Document:

Exhibit 4.1

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                    WELLS FARGO ASSET SECURITIES CORPORATION

                                   (Depositor)

                                       and

                             WELLS FARGO BANK, N.A.

                                (Master Servicer)

                                       and

                       HSBC BANK USA, NATIONAL ASSOCIATION

                                    (Trustee)

                         POOLING AND SERVICING AGREEMENT

                          Dated as of November 29, 2007

                                 $435,434,104.00

                       Mortgage Pass-Through Certificates
                                 Series 2007-AR8

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<PAGE>

                                TABLE OF CONTENTS

                                    ARTICLE I

                                   DEFINITIONS

Section 1.01  Definitions..............................................
Section 1.02  Acts of Holders..........................................
Section 1.03  Effect of Headings and Table of Contents.................
Section 1.04  Benefits of Agreement....................................

                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS;
                      ORIGINAL ISSUANCE OF THE CERTIFICATES

Section 2.01  Conveyance of Mortgage Loans.............................
Section 2.02  Acceptance by Custodian..................................
Section 2.03  Representations and Warranties of the Master Servicer and
               the Depositor...........................................
Section 2.04  Execution and Delivery of Certificates...................
Section 2.05  Designation of Certificates; Designation of Startup Day
               and Latest Possible Maturity Date.......................

                                   ARTICLE III

                  ADMINISTRATION OF THE TRUST ESTATE; SERVICING
                              OF THE MORTGAGE LOANS

Section 3.01  Certificate Account......................................
Section 3.02  Permitted Withdrawals from the Certificate Account.......
Section 3.03  Advances by Master Servicer and Trustee..................
Section 3.04  Custodian to Cooperate;
               Release of Owner Mortgage Loan Files and Retained
               Mortgage Loan Files.....................................

Section 3.05  Annual Compliance Statements.............................
Section 3.06  Title, Management and Disposition of Any REO Mortgage
               Loan....................................................
Section 3.07  Amendments to Servicing Agreements,
               Modification of Standard Provisions.....................
Section 3.08  Oversight of Servicing...................................
Section 3.09  Termination and Substitution of Servicing Agreements.....
Section 3.10  Application of Net Liquidation Proceeds..................
Section 3.11  Assessment of Servicing Compliance; Registered Public
               Accounting Firm Attestation Reports.....................
Section 3.12  Exchange Act Reports.....................................

                                   ARTICLE IV

                    DISTRIBUTIONS IN RESPECT OF CERTIFICATES;
                         PAYMENTS TO CERTIFICATEHOLDERS;
                             STATEMENTS AND REPORTS

Section 4.01  Distributions............................................
Section 4.02  Allocation of Realized Losses............................
Section 4.03  Paying Agent.............................................
Section 4.04  Statements to Certificateholders; Reports to the
               Trustee and the Depositor...............................
Section 4.05  Reserved.................................................
Section 4.06  Calculation of Amounts; Binding Effect of
               Interpretations and Actions of Master Servicer..........

                                    ARTICLE V

                                THE CERTIFICATES

Section 5.01  The Certificates.........................................
Section 5.02  Registration of Certificates.............................
Section 5.03  Mutilated, Destroyed, Lost or Stolen Certificates........
Section 5.04  Persons Deemed Owners....................................
Section 5.05  Access to List of Certificateholders' Names and
               Addresses...............................................
Section 5.06  Maintenance of Office or Agency..........................
Section 5.07  Definitive Certificates..................................
Section 5.08  Notices to Clearing Agency...............................

                                   ARTICLE VI

                      THE DEPOSITOR AND THE MASTER SERVICER

Section 6.01  Liability of the Depositor and the Master Servicer.......
Section 6.02  Merger or Consolidation of the Depositor or the
               Master Servicer.........................................
Section 6.03  Limitation on Liability of the Depositor, the
               Master Servicer and Others..............................
Section 6.04  Resignation of the Master Servicer.......................
Section 6.05  Compensation to the Master Servicer......................
Section 6.06  Assignment or Delegation of Duties by Master Servicer....
Section 6.07  Indemnification of Trustee and Depositor by
               Master Servicer.........................................
Section 6.08  Master Servicer Errors and Omissions Policy..............

                                   ARTICLE VII

                                     DEFAULT

Section 7.01  Events of Default........................................
Section 7.02  Other Remedies of Trustee................................
Section 7.03  Directions by Certificateholders and
               Duties of Trustee During Event of Default...............
Section 7.04  Action upon Certain Failures of the
               Master Servicer and upon Event of Default...............
Section 7.05  Trustee to Act; Appointment of Successor.................
Section 7.06  Notification to Certificateholders.......................

                                  ARTICLE VIII

                             CONCERNING THE TRUSTEE

Section 8.01  Duties of Trustee........................................
Section 8.02  Certain Matters Affecting the Trustee....................
Section 8.03  Trustee Not Required to Make Investigation...............
Section 8.04  Trustee Not Liable for Certificates or Mortgage Loans....
Section 8.05  Trustee May Own Certificates.............................
Section 8.06  The Master Servicer to Pay Fees; Limitation on
               Liability...............................................
Section 8.07  Eligibility Requirements.................................
Section 8.08  Resignation and Removal..................................
Section 8.09  Successor................................................
Section 8.10  Merger or Consolidation..................................
Section 8.11  Authenticating Agent.....................................
Section 8.12  Separate Trustees and Co-Trustees........................
Section 8.13  Tax Matters; Compliance with REMIC Provisions............
Section 8.14  Monthly Advances.........................................
Section 8.15  Indemnification of the Master Servicer and Depositor
               by the Trustee..........................................
Section 8.16  Trustee Errors and Omissions Policy......................

                                   ARTICLE IX

                                   TERMINATION

Section 9.01  Termination upon Purchase by the
               Depositor or Liquidation of All Mortgage Loans..........
Section 9.02  Additional Termination Requirements......................

                                    ARTICLE X

                            MISCELLANEOUS PROVISIONS

Section 10.01 Amendment................................................
Section 10.02 Recordation of Agreement.................................
Section 10.03 Limitation on Rights of Certificateholders...............
Section 10.04 Governing Law; Jurisdiction..............................
Section 10.05 Notices..................................................
Section 10.06 Severability of Provisions...............................
Section 10.07 Special Notices to Rating Agencies.......................
Section 10.08 Covenant of Depositor....................................
Section 10.09 Recharacterization.......................................
Section 10.10 Regulation AB Compliance; Intent of Parties;
               Reasonableness..........................................

                                   ARTICLE XI

                             TERMS FOR CERTIFICATES

Section 11.01 Cut-Off Date.............................................
Section 11.02 Cut-Off Date Aggregate Principal Balance.................
Section 11.03 Original Class A Percentage..............................
Section 11.04 Original Principal Balances of the Classes of Class A
               Certificates............................................
Section 11.05 Original Subordinated Percentage.........................
Section 11.06 Original Class B Principal Balance.......................
Section 11.07 Original Principal Balances of the Classes of
               Class B Certificates....................................
Section 11.08 Original Class B-1 Fractional Interest...................
Section 11.09 Original Class B-2 Fractional Interest...................
Section 11.10 Original Class B-3 Fractional Interest...................
Section 11.11 Original Class B-4 Fractional Interest...................
Section 11.12 Original Class B-5 Fractional Interest...................
Section 11.13 Original Class B-1 Percentage............................
Section 11.14 Original Class B-2 Percentage............................
Section 11.15 Original Class B-3 Percentage............................
Section 11.16 Original Class B-4 Percentage............................
Section 11.17 Original Class B-5 Percentage............................
Section 11.18 Original Class B-6 Percentage............................
Section 11.19 Closing Date.............................................
Section 11.20 Right to Purchase........................................
Section 11.21 Single Certificate.......................................
Section 11.22 Servicing Fee Rate.......................................
Section 11.23 Master Servicing Fee Rate................................

SCHEDULE I        Applicable Unscheduled Principal Receipt Period

<PAGE>

                                    EXHIBITS
                                    --------

EXHIBIT A-1   -  Form of Face of Class A-1 Certificate
EXHIBIT A-R   -  Form of Face of Class A-R Certificate
EXHIBIT B-1   -  Form of Face of Class B-1 Certificate
EXHIBIT B-2   -  Form of Face of Class B-2 Certificate
EXHIBIT B-3   -  Form of Face of Class B-3 Certificate
EXHIBIT B-4   -  Form of Face of Class B-4 Certificate
EXHIBIT B-5   -  Form of Face of Class B-5 Certificate
EXHIBIT B-6   -  Form of Face of Class B-6 Certificate
EXHIBIT C     -  Form of Reverse of Series 2007-AR8 Certificates
EXHIBIT D     -  Reserved
EXHIBIT E     -  Custodial Agreement
EXHIBIT F     -  Addresses for Requesting Mortgage Loan Schedule
EXHIBIT G     -  Request for Release of Documents
EXHIBIT H     -  Affidavit Pursuant to Section 860E(e)(4) of the Internal
                 Revenue Code of 1986, as amended, and for Non-ERISA Investors
EXHIBIT I     -  Letter from Transferor of Residual Certificate
EXHIBIT J     -  Transferee's Letter (Class [B-4] [B-5] [B-6] Certificates)
EXHIBIT K     -  List of Recordation States
EXHIBIT L     -  Servicing Agreements
EXHIBIT M     -  Form of Special Servicing Agreement
EXHIBIT N     -  Form of Initial Certification of the Custodian
EXHIBIT O     -  Form of Final Certification of the Custodian
EXHIBIT P     -  Form of Sarbanes Oxley Certification
EXHIBIT Q     -  Schedule of Pledged Asset Mortgage Loans
EXHIBIT R     -  Servicing Criteria to be Addressed in Assessment of Compliance
EXHIBIT S     -  Additional Form 10-D Disclosure
EXHIBIT T     -  Additional Form 10-K Disclosure
EXHIBIT U     -  Form 8-K Disclosure Information
EXHIBIT V     -  Additional Disclosure Notification

<PAGE>

            This Pooling and Servicing Agreement, dated as of November 29, 2007
executed by WELLS FARGO ASSET SECURITIES CORPORATION, as Depositor, WELLS FARGO
BANK, N.A., as Master Servicer, and HSBC BANK USA, NATIONAL ASSOCIATION, as
Trustee.

                          W I T N E S S E T H  T H A T:
                          -------------------  --------

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

                                    ARTICLE I

                                   DEFINITIONS

            Section 1.01 Definitions.

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

            1933 Act: The Securities Act of 1933, as amended.

            Accepted Master Servicing Practices: Accepted Master Servicing
Practices shall consist of the customary and usual master servicing practices of
prudent master servicing institutions which master service mortgage loans of the
same type as the Mortgage Loans in the jurisdictions in which the related
Mortgaged Properties are located, regardless of the date upon which the related
Mortgage Loans were originated.

            Additional Form 10-D Disclosure: As defined in Section 3.12(a).

            Additional Form 10-K Disclosure: As defined in Section 3.12(b).

            Additional Master Servicer: As defined in Section 6.06(b).

            Adjusted Pool Amount: With respect to any Distribution Date, the
Cut-Off Date Aggregate Principal Balance of the Mortgage Loans minus the sum of
(i) all amounts in respect of principal received in respect of the Mortgage
Loans (including, without limitation, amounts received as Monthly Payments,
Periodic Advances, Unscheduled Principal Receipts and Substitution Principal
Amounts) and distributed to Holders of the Certificates on such Distribution
Date and all prior Distribution Dates, (ii) the principal portion of all
Liquidated Loan Losses incurred on such Mortgage Loans for which the Liquidation
Proceeds were received from the Cut-Off Date through the end of the Applicable
Unscheduled Principal Receipt Period with respect to Full Unscheduled Principal
Receipts for such Distribution Date and (iii) the principal portion of all
Bankruptcy Losses (other than Debt Service Reductions) incurred on the Mortgage
Loans from the Cut-Off Date through the end of the period corresponding to the
Applicable Unscheduled Principal Receipt Period with respect to Full Unscheduled
Principal Receipts for such Distribution Date.

            Adjusted Principal Balance: As to any Distribution Date and any
Class of Class B Certificates, the greater of (A) zero and (B) (i) the Principal
Balance of such Class with respect to such Distribution Date minus (ii) the
Adjustment Amount for such Distribution Date less the Principal Balances for any
Classes of Class B Certificates with higher numerical designations.

