to
conflicts of laws principles thereof.

            SECTION 12.05. Notices.

            All directions, demands and notices hereunder shall be in writing
and shall be deemed to have been duly given when received if sent by facsimile,
receipt confirmed, if personally delivered at or mailed by first class mail,
postage prepaid, or by express delivery service or delivered in any other manner
specified herein, to (a) in the case of the Depositor, ACE Securities Corp.,
AMACAR GROUP, 6525 Morrison Boulevard, Suite 318, Charlotte, North Carolina
28211, Attention: Juliana Johnson (telecopy number:(704) 365-1362), or such
other address or telecopy number as may hereafter be furnished to the Servicer,
the Master Servicer, the Securities Administrator and the Trustee in writing by
the Depositor, (b) in the case of the Servicer, The Provident Bank, One East
Fourth Street, Mail Drop 176D, Attention: Randy L. Decker (telecopy number:
(800) 838-9727)), or such other address or telecopy number as may hereafter be
furnished to the Trustee, the Master Servicer, the Securities Administrator and
the Depositor

                                     -167-
<PAGE>

in writing by the Servicer, (c) in the case of the Master Servicer and the
Securities Administrator, P.O. Box 98, Columbia, Maryland 21046 and for
overnight delivery to 9062 Old Annapolis Road, Columbia, Maryland 21045,
Attention: Ace Securities Corp., 2003-HS1 (telecopy number: (410) 715-2380), or
such other address or telecopy number as may hereafter be furnished to the
Trustee, the Depositor and the Servicer in writing by the Master Servicer or the
Securities Administrator, (d) in the case of MBIA, MBIA Insurance Corporation,
113 King Street, Armonk, New York 10504, Attention: Insured Portfolio
Management--Structured Finance (ACE 2003-HS1), or such other address as may be
hereafter furnished to the Trustee and the Securities Administrator by MBIA in
writing and (e) in the case of the Trustee, at the Corporate Trust Office or
such other address or telecopy number as the Trustee may hereafter be furnish to
the Servicer, the Master Servicer, the Securities Administrator and the
Depositor in writing by the Trustee. Any notice required or permitted to be
given 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 when mailed, whether or not the
Certificateholder receives such notice. A copy of any notice required to be
telecopied hereunder also shall be mailed to the appropriate party in the manner
set forth above.

            SECTION 12.06. 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 or of the Certificates or the rights of the Holders thereof.

            SECTION 12.07. Notice to Rating Agencies and MBIA.

            The Trustee shall use its best efforts promptly to provide notice to
the Rating Agencies and MBIA with respect to each of the following of which a
Responsible Officer has actual knowledge:

            1.    Any material change or amendment to this Agreement;

            2.    The occurrence of any Servicer Event of Default or Master
                  Servicer Event of Default that has not been cured or waived;

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

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

                                     -168-
<PAGE>

            5.    The final payment to the Holders of any Class of Certificates;

            6.    Any change in the location of the Distribution Account; and

            7.    Any event that would result in the inability of the Trustee as
                  successor Servicer to make advances regarding delinquent
                  Mortgage Loans.

            In addition, the Securities Administrator shall promptly make
available to each Rating Agency copies of each report to Certificateholders
described in Section 5.02.

            The Servicer shall make available to each Rating Agency copies of
the following:

            1.    Each annual statement as to compliance described in Section
                  3.17;

            2.    Each annual independent public accountants' servicing report
                  described in Section 3.18; and

            3.    Any change in the location of the Collection Account.

            Any such notice pursuant to this Section 12.07 shall be in writing
and shall be deemed to have been duly given if personally delivered at or mailed
by first class mail, postage prepaid, or by express delivery service to Standard
& Poor's, a division of the McGraw-Hill Companies, Inc., 55 Water Street, New
York, New York 10041, to Moody's Investors Service, Inc., 99 Church Street, New
York, New York 10007 and to Fitch Ratings, 1 State Street Plaza, New York, New
York 10004 or such other addresses as the Rating Agencies may designate in
writing to the parties hereto.

            SECTION 12.08. Article and Section References.

            All article and section references used in this Agreement, unless
otherwise provided, are to articles and sections in this Agreement.

            SECTION 12.09. Grant of Security Interest.

            It is the express intent of the parties hereto that the conveyance
of the Mortgage Loans by the Depositor to the Trustee, on behalf of the Trust
and for the benefit of the Certificateholders, be, and

                                     -169-
<PAGE>

be construed as, a sale of the Mortgage Loans by the Depositor and not a pledge
of the Mortgage Loans to secure a debt or other obligation of the Depositor.
However, in the event that, notwithstanding the aforementioned intent of the
parties, the Mortgage Loans are held to be property of the Depositor, then, (a)
it is the express intent of the parties that such conveyance be deemed a pledge
of the Mortgage Loans by the Depositor to the Trustee, on behalf of the Trust
and for the benefit of the Certificateholders, to secure a debt or other
obligation of the Depositor and (b)(1) this Agreement shall also be deemed to be
a security agreement within the meaning of Articles 8 and 9 of the Uniform
Commercial Code as in effect from time to time in the State of New York; (2) the
conveyance provided for in Section 2.01 shall be deemed to be a grant by the
Depositor to the Trustee, on behalf of the Trust and for the benefit of the
Certificateholders, of a security interest in all of the Depositor's right,
title and interest in and to the Mortgage Loans and all amounts payable to the
holders of the Mortgage Loans in accordance with the terms thereof and all
proceeds of the conversion, voluntary or involuntary, of the foregoing into
cash, instruments, securities or other property, including without limitation
all amounts, other than investment earnings, from time to time held or invested
in the Collection Account and the Distribution Account, whether in the form of
cash, instruments, securities or other property; (3) the obligations secured by
such security agreement shall be deemed to be all of the Depositor's obligations
under this Agreement, including the obligation to provide to the
Certificateholders the benefits of this Agreement relating to the Mortgage Loans
and the Trust Fund; and (4) 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.
Accordingly, the Depositor hereby grants to the Trustee, on behalf of the Trust
and for the benefit of the Certificateholders, a security interest in the
Mortgage Loans and all other property described in clause (2) of the preceding
sentence, for the purpose of securing to the Trustee the performance by the
Depositor of the obligations described in clause (3) of the preceding sentence.
Notwithstanding the foregoing, the parties hereto intend the conveyance pursuant
to Section 2.01 to be a true, absolute and unconditional sale of the Mortgage
Loans and assets constituting the Trust Fund by the Depositor to the Trustee, on
behalf of the Trust and for the benefit of the Certificateholders.

            SECTION 12.10. Survival of Indemnification.

            Any and all indemnities to be provided by any party to this
Agreement shall survive the termination and resignation of any party hereto and
the termination of this Agreement.

            SECTION 12.11. MBIA's Rights.

            (a) All notices, statements, reports, certificates, lists or
opinions required by this Agreement to be sent to the parties hereto, the Rating
Agencies or the Class A-2B Certificateholders shall also be sent at such time to
MBIA at the notice address set forth in Section 12.05.

                                     -170-
<PAGE>

            (b) MBIA shall be an express third party beneficiary of this
Agreement for the purpose of enforcing the provisions hereof to the extent of
MBIA's rights explicitly specified herein as if a party hereto.

            (c) All references herein to the ratings assigned to the
Certificates and to the interests of any Certificateholders shall be without
regard to the Class A-2B Policy.

                                     -171-
<PAGE>

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

                                ACE SECURITIES CORP.,
                                as Depositor

                                By:
                                   --------------------------------------------

                                Name:

                                Title:

                                By:
                                   --------------------------------------------
                                Name:

                                Title:

                                BANK ONE, NATIONAL ASSOCIATION,
                                not in its individual capacity but solely as
                                Trustee

                                By:
                                   --------------------------------------------

                                Name:

                                Title:

                                WELLS FARGO BANK MINNESOTA, NATIONAL
                                ASSOCIATION
                                as Master Servicer and Securities Administrator

                                By:
                                   --------------------------------------------

                                Name:

                                Title:

<PAGE>

                                THE PROVIDENT BANK,
                                as Servicer

                                By:
                                   --------------------------------------------

                                Name:

                                Title:

                                For purposes of Sections 7.08, 7.09 and 7.10:

                                THE MURRAYHILL COMPANY

                                By:
                                   --------------------------------------------

                                Name:

                                Title:

<PAGE>

STATE OF           )
                   ) ss.:
COUNTY OF          )

            On the ___ day of August 2003, before me, a notary public in and for
said State, personally appeared _____________________ known to me to be a
_____________________ of ACE Securities Corp., one of the corporations 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.

                                                --------------------------------
                                                          Notary Public

[Notarial Seal]                                 My commission expires

<PAGE>

STATE OF           )
                   ) ss.:
COUNTY OF          )

            On the __ day of August 2003, before me, a notary public in and for
said State, personally appeared ___________________________ known to me to be a
____________________ of ACE Securities Corp., one of the corporations 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.

                                                --------------------------------
                                                          Notary Public

[Notarial Seal]                                 My commission expires

<PAGE>

STATE OF           )
                   ) ss.:
COUNTY OF          )

            On the ___ day of August, 2003, before me, a notary public in and
for said State, personally appeared _______________ known to me to be a
_______________ of ________________, The Provident Bank, one of the corporations
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.

                                                --------------------------------
                                                          Notary Public

[Notarial Seal]                                 My commission expires

<PAGE>

STATE OF           )
                   ) ss.:
COUNTY OF          )

            On the ___ day of August, 2003, before me, a notary public in and
for said State, personally appeared ____________________, known to me to be a
__________________ of Wells Fargo Bank Minnesota, National Association, one of
the corporations 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.

                                                --------------------------------
                                                          Notary Public

[Notarial Seal]

<PAGE>

STATE OF           )
                   ) ss.:
COUNTY OF          )

            On the ___ day of August, 2003, before me, a notary public in and
for said State, personally appeared ____________________, known to me to be a
__________________ of Bank One, National Association, one of the corporations
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.

                                                --------------------------------
                                                          Notary Public

[Notarial Seal]

<PAGE>

STATE OF           )
                   ) ss.:
COUNTY OF          )

            On the ___ day of August, 2003, before me, a notary public in and
for said State, personally appeared ____________________, known to me to be a
__________________ of The Murrayhill Company, one of the corporations 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.

                                                --------------------------------
                                                          Notary Public

[Notarial Seal]
<PAGE>

                                                                     EXHIBIT A-1

                     FORM OF CLASS A-[1][2A][2B] 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").

      UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
      THE DEPOSITORY TRUST COMPANY TO THE DEPOSITOR OR ITS AGENT FOR
      REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED
      IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY
      AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY
      PAYMENT IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF
      FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE
      REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

<TABLE>
<S>                                              <C>
Series 2003-HS1, Class A-[1][2A][2B]             Aggregate Certificate Principal Balance of the
                                                 Class A-[1][2A][2B] Certificates as of the Issue

Pass-Through Rate: Variable                      Date:
                                                 $
Date of Pooling and Servicing Agreement and      Denomination: $
Cut-off Date: August 1, 2003
                                                 Master Servicer: Wells Fargo Bank Minnesota,
                                                 National Association
First Distribution Date:
September 25, 2003                               Trustee: Bank One National Association

No.__                                            Issue Date: August 19, 2003

                                                 CUSIP:________________
</TABLE>

      DISTRIBUTIONS IN REDUCTION OF THE CERTIFICATE PRINCIPAL BALANCE OF THIS
      CERTIFICATE MAY BE MADE MONTHLY AS SET FORTH HEREIN. ACCORDINGLY, THE
      OUTSTANDING CERTIFICATE PRINCIPAL BALANCE HEREOF AT ANY TIME MAY BE LESS
      THAN THE AMOUNT SHOWN ABOVE AS THE DENOMINATION OF THIS CERTIFICATE.