            Adjustment Amount: For any Distribution Date, the difference between
(A) the sum of the Class A Principal Balance and the Class B Principal Balance
as of the related Determination Date and (B) the sum of (i) the sum of the Class
A Principal Balance and the Class B Principal Balance as of the Determination
Date succeeding such Distribution Date and (ii) the aggregate amount that would
have been distributed to all Classes as principal in accordance with Section
4.01(a) for such Distribution Date without regard to the provisos in the
definitions of Class B-1 Optimal Principal Amount, Class B-2 Optimal Principal
Amount, Class B-3 Optimal Principal Amount, Class B-4 Optimal Principal Amount,
Class B-5 Optimal Principal Amount and Class B-6 Optimal Principal Amount.

            Adjustment Date: As to each Mortgage Loan, the Due Date on which
date an adjustment to the Mortgage Interest Rate of such Mortgage Loan becomes
effective under the related Mortgage Note, which Due Date is the date set forth
in the Mortgage Loan Schedule as the first Adjustment Date and each subsequent
anniversary thereof.

            Aggregate Class A Distribution Amount: As to any Distribution Date,
the aggregate amount distributable to the Classes of Class A Certificates
pursuant to Paragraphs first, second and third of Section 4.01(a) on such
Distribution Date.

            Aggregate Class A Unpaid Interest Shortfall: As to any Distribution
Date, an amount equal to the sum of the Class A Unpaid Interest Shortfalls for
the Class A Certificates.

            Aggregate Principal Balance: As of any Determination Date, the sum
of the Class A Principal Balance and the Class B Principal Balance as of such
date.

            Agreement: This Pooling and Servicing Agreement and all amendments
and supplements hereto.

            Applicable Unscheduled Principal Receipt Period: With respect to the
Mortgage Loans serviced by each Servicer and each of the Full Unscheduled
Principal Receipts and Partial Unscheduled Principal Receipts, the Unscheduled
Principal Receipt Period specified on Schedule I hereto, as amended by the
Master Servicer pursuant to Section 10.01(b) hereof.

            Authenticating Agent: Any authenticating agent appointed by the
Trustee pursuant to Section 8.11. Initially, the Master Servicer shall be the
Authenticating Agent for the Certificates.

            Available Master Servicer Compensation: With respect to any
Distribution Date, the sum of (a) the Master Servicing Fee for such Distribution
Date, (b) interest earned through the business day preceding the applicable
Distribution Date on any Prepayments in Full remitted to the Master Servicer and
(c) the aggregate amount of Month End Interest remitted by the Servicers to the
Master Servicer pursuant to the related Servicing Agreements.

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

            Bankruptcy Loss: With respect to any Mortgage Loan, a Deficient
Valuation or Debt Service Reduction; provided, however, that a Bankruptcy Loss
shall not be deemed a Bankruptcy Loss hereunder so long as the applicable
Servicer has notified the Master Servicer and the Trustee in writing that such
Servicer is diligently pursuing any remedies that may exist in connection with
the representations and warranties made regarding the related Mortgage Loan and
either (A) the related Mortgage Loan is not in default with regard to payments
due thereunder or (B) delinquent payments of principal and interest under the
related Mortgage Loan and any premiums on any applicable primary hazard
insurance policy and any related escrow payments in respect of such Mortgage
Loan are being advanced on a current basis by such Servicer without giving
effect to any Debt Service Reduction.

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

            Book-Entry Certificate: Any one of the Class A-1 and Class B
Certificates, beneficial ownership and transfers of which shall be evidenced by,
and made through, book entries by the Clearing Agency as described in Section
5.01(b).

            Business Day: Any day other than (i) a Saturday or a Sunday, or (ii)
a legal holiday in the City of New York, State of Iowa, State of Maryland or
State of Minnesota or (iii) a day on which banking institutions in the City of
New York, or the State of Iowa, State of Maryland or State of Minnesota are
authorized or obligated by law or executive order to be closed.

            Capitalized Advance Amount: As defined in the related Servicing
Agreement.

            Certificate: Any one of the Class A Certificates or Class B
Certificates.

            Certificate Account: The separate trust account established and
maintained by the Master Servicer pursuant to Section 3.01 which shall be
entitled "Certificate Account, Wells Fargo Bank, N.A., as Master Servicer on
behalf of the Trustee, in trust for the Holders of the Certificates of the Wells
Fargo Mortgage Backed Securities 2007-AR8 Trust." The Certificate Account shall
be an Eligible Account.

            Certificate Custodian: Initially, Wells Fargo Bank; thereafter any
other Certificate Custodian acceptable to The Depository Trust Company and
selected by the Trustee.

            Certificate Register and Certificate Registrar: Respectively, the
register maintained pursuant to and the registrar provided for in Section 5.02.
Initially the Certificate Registrar shall be the Master Servicer.

            Certificateholder or Holder: The Person in whose name a Certificate
is registered in the Certificate Register, except that, solely for the purposes
of the taking of any action under Articles VII or VIII, any Certificate
registered in the name of the Master Servicer, a Servicer or any affiliate
thereof shall be deemed not to be outstanding and the Voting Interest evidenced
thereby shall not be taken into account in determining whether the requisite
percentage of Certificates necessary to effect any such action has been
obtained.

            Class: All certificates whose form is identical except for
variations in the Percentage Interest evidenced thereby.

            Class A Certificate: Any of the Class A-1 or Class A-R Certificates.

            Class A Certificateholder: The registered holder of a Class A
Certificate.

            Class A Distribution Amount: As to any Distribution Date and any
Class of Class A Certificates, the amount distributable to such Class of Class A
Certificates pursuant to Paragraphs first, second and third of Section 4.01(a).

            Class A Interest Accrual Amount: As to any Distribution Date, the
sum of the Interest Accrual Amounts for the Class A Certificates with respect to
such Distribution Date.

            Class A Interest Percentage: As to any Distribution Date and any
Class of Class A Certificates, the percentage calculated by dividing the
Interest Accrual Amount of such Class (determined without regard to clause (ii)
of the definition thereof) by the Class A Interest Accrual Amount (determined
without regard to clause (ii) of the definition of each Interest Accrual
Amount).

            Class A Interest Shortfall Amount: As to any Distribution Date and
any Class of Class A Certificates, any amount by which the Interest Accrual
Amount of such Class with respect to such Distribution Date exceeds the amount
distributed in respect of such Class on such Distribution Date pursuant to
Paragraph first of Section 4.01(a).

            Class A Loss Denominator: As to any Determination Date, an amount
equal to the Class A Principal Balance.

            Class A Loss Percentage: As to any Determination Date and any Class
of Class A Certificates, the percentage calculated by dividing the Principal
Balance of such Class by the Class A Loss Denominator (determined without regard
to any such Principal Balance of any Class of Class A Certificates not then
outstanding), in each case determined as of the preceding Determination Date.

            Class A Optimal Principal Amount: As to any Distribution Date and
each Outstanding Mortgage Loan, an amount equal to the sum of:

(I) the sum of:

            (i) the Class A Percentage of the principal portion of the Monthly
      Payment due on the Due Date occurring in the month of such Distribution
      Date on such Mortgage Loan;

            (ii) the Class A Prepayment Percentage of all Unscheduled Principal
      Receipts (other than Recoveries) that were received by a Servicer with
      respect to such Mortgage Loan during the Applicable Unscheduled Principal
      Receipt Period relating to such Distribution Date for each applicable type
      of Unscheduled Principal Receipt;

            (iii) the Class A Prepayment Percentage of the Scheduled Principal
      Balance of such Mortgage Loan which, during the one month period ending on
      the day preceding the Determination Date for such Distribution Date, was
      repurchased by the Depositor pursuant to Section 2.02, 2.03 or 3.08; and

            (iv) the Class A Percentage of the Substitution Principal Amount
      with respect to each Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class A Prepayment Percentage of the Recovery for such Distribution
Date.

            Class A Pass-Through Rate: As to any Distribution Date and the Class
A-1 or Class A-R Certificate, the Class A Pass-Through Rate will be a per annum
rate equal to the Net WAC for such Distribution Date.

            Class A Percentage: As to any Distribution Date occurring on or
prior to the Subordination Depletion Date, the lesser of (i) 100% and (ii) the
percentage obtained by dividing the Class A Principal Balance (determined as of
the Determination Date preceding such Distribution Date) by the Pool Balance. As
to any Distribution Date occurring subsequent to the Subordination Depletion
Date, 100% or such lesser percentage which will cause the Class A Principal
Balance to decline to zero following the distribution made on such Distribution
Date.

            Class A Prepayment Percentage: As to any Distribution Date to and
including the Distribution Date in November 2014, 100%. As to any Distribution
Date subsequent to November 2014 to and including the Distribution Date in
November 2015, the Class A Percentage as of such Distribution Date plus 70% of
the Subordinated Percentage as of such Distribution Date. As to any Distribution
Date subsequent to November 2015 to and including the Distribution Date in
November 2016, the Class A Percentage as of such Distribution Date plus 60% of
the Subordinated Percentage as of such Distribution Date. As to any Distribution
Date subsequent to November 2016 to and including the Distribution Date in
November 2017, the Class A Percentage as of such Distribution Date plus 40% of
the Subordinated Percentage as of such Distribution Date. As to any Distribution
Date subsequent to November 2017 to and including the Distribution Date in
November 2018, the Class A Percentage as of such Distribution Date plus 20% of
the Subordinated Percentage as of such Distribution Date. As to any Distribution
Date subsequent to November 2018, the Class A Percentage as of such Distribution
Date. The foregoing is subject to the following: (i) if the aggregate
distribution to the Class A Certificates on any Distribution Date of the Class A
Prepayment Percentage provided above of Unscheduled Principal Receipts
distributable on such Distribution Date would reduce the Class A Principal
Balance below zero, the Class A Prepayment Percentage for such Distribution Date
shall be the percentage necessary to bring the Class A Principal Balance to zero
and thereafter the Class A Prepayment Percentage shall be zero and (ii) if the
Class A Percentage as of any Distribution Date is greater than the Original
Class A Percentage, the Class A Prepayment Percentage for such Distribution Date
shall be 100%. Notwithstanding the foregoing, with respect to any Distribution
Date on which the following criteria are not met, the reduction of the Class A
Prepayment Percentage described in the second through sixth sentences of this
definition of Class A Prepayment Percentage shall not be applicable with respect
to such Distribution Date. In such event, the Class A Prepayment Percentage for
such Distribution Date will be determined in accordance with the applicable
provision, as set forth in the first through fifth sentences above, which was
actually used to determine the Class A Prepayment Percentage for the
Distribution Date occurring in the November preceding such Distribution Date (it
being understood that for the purposes of the determination of the Class A
Prepayment Percentage for the current Distribution Date, the current Class A
Percentage and Subordinated Percentage shall be utilized). In addition, if on
any Distribution Date, prior to giving effect to any distributions on such
Distribution Date, (i) the Subordinated Percentage is equal to or greater than
twice the Subordinated Percentage as of the Cut-Off Date, (ii) the average
outstanding principal balance on such Distribution Date and for the preceding
five Distribution Dates of the Mortgage Loans that were delinquent 60 days or
more (including for this purpose any Mortgage Loans in foreclosure, any REO
Mortgage Loans and any Mortgage Loans that were the subject of a Servicer
Modification within twelve months prior to such Distribution Date) does not
exceed 50% of the Class B Principal Balance and (iii)(A) prior to the
Distribution Date in December 2010, cumulative Realized Losses on the Mortgage
Loans do not exceed 20% of the Original Class B Principal Balance, then the
Class A Prepayment Percentage for such Distribution Date will equal the Class A
Percentage for such Distribution Date plus 50% of the Subordinated Percentage
for such Distribution Date or (B) on or after the Distribution Date in December
2010, cumulative Realized Losses on the Mortgage Loans do not exceed 30% of the
Original Class B Principal Balance, then the Class A Prepayment Percentage for
such Distribution Date will equal the Class A Percentage for such Distribution
Date. No reduction in the Class A Prepayment Percentage referred to in the
second through sixth sentences hereof shall be applicable, with respect to any
Distribution Date if (a) the average outstanding principal balance on such
Distribution Date and for the preceding five Distribution Dates on the Mortgage
Loans that were delinquent 60 days or more (including for this purpose any
Mortgage Loans in foreclosure, any REO Mortgage Loans and any Mortgage Loans
that were the subject of a Servicer Modification within twelve months prior to
such Distribution Date) were greater than or equal to 50% of the current Class B
Principal Balance or (b) cumulative Realized Losses on the Mortgage Loans exceed
(1) 30% of the Original Class B Principal Balance if such Distribution Date
occurs between and including December 2014 and November 2015, (2) 35% of the
Original Class B Principal Balance if such Distribution Date occurs between and
including December 2015 and November 2016, (3) 40% of the Original Class B
Principal Balance if such Distribution Date occurs between and including
December 2016 and November 2017, (4) 45% of the Original Class B Principal
Balance if such Distribution Date occurs between and including December 2017 and
November 2018, and (5) 50% of the Original Class B Principal Balance, if such
Distribution Date occurs during or after December 2018. With respect to any
Distribution Date on which the Class A Prepayment Percentage is reduced below
the Class A Prepayment Percentage for the prior Distribution Date, the Master
Servicer shall certify to the Trustee, based upon information provided by each
Servicer as to the Mortgage Loans serviced by it that the criteria set forth in
the preceding sentence are met.

            Class A Principal Balance: As of any date, an amount equal to the
sum of the Principal Balances for the Class A-1 and Class A-R Certificates.

            Class A Principal Distribution Amount: As to any Distribution Date,
the aggregate amount distributed in respect of the Class A Certificates pursuant
to Paragraph third of Section 4.01(a).

            Class A Unpaid Interest Shortfall: As to any Distribution Date and
any Class of Class A Certificates, the amount, if any, by which the aggregate of
the Class A Interest Shortfall Amounts for such Class for prior Distribution
Dates is in excess of the amounts distributed in respect of such Class on prior
Distribution Dates pursuant to Paragraph second of Section 4.01(a).

            Class A-1 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit A-1 and Exhibit C hereto.

            Class A-1 Certificateholder: The registered holder of a Class A-1
Certificate.

            Class A-R Certificate: The Certificate executed by the Paying Agent
and countersigned by the Authenticating Agent in substantially the form set
forth in Exhibit A-R and Exhibit C hereto.

            Class A-R Certificateholder: The registered holder of the Class A-R
Certificate.

            Class B Certificate: Any one of the Class B-1 Certificates, Class
B-2 Certificates, Class B-3 Certificates, Class B-4 Certificates, Class B-5
Certificates or Class B-6 Certificates.

            Class B Certificateholder: The registered holder of a Class B
Certificate.

            Class B Distribution Amount: Any of the Class B-1 Distribution
Amount, Class B-2 Distribution Amount, Class B-3 Distribution Amount, Class B-4
Distribution Amount, Class B-5 Distribution Amount or Class B-6 Distribution
Amount.

            Class B Interest Accrual Amount: With respect to any Distribution
Date, the sum of the Interest Accrual Amounts for the Classes of Class B
Certificates with respect to such Distribution Date.

            Class B Interest Percentage: With respect to any Distribution Date
and any Class of Class B Certificates, the percentage calculated by dividing the
Interest Accrual Amount of such Class (determined without regard to clause (ii)
of the definition thereof) by the Class B Interest Accrual Amount (determined
without regard to clause (ii) of the definition of each Interest Accrual
Amount).

            Class B Interest Shortfall Amount: Any of the Class B-1 Interest
Shortfall Amount, Class B-2 Interest Shortfall Amount, Class B-3 Interest
Shortfall Amount, Class B-4 Interest Shortfall Amount, Class B-5 Interest
Shortfall Amount or Class B-6 Interest Shortfall Amount.

            Class B Loss Percentage: With respect to any Determination Date and
any Class of Class B Certificates then outstanding, the percentage calculated by
dividing the Principal Balance of such Class by the Class B Principal Balance
(determined without regard to any Principal Balance of any Class of Class B
Certificates not then outstanding), in each case determined as of the preceding
Determination Date.

            Class B Optimal Principal Amount: Any of the Class B-1 Optimal
Principal Amount, Class B-2 Optimal Principal Amount, Class B-3 Optimal
Principal Amount, Class B-4 Optimal Principal Amount, Class B-5 Optimal
Principal Amount or Class B-6 Optimal Principal Amount.

            Class B Pass-Through Rate: As to any Distribution Date, the Class B
Pass-Through Rate will be a per annum rate equal to the Net WAC for such
Distribution Date.

            Class B Percentage: Any one of the Class B-1 Percentage, Class B-2
Percentage, Class B-3 Percentage, Class B-4 Percentage, Class B-5 Percentage or
Class B-6 Percentage.

            Class B Prepayment Percentage: Any of the Class B-1 Prepayment
Percentage, Class B-2 Prepayment Percentage, Class B-3 Prepayment Percentage,
Class B-4 Prepayment Percentage, Class B-5 Prepayment Percentage or Class B-6
Prepayment Percentage.

            Class B Principal Balance: As of any date, an amount equal to the
sum of the Class B-1 Principal Balance, Class B-2 Principal Balance, Class B-3
Principal Balance, Class B-4 Principal Balance, Class B-5 Principal Balance and
Class B-6 Principal Balance.

            Class B Unpaid Interest Shortfall: Any of the Class B-1 Unpaid
Interest Shortfall, Class B-2 Unpaid Interest Shortfall, Class B-3 Unpaid
Interest Shortfall, Class B-4 Unpaid Interest Shortfall, Class B-5 Unpaid
Interest Shortfall or Class B-6 Unpaid Interest Shortfall.

            Class B-1 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit B-1 and Exhibit C hereto.

            Class B-1 Certificateholder: The registered holder of a Class B-1
Certificate.

            Class B-1 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class B-1 Certificates pursuant to
Paragraphs fourth, fifth and sixth of Section 4.01(a).

            Class B-1 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class B-1 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class B-1 Certificates on such Distribution Date pursuant to Paragraph
fourth of Section 4.01(a).

            Class B-1 Optimal Principal Amount: As to any Distribution Date and
each Outstanding Mortgage Loan, an amount equal to the sum of

(I) the sum of:

            (i) the Class B-1 Percentage of the principal portion of the Monthly
      Payment due on the Due Date occurring in the month of such Distribution
      Date on such Mortgage Loan;

            (ii) the Class B-1 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class B-1 Prepayment Percentage of the Scheduled Principal
      Balance of such Mortgage Loan which, during the one month period ending on
      the day preceding the Determination Date for such Distribution Date, was
      repurchased by the Depositor pursuant to Section 2.02, 2.03 or 3.08; and

            (iv) the Class B-1 Percentage of the Substitution Principal Amount
      with respect to each Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class B-1 Prepayment Percentage of the Recovery for such Distribution
Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class B-1 Optimal Principal Amount
will equal the lesser of (A) the Class B-1 Optimal Principal Amount calculated
as described in the preceding provisions and (B) the Adjusted Principal Balance
for the Class B-1 Certificates.

            Class B-1 Percentage: As to any Distribution Date, the percentage
calculated by multiplying the Subordinated Percentage by a fraction, the
numerator of which is the Class B-1 Principal Balance (determined as of the
Determination Date preceding such Distribution Date) and the denominator of
which is the Class B Principal Balance.

            Class B-1 Prepayment Percentage: As to any Distribution Date, the
percentage calculated by multiplying the Subordinated Prepayment Percentage by
either (a) for the purpose of allocating Liquidation Proceeds (other than
Partial Liquidation Proceeds), a fraction, the numerator of which is the Class
B-1 Principal Balance (determined as of the Determination Date preceding such
Distribution Date) and the denominator of which is the Class B Principal Balance
or (b) for the purpose of allocating all other unscheduled principal
distributions (i) if any Class B Certificates (other than the Class B-1
Certificates) are eligible to receive such unscheduled principal distributions
for such Distribution Date in accordance with Section 4.01(d), a fraction, the
numerator of which is the Class B-1 Principal Balance (determined as of the
Determination Date preceding such Distribution Date) and the denominator of
which is the sum of the Principal Balances of the Classes of Class B
Certificates eligible to receive such unscheduled principal distributions for
such Distribution Date in accordance with the provisions of Section 4.01(d) or
(ii) except as set forth in Section 4.01(d)(ii), in the event that the Class B
Certificates (other than the Class B-1 Certificates) are not eligible to receive
such unscheduled principal distributions in accordance with Section 4.01(d)(i),
one.

            Class B-1 Principal Balance: As to the first Determination Date, the
Original Class B-1 Principal Balance. As of any subsequent Determination Date,
the Original Class B-1 Principal Balance less the sum of all amounts previously
distributed in respect of the Class B-1 Certificates on prior Distribution Dates
(A) pursuant to Paragraph sixth of Section 4.01(a) and (B) as a result of a
Principal Adjustment; provided, however, if the Class B-1 Certificates are the
most subordinate Certificates outstanding, the Class B-1 Principal Balance will
equal the difference, if any, between the Adjusted Pool Amount as of the
preceding Distribution Date less the Class A Principal Balance as of such
Determination Date.

            Class B-1 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class B-1 Interest Shortfall
Amounts for prior Distribution Dates is in excess of the amounts distributed in
respect of the Class B-1 Certificates on prior Distribution Dates pursuant to
Paragraph fifth of Section 4.01(a).

            Class B-2 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit B-2 and Exhibit C hereto.

            Class B-2 Certificateholder: The registered holder of a Class B-2
Certificate.

            Class B-2 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class B-2 Certificates pursuant to
Paragraphs seventh, eighth and ninth of Section 4.01(a).

            Class B-2 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class B-2 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class B-2 Certificates on such Distribution Date pursuant to Paragraph
seventh of Section 4.01(a).

            Class B-2 Optimal Principal Amount: As to any Distribution Date and
each Outstanding Mortgage Loan, an amount equal to the sum of:

(I) the sum of:

            (i) the Class B-2 Percentage of the principal portion of the Monthly
      Payment due on the Due Date occurring in the month of such Distribution
      Date on such Mortgage Loan;

            (ii) the Class B-2 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class B-2 Prepayment Percentage of the Scheduled Principal
      Balance of such Mortgage Loan which, during the one month period ending on
      the day preceding the Determination Date for such Distribution Date, was
      repurchased by the Depositor pursuant to Section 2.02, 2.03 or 3.08; and

            (iv) the Class B-2 Percentage of the Substitution Principal Amount
      with respect to each Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class B-2 Prepayment Percentage of the Recovery for such Distribution
Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class B-2 Optimal Principal Amount
will equal the lesser of (A) the Class B-2 Optimal Principal Amount calculated
as described in the preceding provisions and (B) the Adjusted Principal Balance
for the Class B-2 Certificates.

            Class B-2 Percentage: As to any Distribution Date, except as set
forth in the next sentence, the percentage calculated by multiplying (i) the
Subordinated Percentage by (ii) a fraction, the numerator of which is the Class
B-2 Principal Balance (determined as of the Determination Date preceding such
Distribution Date) and the denominator of which is the Class B Principal
Balance.

            Class B-2 Prepayment Percentage: As to any Distribution Date, except
as set forth in the next sentence, the percentage calculated by multiplying (i)
the Subordinated Prepayment Percentage by (ii) a fraction, the numerator of
which is the Class B-2 Principal Balance (determined as of the Determination
Date preceding such Distribution Date) and the denominator of which is (a) for
the purpose of allocating Liquidation Proceeds (other than Partial Liquidation
Proceeds) the Class B Principal Balance and (b) for the purpose of allocating
all other unscheduled principal distributions, the sum of the Principal Balances
of the Classes of Class B Certificates eligible to receive such unscheduled
principal distributions for such Distribution Date in accordance with the
provisions of Section 4.01(d). Except as set forth in Section 4.01(d)(ii), in
the event that the Class B-2 Certificates are not eligible to receive such
unscheduled principal distributions in accordance with Section 4.01(d)(i), the
Class B-2 Prepayment Percentage for such unscheduled principal distributions for
such Distribution Date will be zero.

            Class B-2 Principal Balance: As to the first Determination Date, the
Original Class B-2 Principal Balance. As of any subsequent Determination Date,
the Original Class B-2 Principal Balance less the sum of all amounts previously
distributed in respect of the Class B-2 Certificates on prior Distribution Dates
(A) pursuant to Paragraph ninth of Section 4.01(a) and (B) as a result of a
Principal Adjustment; provided, however, if the Class B-2 Certificates are the
most subordinate Certificates outstanding, the Class B-2 Principal Balance will
equal the difference, if any, between the Adjusted Pool Amount as of the
preceding Distribution Date less the sum of the Class A Principal Balance and
the Class B-1 Principal Balance as of such Determination Date.

            Class B-2 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class B-2 Interest Shortfall
Amounts for prior Distribution Dates is in excess of the amounts distributed in
respect of the Class B-2 Certificates on prior Distribution Dates pursuant to
Paragraph eighth of Section 4.01(a).

            Class B-3 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit B-3 and Exhibit C hereto.

            Class B-3 Certificateholder: The registered holder of a Class B-3
Certificate.

            Class B-3 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class B-3 Certificates pursuant to
Paragraphs tenth, eleventh and twelfth of Section 4.01(a).

            Class B-3 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class B-3 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class B-3 Certificates on such Distribution Date pursuant to Paragraph
tenth of Section 4.01(a).