<PAGE>

          ACE SECURITIES CORP. HOME EQUITY LOAN TRUST, SERIES 2003-HS1
                      ASSET BACKED PASS-THROUGH CERTIFICATE

evidencing a beneficial ownership interest in a Trust Fund (the "Trust Fund")
consisting primarily of a pool of conventional one- to four-family, fixed and
adjustable-rate first and second lien mortgage loans (the "Mortgage Loans")
formed and sold by

                              ACE SECURITIES CORP.

      THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN ACE
      SECURITIES CORP., THE MASTER SERVICER, THE SECURITIES ADMINISTRATOR, THE
      SERVICER, THE TRUSTEE OR ANY OF THEIR RESPECTIVE AFFILIATES. NEITHER THIS
      CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE GUARANTEED BY ANY AGENCY
      OR INSTRUMENTALITY OF THE UNITED STATES.

            This certifies that ________________ is the registered owner of a
Percentage Interest (obtained by dividing the denomination of this Certificate
by the aggregate Certificate Principal Balance of the Class A-[1][2A][2B]
Certificates as of the Issue Date) in that certain beneficial ownership interest
evidenced by all the Class A-[1][2A][B] Certificates in REMIC II created
pursuant to a Pooling and Servicing Agreement, dated as specified above (the
"Agreement"), among ACE Securities Corp., as depositor (hereinafter called the
"Depositor", which term includes any successor entity under the Agreement),
Wells Fargo Bank Minnesota, National Association as master servicer (the "Master
Servicer") and securities administrator (the "Securities Administrator"), The
Provident Bank as servicer (the "Servicer") and Bank One National Association,
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, distributions 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 such 25th day (a "Distribution Date"),
commencing on the First Distribution Date specified above, to the Person in
whose name this Certificate is registered on the Business Day immediately
preceding such Distribution Date (the "Record Date"), in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the amount
required to be distributed to the Holders of Class A- [1][2] Certificates on
such Distribution Date pursuant to the Agreement.

            All distributions to the Holder of this Certificate under the
Agreement will be made or caused to be made by the Securities Administrator by
wire transfer in immediately available funds to the account of the Person
entitled thereto if such Person shall have so notified the Securities
Administrator in writing at least five Business Days prior to the Record Date
immediately prior to such Distribution Date and is the registered owner of Class
A-[1][2A][2B] Certificates the aggregate initial Certificate Principal

                                     A-1-2
<PAGE>

Balance of which is in excess of the lesser of (i) $5,000,000 or (ii) two-thirds
of the aggregate initial Certificate Principal Balance of the Class
A-[1][2A][2B] Certificates, or otherwise by check mailed by first class mail 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 by the Securities
Administrator of the pendency of such distribution and only upon presentation
and surrender of this Certificate at the office or agency appointed by the
Securities Administrator for that purpose as provided in the Agreement.

            The Pass-Through Rate applicable to the calculation of interest
payable with respect to this Certificate on any Distribution Date shall equal a
rate per annum equal to the lesser of (i) One-Month LIBOR plus [_____]%, in the
case of each Distribution Date through and including the Distribution Date on
which the aggregate principal balance of the Mortgage Loans (and properties
acquired in respect thereof) remaining in the Trust Fund is reduced to less than
10% of the aggregate principal balance of the Mortgage Loans as of the Cut-off
Date, or One-Month LIBOR plus [_____]% per annum, in the case of any
Distribution Date thereafter and (ii) the applicable Net WAC Pass-Through Rate
for such Distribution Date.

            This Certificate is one of a duly authorized issue of Certificates
designated as Asset Backed Pass-Through Certificates of the Series specified on
the face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof equal to the
denomination specified on the face hereof divided by the aggregate Certificate
Principal Balance of the Class of Certificates specified on the face hereof.

            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. As provided in the
Agreement, withdrawals from the Collection Account and the Distribution Account
may be made from time to time for purposes other than distributions to
Certificateholders, such purposes including reimbursement of advances made, or
certain expenses incurred, with respect to the Mortgage Loans.

            The Agreement permits, with certain exceptions therein provided, the
amendment thereof and the modification of the rights and obligations of the
Depositor, the Master Servicer, the Trustee, the Securities Administrator, the
Servicer and the rights of the Certificateholders under the Agreement at any
time by the Depositor, the Master Servicer, the Trustee, the Securities
Administrator and the Servicer with the consent of the Holders of Certificates
entitled to at least 66% of the Voting Rights. 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 this Certificate. The Agreement also permits the
amendment thereof, in certain limited circumstances, without the consent of the
Holders of any of the 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 Securities Administrator as
provided in the

                                     A-1-3
<PAGE>

Agreement, duly endorsed by, or accompanied by an assignment in the form below
or other written instrument of transfer in form satisfactory to the Securities
Administrator duly executed by, the Holder hereof or such Holders attorney duly
authorized in writing, and thereupon one or more new Certificates of the same
Class in authorized denominations evidencing the same aggregate Percentage
Interest will be issued to the designated transferee or transferees.

            The Certificates are issuable in fully registered form only without
coupons in Classes and denominations representing Percentage Interests specified
in the Agreement. As provided in the Agreement and subject to certain
limitations therein set forth, the Certificates are exchangeable for new
Certificates of the same Class in authorized denominations evidencing the same
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 of Certificates, but the Securities Administrator may require
payment of a sum sufficient to cover any tax or other governmental charge that
may be imposed in connection with any transfer or exchange of Certificates.

            The Depositor, the Master Servicer, the Trustee, the Securities
Administrator, the Servicer and any agent of the Depositor, the Master Servicer,
the Trustee, the Securities Administrator or the Servicer may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and none of the Depositor, the Master Servicer, the Trustee, the
Securities Administrator, the Servicer nor any such agent shall be affected by
notice to the contrary.

            The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment to the Certificateholders of all amounts
held by the Securities Administrator and required to be paid to them pursuant to
the Agreement following the earlier of (i) the final payment or other
liquidation (or any advance with respect thereto) of the last Mortgage Loan
remaining in REMIC I and (ii) the purchase by the party designated in the
Agreement at a price determined as provided in the Agreement from REMIC I of all
the Mortgage Loans and all property acquired in respect of such Mortgage Loans.
The Agreement permits, but does not require, the party designated in the
Agreement to purchase from REMIC I all the Mortgage Loans and all property
acquired in respect of any Mortgage Loan at a price determined as provided in
the Agreement. The exercise of such right will effect early retirement of the
Certificates; however, such right to purchase is subject to the aggregate Stated
Principal Balance of the Mortgage Loans at the time of purchase being less than
10% of the aggregate principal balance of the Mortgage Loans as of the Cut-off
Date.

            The recitals contained herein shall be taken as statements of the
Depositor and neither the Trustee nor the Securities Administrator assumes any
responsibility for their correctness.

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

                                     A-1-4
<PAGE>

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

Dated: August 19, 2003

                                            WELLS FARGO BANK MINNESOTA, NATIONAL
                                            ASSOCIATION
                                            as Securities Administrator

                                            By:_________________________________
                                                      Authorized Officer

                          CERTIFICATE OF AUTHENTICATION

            This is one of the Class A-[1][2A][B] Certificates referred to in
the within-mentioned Agreement.

                                            WELLS FARGO BANK MINNESOTA, NATIONAL
                                            ASSOCIATION
                                            as Securities Administrator

                                            By:_________________________________
                                                       Authorized Signatory

<PAGE>

                                  ABBREVIATIONS

            The following abbreviations, when used in the inscription on the
face of this instrument, shall be construed as though they were written out in
full according to applicable laws or regulations:

TEN COM  -  as tenants in common         UNIF GIFT MIN ACT -     Custodian
                                                                 ----------
                                                               (Cust) (Minor)
                                                             under Uniform Gifts
                                                                to Minors Act
TEN ENT  -  as tenants by the entireties

JT TEN   -  as joint tenants with right               _______________
            if survivorship and not as                (State)
            tenants in common

     Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT

            FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee)

a Percentage Interest equal to ____% evidenced by the within Asset Backed
Pass-Through Certificate and hereby authorize(s) the registration of transfer of
such interest to assignee on the Certificate Register of the Trust Fund.

            I (we) further direct the Trustee or the Securities Administrator to
issue a new Certificate of a like Percentage Interest 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

<PAGE>

                            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 A-2

                 FORM OF CLASS M-[1][2][3][4][5][6] 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").

      UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
      THE DEPOSITORY TRUST COMPANY TO THE DEPOSITOR OR ITS AGENT FOR
      REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED
      IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY
      AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY
      PAYMENT IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF
      FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE
      REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

      THIS CERTIFICATE IS SUBORDINATE TO THE CLASS A CERTIFICATES [,/AND] CLASS
      M-1 CERTIFICATES [,/AND] CLASS M-2 CERTIFICATES[,/AND] CLASS M-3
      CERTIFICATES [,/AND] CLASS M-4 CERTIFICATES [,/AND] CLASS M-5
      CERTIFICATES] TO THE EXTENT DESCRIBED IN THE AGREEMENT REFERRED TO HEREIN.

      ANY TRANSFEREE OF THIS CERTIFICATE SHALL BE DEEMED TO MAKE THE
      REPRESENTATIONS SET FORTH IN SECTION 6.02(c) OF THE AGREEMENT REFERRED TO
      HEREIN.

<PAGE>

<TABLE>
<S>                                            <C>
Series 2003-HS1, Class M-[1][2][3][4][5][6]    Aggregate Certificate Principal Balance of the
                                               Class M-[1][2][3][4][5][6] Certificates as of the
Pass-Through Rate: Variable                    Issue Date: $______________

Date of Pooling and Servicing Agreement and    Denomination: $______________
Cut-off Date: August 1, 2003
                                               Master Servicer: Wells Fargo Bank Minnesota,
                                               National Association
First Distribution Date:
September 25, 2003                             Trustee: Bank One National Association

No.___                                         Issue Date: August 19, 2003

                                               CUSIP:_________________
</TABLE>

      DISTRIBUTIONS IN REDUCTION OF THE CERTIFICATE PRINCIPAL BALANCE OF THIS
      CERTIFICATE MAY BE MADE MONTHLY AS SET FORTH HEREIN. ACCORDINGLY, THE
      OUTSTANDING CERTIFICATE PRINCIPAL BALANCE HEREOF AT ANY TIME MAY BE LESS
      THAN THE AMOUNT SHOWN ABOVE AS THE DENOMINATION OF THIS CERTIFICATE.

                                     A-2-2
<PAGE>

          ACE SECURITIES CORP. HOME EQUITY LOAN TRUST, SERIES 2003-HS1
                      ASSET BACKED PASS-THROUGH CERTIFICATE

evidencing a beneficial ownership interest in a Trust Fund (the "Trust Fund")
consisting primarily of a pool of conventional one- to four-family, fixed and
adjustable-rate first and second lien mortgage loans (the "Mortgage Loans")
formed and sold by

                              ACE SECURITIES CORP.

      THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN ACE
      SECURITIES CORP., THE MASTER SERVICER, THE SECURITIES ADMINISTRATOR, THE
      SERVICER, THE TRUSTEE OR ANY OF THEIR RESPECTIVE AFFILIATES. NEITHER THIS
      CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE GUARANTEED BY ANY AGENCY
      OR INSTRUMENTALITY OF THE UNITED STATES.