            Class B-3 Optimal Principal Amount: As to any Distribution Date and
each Outstanding Mortgage Loan, an amount equal to the sum of:

(I) the sum of:

            (i) the Class B-3 Percentage of the principal portion of the Monthly
      Payment due on the Due Date occurring in the month of such Distribution
      Date on such Mortgage Loan;

            (ii) the Class B-3 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class B-3 Prepayment Percentage of the Scheduled Principal
      Balance of such Mortgage Loan which, during the one month period ending on
      the day preceding the Determination Date for such Distribution Date, was
      repurchased by the Depositor pursuant to Section 2.02, 2.03 or 3.08; and

            (iv) the Class B-3 Percentage of the Substitution Principal Amount
      with respect to each Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class B-3 Prepayment Percentage of the Recovery for such Distribution
Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class B-3 Optimal Principal Amount
will equal the lesser of (A) the Class B-3 Optimal Principal Amount calculated
as described in the preceding provisions and (B) the Adjusted Principal Balance
for the Class B-3 Certificates.

            Class B-3 Percentage: As to any Distribution Date, except as set
forth in the next sentence, the percentage calculated by multiplying (i) the
Subordinated Percentage by (ii) a fraction, the numerator of which is the Class
B-3 Principal Balance (determined as of the Determination Date preceding such
Distribution Date) and the denominator of which is the Class B Principal
Balance.

            Class B-3 Prepayment Percentage: As to any Distribution Date, except
as set forth in the next sentence, the percentage calculated by multiplying (i)
the Subordinated Prepayment Percentage by (ii) a fraction, the numerator of
which is the Class B-3 Principal Balance (determined as of the Determination
Date preceding such Distribution Date) and the denominator of which is (a) for
the purpose of allocating Liquidation Proceeds (other than Partial Liquidation
Proceeds) the Class B Principal Balance and (b) for the purpose of allocating
all other unscheduled principal distributions, the sum of the Principal Balances
of the Classes of Class B Certificates eligible to receive such unscheduled
principal distributions for such Distribution Date in accordance with the
provisions of Section 4.01(d). Except as set forth in Section 4.01(d)(ii), in
the event that the Class B-3 Certificates are not eligible to receive such
unscheduled principal in accordance with Section 4.01(d)(i), the Class B-3
Prepayment Percentage for such unscheduled principal distributions for such
Distribution Date will be zero.

            Class B-3 Principal Balance: As to the first Determination Date, the
Original Class B-3 Principal Balance. As of any subsequent Determination Date,
the Original Class B-3 Principal Balance less the sum of all amounts previously
distributed in respect of the Class B-3 Certificates on prior Distribution Dates
(A) pursuant to Paragraph twelfth of Section 4.01(a) and (B) as a result of a
Principal Adjustment; provided, however, if the Class B-3 Certificates are the
most subordinate Certificates outstanding, the Class B-3 Principal Balance will
equal the difference, if any, between the Adjusted Pool Amount as of the
preceding Distribution Date less the sum of the Class A Principal Balance, the
Class B-1 Principal Balance and the Class B-2 Principal Balance as of such
Determination Date.

            Class B-3 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class B-3 Interest Shortfall
Amounts for prior Distribution Dates is in excess of the amounts distributed in
respect of the Class B-3 Certificates on prior Distribution Dates pursuant to
Paragraph eleventh of Section 4.01(a).

            Class B-4 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit B-4 and Exhibit C hereto.

            Class B-4 Certificateholder: The registered holder of a Class B-4
Certificate.

            Class B-4 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class B-4 Certificates pursuant to
Paragraphs thirteenth, fourteenth and fifteenth of Section 4.01(a).

            Class B-4 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class B-4 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class B-4 Certificates on such Distribution Date pursuant to Paragraph
thirteenth of Section 4.01(a).

            Class B-4 Optimal Principal Amount: As to any Distribution Date and
each Outstanding Mortgage Loan, an amount equal to the sum of:

(I) the sum of:

            (i) the Class B-4 Percentage of the principal portion of the Monthly
      Payment due on the Due Date occurring in the month of such Distribution
      Date on such Mortgage Loan;

            (ii) the Class B-4 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class B-4 Prepayment Percentage of the Scheduled Principal
      Balance of such Mortgage Loan which, during the one month period ending on
      the day preceding the Determination Date for such Distribution Date, was
      repurchased by the Depositor pursuant to Section 2.02, 2.03 or 3.08; and

            (iv) the Class B-4 Percentage of the Substitution Principal Amount
      with respect to each Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class B-4 Prepayment Percentage of the Recovery for such Distribution
Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class B-4 Optimal Principal Amount
will equal the lesser of (A) the Class B-4 Optimal Principal Amount calculated
as described in the preceding provisions and (B) the Adjusted Principal Balance
for the Class B-4 Certificates.

            Class B-4 Percentage: As to any Distribution Date, except as set
forth in the next sentence, the percentage calculated by multiplying (i) the
Subordinated Percentage by (ii) a fraction, the numerator of which is the Class
B-4 Principal Balance (determined as of the Determination Date preceding such
Distribution Date) and the denominator of which is the Class B Principal
Balance.

            Class B-4 Prepayment Percentage: As to any Distribution Date, except
as set forth in the next sentence, the percentage calculated by multiplying (i)
the Subordinated Prepayment Percentage by (ii) a fraction, the numerator of
which is the Class B-4 Principal Balance (determined as of the Determination
Date preceding such Distribution Date) and the denominator of which is (a) for
the purpose of allocating Liquidation Proceeds (other than Partial Liquidation
Proceeds) the Class B Principal Balance and (b) for the purpose of allocating
all other unscheduled principal distributions, the sum of the Principal Balances
of the Classes of Class B Certificates eligible to receive such unscheduled
principal distributions for such Distribution Date in accordance with the
provisions of Section 4.01(d). Except as set forth in Section 4.01(d)(ii), in
the event that the Class B-4 Certificates are not eligible to receive such
unscheduled principal in accordance with Section 4.01(d)(i), the Class B-4
Prepayment Percentage for such unscheduled principal distributions for such
Distribution Date will be zero.

            Class B-4 Principal Balance: As to the first Determination Date, the
Original Class B-4 Principal Balance. As of any subsequent Determination Date,
the Original Class B-4 Principal Balance less the sum of all amounts previously
distributed in respect of the Class B-4 Certificates on prior Distribution Dates
(A) pursuant to Paragraph fifteenth of Section 4.01(a) and (B) as a result of a
Principal Adjustment; provided, however, if the Class B-4 Certificates are the
most subordinate Certificates outstanding, the Class B-4 Principal Balance will
equal the difference, if any, between the Adjusted Pool Amount as of the
preceding Distribution Date less the sum of the Class A Principal Balance, the
Class B-1 Principal Balance, the Class B-2 Principal Balance and the Class B-3
Principal Balance as of such Determination Date.

            Class B-4 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class B-4 Interest Shortfall
Amounts for prior Distribution Dates is in excess of the amounts distributed in
respect of the Class B-4 Certificates on prior Distribution Dates pursuant to
Paragraph fourteenth of Section 4.01(a).

            Class B-5 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit B-5 and Exhibit C hereto.

            Class B-5 Certificateholder: The registered holder of a Class B-5
Certificate.

            Class B-5 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class B-5 Certificates pursuant to
Paragraphs sixteenth, seventeenth and eighteenth of Section 4.01(a).

            Class B-5 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class B-5 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class B-5 Certificates on such Distribution Date pursuant to Paragraph
sixteenth of Section 4.01(a).

            Class B-5 Optimal Principal Amount: As to any Distribution Date and
each Outstanding Mortgage Loan, an amount equal to the sum of:

(I) the sum of:

            (i) the Class B-5 Percentage of the principal portion of the Monthly
      Payment due on the Due Date occurring in the month of such Distribution
      Date on such Mortgage Loan;

            (ii) the Class B-5 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class B-5 Prepayment Percentage of the Scheduled Principal
      Balance of such Mortgage Loan which, during the one month period ending on
      the day preceding the Determination Date for such Distribution Date, was
      repurchased by the Depositor pursuant to Section 2.02, 2.03 or 3.08; and

            (iv) the Class B-5 Percentage of the Substitution Principal Amount
      with respect to each Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class B-5 Prepayment Percentage of the Recovery for such Distribution
Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class B-5 Optimal Principal Amount
will equal the lesser of (A) the Class B-5 Optimal Principal Amount calculated
as described in the preceding provisions and (B) the Adjusted Principal Balance
for the Class B-5 Certificates.

            Class B-5 Percentage: As to any Distribution Date, except as set
forth in the next sentence, the percentage calculated by multiplying (i) the
Subordinated Percentage by (ii) a fraction, the numerator of which is the Class
B-5 Principal Balance (determined as of the Determination Date preceding such
Distribution Date) and the denominator of which is the Class B Principal
Balance.

            Class B-5 Prepayment Percentage: As to any Distribution Date, except
as set forth in the next sentence, the percentage calculated by multiplying (i)
the Subordinated Prepayment Percentage by (ii) a fraction, the numerator of
which is the Class B-5 Principal Balance (determined as of the Determination
Date preceding such Distribution Date) and the denominator of which is (a) for
the purpose of allocating Liquidation Proceeds (other than Partial Liquidation
Proceeds) the Class B Principal Balance and (b) for the purpose of allocating
all other unscheduled principal distributions, the sum of the Principal Balances
of the Classes of Class B Certificates eligible to receive such unscheduled
principal distributions for such Distribution Date in accordance with the
provisions of Section 4.01(d). Except as set forth in Section 4.01(d)(ii), in
the event that the Class B-5 Certificates are not eligible to receive
unscheduled principal distributions in accordance with Section 4.01(d)(i), the
Class B-5 Prepayment Percentage for such unscheduled principal distributions for
such Distribution Date will be zero.

            Class B-5 Principal Balance: As to the first Determination Date, the
Original Class B-5 Principal Balance. As of any subsequent Determination Date,
the Original Class B-5 Principal Balance less the sum of all amounts previously
distributed in respect of the Class B-5 Certificates on prior Distribution Dates
(A) pursuant to Paragraph eighteenth of Section 4.01(a) and (B) as a result of a
Principal Adjustment; provided, however, if the Class B-5 Certificates are the
most subordinate Certificates outstanding, the Class B-5 Principal Balance will
equal the difference, if any, between the Adjusted Pool Amount as of the
preceding Distribution Date less the sum of the Class A Principal Balance, the
Class B-1 Principal Balance, the Class B-2 Principal Balance, the Class B-3
Principal Balance and the Class B-4 Principal Balance as of such Determination
Date.

            Class B-5 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class B-5 Interest Shortfall
Amounts for prior Distribution Dates is in excess of the amounts distributed in
respect of the Class B-5 Certificates on prior Distribution Dates pursuant to
Paragraph seventeenth of Section 4.01(a).

            Class B-6 Certificate: Any one of the Certificates executed by the
Paying Agent and countersigned by the Authenticating Agent in substantially the
form set forth in Exhibit B-6 and Exhibit C hereto.

            Class B-6 Certificateholder: The registered holder of a Class B-6
Certificate.

            Class B-6 Distribution Amount: As to any Distribution Date, any
amount distributable to the Holders of the Class B-6 Certificates pursuant to
Paragraphs nineteenth, twentieth and twenty-first of Section 4.01(a).

            Class B-6 Interest Shortfall Amount: As to any Distribution Date,
any amount by which the Interest Accrual Amount of the Class B-6 Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class B-6 Certificates on such Distribution Date pursuant to Paragraph
nineteenth of Section 4.01(a).

            Class B-6 Optimal Principal Amount: As to any Distribution Date and
each Outstanding Mortgage Loan, an amount equal to the sum of:

(I) the sum of:

            (i) the Class B-6 Percentage of the principal portion of the Monthly
      Payment due on the Due Date occurring in the month of such Distribution
      Date on such Mortgage Loan;

            (ii) the Class B-6 Prepayment Percentage of all Unscheduled
      Principal Receipts (other than Recoveries) that were received by a
      Servicer with respect to such Mortgage Loan during the Applicable
      Unscheduled Principal Receipt Period relating to such Distribution Date
      for each applicable type of Unscheduled Principal Receipt;

            (iii) the Class B-6 Prepayment Percentage of the Scheduled Principal
      Balance of such Mortgage Loan which, during the one month period ending on
      the day preceding the Determination Date for such Distribution Date, was
      repurchased by the Depositor pursuant to Section 2.02, 2.03 or 3.08; and

            (iv) the Class B-6 Percentage of the Substitution Principal Amount
      with respect to each Mortgage Loan for which a Mortgage Loan was
      substituted during the one month period ending on the day preceding the
      Determination Date for such Distribution Date, less the amount allocable
      to the principal portion of any unreimbursed Periodic Advances previously
      made by the applicable Servicer, the Master Servicer or the Trustee in
      respect of such Mortgage Loan for which a Mortgage Loan was substituted;
      and

(II) the Class B-6 Prepayment Percentage of the Recovery for such Distribution
Date;

provided, however, that if an Optimal Adjustment Event occurs with respect to
such Class and such Distribution Date, the Class B-6 Optimal Principal Amount
will equal the lesser of (A) the Class B-6 Optimal Principal Amount calculated
as described in the preceding provisions and (B) the Adjusted Principal Balance
for the Class B-6 Certificates.