            This certifies that _____________________ is the registered owner of
a Percentage Interest (obtained by dividing the denomination of this Certificate
by the aggregate Certificate Principal Balance of the Class M-[1][2][3][4][5][6]
Certificates as of the Issue Date) in that certain beneficial ownership interest
evidenced by all the Class M-[1][2][3][4][5][6] Certificates in REMIC II created
pursuant to a Pooling and Servicing Agreement, dated as specified above (the
"Agreement"), among ACE Securities Corp., as depositor (hereinafter called the
"Depositor", which term includes any successor entity under the Agreement),
Wells Fargo Bank Minnesota, National Association as master servicer (the "Master
Servicer") and securities administrator (the "Securities Administrator"), The
Provident Bank as servicer (the "Servicer") and Bank One National Association,
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, distributions 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 such 25th day (a "Distribution Date"),
commencing on the First Distribution Date specified above, to the Person in
whose name this Certificate is registered on the Business Day immediately
preceding such Distribution Date (the "Record Date"), in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the amount
required to be distributed to the Holders of Class M-[1][2][3][4][5][6]
Certificates on such Distribution Date pursuant to the Agreement.

            All distributions to the Holder of this Certificate under the
Agreement will be made or caused to be made by the Securities Administrator by
wire transfer in immediately available funds to the account of the Person
entitled thereto if such Person shall have so notified the Securities
Administrator in writing at least five Business Days prior to the Record Date
immediately prior to such Distribution Date and is the registered owner of Class
M-[1][2][3][4][5][6] Certificates the aggregate initial Certificate Principal

                                     A-2-3
<PAGE>

Balance of which is in excess of the lesser of (i) $5,000,000 or (ii) two-thirds
of the aggregate initial Certificate Principal Balance of the Class
M-[1][2][3][4][5][6] Certificates, or otherwise by check mailed by first class
mail 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 by the Securities
Administrator of the pendency of such distribution and only upon presentation
and surrender of this Certificate at the office or agency appointed by the
Securities Administrator for that purpose as provided in the Agreement.

            The Pass-Through Rate applicable to the calculation of interest
payable with respect to this Certificate on any Distribution Date shall equal a
rate per annum equal to the lesser of (i) One-Month LIBOR plus ____%, in the
case of each Distribution Date through and including the Distribution Date on
which the aggregate principal balance of the Mortgage Loans (and properties
acquired in respect thereof) remaining in the Trust Fund is reduced to less than
10% of the aggregate principal balance of the Mortgage Loans as of the Cut-off
Date, or One-Month LIBOR plus ____ % per annum, in the case of any Distribution
Date thereafter and (ii) the applicable Net WAC Pass-Through Rate for such
Distribution Date.

            This Certificate is one of a duly authorized issue of Certificates
designated as Asset Backed Pass-Through Certificates of the Series specified on
the face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof equal to the
denomination specified on the face hereof divided by the aggregate Certificate
Principal Balance of the Class of Certificates specified on the face hereof.

            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. As provided in the
Agreement, withdrawals from the Collection Account and the Distribution Account
may be made from time to time for purposes other than distributions to
Certificateholders, such purposes including reimbursement of advances made, or
certain expenses incurred, with respect to the Mortgage Loans.

            The Agreement permits, with certain exceptions therein provided, the
amendment thereof and the modification of the rights and obligations of the
Depositor, the Master Servicer, the Trustee, the Securities Administrator, the
Servicer and the rights of the Certificateholders under the Agreement at any
time by the Depositor, the Master Servicer, the Trustee, the Securities
Administrator and the Servicer with the consent of the Holders of Certificates
entitled to at least 66% of the Voting Rights. 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 this Certificate. The Agreement also permits the
amendment thereof, in certain limited circumstances, without the consent of the
Holders of any of the 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 Securities Administrator as
provided in the

                                     A-2-4
<PAGE>

Agreement, duly endorsed by, or accompanied by an assignment in the form below
or other written instrument of transfer in form satisfactory to the Securities
Administrator duly executed by, the Holder hereof or such Holder's attorney duly
authorized in writing, and thereupon one or more new Certificates of the same
Class in authorized denominations evidencing the same aggregate Percentage
Interest will be issued to the designated transferee or transferees.

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

            Any transferee of this Certificate shall be deemed to make the
representations set forth in Section 6.02(c) of the Agreement.

            No service charge will be made for any such registration of transfer
or exchange of Certificates, but the Securities Administrator may require
payment of a sum sufficient to cover any tax or other governmental charge that
may be imposed in connection with any transfer or exchange of Certificates.

            The Depositor, the Master Servicer, the Trustee, the Securities
Administrator, the Servicer and any agent of the Depositor, the Master Servicer,
the Trustee, the Securities Administrator or the Servicer may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and none of the Depositor, the Master Servicer, the Trustee, the
Securities Administrator, the Servicer nor any such agent shall be affected by
notice to the contrary.

            The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment to the Certificateholders of all amounts
held by the Securities Administrator and required to be paid to them pursuant to
the Agreement following the earlier of (i) the final payment or other
liquidation (or any advance with respect thereto) of the last Mortgage Loan
remaining in REMIC I and (ii) the purchase by the party designated in the
Agreement at a price determined as provided in the Agreement from REMIC I of all
the Mortgage Loans and all property acquired in respect of such Mortgage Loans.
The Agreement permits, but does not require, the party designated in the
Agreement to purchase from REMIC I all the Mortgage Loans and all property
acquired in respect of any Mortgage Loan at a price determined as provided in
the Agreement. The exercise of such right will effect early retirement of the
Certificates; however, such right to purchase is subject to the aggregate Stated
Principal Balance of the Mortgage Loans at the time of purchase being less than
10% of the aggregate principal balance of the Mortgage Loans as of the Cut-off
Date.

            The recitals contained herein shall be taken as statements of the
Depositor and neither the Trustee nor the Securities Administrator assume any
responsibility for their correctness.

                                     A-2-5
<PAGE>

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

                                     A-2-6
<PAGE>

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

Dated: August 19, 2003

                                      WELLS FARGO BANK MINNESOTA, NATIONAL
                                      ASSOCIATION
                                      as Securities Administrator

                                      By:_______________________________________
                                                   Authorized Officer

                          CERTIFICATE OF AUTHENTICATION

            This is one of the Class M-[1][2][3][4][5][6] Certificates referred
to in the within-mentioned Agreement.

                                      WELLS FARGO BANK MINNESOTA, NATIONAL
                                      ASSOCIATION
                                      as Securities Administrator

                                      By:_______________________________________
                                                  Authorized Signatory

<PAGE>

                                  ABBREVIATIONS

            The following abbreviations, when used in the inscription on the
face of this instrument, shall be construed as though they were written out in
full according to applicable laws or regulations:

TEN COM  -  as tenants in common        UNIF GIFT MIN ACT -      Custodian
                                                                 ----------
                                                               (Cust) (Minor)
                                                          under Uniform Gifts to
                                                                Minors Act
TEN ENT  -  as tenants by the entireties

JT TEN   -  as joint tenants with right if             _____________
            survivorship and not as tenants            (State)
            in common

    Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT

            FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto _______________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee)

a Percentage Interest equal to _____% evidenced by the within Asset Backed
Pass-Through Certificate and hereby authorize(s) the registration of transfer of
such interest to assignee on the Certificate Register of the Trust Fund.

            I (we) further direct the Securities Administrator to issue a new
Certificate of a like Percentage Interest 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

<PAGE>

                            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 A-3

                          FORM OF CLASS CE 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").

      THIS CERTIFICATE IS SUBORDINATE TO THE CLASS A CERTIFICATES, THE CLASS M-1
      CERTIFICATES, THE CLASS M- 2 CERTIFICATES, THE CLASS M-3 CERTIFICATES, THE
      CLASS M-4 CERTIFICATES, THE CLASS M-5 CERTIFICATES AND THE CLASS M-6
      CERTIFICATES TO THE EXTENT DESCRIBED IN THE AGREEMENT REFERRED TO 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 THAT ARE
      EXEMPT FROM REGISTRATION UNDER SUCH ACT AND UNDER APPLICABLE STATE LAW AND
      IS TRANSFERRED IN ACCORDANCE WITH THE PROVISIONS OF SECTION 6.02 OF THE
      AGREEMENT.

      NO TRANSFER OF THIS CERTIFICATE TO AN EMPLOYEE BENEFIT PLAN OR OTHER
      RETIREMENT ARRANGEMENT SUBJECT TO THE EMPLOYEE RETIREMENT INCOME SECURITY
      ACT OF 1974, AS AMENDED, OR THE CODE WILL BE REGISTERED EXCEPT IN
      COMPLIANCE WITH THE PROCEDURES DESCRIBED HEREIN.

<PAGE>

<TABLE>
<S>                                                   <C>
Series 2003-HS1                                       Aggregate Certificate Principal Balance of the
                                                      Class CE Certificates as of the Issue Date:
Pass-Through Rate: Variable                           $_____________

Cut-off Date and date of Pooling and                  Denomination: $_________________
Servicing Agreement: August 1, 2003
                                                      Master Servicer: Wells Fargo Bank
First Distribution Date: September 25, 2003           Minnesota, National Association

No. __                                                Trustee: Bank One National Association

Aggregate Notional Amount of the Class                Issue Date: August 19, 2003
CE Certificates as of the Issue Date:
$_____________

Notional Amount: $_______________
</TABLE>

               DISTRIBUTIONS IN REDUCTION OF THE CERTIFICATE PRINCIPAL BALANCE
               OF THIS CERTIFICATE MAY BE MADE MONTHLY AS SET FORTH HEREIN.
               ACCORDINGLY, THE OUTSTANDING CERTIFICATE PRINCIPAL BALANCE HEREOF
               AT ANY TIME MAY BE LESS THAN THE AMOUNT SHOWN ABOVE AS THE
               DENOMINATION OF THIS CERTIFICATE.

                                      A-4-2
<PAGE>

          ACE SECURITIES CORP. HOME EQUITY LOAN TRUST, SERIES 2003-HS1
                      ASSET BACKED PASS-THROUGH CERTIFICATE

evidencing a beneficial ownership interest in a Trust Fund (the "Trust Fund")
zconsisting primarily of a pool of conventional one- to four-family, fixed and
adjustable-rate and fixed-rate, first and second lien mortgage loans (the
"Mortgage Loans") formed and sold by

                              ACE SECURITIES CORP.

      THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN ACE
      SECURITIES CORP., THE MASTER SERVICER, THE SECURITIES ADMINISTRATOR, THE
      SERVICER, THE TRUSTEE OR ANY OF THEIR RESPECTIVE AFFILIATES. NEITHER THIS
      CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE GUARANTEED BY ANY AGENCY
      OR INSTRUMENTALITY OF THE UNITED STATES.

            This certifies that ________________ is the registered owner of a
Percentage Interest (obtained by dividing the denomination of this Certificate
by the aggregate Certificate Principal Balance of the Class CE Certificates as
of the Issue Date) in that certain beneficial ownership interest evidenced by
all the Class CE Certificates in REMIC II created pursuant to a Pooling and
Servicing Agreement, dated as specified above (the "Agreement"), among ACE
Securities Corp., as depositor (hereinafter called the "Depositor," which term
includes any successor entity under the Agreement), Wells Fargo Bank Minnesota,
National Association, as master servicer (the "Master Servicer") and securities
administrator (the "Securities Administrator"), The Provident Bank, as servicer
(the "Servicer") and Bank One National Association, 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, distributions 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 such 25th day (a "Distribution Date"),
commencing on the First Distribution Date specified above, to the Person in
whose name this Certificate is registered on the last Business Day of the
calendar month immediately preceding the month in which the related Distribution
Date occurs (the "Record Date"), in an amount equal to the product of the
Percentage Interest evidenced by this Certificate and the amount required to be
distributed to the Holders of Class CE Certificates on such Distribution Date
pursuant to the Agreement.