            Class B-6 Percentage: As to any Distribution Date, except as set
forth in the next sentence, the percentage calculated by multiplying (i) the
Subordinated Percentage by (ii) a fraction, the numerator of which is the Class
B-6 Principal Balance (determined as of the Determination Date preceding such
Distribution Date) and the denominator of which is the Class B Principal
Balance.

            Class B-6 Prepayment Percentage: As to any Distribution Date, except
as set forth in the next sentence, the percentage calculated by multiplying (i)
the Subordinated Prepayment Percentage by (ii) a fraction, the numerator of
which is the Class B-6 Principal Balance (determined as of the Determination
Date preceding such Distribution Date) and the denominator of which is (a) for
the purpose of allocating Liquidation Proceeds (other than Partial Liquidation
Proceeds) the Class B Principal Balance and (b) for the purpose of allocating
all other unscheduled principal distributions, the sum of the Principal Balances
of the Classes of Class B Certificates eligible to receive such unscheduled
principal distributions for such Distribution Date in accordance with the
provisions of Section 4.01(d). Except as set forth in Section 4.01(d)(ii), in
the event that the Class B-6 Certificates are not eligible to receive such
unscheduled principal in accordance with Section 4.01(d)(i), the Class B-6
Prepayment Percentage for such unscheduled principal distributions for such
Distribution Date will be zero.

            Class B-6 Principal Balance: As to the first Determination Date, the
Original Class B-6 Principal Balance. As of any subsequent Determination Date,
for so long as the Class B-6 Certificates are outstanding, the Class B-6
Principal Balance will equal the difference, if any, between the Adjusted Pool
Amount as of the preceding Distribution Date less the sum of the Class A
Principal Balance, the Class B-1 Principal Balance, the Class B-2 Principal
Balance, the Class B-3 Principal Balance, the Class B-4 Principal Balance and
the Class B-5 Principal Balance as of such Determination Date.

            Class B-6 Unpaid Interest Shortfall: As to any Distribution Date,
the amount, if any, by which the aggregate of the Class B-6 Interest Shortfall
Amounts for prior Distribution Dates is in excess of the amounts distributed in
respect of the Class B-6 Certificates on prior Distribution Dates pursuant to
Paragraph twentieth of Section 4.01(a).

            Clearing Agency: An organization registered as a "clearing agency"
pursuant to Section 17A of the Exchange Act. The initial Clearing Agency shall
be The Depository Trust Company.

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

            Closing Date: The date of initial issuance of the Certificates, as
set forth in Section 11.19.

            Code: The Internal Revenue Code of 1986, as it may be amended from
time to time, any successor statutes thereto, and applicable U.S. Department of
the Treasury temporary or final regulations promulgated thereunder.

            Commission: The United States Securities and Exchange Commission.

            Compensating Interest: With respect to any Distribution Date, the
least of (a) the aggregate Prepayment Interest Shortfall on the Mortgage Loans
for such Distribution Date, (b) the product of (i) 1/12th of 0.20% and (ii) the
Pool Scheduled Principal Balance for such Distribution Date and (c) the
Available Master Servicing Compensation for such Distribution Date.

            Co-op Shares: Shares issued by private non-profit housing
corporations.

            Corporate Trust Office: With respect to (a) the Trustee, the office
of the Trustee at which at any particular time its duties under this Agreement
shall be administered, which office, at the date of the execution of this
instrument, is located at 452 Fifth Avenue, New York, New York 10018, Attention:
CTLA--Structured Finance, WFMBS 2007-AR8 and (b) the Paying Agent, Certificate
Registrar and Authenticating Agent, for Certificate transfer purposes at Wells
Fargo Center, Sixth Street and Marquette Avenue, Minneapolis, Minnesota 55479
Attn: Corporate Trust Services--WFMBS 2007-AR8, and for all other purposes at
9062 Old Annapolis Road, Columbia, Maryland 21045 Attn: Corporate Trust
Services--WFMBS 2007-AR8.

            Current Class A Interest Distribution Amount: As to any Distribution
Date, the amount distributed in respect of the Classes of Class A Certificates
pursuant to Paragraph first of Section 4.01(a) on such Distribution Date.

            Current Class B Interest Distribution Amount: As to any Distribution
Date, the amount distributed in respect of the Classes of Class B Certificates
pursuant to Paragraphs fourth, seventh, tenth, thirteenth, sixteenth and
nineteenth of Section 4.01(a) on such Distribution Date.

            Current Class B-1 Fractional Interest: As to any Distribution Date
subsequent to the first Distribution Date, the percentage obtained by dividing
the sum of the Principal Balances of the Class B-2, Class B-3, Class B-4, Class
B-5 and Class B-6 Certificates by the Aggregate Principal Balance. As to the
first Distribution Date, the Original Class B-1 Fractional Interest.

            Current Class B-2 Fractional Interest: As to any Distribution Date
subsequent to the first Distribution Date, the percentage obtained by dividing
the sum of the Principal Balances of the Class B-3, Class B-4, Class B-5 and
Class B-6 Certificates by the Aggregate Principal Balance. As to the first
Distribution Date, the Original Class B-2 Fractional Interest.

            Current Class B-3 Fractional Interest: As to any Distribution Date
subsequent to the first Distribution Date, the percentage obtained by dividing
the sum of the Principal Balances of the Class B-4, Class B-5 and Class B-6
Certificates by the Aggregate Principal Balance. As to the first Distribution
Date, the Original Class B-3 Fractional Interest.

            Current Class B-4 Fractional Interest: As to any Distribution Date
subsequent to the first Distribution Date, the percentage obtained by dividing
the sum of the Principal Balances of the Class B-5 and Class B-6 Certificates by
the Aggregate Principal Balance. As to the first Distribution Date, the Original
Class B-4 Fractional Interest.

            Current Class B-5 Fractional Interest: As to any Distribution Date
subsequent to the first Distribution Date, the percentage obtained by dividing
the Principal Balance of the Class B-6 Certificates by the Aggregate Principal
Balance. As to the first Distribution Date, the Original Class B-5 Fractional
Interest.

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

            Curtailment Interest Shortfall: On any Distribution Date with
respect to a Mortgage Loan which was the subject of a Curtailment:

            (A)   in the case where the Applicable Unscheduled Principal Receipt
                  Period is the Mid-Month Receipt Period and such Curtailment is
                  received by the applicable Servicer on or after the
                  Determination Date in the month preceding the month of such
                  Distribution Date but prior to the first day of the month of
                  such Distribution Date, the amount of interest that would have
                  accrued at the Net Mortgage Interest Rate on the amount of
                  such Curtailment from the day of its receipt or, if earlier,
                  its application by such Servicer through the last day of the
                  month preceding the month of such Distribution Date; and

            (B)   in the case where the Applicable Unscheduled Principal Receipt
                  Period is the Prior Month Receipt Period and such Curtailment
                  is received by the applicable Servicer during the month
                  preceding the month of such Distribution Date, the amount of
                  interest that would have accrued at the Net Mortgage Interest
                  Rate on the amount of such Curtailment from the day of its
                  receipt or, if earlier, its application by such Servicer
                  through the last day of the month in which such Curtailment is
                  received.

            Custodial Agreement: The Custodial Agreement, dated as of November
29, 2007, among the Custodian, the Depositor, the Master Servicer and the
Trustee, which agreement is attached hereto as Exhibit E, as the same may be
amended or modified from time to time in accordance with the terms thereof.

            Custodial P&I Account: The Custodial P&I Account, as defined in each
of the Servicing Agreements, with respect to the Mortgage Loans. In determining
whether the Custodial P&I Account under any Servicing Agreement is "acceptable"
to the Master Servicer (as may be required by the definition of "Eligible
Account" contained in the Servicing Agreements), the Master Servicer shall
require that any such account shall be acceptable to each of the Rating
Agencies.

            Custodian: Wells Fargo Bank, or its successor in interest under the
Custodial Agreement. Initially, the custodial functions shall be performed by
the Corporate Trust Services division of Wells Fargo Bank.

            Cut-Off Date: The first day of the month of initial issuance of the
Certificates as set forth in Section 11.01.

            Cut-Off Date Aggregate Principal Balance: The aggregate of the
Cut-Off Date Principal Balances of the Mortgage Loans as set forth in Section
11.02.

            Cut-Off Date Principal Balance: As to each Mortgage Loan, its unpaid
principal balance as of the close of business on the Cut-Off Date (but without
giving effect to any Unscheduled Principal Receipts received or applied on the
Cut-Off Date), reduced by all payments of principal due on or before the Cut-Off
Date and not paid, and increased by scheduled monthly payments of principal due
after the Cut-Off Date but received by the related Servicer on or before the
Cut-Off Date.

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

            Deficient Valuation: With respect to any Mortgage Loan, a valuation
by a court of competent jurisdiction of the Mortgaged Property in an amount less
than the then-outstanding indebtedness under the Mortgage Loan, or any reduction
in the amount of principal to be paid in connection with any scheduled Monthly
Payment that results in a permanent forgiveness of principal, which valuation or
reduction results from a proceeding under the Bankruptcy Code.

            Definitive Certificates: As defined in Section 5.01(b).

            Denomination: The amount, if any, specified on the face of each
Certificate representing the principal portion of the Original Principal Balance
evidenced by such Certificate.

            Depositor: Wells Fargo Asset Securities Corporation, or its
successor in interest.

            Determination Date: The 17th day of the month in which the related
Distribution Date occurs, or if such 17th day is not a Business Day, the
Business Day preceding such 17th day.

            Distribution Date: The 25th day of any month, beginning in the month
following the month of initial issuance of the Certificates, or if such 25th day
is not a Business Day, the Business Day following such 25th day.

            Distribution Date Statement: As defined in Section 4.04(a).

            Document Transfer Date: The 60th day following the occurrence of a
Document Transfer Event.

            Document Transfer Event: The occurrence of either of the following:
(i) Wells Fargo Bank is no longer the Servicer of any of the Mortgage Loans or
(ii) the senior, unsecured long-term debt rating of Wells Fargo & Company is
less than "BBB-" by Fitch.

            Due Date: With respect to any Mortgage Loan, the day of the month in
which the Monthly Payment on such Mortgage Loan is scheduled to be paid.

            Eligible Account: One or more accounts (i) that are maintained with
a depository institution (which may be the Master Servicer) whose long-term debt
obligations (or, in the case of a depository institution which is part of a
holding company structure, the long-term debt obligations of such parent holding
company) at the time of deposit therein are rated at least "AA" (or the
equivalent) by each Rating Agency, (ii) that are trust accounts maintained with
the trust department of a federal or state chartered depository institution or
trust company acting in its fiduciary capacity or (iii) such other account that
is acceptable to each of the Rating Agencies and would not cause the Trust
Estate to fail to qualify as a REMIC or result in the imposition of any federal
tax on the REMIC. If an account ceases to be an Eligible Account under clause
(i) and does not otherwise qualify under clause (ii) or (iii) the account will
be moved within 30 days to a depository meeting the ratings criteria.

            Eligible Investments: At any time, any one or more of the following
obligations and securities which shall mature not later than the Business Day
preceding the Distribution Date next succeeding the date of such investment,
provided that such investments continue to qualify as "cash flow investments" as
defined in Code Section 860G(a)(6):

            (i) obligations of the United States of America or any agency
      thereof, provided such obligations are backed by the full faith and credit
      of the United States of America;

            (ii) general obligations of or obligations guaranteed by any state
      of the United States of America or the District of Columbia receiving the
      highest short-term or highest long-term rating of each Rating Agency, or
      such lower rating as would not result in the downgrading or withdrawal of
      the rating then assigned to any of the Certificates by any Rating Agency
      or result in any of such rated Certificates being placed on credit review
      status (other than for possible upgrading) by any Rating Agency;

            (iii) commercial or finance company paper which is then rated in the
      highest long-term commercial or finance company paper rating category of
      each Rating Agency or the highest short-term rating category of each
      Rating Agency, or such lower rating category as would not result in the
      downgrading or withdrawal of the rating then assigned to any of the
      Certificates by any Rating Agency or result in any of such rated
      Certificates being placed on credit review status (other than for possible
      upgrading) by any Rating Agency;

            (iv) certificates of deposit, demand or time deposits, federal funds
      or banker's acceptances issued by any depository institution or trust
      company incorporated under the laws of the United States or of any state
      thereof and subject to supervision and examination by federal and/or state
      banking authorities, provided that the commercial paper and/or debt
      obligations of such depository institution or trust company (or in the
      case of the principal depository institution in a holding company system,
      the commercial paper or debt obligations of such holding company) are then
      rated in the highest short-term or the highest long-term rating category
      for such securities of each of the Rating Agencies, or such lower rating
      categories as would not result in the downgrading or withdrawal of the
      rating then assigned to any of the Certificates by any Rating Agency or
      result in any of such rated Certificates being placed on credit review
      status (other than for possible upgrading) by any Rating Agency;

            (v) guaranteed reinvestment agreements issued by any bank, insurance
      company or other corporation acceptable to each Rating Agency at the time
      of the issuance of such agreements;

            (vi) repurchase agreements on obligations with respect to any
      security described in clauses (i) or (ii) above or any other security
      issued or guaranteed by an agency or instrumentality of the United States
      of America, in either case entered into with a depository institution or
      trust company (acting as principal) described in (iv) above;

            (vii) securities (other than stripped bonds or stripped coupon
      securities) bearing interest or sold at a discount issued by any
      corporation incorporated under the laws of the United States of America or
      any state thereof which, at the time of such investment or contractual
      commitment providing for such investment, are then rated in the highest
      short-term or the highest long-term rating category by each Rating Agency,
      or in such lower rating category as would not result in the downgrading or
      withdrawal of the rating then assigned to any of the Certificates by any
      Rating Agency or result in any of such rated Certificates being placed on
      credit review status (other than for possible upgrading) by any Rating
      Agency;

            (viii) such other investments acceptable to each Rating Agency as
      would not result in the downgrading of the rating then assigned to the
      Certificates by any Rating Agency or result in any of such rated
      Certificates being placed on credit review status (other than for possible
      upgrading) by any Rating Agency; and

            (ix) any mutual fund, money market fund, common trust fund or other
      pooled investment vehicle, the assets of which are limited to instruments
      that otherwise would constitute Eligible Investments hereunder, including
      any such fund that is managed by the Trustee or Master Servicer or any
      affiliate of the Trustee or Master Servicer or for which the Trustee or
      Master Servicer or any of its affiliates acts as an adviser as long as
      such fund is rated in at least the highest rating category by each Rating
      Agency rating such fund.

            In no event shall an instrument be an Eligible Investment if such
instrument evidences either (i) a right to receive only interest payments with
respect to the obligations underlying such instrument, or (ii) both principal
and interest payments derived from obligations underlying such instrument and
the interest and principal payments with respect to such instrument provide a
yield to maturity at the date of investment of greater than 120% of the yield to
maturity at par of such underlying obligations.

            ERISA: The Employee Retirement Income Security Act of 1974, as
amended.

            ERISA Prohibited Holder: As defined in Section 5.02(d).

            Errors and Omissions Policy: As defined in each of the Servicing
Agreements.

            Event of Default: Any of the events specified in Section 7.01.

            Exchange Act: The Securities Exchange Act of 1934, as amended.

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

            Fidelity Bond: As defined in each of the Servicing Agreements.

            Final Distribution Date: The Distribution Date on which the final
distribution in respect of the Certificates is made pursuant to Section 9.01.

            Final Scheduled Maturity Date: The Final Scheduled Maturity Date for
each Class of Class A Certificates and Class B Certificates is November 25,
2037, which corresponds to the "latest possible maturity date" for purposes of
Section 860G(a)(1) of the Internal Revenue Code of 1986, as amended.

            Fitch: Fitch Ratings, or its successor in interest.

            Form 8-K: A Current Report on Form 8-K under the Exchange Act.

            Form 8-K Disclosure Information: As defined in Section 3.12(c).

            Form 10-D: An Asset-Backed Issuer Distribution Report on Form 10-D
under the Exchange Act.

            Form 10-K: An Annual Report on Form 10-K under the Exchange Act.

            Form 15: A Form 15 Suspension Notification under the Exchange Act.

            Full Unscheduled Principal Receipt: Any Unscheduled Principal
Receipt with respect to a Mortgage Loan (i) in the amount of the outstanding
principal balance of such Mortgage Loan and resulting in the full satisfaction
of such Mortgage Loan or (ii) representing Liquidation Proceeds other than
Partial Liquidation Proceeds.

            Gross Margin: As to each Mortgage Loan, the fixed percentage set
forth in the related Mortgage Note and indicated in the Mortgage Loan Schedule
as the "Gross Margin," which percentage is added to the applicable Index on each
Adjustment Date to determine (subject to rounding, the Periodic Cap and the Rate
Ceiling) the Mortgage Interest Rate on such Mortgage Loan until the next
Adjustment Date.

            Holder: See "Certificateholder."

            Independent: When used with respect to any specified Person, such
Person who (i) is in fact independent of the Depositor, the Master Servicer and
any Servicer, (ii) does not have any direct financial interest or any material
indirect financial interest in the Depositor or the Master Servicer or any
Servicer or in an affiliate of either and (iii) is not connected with the
Depositor, the Master Servicer or any Servicer as an officer, employee,
promoter, underwriter, trustee, partner, director or person performing similar
functions.

            Index: Either of the One-Year CMT Index or the One-Year LIBOR Index.
In the event that either such Index is no longer available, the applicable
Servicer will select a substitute Index in accordance with the terms of the
related Mortgage Note and in compliance with federal and state law.

            Insurance Policy: Any insurance or performance bond relating to a
Mortgage Loan or the Mortgage Loans, including any hazard insurance, special
hazard insurance, flood insurance, primary mortgage insurance, mortgagor
bankruptcy bond or title insurance.

            Insurance Proceeds: Proceeds paid by any insurer pursuant to any
Insurance Policy covering a Mortgage Loan.

            Insured Expenses: Expenses covered by any Insurance Policy covering
a Mortgage Loan.

            Interest Accrual Amount: As to any Distribution Date and any Class
of Class A Certificates, (i) the product of (a) 1/12th of the Class A
Pass-Through Rate for such Class and (b) the Principal Balance of such Class as
of the Determination Date immediately preceding such Distribution Date minus
(ii) the Class A Interest Percentage of such Class of (a) any Non-Supported
Interest Shortfall allocated to the Class A Certificates with respect to such
Distribution Date, (b) any Relief Act Shortfall allocated to such Class and (c)
the interest portion of any Realized Losses allocated to the Class A
Certificates on or after the Subordination Depletion Date pursuant to Section
4.02(c).

            As to any Distribution Date and any Class of Class B Certificates,
an amount equal to (i) the product of 1/12th of the Class B Pass-Through Rate
and the Principal Balance of such Class as of the Determination Date preceding
such Distribution Date minus (ii) the Class B Interest Percentage of such Class
of the sum of any Non-Supported Interest Shortfall and any Relief Act Shortfall
allocated to the Class B Certificates with respect to such Distribution Date.

            Letter of Credit: As defined in the Wells Fargo Bank Servicing
Agreement.

            Liquidated Loan: A Mortgage Loan with respect to which the related
Mortgaged Property has been acquired, liquidated or foreclosed and with respect
to which the applicable Servicer determines that all Liquidation Proceeds which
it expects to recover have been recovered.

            Liquidated Loan Loss: With respect to any Distribution Date, the
aggregate of the amount of losses with respect to each Mortgage Loan which
became a Liquidated Loan during the Applicable Unscheduled Principal Receipt
Period with respect to Full Unscheduled Principal Receipts for such Distribution
Date, equal to the excess of (i) the unpaid principal balance of each such
Liquidated Loan, plus accrued interest thereon in accordance with the
amortization schedule at the time applicable thereto at the applicable Net
Mortgage Interest Rate from the Due Date as to which interest was last paid with
respect thereto through the last day of the month preceding the month in which
such Distribution Date occurs, over (ii) Net Liquidation Proceeds with respect
to such Liquidated Loan.

            Liquidation Expenses: Expenses incurred by a Servicer in connection
with the liquidation of any defaulted Mortgage Loan or property acquired in
respect thereof (including, without limitation, legal fees and expenses,
committee or referee fees, and, if applicable, brokerage commissions and
conveyance taxes), any unreimbursed advances (including Periodic Advances)
expended by such Servicer pursuant to its Servicing Agreement or the Master
Servicer or Trustee pursuant hereto respecting the related Mortgage Loan,
including any unreimbursed advances for real property taxes or for property
restoration or preservation of the related Mortgaged Property. Liquidation
Expenses shall not include any previously incurred expenses in respect of an REO
Mortgage Loan which have been netted against related REO Proceeds.

            Liquidation Proceeds: Amounts received by a Servicer (including
Insurance Proceeds) or PMI Advances made by a Servicer in connection with the
liquidation of defaulted Mortgage Loans or property acquired in respect thereof,
whether through foreclosure, sale or otherwise, including payments in connection
with such Mortgage Loans received from the Mortgagor, other than amounts
required to be paid to the Mortgagor pursuant to the terms of the applicable
Mortgage or to be applied otherwise pursuant to law.

            Liquidation Profits: As to any Distribution Date and any Mortgage
Loan that became a Liquidated Loan during the Applicable Unscheduled Principal
Receipt Period with respect to Full Unscheduled Principal Receipts for such
Distribution Date, the excess, if any, of (i) Net Liquidation Proceeds in
respect of such Liquidated Loan over (ii) the unpaid principal balance of such
Liquidated Loan plus accrued interest thereon in accordance with the
amortization schedule at the time applicable thereto at the applicable Net
Mortgage Interest Rate from the Due Date to which interest was last paid with
respect thereto through the last day of the month preceding the month in which
such Distribution Date occurs.

            Loan-to-Value Ratio: The ratio, expressed as a percentage, the
numerator of which is the principal balance of a particular Mortgage Loan at
origination and the denominator of which is the lesser of (x) the appraised
value of the related Mortgaged Property determined in the appraisal used by the
originator at the time of origination of such Mortgage Loan, and (y) if the
Mortgage is originated in connection with a sale of the Mortgaged Property, the
sale price for such Mortgaged Property.

            Master Servicer: Wells Fargo Bank, or its successor in interest.
Initially, the Master Servicer functions shall be performed by the Corporate
Trust Services division of Wells Fargo Bank.

            Master Servicer Errors and Omissions Policy: An insurance policy
covering losses caused by errors or omissions of the Master Servicer and its
personnel.

            Master Servicing Fee: With respect to any Mortgage Loan and any
Distribution Date, the fee payable monthly to the Master Servicer pursuant to
Section 6.05 equal to the Master Servicing Fee Rate of the unpaid principal
balance of such Mortgage Loan.

            Master Servicing Fee Rate: As set forth in Section 11.23.

            Master Servicing Officer: Any officer of the Master Servicer
involved in, or responsible for, the administration and master servicing of the
Mortgage Loans.

            MERS: The Mortgage Electronic Registration Systems, Inc.

            MERS Mortgage Loan: Any MOM Mortgage Loan or any other Mortgage Loan
as to which MERS is (or is intended to be) the mortgagee of record and as to
which a MIN has been assigned.

            Mid-Month Receipt Period: With respect to each Distribution Date,
the one month period beginning on the Determination Date (or, in the case of the
first Distribution Date, from and including the Cut-Off Date) occurring in the
calendar month preceding the month in which such Distribution Date occurs and
ending on the day preceding the Determination Date immediately preceding such
Distribution Date.

            MIN: A MERS Mortgage Identification Number assigned to a Mortgage
Loan registered under MERS.

            MOM: A Mortgage Loan where the related Mortgage names MERS as the
original mortgagee thereof, as to which a MIN has been assigned, and which
Mortgage has not been assigned to any other person.

            Month End Interest: As defined in each Servicing Agreement.

            Monthly Payment: As to any Mortgage Loan (including any REO Mortgage
Loan) and any Due Date, the payment of principal and interest due thereon in
accordance with the amortization schedule at the time applicable thereto (after
adjustment for any Curtailments and Deficient Valuations occurring prior to such
Due Date but before any adjustment to such amortization schedule, other than for
Deficient Valuations, by reason of any bankruptcy or similar proceeding or any
moratorium or similar waiver or grace period).

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

            Mortgage: The mortgage, deed of trust or other instrument creating a
first lien on Mortgaged Property securing a Mortgage Note together with any
Mortgage Loan Rider, if applicable.