            All distributions to the Holder of this Certificate under the
Agreement will be made or caused to be made by the Securities Administrator by
wire transfer in immediately available funds to the account of the Person
entitled thereto if such Person shall have so notified the Securities
Administrator in writing at least five Business Days prior to the Record Date
immediately prior to such Distribution Date and

                                     A-4-3
<PAGE>

is the registered owner of Class CE Certificates the aggregate initial
Certificate Principal Balance of which is in excess of the lesser of (i)
$5,000,000 or (ii) two-thirds of the aggregate initial Certificate Principal
Balance of the Class CE Certificates, or otherwise by check mailed by first
class mail 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 by the
Securities Administrator of the pendency of such distribution and only upon
presentation and surrender of this Certificate at the office or agency appointed
by the Securities Administrator for that purpose as provided in the Agreement.

            This Certificate is one of a duly authorized issue of Certificates
designated as Asset Backed Pass-Through Certificates of the Series specified on
the face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof equal to the
denomination specified on the face hereof divided by the aggregate Certificate
Principal Balance of the Class of Certificates specified on the face hereof.

            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. As provided in the
Agreement, withdrawals from the Collection Account and the Distribution Account
may be made from time to time for purposes other than distributions to
Certificateholders, such purposes including reimbursement of advances made, or
certain expenses incurred, with respect to the Mortgage Loans.

            The Agreement permits, with certain exceptions therein provided, the
amendment thereof and the modification of the rights and obligations of the
Depositor, the Master Servicer, the Trustee, the Securities Administrator, the
Servicer and the rights of the Certificateholders under the Agreement at any
time by the Depositor, the Master Servicer, the Trustee, the Securities
Administrator and the Servicer with the consent of the Holders of Certificates
entitled to at least 66% of the Voting Rights. 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 this Certificate. The Agreement also permits the
amendment thereof, in certain limited circumstances, without the consent of the
Holders of any of the 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 Securities Administrator as
provided in the Agreement, duly endorsed by, or accompanied by an assignment in
the form below or other written instrument of transfer in form satisfactory to
the Securities Administrator duly executed by, the Holder hereof or such
Holder's attorney duly authorized in writing, and thereupon one or more new
Certificates of the same Class in authorized denominations evidencing the same
aggregate Percentage Interest will be issued to the designated transferee or
transferees.

            No transfer of this Certificate shall be made unless the transfer is
made pursuant to an effective registration statement under the Securities Act of
1933, as amended (the "1933 Act"), and an

                                     A-4-4
<PAGE>

effective registration or qualification under applicable state securities laws,
or is made in a transaction that does not require such registration or
qualification. In the event that such a transfer of this Certificate is to be
made without registration or qualification, the Securities Administrator shall
require receipt of (i) if such transfer is purportedly being made in reliance
upon Rule 144A under the 1933 Act, written certifications from the Holder of the
Certificate desiring to effect the transfer, and from such Holder's prospective
transferee, substantially in the forms attached to the Agreement as Exhibit B-1,
and (ii) in all other cases, an Opinion of Counsel satisfactory to it that such
transfer may be made without such registration or qualification (which Opinion
of Counsel shall not be an expense of the Trust Fund or of the Depositor, the
Trustee, the Master Servicer or the Securities Administrator in their respective
capacities as such), together with copies of the written certification(s) of the
Holder of the Certificate desiring to effect the transfer and/or such Holder's
prospective transferee upon which such Opinion of Counsel is based. None of the
Depositor, the Trustee or the Securities Administrator is obligated to register
or qualify the Class of Certificates specified on the face hereof under the 1933
Act or any other securities law or to take any action not otherwise required
under the Agreement to permit the transfer of such Certificates without
registration or qualification. Any Holder desiring to effect a transfer of this
Certificate shall be required to indemnify the Trustee, the Depositor, the
Master Servicer and the Securities Administrator 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.

            No transfer of this Certificate to a Plan subject to ERISA or
Section 4975 of the Code, any Person acting, directly or indirectly, on behalf
of any such Plan or any Person using "Plan Assets" to acquire this Certificate
shall be made except in accordance with Section 6.02(c) of the Agreement.

            The Certificates are issuable in fully registered form only without
coupons in Classes and denominations representing Percentage Interests specified
in the Agreement. As provided in the Agreement and subject to certain
limitations therein set forth, the Certificates are exchangeable for new
Certificates of the same Class in authorized denominations evidencing the same
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
of Certificates, but the Securities Administrator may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed in
connection with any transfer or exchange of Certificates.

            The Depositor, the Master Servicer, the Trustee, the Securities
Administrator, the Servicer and any agent of the Depositor, the Master Servicer,
the Trustee, the Securities Administrator or the Servicer may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and none of the Depositor, the Master Servicer, the Trustee, the
Securities Administrator, the Servicer nor any such agent shall be affected by
notice to the contrary.

            The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment to the Certificateholders of all amounts
held by the Securities Administrator and required to be paid to them pursuant to
the Agreement following the earlier of (i) the final payment or other
liquidation (or any advance with respect thereto) of the last Mortgage Loan
remaining in REMIC I and (ii) the purchase by the party designated in the
Agreement at a price determined as provided in the Agreement

                                     A-4-5
<PAGE>

from REMIC I of all the Mortgage Loans and all property acquired in respect of
such Mortgage Loans. The Agreement permits, but does not require, the party
designated in the Agreement to purchase from REMIC I all the Mortgage Loans and
all property acquired in respect of any Mortgage Loan at a price determined as
provided in the Agreement. The exercise of such right will effect early
retirement of the Certificates; however, such right to purchase is subject to
the aggregate Stated Principal Balance of the Mortgage Loans at the time of
purchase being less than 10% of the aggregate principal balance of the Mortgage
Loans as of the Cut-off Date.

            The recitals contained herein shall be taken as statements of the
Depositor and neither the Trustee nor the Securities Administrator assume any
responsibility for their correctness.

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

                                     A-4-6
<PAGE>

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

Dated: August 19, 2003

                                            WELLS FARGO BANK MINNESOTA, NATIONAL
                                            ASSOCIATION
                                            as Securities Administrator

                                            By:_________________________________
                                                         Authorized Officer

                          CERTIFICATE OF AUTHENTICATION

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

                                            WELLS FARGO BANK MINNESOTA, NATIONAL
                                            ASSOCIATION
                                            as Securities Administrator

                                            By:_________________________________
                                                       Authorized Officer

<PAGE>

                                  ABBREVIATIONS

The following abbreviations, when used in the inscription on the face of this
instrument, shall be construed as though they were written out in full according
to applicable laws or regulations:

TEN COM  -  as tenants in common        UNIF GIFT MIN ACT -      Custodian
                                                                 ----------
                                                               (Cust) (Minor)
                                                          under Uniform Gifts to
                                                                Minors Act
TEN ENT  -  as tenants by the entireties

JT TEN   -  as joint tenants with right if             _____________
            survivorship and not as tenants            (State)
            in common

     Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT

            FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto _______________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
 (Please print or typewrite name, address including postal zip code, and
Taxpayer Identification Number of assignee) a Percentage Interest equal to ____%
evidenced by the within Asset Backed Pass-Through Certificates and hereby
authorize(s) the registration of transfer of such interest to assignee on the
Certificate Register of the Trust Fund.

            I (we) further direct the Securities Administrator to issue a new
Certificate of a like Percentage Interest 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

<PAGE>

                            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 A-4

                               CLASS P 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").

      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 THAT ARE
      EXEMPT FROM REGISTRATION UNDER SUCH ACT AND UNDER APPLICABLE STATE LAW AND
      IS TRANSFERRED IN ACCORDANCE WITH THE PROVISIONS OF SECTION 6.02 OF THE
      AGREEMENT.

      NO TRANSFER OF THIS CERTIFICATE TO AN EMPLOYEE BENEFIT PLAN OR OTHER
      RETIREMENT ARRANGEMENT SUBJECT TO THE EMPLOYEE RETIREMENT INCOME SECURITY
      ACT OF 1974, AS AMENDED, OR THE CODE WILL BE REGISTERED EXCEPT IN
      COMPLIANCE WITH THE PROCEDURES DESCRIBED HEREIN.

<PAGE>

<TABLE>
<S>                                                    <C>
Series 2003-HS1                                        Aggregate Certificate Principal Balance of the
                                                       Class P Certificates as of the Issue Date:
                                                       $100.00
Cut-off Date and date of Pooling and
Servicing Agreement: August 1, 2003                    Denomination: $100.00

First Distribution Date: September 25, 2003            Master Servicer: Wells Fargo Bank
                                                       Minnesota, National Association
No. __
                                                       Trustee: Bank One National Association

                                                       Issue Date: August 19, 2003
</TABLE>

      DISTRIBUTIONS IN REDUCTION OF THE CERTIFICATE PRINCIPAL BALANCE OF THIS
      CERTIFICATE MAY BE MADE MONTHLY AS SET FORTH HEREIN. ACCORDINGLY, THE
      OUTSTANDING CERTIFICATE PRINCIPAL BALANCE HEREOF AT ANY TIME MAY BE LESS
      THAN THE AMOUNT SHOWN ABOVE AS THE DENOMINATION OF THIS CERTIFICATE.

                                      A-5-2
<PAGE>

          ACE SECURITIES CORP. HOME EQUITY LOAN TRUST, SERIES 2003-HS1
                      ASSET BACKED PASS-THROUGH CERTIFICATE

evidencing a beneficial ownership interest in a Trust Fund (the "Trust Fund")
consisting primarily of a pool of conventional one- to four-family, fixed and
adjustable-rate and fixed-rate, first and second lien mortgage loans (the
"Mortgage Loans") formed and sold by

                              ACE SECURITIES CORP.

      THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN ACE
      SECURITIES CORP., THE MASTER SERVICER, THE SECURITIES ADMINISTRATOR, THE
      SERVICER, THE TRUSTEE OR ANY OF THEIR RESPECTIVE AFFILIATES. NEITHER THIS
      CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE GUARANTEED BY ANY AGENCY
      OR INSTRUMENTALITY OF THE UNITED STATES.

            This certifies that____________________ is the registered owner of a
Percentage Interest (obtained by dividing the denomination of this Certificate
by the aggregate Certificate Principal Balance of the Class P Certificates as of
the Issue Date) in that certain beneficial ownership interest evidenced by all
the Class P Certificates in REMIC II created pursuant to a Pooling and Servicing
Agreement, dated as specified above (the "Agreement"), among ACE Securities
Corp., as depositor (hereinafter called the "Depositor", which term includes any
successor entity under the Agreement), Wells Fargo Bank Minnesota, National
Association, as master servicer (the "Master Servicer"), and securities
administrator (the "Securities Administrator"), The Provident Bank as servicer
(the "Servicer") and Bank One National Association, 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, distributions 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 such 25th day (a "Distribution Date"),
commencing on the First Distribution Date specified above, to the Person in
whose name this Certificate is registered on the last Business Day of the
calendar month immediately preceding the month in which the related Distribution
Date occurs (the "Record Date"), in an amount equal to the product of the
Percentage Interest evidenced by this Certificate and the amount required to be
distributed to the Holders of Class P Certificates on such Distribution Date
pursuant to the Agreement.

            All distributions to the Holder of this Certificate under the
Agreement will be made or caused to be made by the Securities Administrator by
wire transfer in immediately available funds to the account of the Person
entitled thereto if such Person shall have so notified the Securities
Administrator in writing at least five Business Days prior to the Record Date
immediately prior to such Distribution Date and

                                     A-5-3
<PAGE>

is the registered owner of Class P Certificates the aggregate initial
Certificate Principal Balance of which is in excess of the lesser of (i)
$5,000,000 or (ii) two-thirds of the aggregate initial Certificate Principal
Balance of the Class P Certificates, or otherwise by check mailed by first class
mail 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 by the Securities
Administrator of the pendency of such distribution and only upon presentation
and surrender of this Certificate at the office or agency appointed by the
Securities Administrator for that purpose as provided in the Agreement.