            Mortgage Interest Rate: As to any Mortgage Loan, the per annum rate
at which interest accrues on the unpaid principal balance thereof as set forth
in the related Mortgage Note, which rate is as indicated on the Mortgage Loan
Schedule.

            Mortgage Loan Purchase Agreement: The mortgage loan purchase
agreement dated as of November 29, 2007 between Wells Fargo Bank, as seller, and
the Depositor, as purchaser.

            Mortgage Loan Rider: The standard Fannie Mae/Freddie Mac riders to
the Mortgage Note and/or Mortgage riders required when the Mortgaged Property is
a condominium unit or a unit in a planned unit development.

            Mortgage Loan Schedule: The list delivered by the Depositor to the
Trustee, the Master Servicer and the Custodian of the Mortgage Loans transferred
to the Trustee on the Closing Date as part of the Trust Estate, which list may
be amended following the Closing Date upon conveyance of a Substitute Mortgage
Loan pursuant to Section 2.02 or 2.03 and which list shall set forth at a
minimum the following information as of the close of business on the Cut-Off
Date (or, with respect to Substitute Mortgage Loans, as of the close of business
on the day of substitution) as to each Mortgage Loan:

            (i)     the Mortgage Loan identifying number;

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

            (iii)   the type of property;

            (iv)    the Mortgage Interest Rate;

            (v)     the Net Mortgage Interest Rate;

            (vi)    the Monthly Payment;

            (vii)   the original number of months to maturity;

            (viii)  the scheduled maturity date;

            (ix)    the Cut-Off Date Principal Balance;

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

            (xi)    whether such Mortgage Loan is a Subsidy Loan;

            (xii)   whether such Mortgage Loan is covered by primary mortgage
                    insurance;

            (xiii)  the applicable Servicing Fee Rate;

            (xiv)   the Master Servicing Fee Rate;

            (xv)    the applicable Index;

            (xvi)   the Gross Margin;

            (xvii)  the Periodic Cap;

            (xviii) the first Adjustment Date following the Closing Date;

            (xix)   the Rate Ceiling;

            (xx) in the case of any Mortgage Loan initially serviced by Wells
Fargo Bank, whether such Mortgage Loan is a Type 1 Mortgage Loan or a Type 2
Mortgage Loan; and

            (xxi) the name of the Servicer.

            Such schedule may consist of multiple reports that collectively set
forth all of the information required.

            Mortgage Loans: Each of the mortgage loans transferred and assigned
to the Trustee on the Closing Date pursuant to Section 2.01(a) and any mortgage
loans substituted therefor pursuant to Section 2.02 or 2.03, in each case as
from time to time are included in the Trust Estate as identified in the Mortgage
Loan Schedule.

            Mortgage Note: The note or other evidence of indebtedness evidencing
the indebtedness of a Mortgagor under a Mortgage Loan together with any related
Mortgage Loan Riders, if applicable.

            Mortgaged Property: The property subject to a Mortgage, which may
include Co-op Shares or residential long-term leases.

            Mortgagor: The obligor on a Mortgage Note.

            Net Liquidation Proceeds: As to any defaulted Mortgage Loan,
Liquidation Proceeds net of Liquidation Expenses.

            Net Mortgage Interest Rate: With respect to each Mortgage Loan, a
rate equal to (i) the Mortgage Interest Rate on such Mortgage Loan minus (ii)
the sum of (a) the applicable Servicing Fee Rate, as set forth in Section 11.22
with respect to such Mortgage Loan and (b) the Master Servicing Fee Rate, as set
forth in Section 11.23 with respect to such Mortgage Loan. Any regular monthly
computation of interest at such rate shall be based upon annual interest at such
rate on the applicable amount divided by twelve.

            Net REO Proceeds: As to any REO Mortgage Loan, REO Proceeds net of
any related expenses of the applicable Servicer.

            Net WAC: As to any Distribution Date, a per annum rate equal to the
weighted average of the Net Mortgage Interest Rates of the Mortgage Loans (based
on the Scheduled Principal Balances of the Mortgage Loans on the first day of
the month preceding the month in which such Distribution Date occurs).

            Non-permitted Foreign Holder: As defined in Section 5.02(d).

            Nonrecoverable Advance: Any portion of a Periodic Advance previously
made or proposed to be made in respect of a Mortgage Loan which has not been
previously reimbursed to the applicable Servicer, the Master Servicer or the
Trustee, as the case may be, and which the applicable Servicer, the Master
Servicer or the Trustee determines will not, or in the case of a proposed
Periodic Advance would not, be ultimately recoverable from Liquidation Proceeds
or other recoveries in respect of the related Mortgage Loan. The determination
by the applicable Servicer, the Master Servicer or the Trustee (i) that it has
made a Nonrecoverable Advance or (ii) that any proposed Periodic Advance, if
made, would constitute a Nonrecoverable Advance, shall be evidenced by an
Officer's Certificate of such Servicer delivered to the Master Servicer for
redelivery to the Trustee or, in the case of a Master Servicer determination, an
Officer's Certificate of the Master Servicer delivered to the Trustee, in each
case detailing the reasons for such determination.

            Non-Supported Interest Shortfall: With respect to any Distribution
Date, the sum of (i) the excess, if any, of the aggregate Prepayment Interest
Shortfall on the Mortgage Loans over the aggregate Compensating Interest with
respect to such Distribution Date and (ii) Curtailment Interest Shortfalls with
respect to such Distribution Date. With respect to each Distribution Date
occurring on or after the Subordination Depletion Date, the Non-Supported
Interest Shortfall determined pursuant to the preceding sentence will be
increased by the amount of any Subordination Depletion Date Interest Shortfall
for such Distribution Date. Any Non-Supported Interest Shortfall will be
allocated to (a) the Class A Certificates according to the percentage obtained
by dividing the Class A Principal Balance by the Aggregate Principal Balance and
(b) the Class B Certificates according to the percentage obtained by dividing
the Class B Principal Balance by the Aggregate Principal Balance.

            Non-U.S. Person: As defined in Section 4.01(f).

            NYCEMA: A New York Consolidation, Extension and Modification
Agreement.

            Officer's Certificate: With respect to any Person, a certificate
signed by the Chairman of the Board, the President or a Vice President, and by
the Treasurer, the Secretary or one of the Assistant Treasurers, Assistant
Secretaries or any other duly authorized officer of such Person (or, in the case
of a Person which is not a corporation, signed by the person or persons having
like responsibilities).

            One-Year CMT Index: As to any Mortgage Loan and Adjustment Date, a
rate per annum that is defined to be the weekly average yield on United States
Treasury Securities adjusted to a constant maturity of one year, as made
available by the Federal Reserve Board, published in Federal Reserve Statistical
Release H.15 (519) and most recently available as of the date up to 45 days
before the applicable Adjustment Date. In the event that such Index is no longer
available, the applicable Servicer will select a substitute Index in accordance
with the terms of the related Mortgage Note and in compliance with federal and
state law.

            One-Year LIBOR Index: As to any Mortgage Loan and Adjustment Date, a
rate per annum that is defined to be the average of interbank offered rates for
one-year U.S. dollar-denominated deposits in the London market, as published in
The Wall Street Journal and most recently available as of the date up to 45 days
before the applicable Adjustment Date.

            Opinion of Counsel: A written opinion of counsel, who may be outside
or salaried counsel for the Depositor, a Servicer or the Master Servicer, or any
affiliate of the Depositor, a Servicer or the Master Servicer, acceptable to the
Trustee if such opinion is to be delivered to the Trustee; provided, however,
that with respect to REMIC matters, matters relating to the determination of
Eligible Accounts or matters relating to transfers of Certificates, such counsel
shall be Independent.

            Optimal Adjustment Event: With respect to any Class of Class B
Certificates and any Distribution Date, an Optimal Adjustment Event will occur
with respect to such Class if: (i) the Principal Balance of such Class on the
Determination Date succeeding such Distribution Date would have been reduced to
zero (regardless of whether such Principal Balance was reduced to zero as a
result of principal distribution or the allocation of Realized Losses) and (ii)
(a) the Principal Balance of any Class of Class A Certificates would be subject
to further reduction as a result of the third sentence of the definition of
Principal Balance or (b) the Principal Balance of a Class of Class B
Certificates with a lower numerical designation would be reduced with respect to
such Distribution Date as a result of the application of the proviso in the
definition of Class B-1 Principal Balance, Class B-2 Principal Balance, Class
B-3 Principal Balance, Class B-4 Principal Balance or Class B-5 Principal
Balance.

            Original Class A Percentage: The Class A Percentage as of the
Cut-Off Date, as set forth in Section 11.03.

            Original Class A Principal Balance: The sum of the Original
Principal Balances of the Class A-1 and Class A-R Certificates, as set forth in
Section 11.04.

            Original Class B Principal Balance: The sum of the Original Class
B-1 Principal Balance, Original Class B-2 Principal Balance, Original Class B-3
Principal Balance, Original Class B-4 Principal Balance, Original Class B-5
Principal Balance and Original Class B-6 Principal Balance, as set forth in
Section 11.06.

            Original Class B-1 Fractional Interest: As to the first Distribution
Date, the percentage obtained by dividing the sum of the Original Class B-2
Principal Balance, the Original Class B-3 Principal Balance, the Original Class
B-4 Principal Balance, the Original Class B-5 Principal Balance and the Original
Class B-6 Principal Balance by the Aggregate Principal Balance as of the Cut-Off
Date. The Original Class B-1 Fractional Interest is specified in Section 11.08.

            Original Class B-2 Fractional Interest: As to the first Distribution
Date, the percentage obtained by dividing the sum of the Original Class B-3
Principal Balance, the Original Class B-4 Principal Balance, the Original Class
B-5 Principal Balance and the Original Class B-6 Principal Balance by the
Aggregate Principal Balance as of the Cut-Off Date. The Original Class B-2
Fractional Interest is specified in Section 11.09.

            Original Class B-3 Fractional Interest: As to the first Distribution
Date, the percentage obtained by dividing the sum of the Original Class B-4
Principal Balance, the Original Class B-5 Principal Balance and the Original
Class B-6 Principal Balance by the Aggregate Principal Balance as of the Cut-Off
Date. The Original Class B-3 Fractional Interest is specified in Section 11.10.

            Original Class B-4 Fractional Interest: As to the first Distribution
Date, the percentage obtained by dividing the sum of the Original Class B-5
Principal Balance and the Original Class B-6 Principal Balance by the Aggregate
Principal Balance as of the Cut-Off Date. The Original Class B-4 Fractional
Interest is specified in Section 11.11.

            Original Class B-5 Fractional Interest: As to the first Distribution
Date, the percentage obtained by dividing the Original Class B-6 Principal
Balance by the Aggregate Principal Balance as of the Cut-Off Date. The Original
Class B-5 Fractional Interest is specified in Section 11.12.

            Original Class B-1 Percentage: The Class B-1 Percentage as of the
Cut-Off Date, as set forth in Section 11.13.

            Original Class B-2 Percentage: The Class B-2 Percentage as of the
Cut-Off Date, as set forth in Section 11.14.

            Original Class B-3 Percentage: The Class B-3 Percentage as of the
Cut-Off Date, as set forth in Section 11.15.

            Original Class B-4 Percentage: The Class B-4 Percentage as of the
Cut-Off Date, as set forth in Section 11.16.

            Original Class B-5 Percentage: The Class B-5 Percentage as of the
Cut-Off Date, as set forth in Section 11.17.

            Original Class B-6 Percentage: The Class B-6 Percentage as of the
Cut-Off Date, as set forth in Section 11.18.

            Original Class B-1 Principal Balance: The Class B-1 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.07.

            Original Class B-2 Principal Balance: The Class B-2 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.07.

            Original Class B-3 Principal Balance: The Class B-3 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.07.

            Original Class B-4 Principal Balance: The Class B-4 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.07.

            Original Class B-5 Principal Balance: The Class B-5 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.07.

            Original Class B-6 Principal Balance: The Class B-6 Principal
Balance as of the Cut-Off Date, as set forth in Section 11.07.

            Original Principal Balance: Any of the Original Principal Balances
of the Classes of Class A Certificates as set forth in Section 11.04; the
Original Class B-1 Principal Balance, Original Class B-2 Principal Balance,
Original Class B-3 Principal Balance, Original Class B-4 Principal Balance,
Original Class B-5 Principal Balance or Original Class B-6 Principal Balance as
set forth in Section 11.07.

            Original Subordinated Percentage: The Subordinated Percentage as of
the Cut-Off Date, as set forth in Section 11.05.

            Other Servicer: Any of the Servicers other than Wells Fargo Bank.