            This Certificate is one of a duly authorized issue of Certificates
designated as Asset Backed Pass-Through Certificates of the Series specified on
the face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof equal to the
denomination specified on the face hereof divided by the aggregate Certificate
Principal Balance of the Class of Certificates specified on the face hereof.

            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. As provided in the
Agreement, withdrawals from the Collection Account and the Distribution Account
may be made from time to time for purposes other than distributions to
Certificateholders, such purposes including reimbursement of advances made, or
certain expenses incurred, with respect to the Mortgage Loans.

            The Agreement permits, with certain exceptions therein provided, the
amendment thereof and the modification of the rights and obligations of the
Depositor, the Master Servicer, the Trustee, the Securities Administrator, the
Servicer and the rights of the Certificateholders under the Agreement at any
time by the Depositor, the Master Servicer, the Trustee, the Securities
Administrator and the Servicer with the consent of the Holders of Certificates
entitled to at least 66% of the Voting Rights. 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 this Certificate. The Agreement also permits the
amendment thereof, in certain limited circumstances, without the consent of the
Holders of any of the 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 Securities Administrator as
provided in the Agreement, duly endorsed by, or accompanied by an assignment in
the form below or other written instrument of transfer in form satisfactory to
the Securities Administrator duly executed by, the Holder hereof or such
Holder's attorney duly authorized in writing, and thereupon one or more new
Certificates of the same Class in authorized denominations evidencing the same
aggregate Percentage Interest will be issued to the designated transferee or
transferees.

            No transfer of this Certificate shall be made unless the transfer is
made pursuant to an effective registration statement under the Securities Act of
1933, as amended (the "1933 Act"), and an

                                     A-5-4
<PAGE>

effective registration or qualification under applicable state securities laws,
or is made in a transaction that does not require such registration or
qualification. In the event that such a transfer of this Certificate is to be
made without registration or qualification, the Securities Administrator shall
require receipt of (i) if such transfer is purportedly being made in reliance
upon Rule 144A under the 1933 Act, written certifications from the Holder of the
Certificate desiring to effect the transfer, and from such Holder's prospective
transferee, substantially in the forms attached to the Agreement as Exhibit B-1,
and (ii) in all other cases, an Opinion of Counsel satisfactory to it that such
transfer may be made without such registration or qualification (which Opinion
of Counsel shall not be an expense of the Trust Fund or of the Depositor, the
Trustee, the Master Servicer or the Securities Administrator in their respective
capacities as such), together with copies of the written certification(s) of the
Holder of the Certificate desiring to effect the transfer and/or such Holder's
prospective transferee upon which such Opinion of Counsel is based. None of the
Depositor, the Trustee or the Securities Administrator is obligated to register
or qualify the Class of Certificates specified on the face hereof under the 1933
Act or any other securities law or to take any action not otherwise required
under the Agreement to permit the transfer of such Certificates without
registration or qualification. Any Holder desiring to effect a transfer of this
Certificate shall be required to indemnify the Trustee, the Depositor, the
Master Servicer and the Securities Administrator 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.

            No transfer of this Certificate to a Plan subject to ERISA or
Section 4975 of the Code, any Person acting, directly or indirectly, on behalf
of any such Plan or any Person using "Plan Assets" to acquire this Certificate
shall be made except in accordance with Section 6.02(c) of the Agreement.

            The Certificates are issuable in fully registered form only without
coupons in Classes and denominations representing Percentage Interests specified
in the Agreement. As provided in the Agreement and subject to certain
limitations therein set forth, the Certificates are exchangeable for new
Certificates of the same Class in authorized denominations evidencing the same
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
of Certificates, but the Securities Administrator may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed in
connection with any transfer or exchange of Certificates.

            The Depositor, the Master Servicer, the Trustee, the Securities
Administrator, the Servicer and any agent of the Depositor, the Master Servicer,
the Trustee, the Securities Administrator or the Servicer may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and none of the Depositor, the Master Servicer, the Trustee, the
Securities Administrator, the Servicer nor any such agent shall be affected by
notice to the contrary.

            The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment to the Certificateholders of all amounts
held by the Securities Administrator and required to be paid to them pursuant to
the Agreement following the earlier of (i) the final payment or other
liquidation (or any advance with respect thereto) of the last Mortgage Loan
remaining in REMIC I and (ii) the purchase by the party designated in the
Agreement at a price determined as provided in the Agreement

                                     A-5-5
<PAGE>

from REMIC I of all the Mortgage Loans and all property acquired in respect of
such Mortgage Loans. The Agreement permits, but does not require, the party
designated in the Agreement to purchase from REMIC I all the Mortgage Loans and
all property acquired in respect of any Mortgage Loan at a price determined as
provided in the Agreement. The exercise of such right will effect early
retirement of the Certificates; however, such right to purchase is subject to
the aggregate Stated Principal Balance of the Mortgage Loans at the time of
purchase being less than 10% of the aggregate principal balance of the Mortgage
Loans as of the Cut-off Date.

            The recitals contained herein shall be taken as statements of the
Depositor and neither the Trustee nor the Securities Administrator assume any
responsibility for their correctness.

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

<PAGE>

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

Dated: August 19, 2003

                                            WELLS FARGO BANK MINNESOTA, NATIONAL
                                            ASSOCIATION
                                            as Securities Administrator

                                            By:_________________________________
                                                        Authorized Officer

                          CERTIFICATE OF AUTHENTICATION

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

                                            WELLS FARGO BANK MINNESOTA, NATIONAL
                                            ASSOCIATION
                                            as Securities Administrator

                                            By:_________________________________
                                                        Authorized Officer

                                     A-5-7
<PAGE>

                                  ABBREVIATIONS

The following abbreviations, when used in the inscription on the face of this
instrument, shall be construed as though they were written out in full according
to applicable laws or regulations:

TEN COM  -  as tenants in common        UNIF GIFT MIN ACT -      Custodian
                                                                 ----------
                                                               (Cust) (Minor)
                                                          under Uniform Gifts to
                                                                Minors Act
TEN ENT  -  as tenants by the entireties

JT TEN   -  as joint tenants with right if             _____________
            survivorship and not as tenants            (State)
            in common

     Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT

            FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto _______________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee) a Percentage Interest equal to ____%
evidenced by the within Asset Backed Pass-Through Certificates and hereby
authorize(s) the registration of transfer of such interest to assignee on the
Certificate Register of the Trust Fund.

            I (we) further direct the Securities Administrator to issue a new
Certificate of a like Percentage Interest 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

<PAGE>

                            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 A-5

                           FORM OF CLASS R CERTIFICATE

      THIS CERTIFICATE MAY NOT BE TRANSFERRED TO A NON- UNITED STATES PERSON.

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

      ANY RESALE, TRANSFER OR OTHER DISPOSITION OF THIS CERTIFICATE MAY BE MADE
      ONLY IN ACCORDANCE WITH THE PROVISIONS OF SECTION 6.02 OF THE AGREEMENT
      REFERRED TO 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 THAT ARE
      EXEMPT FROM REGISTRATION UNDER SUCH ACT AND UNDER APPLICABLE STATE LAW AND
      IS TRANSFERRED IN ACCORDANCE WITH THE PROVISIONS OF SECTION 6.02 OF THE
      AGREEMENT.

      NO TRANSFER OF THIS CERTIFICATE TO AN EMPLOYEE BENEFIT PLAN OR OTHER
      RETIREMENT ARRANGEMENT SUBJECT TO THE EMPLOYEE RETIREMENT INCOME SECURITY
      ACT OF 1974, AS AMENDED, OR THE CODE WILL BE REGISTERED EXCEPT IN
      COMPLIANCE WITH THE PROCEDURES DESCRIBED HEREIN.

      ANY RESALE, TRANSFER OR OTHER DISPOSITION OF THIS CERTIFICATE MAY BE MADE
      ONLY IF THE PROPOSED TRANSFEREE PROVIDES (I) AN AFFIDAVIT TO THE
      SECURITIES ADMINISTRATOR THAT (A) SUCH TRANSFEREE IS NOT (1) THE UNITED
      STATES OR ANY POSSESSION THEREOF, ANY STATE OR POLITICAL SUBDIVISION
      THEREOF, ANY FOREIGN GOVERNMENT, ANY INTERNATIONAL ORGANIZATION, OR ANY
      AGENCY OR INSTRUMENTALITY OF ANY OF THE FOREGOING,

<PAGE>

      (2) ANY ORGANIZATION (OTHER THAN A COOPERATIVE DESCRIBED IN SECTION 521 OF
      THE CODE) THAT 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, (3) ANY ORGANIZATION DESCRIBED IN SECTION 1381(a)(2)(C) OF THE
      CODE (ANY SUCH PERSON DESCRIBED IN THE FOREGOING CLAUSES (1), (2) OR (3)
      SHALL HEREINAFTER BE REFERRED TO AS A "DISQUALIFIED ORGANIZATION") OR (4)
      AN AGENT OF A DISQUALIFIED ORGANIZATION AND (B) NO PURPOSE OF SUCH
      TRANSFER IS TO IMPEDE THE ASSESSMENT OR COLLECTION OF TAX, AND (II) SUCH
      TRANSFEREE SATISFIES CERTAIN ADDITIONAL CONDITIONS RELATING TO THE
      FINANCIAL CONDITION OF THE PROPOSED TRANSFEREE. NOTWITHSTANDING THE
      REGISTRATION IN THE CERTIFICATE REGISTER OF ANY TRANSFER, SALE OR OTHER
      DISPOSITION OF THIS CERTIFICATE TO A DISQUALIFIED ORGANIZATION OR AN AGENT
      OF A DISQUALIFIED ORGANIZATION, SUCH 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 HEREOF SHALL BE DEEMED TO HAVE CONSENTED
      TO THE PROVISIONS OF THIS PARAGRAPH AND THE PROVISIONS OF SECTION 6.02(d)
      OF THE AGREEMENT REFERRED TO HEREIN. ANY PERSON THAT IS A DISQUALIFIED
      ORGANIZATION IS PROHIBITED FROM ACQUIRING BENEFICIAL OWNERSHIP OF THIS
      CERTIFICATE.

<TABLE>
<S>                                                         <C>
Series 2003-HS1, Class R                                    Aggregate Percentage Interest of the Class R
                                                            Certificates as of the Issue Date: 100.00%
Date of Pooling and Servicing Agreement
 and Cut-off Date: August 1, 2003                           Master Servicer: Wells Fargo Bank Minnesota,
                                                            National Association

First Distribution Date:                                    Trustee: Bank One National Association
September 25, 2003
No __                                                       Issue Date: August 19, 2003
</TABLE>

                                      A-6-2
<PAGE>

          ACE SECURITIES CORP. HOME EQUITY LOAN TRUST, SERIES 2003-HS1
                      ASSET BACKED PASS-THROUGH CERTIFICATE

evidencing a beneficial ownership interest in a Trust Fund (the "Trust Fund")
consisting primarily of a pool of conventional one- to four-family, fixed and
adjustable-rate first and second lien mortgage loans (the "Mortgage Loans")
formed and sold by

                              ACE SECURITIES CORP.

      THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN ACE
      SECURITIES CORP., THE MASTER SERVICER, THE SECURITIES ADMINISTRATOR, THE
      SERVICER, THE TRUSTEE OR ANY OF THEIR RESPECTIVE AFFILIATES. NEITHER THIS
      CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE GUARANTEED BY ANY AGENCY
      OR INSTRUMENTALITY OF THE UNITED STATES.

                                     A-6-3
<PAGE>

            This certifies that _______________ is the registered owner of a
Percentage Interest (obtained by dividing the denomination of this Certificate
by the aggregate Certificate Principal Balance of the Class R Certificates as of
the Issue Date) in that certain beneficial ownership interest evidenced by all
the Class R Certificates in REMIC II created pursuant to a Pooling and Servicing
Agreement, dated as specified above (the "Agreement"), among ACE Securities
Corp., as depositor (hereinafter called the "Depositor", which term includes any
successor entity under the Agreement), Wells Fargo Bank Minnesota, National
Association, as master servicer (the "Master Servicer") and securities
administrator (the "Securities Administrator"), The Provident Bank as servicer
(the "Servicer") and Bank One National Association, 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, distributions 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 (a "Distribution Date"), commencing on the
First Distribution Date specified above, to the Person in whose name this
Certificate is registered on the Record Date, in an amount equal to the product
of the Percentage Interest evidenced by this Certificate and the amount required
to be distributed to the Holders of Class R Certificates on such Distribution
Date pursuant to the Agreement.

            All distributions to the Holder of this Certificate under the
Agreement will be made or caused to be made by the Securities Administrator by
wire transfer in immediately available funds to the account of the Person
entitled thereto if such Person shall have so notified the Securities
Administrator in writing at least five Business Days prior to the Record Date
immediately prior to such Distribution Date and is the registered owner of Class
R Certificates, or otherwise by check mailed by first class mail 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 by the Securities Administrator of the
pendency of such distribution and only upon presentation and surrender of this
Certificate at the office or agency appointed by the Securities Administrator
for that purpose as provided in the Agreement.

            This Certificate is one of a duly authorized issue of Certificates
designated as Asset Backed Pass-Through Certificates of the Series specified on
the face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof equal to the
denomination specified on the face hereof divided by the aggregate Certificate
Principal Balance of the Class of Certificates specified on the face hereof.

            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. As provided in the
Agreement, withdrawals from the Collection Account and the Distribution Account
may be made

                                     A-6-4
<PAGE>

from time to time for purposes other than distributions to
Certificateholders, such purposes including reimbursement of advances made, or
certain expenses incurred, with respect to the Mortgage Loans.

            The Agreement permits, with certain exceptions therein provided, the
amendment thereof and the modification of the rights and obligations of the
Depositor, the Master Servicer, the Trustee, the Securities Administrator, the
Servicer and the rights of the Certificateholders under the Agreement at any
time by the Depositor, the Master Servicer, the Trustee, the Securities
Administrator and the Servicer with the consent of the Holders of Certificates
entitled to at least 66% of the Voting Rights. 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 this Certificate. The Agreement also permits the
amendment thereof, in certain limited circumstances, without the consent of the
Holders of any of the 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 Securities Administrator as
provided in the Agreement, duly endorsed by, or accompanied by an assignment in
the form below or other written instrument of transfer in form satisfactory to
the Securities Administrator duly executed by, the Holder hereof or such Holders
attorney duly authorized in writing, and thereupon one or more new Certificates
of the same Class in authorized denominations evidencing the same aggregate
Percentage Interest will be issued to the designated transferee or transferees.

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

            No transfer of this Certificate shall be made unless the transfer is
made pursuant to an effective registration statement under the Securities Act of
1933, as amended (the "1933 Act"), and an effective registration or
qualification under applicable state securities laws, or is made in a
transaction that does not require such registration or qualification. In the
event that such a transfer of this Certificate is to be made without
registration or qualification, the Securities Administrator shall require
receipt of (i) if such transfer is purportedly being made in reliance upon Rule
144A under the 1933 Act, written certifications from the Holder of the
Certificate desiring to effect the transfer, and from such Holder's prospective
transferee, substantially in the forms attached to the Agreement as Exhibit B-1,
and (ii) in all other cases, an Opinion of Counsel satisfactory to it that such
transfer may be made without such registration or qualification (which Opinion
of Counsel shall not be an expense of the Trust Fund or of the Depositor, the
Trustee, the Master Servicer or the Securities Administrator in their respective
capacities as such), together with copies of the written certification(s) of the
Holder of the Certificate desiring to effect the transfer and/or such Holder's
prospective transferee upon which such Opinion of Counsel is based. None of the
Depositor, the Trustee or the Securities Administrator is obligated to register
or qualify the Class of

                                     A-6-5
<PAGE>

Certificates specified on the face hereof under the 1933 Act or any other
securities law or to take any action not otherwise required under the Agreement
to permit the transfer of such Certificates without registration or
qualification. Any Holder desiring to effect a transfer of this Certificate
shall be required to indemnify the Trustee, the Depositor, the Master Servicer
and the Securities Administrator 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.

            No transfer of this Certificate to a Plan subject to ERISA or
Section 4975 of the Code, any Person acting, directly or indirectly, on behalf
of any such Plan or any Person using "Plan Assets" to acquire this Certificate
shall be made except in accordance with Section 6.02 of the Agreement.

            Prior to registration of any transfer, sale or other disposition of
this Certificate, the proposed transferee shall provide to the Securities
Administrator (i) an affidavit to the effect that such transferee is any Person
other than a Disqualified Organization or the agent (including a broker, nominee
or middleman) of a Disqualified Organization, and (ii) a certificate that
acknowledges that (A) the Class R Certificates have been designated as
representing the beneficial ownership of the residual interests in each of REMIC
I and REMIC II, (B) it will include in its income a pro rata share of the net
income of the Trust Fund and that such income may be an "excess inclusion," as
defined in the Code, that, with certain exceptions, cannot be offset by other
losses or benefits from any tax exemption, and (C) it expects to have the
financial means to satisfy all of its tax obligations including those relating
to holding the Class R Certificates. Notwithstanding the registration in the
Certificate Register of any transfer, sale or other disposition of this
Certificate to a Disqualified Organization or an agent (including a broker,
nominee or middleman) of a Disqualified Organization, such 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, including, but not limited to,
the receipt of distributions in respect of this Certificate.

            The Holder of this Certificate, by its acceptance hereof, shall be
deemed to have consented to the provisions of Section 6.02 of the Agreement and
to any amendment of the Agreement deemed necessary by counsel of the Depositor
to ensure that the transfer of this Certificate to any Person other than a
Permitted Transferee or any other Person will not cause any portion of the Trust
Fund to cease to qualify as a REMIC or cause the imposition of a tax upon any
REMIC.

            No service charge will be made for any such registration of transfer
or exchange of Certificates, but the Securities Administrator may require
payment of a sum sufficient to cover any tax or other governmental charge that
may be imposed in connection with any transfer or exchange of Certificates.

            The Depositor, the Master Servicer, the Trustee, the Securities
Administrator, the Servicer and any agent of the Depositor, the Master Servicer,
the Trustee, the Securities Administrator or the Servicer may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and none of the Depositor, the Master Servicer, the Trustee, the
Securities Administrator, the Servicer nor any such agent shall be affected by
notice to the contrary.

                                     A-6-6
<PAGE>

            The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment to the Certificateholders of all amounts
held by the Securities Administrator and required to be paid to them pursuant to
the Agreement following the earlier of (i) the final payment or other
liquidation (or any advance with respect thereto) of the last Mortgage Loan
remaining in REMIC I and (ii) the purchase by the party designated in the
Agreement at a price determined as provided in the Agreement from REMIC I of all
the Mortgage Loans and all property acquired in respect of such Mortgage Loans.
The Agreement permits, but does not require, the party designated in the
Agreement to purchase from REMIC I all the Mortgage Loans and all property
acquired in respect of any Mortgage Loan at a price determined as provided in
the Agreement. The exercise of such right will effect early retirement of the
Certificates; however, such right to purchase is subject to the aggregate Stated
Principal Balance of the Mortgage Loans at the time of purchase being less than
10% of the aggregate principal balance of the Mortgage Loans as of the Cut-off
Date.

            The recitals contained herein shall be taken as statements of the
Depositor and neither the Trustee nor the Securities Administrator assume any
responsibility for their correctness.

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

                                     A-6-7
<PAGE>

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

Dated: August 19, 2003

                                            WELLS FARGO BANK MINNESOTA, NATIONAL
                                            ASSOCIATION
                                            as Securities Administrator

                                            By:_________________________________
                                                      Authorized Officer

                          CERTIFICATE OF AUTHENTICATION

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

                                            WELLS FARGO BANK MINNESOTA, NATIONAL
                                            ASSOCIATION
                                            as Securities Administrator

                                            By:_________________________________
                                                      Authorized Signatory

<PAGE>

                                  ABBREVIATIONS

            The following abbreviations, when used in the inscription on the
face of this instrument, shall be construed as though they were written out in
full according to applicable laws or regulations:

TEN COM  -  as tenants in common        UNIF GIFT MIN ACT -      Custodian
                                                                 ----------
                                                               (Cust) (Minor)
                                                          under Uniform Gifts to
                                                                Minors Act
TEN ENT  -  as tenants by the entireties

JT TEN   -  as joint tenants with right if             _____________
            survivorship and not as tenants            (State)
            in common

    Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT

            FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee)

a Percentage Interest equal to _____% evidenced by the within Asset Backed
Pass-Through Certificate and hereby authorize(s) the registration of transfer of
such interest to assignee on the Certificate Register of the Trust Fund.

            I (we) further direct the Securities Administrator to issue a new
Certificate of a like Percentage Interest 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

<PAGE>

                            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 TRANSFEROR REPRESENTATION LETTER

                                     [Date]

Wells Fargo Bank Minnesota, National Association
Sixth and Marquette Avenue
Minneapolis, Minnesota 55479
Attention: Corporate Trust ACE 2003-HS1

            Re:   ACE Securities Corp. Home Equity Loan Trust,
                  Series 2003-HS1 Asset Backed Pass-Through Certificates,
                  Class CE, Class P and Class R Certificates

Ladies and Gentlemen:

            In connection with the transfer by ______________________ (the
"Transferor") to ___________________ (the "Transferee") of the captioned
mortgage pass-through certificates (the "Certificates"), the Transferor hereby
certifies as follows:

            Neither the Transferor 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, (e) has taken any other action, that (in the case of each of
subclauses (a) through (e) above) would constitute a distribution of the
Certificates under the Securities Act of 1933, as amended (the "1933 Act"), or
would render the disposition of any Certificate a violation of Section 5 of the
1933 Act or any state securities law or would require registration or
qualification pursuant thereto. The Transferor will not act, nor has it
authorized or will it authorize any person to act, in any manner set forth in
the foregoing sentence with respect to any Certificate. The Transferor will not
sell or otherwise transfer any of the Certificates, except in compliance with
the provisions of that certain Pooling and Servicing Agreement, dated as of
August 1, 2003, among ACE Securities Corp. as Depositor, The Provident Bank as
Servicer, Wells Fargo Bank Minnesota, National Association as Master Servicer
and Securities Administrator and Bank One National Association as trustee (the
"Pooling and Servicing Agreement"), pursuant to which Pooling and Servicing
Agreement the Certificates were issued.

<PAGE>

            Capitalized terms used but not defined herein shall have the
meanings assigned thereto in the Pooling and Servicing Agreement.

                                      Very truly yours,

                                      [Transferor]

                                      By:______________________________
                                      Name:
                                      Title:

                                 B-1-2
<PAGE>

                    FORM OF TRANSFEREE REPRESENTATION LETTER

                                                      [Date]

Wells Fargo Bank Minnesota, National Association
Sixth and Marquette Avenue
Minneapolis, Minnesota 55479
Attention: Corporate Trust ACE 2003-HS1

            Re:   ACE Securities Corp. Home Equity Loan Trust,
                  Series 2003-HS1 Asset Backed Pass-Through Certificates,
                  Class CE, Class P and Class R Certificates

Ladies and Gentlemen:

            In connection with the purchase from ______________________________
(the "Transferor") on the date hereof of the captioned trust certificates (the
"Certificates"), (the "Transferee") hereby certifies as follows:

            1. The Transferee is a "qualified institutional buyer" as that term
      is defined in Rule 144A ("Rule 144A") under the Securities Act of 1933
      (the "1933 Act") and has completed either of the forms of certification to
      that effect attached hereto as Annex 1 or Annex 2. The Transferee is aware
      that the sale to it is being made in reliance on Rule 144A. The Transferee
      is acquiring the Certificates for its own account or for the account of a
      qualified institutional buyer, and understands that such Certificate 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.

            2. The Transferee has been furnished with all information regarding
      (a) the Certificates and distributions thereon, (b) the nature,
      performance and servicing of the Mortgage Loans, (c) the Pooling and
      Servicing Agreement referred to below, and (d) any credit enhancement
      mechanism associated with the Certificates, that it has requested.

            3. The Transferee: (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 ("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

                                     B-1-3
<PAGE>

      Plan within the meaning of the Department of Labor ("DOL") regulation at
      29 C.F.R. ss. 2510.3-101 or (b) has provided the Securities Administrator
      with an opinion of counsel on which the Trustee, the Depositor, the Master
      Servicer, the Securities Administrator and the Servicer may rely,
      acceptable to and in form and substance satisfactory to the Trustee 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 Trust Fund, the Trustee, the Depositor, the Master Servicer, the
      Securities Administrator or the 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 Transferee hereby certifies, represents and
warrants to, and covenants with, the Depositor, the Trustee and the Servicer
that the Transferee will not transfer such Certificates to any Plan or person
unless such Plan or person meets the requirements set forth in either 3(a) or
(b) above.

            All capitalized terms used but not otherwise defined herein have the
respective meanings assigned thereto in the Pooling and Servicing Agreement,
dated as of August 1, 2003, among ACE Securities Corp. as Depositor, Wells Fargo
Bank Minnesota, National Association as Master Servicer and Securities
Administrator, The Provident Bank as Servicer and Bank One National Association
as Trustee, pursuant to which the Certificates were issued.

                                           [TRANSFEREE]

                                           By:_________________________________
                                           Name:
                                           Title:

                                     B-1-4
<PAGE>

                                                          ANNEX 1 TO EXHIBIT B-1

            QUALIFIED INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A

          [For Transferees Other Than Registered Investment Companies]

            The undersigned hereby certifies as follows to [name of Transferor]
(the "Transferor") and Wells Fargo Bank Minnesota, National Association, as
Securities Administrator, with respect to the asset backed pass-through
certificates (the "Certificates") described in the Transferee Certificate to
which this certification relates and to which this certification is an Annex:

            1. As indicated below, the undersigned is the President, Chief
Financial Officer, Senior Vice President or other executive officer of the
entity purchasing the Certificates (the "Transferee").

            2. In connection with purchases by the Transferee, the Transferee is
a "qualified institutional buyer" as that term is defined in Rule 144A under the
Securities Act of 1933 ("Rule 144A") because (i) the Transferee 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 Transferee's
most recent fiscal year (such amount being calculated in accordance with Rule
144A) and (ii) the Transferee satisfies the criteria in the category marked
below.

      ___   Corporation, etc. The Transferee is a corporation (other than a
            bank, savings and loan association or similar institution),
            Massachusetts or similar business trust, partnership, or any
            organization described in Section 501(c)(3) of the Internal Revenue
            Code of 1986.

      ___   Bank. The Transferee (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 statements, a copy of which is
            attached hereto.

      ___   Savings and Loan. The Transferee (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, a copy of which is attached hereto.

----------
(1)   Transferee must own and/or invest on a discretionary basis at least
      $100,000,000 in securities unless Transferee is a dealer, and, in that
      case, Transferee must own and/or invest on a discretionary basis at least
      $10,000,000 in securities.

                                     B-1-5
<PAGE>

      ___   Broker-dealer. The Transferee is a dealer registered pursuant to
            Section 15 of the Securities Exchange Act of 1934.

      ___   Insurance Company. The Transferee 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 Transferee 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 Transferee is an employee benefit plan within the
            meaning of Title I of the Employee Retirement Income Security Act of
            1974.

      ___   Investment Advisor The Transferee is an investment advisor
            registered under the Investment Advisers Act of 1940.

            3. The term "securities" as used herein does not include (i)
securities of issuers that are affiliated with the Transferee, (ii) securities
that are part of an unsold allotment to or subscription by the Transferee, if
the Transferee is a dealer, (iii) securities issued or guaranteed by the U.S. or
any instrumentality thereof, (iv) bank deposit notes and certificates of
deposit, (v) loan participations, (vi) repurchase agreements, (vii) securities
owned but subject to a repurchase agreement and (viii) 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 Transferee, the Transferee
used the cost of such securities to the Transferee and did not include any of
the securities referred to in the preceding paragraph. Further, in determining
such aggregate amount, the Transferee may have included securities owned by
subsidiaries of the Transferee, but only if such subsidiaries are consolidated
with the Transferee in its financial statements prepared in accordance with
generally accepted accounting principles and if the investments of such
subsidiaries are managed under the Transferee's direction. However, such
securities were not included if the Transferee is a majority-owned, consolidated
subsidiary of another enterprise and the Transferee is not itself a reporting
company under the Securities Exchange Act of 1934.

            5. The Transferee acknowledges that it is familiar with Rule 144A
and understands that the Transferor 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 Transferee may be in reliance on Rule 144A.

         ___   ___     Will the Transferee be purchasing the Certificates
         Yes   No      only for the Transferee's own account?

                                     B-1-6
<PAGE>

            6. If the answer to the foregoing question is "no", the Transferee
agrees that, in connection with any purchase of securities sold to the
Transferee for the account of a third party (including any separate account) in
reliance on Rule 144A, the Transferee 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 Transferee agrees that the Transferee
will not purchase securities for a third party unless the Transferee 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 Transferee 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 Transferee's purchase of the Certificates will
constitute a reaffirmation of this certification as of the date of such
purchase. In addition, if the Transferee is a bank or savings and loan as
provided above, the Transferee agrees that it will furnish to such parties
updated annual financial statements promptly after they become available.

Dated:

                                      ______________________________________
                                      Print Name of Transferee

                                      By:___________________________________
                                      Name:
                                      Title:

                                     B-1-7
<PAGE>

                                                          ANNEX 2 TO EXHIBIT B-1

            QUALIFIED INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A

           [For Transferees That Are Registered Investment Companies]

            The undersigned hereby certifies as follows to [name of Transferor]
(the "Transferor") and Wells Fargo Bank Minnesota, National Association, as
Securities Administrator, with respect to the asset backed pass-through
certificates (the "Certificates") described in the Transferee Certificate to
which this certification relates and to which this certification is an Annex:

            1. As indicated below, the undersigned is the President, Chief
Financial Officer or Senior Vice President of the entity purchasing the
Certificates (the "Transferee") or, if the Transferee is a "qualified
institutional buyer" as that term is defined in Rule 144A under the Securities
Act of 1933 ("Rule 144A") because the Transferee is part of a Family of
Investment Companies (as defined below), is such an officer of the investment
adviser (the "Adviser").

            2. In connection with purchases by the Transferee, the Transferee is
a "qualified institutional buyer" as defined in Rule 144A because (i) the
Transferee is an investment company registered under the Investment Company Act
of 1940, and (ii) as marked below, the Transferee alone, or the Transferee'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
Transferee's most recent fiscal year. For purposes of determining the amount of
securities owned by the Transferee or the Transferee's Family of Investment
Companies, the cost of such securities was used.

      ___   The Transferee owned $________________________ in securities (other
            than the excluded securities referred to below) as of the end of the
            Transferee's most recent fiscal year (such amount being calculated
            in accordance with Rule 144A).

      ___   The Transferee 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
            Transferee'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 Transferee or are part of the
Transferee's Family of Investment Companies, (ii) securities

                                     B-1-8
<PAGE>

issued or guaranteed by the U.S. or any instrumentality thereof, (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.

            5. The Transferee is familiar with Rule 144A and understands that
the parties to which this certification is being made are relying and will
continue to rely on the statements made herein because one or more sales to the
Transferee will be in reliance on Rule 144A. In addition, the Transferee will
only purchase for the Transferee's own account.

            6. The undersigned will notify the parties to which this
certification is made of any changes in the information and conclusions herein.
Until such notice, the Transferee's purchase of the Certificates will constitute
a reaffirmation of this certification by the undersigned as of the date of such
purchase.

Dated:

                                       _______________________________________
                                       Print Name of Transferee or Advisor

                                       By:____________________________________

                                       Name:
                                       Title:

                                       IF AN ADVISER:

                                       _______________________________________
                                       Print Name of Transferee

                                     B-1-9
<PAGE>

                    FORM OF TRANSFEREE REPRESENTATION LETTER

            The undersigned hereby certifies on behalf of the purchaser named
below (the "Purchaser") as follows:

                  1. I am an executive officer of the Purchaser.

                  2. The Purchaser is a "qualified institutional buyer", as
            defined in Rule 144A, ("Rule 144A") under the Securities Act of
            1933, as amended.

                  3. As of the date specified below (which is not earlier than
            the last day of the Purchaser's most recent fiscal year), the amount
            of "securities", computed for purposes of Rule 144A, owned and
            invested on a discretionary basis by the Purchaser was in excess of
            $100,000,000.

Name of Purchaser_______________________________________________________________

By: (Signature) ________________________________________________________________

Name of Signatory ______________________________________________________________

Title __________________________________________________________________________

Date of this certificate _______________________________________________________

Date of information provided in paragraph 3 ____________________________________

                                     B-1-10
<PAGE>

                                   EXHIBIT B-2

                    FORM OF TRANSFEROR REPRESENTATION LETTER

                                                  ____________, 20__

Wells Fargo Bank Minnesota, National Association
Sixth and Marquette Avenue
Minneapolis, Minnesota 55479
Attention: Corporate Trust ACE 2003-HS1

            Re:   ACE Securities Corp. Home Equity Loan Trust,
                  Series 2003-HS1 Asset Backed Pass-Through Certificates,
                  Class CE, Class P and Class R Certificates

Ladies and Gentlemen:

            In connection with the transfer by ________________ (the
"Transferor") to __________________________ (the "Transferee") of the captioned
mortgage pass-through certificates (the "Certificates"), the Transferor hereby
certifies as follows:

            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 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,

                                        ____________________________________
                                        (Transferor)

                                        By:_________________________________
                                        Name:
                                        Title:

<PAGE>

                            FORM OF TRANSFEREE LETTER

                                                  _______________, 20__

Wells Fargo Bank Minnesota, National Association
Sixth and Marquette Avenue
Minneapolis, Minnesota 55479
Attention: Corporate Trust ACE 2003-HS1

            Re:   ACE Securities Corp. Home Equity Loan Trust,
                  Series 2003-HS1 Asset Backed Pass-Through Certificates,
                  Class CE, Class P and Class R Certificates

Ladies and Gentlemen:

            In connection with the transfer by ______________________ (the
"Transferor") to __________________________ (the "Transferee") of the captioned
mortgage pass-through certificates (the "Certificates"), the Transferee hereby
certifies as follows:

            1. The Transferee 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
      Depositor 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 Transferee 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.

            3. The Transferee 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 Transferee has been furnished with, and has had an
      opportunity to review (a) a copy of the Pooling and Servicing Agreement
      and (b) such other information concerning the

                                     B-2-2
<PAGE>

      Certificates, the Mortgage Loans and the Depositor as has been requested
      by the Transferee from the Depositor or the Transferor and is relevant to
      the Transferee's decision to purchase the Certificates. The Transferee has
      had any questions arising from such review answered by the Depositor or
      the Transferor to the satisfaction of the Transferee.

            5. The Transferee 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
      1933 Act or any state securities law, or that would require registration
      or qualification pursuant thereto. The Transferee will not sell or
      otherwise transfer any of the Certificates, except in compliance with the
      provisions of the Pooling and Servicing Agreement.

            6. The Transferee: (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 ("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) has provided the Trustee with an opinion of counsel
      on which the Depositor, the Master Servicer, the Securities Administrator,
      the Trustee and the Servicer may rely, acceptable to and in form and
      substance satisfactory to the Trustee 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 Trust Fund, the Trustee, the
      Master Servicer, the Securities Administrator, the Depositor or the
      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 Transferee hereby certifies, represents and
warrants to, and covenants with, the Depositor, the Trustee and the Servicer
that the Transferee will not transfer such Certificates to any Plan or person
unless such Plan or person meets the requirements set forth in either 6(a) or
(b) above.

                                        Very truly yours,

                                        By: ________________________________
                                        Name:
                                        Title:

                                     B-2-3
<PAGE>

                                   EXHIBIT B-3

                        TRANSFER AFFIDAVIT AND AGREEMENT

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

      ___________________________ being duly sworn, deposes, represents and
warrants as follows:

      1.    I am a _____________________ of _______________________________ (the
            "Owner") a corporation duly organized and existing under the laws of
            _________________________, the record owner of ACE Securities Corp.
            Home Equity Loan Trust, Series 2003-HS1, Asset Backed Pass-Through
            Certificates, Series 2003-HS1, Class R Certificates (the "Class R
            Certificates"), on behalf of whom I make this affidavit and
            agreement. Capitalized terms used but not defined herein have the
            respective meanings assigned thereto in the Pooling and Servicing
            Agreement pursuant to which the Class R Certificates were issued.

      2.    The Owner (i) is and will be a "Permitted Transferee" as of
            ____________________. ____ and (ii) is acquiring the Class R
            Certificates for its own account or for the account of another Owner
            from which it has received an affidavit in substantially the same
            form as this affidavit. A "Permitted Transferee" is any person other
            than a "disqualified organization" or a possession of the United
            States. 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 real 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.    The Owner is aware (i) of the tax that would be imposed on transfers
            of the Class R Certificates to disqualified organizations under the
            Internal Revenue Code of 1986 that applies to all transfers of the
            Class R Certificates after March 31, 1988; (ii) that

<PAGE>

            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 non-Permitted Transferee, 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 a Permitted Transferee and, at the time of transfer,
            such person does not have actual knowledge that the affidavit is
            false; and (iv) that each of the Class R Certificates may be a
            "noneconomic residual interest" within the meaning of proposed
            Treasury regulations promulgated under 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 is to impede
            the assessment or collection of tax.

      4.    The Owner is aware of the tax imposed on a "pass-through entity"
            holding the Class R Certificates if, at any time during the taxable
            year of the pass-through entity, a non-Permitted Transferee 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.    The Owner is aware that the Securities Administrator will not
            register the transfer of any Class R Certificate unless the
            transferee, or the transferee's agent, delivers to the Securities
            Administrator, among other things, an affidavit in substantially the
            same form as this affidavit. 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.    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 a
            Permitted Transferee.

      7.    The Owner's taxpayer identification number is ________________.

      8.    The Owner has reviewed the restrictions set forth on the face of the
            Class R Certificates and the provisions of Section 6.02(d) of the
            Pooling and Servicing Agreement under which the Class R Certificates
            were issued (in particular, clauses (iii)(A) and (iii)(B) of Section
            6.02(d) which authorize the Securities Administrator to deliver
            payments to a person other than the Owner and negotiate a mandatory
            sale by the Securities Administrator in the event that the Owner
            holds such Certificate in violation of Section 6.02(d)); and that
            the Owner expressly agrees to be bound by and to comply with such
            restrictions and provisions.

      9.    The Owner is not acquiring and will not transfer the Class R
            Certificates in order to impede the assessment or collection of any
            tax.

      10.   The Owner anticipates that it will, so long as it holds the Class R
            Certificates, have sufficient assets to pay any taxes owed by the
            holder of such Class R Certificates, and

                                     B-3-2
<PAGE>

            hereby represents to and for the benefit of the person from whom it
            acquired the Class R Certificates that the Owner intends to pay
            taxes associated with holding such Class R Certificates as they
            become due, fully understanding that it may incur tax liabilities in
            excess of any cash flows generated by the Class R Certificates.

      11.   The Owner has no present knowledge that it may become insolvent or
            subject to a bankruptcy proceeding for so long as it holds the Class
            R Certificates.

      12.   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.

      13.   The Owner is not acquiring the Class R Certificates with the intent
            to transfer the Class R Certificates to any person or entity that
            will not have sufficient assets to pay any taxes owed by the holder
            of such Class R Certificates, or that may become insolvent or
            subject to a bankruptcy proceeding, for so long as the Class R
            Certificates remain outstanding.

      14.   The Owner will, in connection with any transfer that it makes of the
            Class R Certificates, obtain from its transferee the representations
            required by Section 6.02(d) of the Pooling and Servicing Agreement
            under which the Class R Certificate were issued and will not
            consummate any such transfer if it knows, or knows facts that should
            lead it to believe, that any such representations are false.

      15.   The Owner will, in connection with any transfer that it makes of the
            Class R Certificates, deliver to the Securities Administrator an
            affidavit, which represents and warrants that it is not transferring
            the Class R Certificates to impede the assessment or collection of
            any tax and that it has no actual knowledge that the proposed
            transferee: (i) has insufficient assets to pay any taxes owed by
            such transferee as holder of the Class R Certificates; (ii) may
            become insolvent or subject to a bankruptcy proceeding for so long
            as the Class R Certificates remains outstanding; and (iii) is not a
            "Permitted Transferee".

      16.   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 may be included 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.

      17.   The Owner of the Class R Certificate, hereby agrees that in the
            event that the Trust Fund created by the Pooling and Servicing
            Agreement is terminated pursuant to Section 10.01 thereof, the
            undersigned shall assign and transfer to the Holders of the Class CE
            and the Class P Certificates any amounts in excess of par received
            in connection with such termination. Accordingly, in the event of
            such termination, the Securities Administrator is hereby authorized
            to withhold any such amounts in excess of par and to pay such
            amounts

                                     B-3-3
<PAGE>

            directly to the Holders of the Class CE and the Class P
            Certificates. This agreement shall bind and be enforceable against
            any successor, transferee or assigned of the undersigned in the
            Class R Certificate. In connection with any transfer of the Class R
            Certificate, the Owner shall obtain an agreement substantially
            similar to this clause from any subsequent owner.

                                     B-3-4
<PAGE>

            IN WITNESS WHEREOF, the Owner has caused this instrument to be
executed on its behalf, pursuant to the authority of its Board of Directors, by
its [Vice] President, attested by its [Assistant] Secretary, this ____ day of
_________________, ____.

                                           [OWNER]

                                           By:_________________________________
                                           Name:
                                           Title:         [Vice] President

ATTEST:

By:__________________________________
Name:
Title:      [Assistant] Secretary

            Personally appeared before me the above-named __________________,
known or proved to me to be the same person who executed the foregoing
instrument and to be a [Vice] President of the Owner, and acknowledged to me
that [he/she] executed the same as [his/her] free act and deed and the free act
and deed of the Owner.

            Subscribed and sworn before me this ______________ day of
__________, ____.

                                          __________________________________
                                                     Notary Public

                                          County of___________________
                                          State of____________________

                                          My Commission expires:

                                     B-3-5
<PAGE>

                          FORM OF TRANSFEROR AFFIDAVIT

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

      _________________________, being duly sworn, deposes, represents and
warrants as follows:

      1. I am a ____________________ of _________________________ (the "Owner"),
a corporation duly organized and existing under the laws of _____________, on
behalf of whom I make this affidavit.

      2. The Owner is not transferring the Class R Certificates (the "Residual
Certificates") to impede the assessment or collection of any tax.

      3. The Owner has no actual knowledge that the Person that is the proposed
transferee (the "Purchaser") of the Residual Certificates: (i) has insufficient
assets to pay any taxes owed by such proposed transferee as holder of the
Residual Certificates; (ii) may become insolvent or subject to a bankruptcy
proceeding for so long as the Residual Certificates remain outstanding and (iii)
is not a Permitted Transferee.

      4. The Owner understands that the Purchaser has delivered to the Trustee
or a transfer affidavit and agreement in the form attached to the Pooling and
Servicing Agreement as Exhibit B-2. The Owner does not know or believe that any
representation contained therein is false.

      5. At the time of transfer, the Owner has 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 Owner has determined that the Purchaser has historically paid
its debts as they became 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 Owner understands that the transfer of a Residual Certificate may
not be respected for United States income tax purposes (and the Owner may
continue to be liable for United States income taxes associated therewith)
unless the Owner has conducted such an investigation.

      6. Capitalized terms not otherwise defined herein shall have the meanings
ascribed to them in the Pooling and Servicing Agreement.

                                     B-3-6
<PAGE>

      IN WITNESS WHEREOF, the Owner has caused this instrument to be executed on
its behalf, pursuant to the authority of its Board of Directors, by its [Vice]
President, attested by its [Assistant] Secretary, this ____ day of
________________, ____.

                                            [OWNER]

                                            By:_____________________________
                                            Name:
                                            Title:      [Vice] President

ATTEST:

By:__________________________________
Name:
Title.     [Assistant] Secretary

            Personally appeared before me the above-named _________________,
known or proved to me to be the same person who executed the foregoing
instrument and to be a [Vice] President of the Owner, and acknowledged to me
that [he/she] executed the same as [his/her] free act and deed and the free act
and deed of the Owner.

      Subscribed and sworn before me this ______ day of _____________, ____.

                                          __________________________________
                                          Notary Public

                                          County of___________________
                                          State of____________________

                                          My Commission expires:

<PAGE>

                                    EXHIBIT C

                         FORM OF SERVICER CERTIFICATION

Re:   ACE Securities Corp. Home Equity Loan Trust, Series 2003-HS1
      Asset Backed Pass-Through Certificates

      I, [identify the certifying individual], certify to ACE Securities Corp.
(the "Depositor"), Bank One National Association (the "Trustee") and Wells Fargo
Bank Minnesota, National Association (the "Master Servicer"), and their
respective officers, directors and affiliates, and with the knowledge and intent
that they will rely upon this certification, that:

      1. Based on my knowledge, the information in the Annual Statement of
Compliance, the Annual Independent Public Accountant's Servicing Report and all
servicing reports, officer's certificates and other information relating to the
servicing of the Mortgage Loans submitted to the Master Servicer taken as a
whole, does not contain any untrue statement of a material fact or omit to state
a material fact constituting information required to be provided by the Servicer
under the Pooling and Servicing Agreement necessary to make the statements made,
in light of the circumstances under which such statements were made, not
misleading as of the date of this certification.

      2. Based on my knowledge, the servicing information required to be
provided to the Master Servicer by the Servicer under the Pooling and Servicing
Agreement has been provided to the Master Servicer.

      3. I am responsible for reviewing the activities performed by the Servicer
under the Pooling and Servicing Agreement and based upon my knowledge and the
review required by the Pooling and Servicing Agreement, and except as disclosed
in the Annual Statement of Compliance or the Annual Independent Public
Accountant's Servicing Report submitted to the Master Servicer, the Servicer has
fulfilled its obligations under the Pooling and Servicing Agreement; and

      4. I have disclosed to the Master Servicer all significant deficiencies
relating to the Servicer's compliance with the minimum servicing standards in
accordance with a review conducted in compliance with the Uniform Single
Attestation Program for Mortgage Bankers or similar standard as set forth in the
Pooling and Servicing Agreement.

                                       C-1
<PAGE>

      Capitalized terms used and not otherwise defined herein have the meanings
assigned thereto in the Pooling and Servicing Agreement, dated as of August 1,
2003, among ACE Securities Corp., The Provident Bank, Wells Fargo Bank
Minnesota, National Association and Bank One National Association.

Date: _________________________

_______________________________
[Signature]
[Title]

                                       C-2

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