            Other Servicer Mortgage Loan: Any of the Mortgage Loans, if any,
identified on the Mortgage Loan Schedule as serviced by an Other Servicer, as
such Mortgage Loan Schedule may be amended from time to time in connection with
a substitution pursuant to Section 2.02 or 2.03, which Mortgage Loan is serviced
under an Other Servicing Agreement.

            Other Servicing Agreements: The Servicing Agreements other than the
Wells Fargo Bank Servicing Agreement.

            Outstanding Mortgage Loan: As to any Due Date, a Mortgage Loan
(including an REO Mortgage Loan) which was not the subject of a Full Unscheduled
Principal Receipt prior to such Due Date and which was not repurchased by the
Depositor prior to such Due Date pursuant to Section 2.02, 2.03 or 3.08.

            Owner Mortgage Loan File: A file maintained by the Custodian for
each Mortgage Loan that contains the documents specified in Section 2.01(a) and
any additional documents required to be added to the Owner Mortgage Loan File
pursuant to this Agreement.

            Partial Liquidation Proceeds: Liquidation Proceeds received by a
Servicer prior to the Unscheduled Principal Receipt Period in which the related
Mortgage Loan became a Liquidated Loan.

            Partial Unscheduled Principal Receipt: An Unscheduled Principal
Receipt which is not a Full Unscheduled Principal Receipt.

            Paying Agent: The Person authorized to make distributions to
Certificateholders with respect to the Certificates and to forward to
Certificateholders the periodic and annual statements required by Section 4.04.
The Paying Agent may be the Trustee. The initial Paying Agent is appointed in
Section 4.03(b).

            Paying Agent Agreement: As defined in Section 4.03(b).

            Payment Account: The account maintained pursuant to Section 4.03(a).

            Percentage Interest: With respect to a Class A Certificate of a
Class, the undivided percentage interest obtained by dividing the Denomination
of such Certificate by the Original Principal Balance of such Class of Class A
Certificates. With respect to a Class B Certificate of a Class, the undivided
percentage interest obtained by dividing the Denomination of such Certificate by
the Original Principal Balance of such Class of Class B Certificates.

            Periodic Advance: The aggregate of the advances required to be made
by a Servicer on any Remittance Date pursuant to its Servicing Agreement or by
the Master Servicer or the Trustee hereunder on any Distribution Date, the
amount of any such advances being equal to the total of all Monthly Payments
(adjusted, in each case (i) in respect of interest, to the applicable Mortgage
Interest Rate less the applicable Servicing Fee Rate in the case of Periodic
Advances made by a Servicer and to the applicable Net Mortgage Interest Rate in
the case of Periodic Advances made by the Master Servicer or Trustee and (ii) by
the amount of any related Debt Service Reductions or reductions in the amount of
interest collectable from the Mortgagor pursuant to the Servicemembers Civil
Relief Act, as it may be amended from time to time, or similar legislation or
regulations then in effect) on the Mortgage Loans, that (x) were delinquent as
of the close of business on the related Determination Date, (y) were not the
subject of a previous Periodic Advance by such Servicer or of a Periodic Advance
by the Master Servicer or the Trustee, as the case may be and (z) have not been
determined by the Master Servicer, such Servicer or Trustee to be Nonrecoverable
Advances.

            Periodic Cap: For each Mortgage Loan, the applicable limit on
adjustment of the Mortgage Interest Rate for each Adjustment Date specified in
the applicable Mortgage Note and designated as such in the Mortgage Loan
Schedule.

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

            Plan: As defined in Section 5.02(c).

            Pledge Holder: As defined in the Wells Fargo Bank Servicing
Agreement.

            Pledged Asset Mortgage Loans: The Mortgage Loans listed on Exhibit Q
for which Letters of Credit have been issued.

            PMI Advance: As defined in the related Servicing Agreement, if
applicable.

            Pool Balance: As of any Distribution Date, the sum of the Scheduled
Principal Balances for each Mortgage Loan that is an Outstanding Mortgage Loan.

            Pool Distribution Amount: As of any Distribution Date, the funds
eligible for distribution to the Class A Certificates and Class B Certificates
on such Distribution Date, which shall be the sum of (i) all previously
undistributed payments or other receipts on account of principal and interest on
or in respect of the Mortgage Loans (including, without limitation, the proceeds
of any repurchase of a Mortgage Loan by the Depositor and any Substitution
Principal Amount) received by the Master Servicer with respect to the applicable
Remittance Date in the month of such Distribution Date and any Unscheduled
Principal Receipts received by the Master Servicer on or prior to the Business
Day preceding such Distribution Date, (ii) all Periodic Advances made by a
Servicer pursuant to the related Servicing Agreement or Periodic Advances made
by the Master Servicer or the Trustee pursuant to Section 3.03, (iii) any
remaining Reimbursement Amount as provided in Section 4.01(a) and (iv) all other
amounts (including any Insurance Proceeds and Compensating Interest) required to
be placed in the Certificate Account by the Servicers on or before the
applicable Remittance Date or by the Master Servicer or the Trustee on or prior
to the Distribution Date, but excluding the following:

            (a) amounts received as late payments of principal or interest and
      respecting which the Master Servicer or the Trustee has made one or more
      unreimbursed Periodic Advances;

            (b) the portion of Liquidation Proceeds used to reimburse any
      unreimbursed Periodic Advances by the Master Servicer or the Trustee;

            (c) that portion of each payment of interest on a particular
      Mortgage Loan which represents (i) the Servicing Fee and (ii) the Master
      Servicing Fee;

            (d) all amounts representing scheduled payments of principal and
      interest due after the Due Date occurring in the month in which such
      Distribution Date occurs;

            (e) all Unscheduled Principal Receipts received by the Servicers
      after the Applicable Unscheduled Principal Receipt Period relating to the
      Distribution Date for the applicable type of Unscheduled Principal
      Receipt, and all related payments of interest on such amounts;

            (f) all repurchase proceeds with respect to Mortgage Loans
      repurchased by the Depositor pursuant to Section 2.02, 2.03 or 3.08 on or
      following the Determination Date in the month in which such Distribution
      Date occurs and the Substitution Principal Amounts with respect to any
      Mortgage Loans for which Mortgage Loans were substituted on or following
      the Determination Date in the month in which such Distribution Date
      occurs;

            (g) that portion of Liquidation Proceeds and REO Proceeds which
      represents any unpaid Servicing Fee or Master Servicing Fee;

            (h) all income from Eligible Investments that is held in the
      Certificate Account for the account of the Master Servicer;

            (i) Liquidation Profits;

            (j) Month End Interest;

            (k) all amounts reimbursable to a Servicer for PMI Advances; and

            (l) all other amounts permitted to be withdrawn from the Certificate
      Account, to the extent not covered by clauses (a) through (k) above, or
      not required to be deposited in the Certificate Account under this
      Agreement.

            Pool Scheduled Principal Balance: As to any Distribution Date, the
aggregate Scheduled Principal Balance of all Mortgage Loans that were
Outstanding Mortgage Loans on the Due Date in the month preceding the month of
such Distribution Date.

            Prepayment In Full: With respect to any Mortgage Loan, a Mortgagor
payment consisting of a Principal Prepayment in the amount of the outstanding
principal balance of such loan and resulting in the full satisfaction of such
obligation.

            Prepayment Interest Shortfall: On any Distribution Date, the amount
of interest, if any, that would have accrued on any Mortgage Loan which was the
subject of a Prepayment in Full at the Net Mortgage Interest Rate for such
Mortgage Loan from the date of its Prepayment in Full (but in the case of a
Prepayment in Full where the Applicable Unscheduled Principal Receipt Period is
the Mid-Month Receipt Period, only if the date of the Prepayment in Full is on
or after the Determination Date in the month prior to the month of such
Distribution Date and prior to the first day of the month of such Distribution
Date) through the last day of the month prior to the month of such Distribution
Date.

            Principal Adjustment: In the event that the Class B-1 Optimal
Principal Amount, Class B-2 Optimal Principal Amount, Class B-3 Optimal
Principal Amount, Class B-4 Optimal Principal Amount, Class B-5 Optimal
Principal Amount or Class B-6 Optimal Principal Amount is calculated in
accordance with the proviso in such definition with respect to any Distribution
Date, the Principal Adjustment for such Class of Class B Certificates shall
equal the difference between (i) the amount that would have been distributed to
such Class as principal in accordance with Section 4.01(a) for such Distribution
Date, calculated without regard to such proviso and assuming there are no
Principal Adjustments for such Distribution Date and (ii) the Adjusted Principal
Balance for such Class.

            Principal Balance: As of the first Determination Date and as to any
Class of Class A Certificates, the Original Principal Balance of such Class. As
of any subsequent Determination Date prior to the Subordination Depletion Date
and as to any Class of Class A Certificates, the Original Principal Balance of
such Class less the sum of all amounts previously distributed in respect of such
Class on prior Distribution Dates (i) pursuant to Paragraph third of Section
4.01(a) and (ii) as a result of a Principal Adjustment. After the Subordination
Depletion Date, the Principal Balance of each Class of Class A Certificates will
be reduced (if clause (a) is greater than clause (b)) or increased (if clause
(a) is less than clause (b)) on each Determination Date by an amount equal to
the product of the Class A Loss Percentage of such Class and the difference, if
any, between (a) the Class A Principal Balance as of such Determination Date
without regard to this sentence and (b) the Adjusted Pool Amount for the
preceding Distribution Date.

            As to the Class B Certificates, the Class B-1 Principal Balance,
Class B-2 Principal Balance, Class B-3 Principal Balance, Class B-4 Principal
Balance, Class B-5 Principal Balance and Class B-6 Principal Balance,
respectively.

            Notwithstanding the foregoing, no Principal Balance of a Class will
be increased on any Determination Date such that the Principal Balance of such
Class exceeds its Original Principal Balance less all amounts previously
distributed in respect of such Class on prior Distribution Dates pursuant to
Paragraph third of Section 4.01(a) or Paragraphs sixth, ninth, twelfth,
fifteenth, eighteenth or twenty-first of Section 4.01(a).

            Principal Prepayment: Any Mortgagor payment on a Mortgage Loan which
is received in advance of its Due Date and is not accompanied by an amount
representing scheduled interest for any period subsequent to the date of
prepayment.

            Prior Month Receipt Period: With respect to each Distribution Date,
the calendar month preceding the month in which such Distribution Date occurs.

            Prohibited Transaction Tax: Any tax imposed under Section 860F of
the Code.

            Prospectus: The prospectus dated November 20, 2007 as supplemented
by the prospectus supplement dated November 26, 2007, relating to the Class A,
Class B-1, Class B-2 and Class B-3 Certificates.

            Prudent Servicing Practices: The standard of care set forth in each
Servicing Agreement.

            Rate Ceiling: The maximum per annum Mortgage Interest Rate permitted
under the related Mortgage Note.

            Rating Agency: Any nationally recognized statistical credit rating
agency, or its successor, that rated one or more Classes of the Certificates at
the request of the Depositor at the time of the initial issuance of the
Certificates. The Rating Agencies for the Class A-1 Certificates are Fitch and
Moody's. The Rating Agency for the Class A-R, Class B-1, Class B-2, Class B-3,
Class B-4 and Class B-5 Certificates is Fitch. If any such agency or a successor
is no longer in existence, "Rating Agency" shall be such statistical credit
rating agency, or other comparable Person, designated by the Depositor, notice
of which designation shall be given to the Trustee and the Master Servicer.
References herein to the highest short-term rating category of a Rating Agency
shall mean F-1+ in the case of Fitch and P-1 in the case of Moody's and in the
case of any other Rating Agency shall mean its equivalent of such ratings.
References herein to the highest long-term rating categories of a Rating Agency
shall mean AAA in the case of Fitch and Aaa in the case of Moody's, and in the
case of any other Rating Agency shall mean its equivalent of such ratings
without any plus or minus.

            Realized Losses: With respect to any Distribution Date, (i)
Liquidated Loan Losses incurred on Liquidated Loans for which the Liquidation
Proceeds were received during the Applicable Unscheduled Principal Receipt
Period with respect to Full Unscheduled Principal Receipts with respect to such
Distribution Date and (ii) Bankruptcy Losses incurred during the period
corresponding to the Applicable Unscheduled Principal Receipt Period with
respect to Full Unscheduled Principal Receipts for such Distribution Date.

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

            Recovery: Any amount received (net of any reimbursable expenses) on
a Mortgage Loan subsequent to such Mortgage Loan being determined to be a
Liquidated Loan.

            Regulation AB: Subpart 229.1100 - Asset Backed Securities
(Regulation AB), 17 C.F.R. ss.ss.229.1100-229.1123, as such may be amended from
time to time, and subject to such clarification and interpretation as have been
publicly provided by the Commission in the adopting release (Asset-Backed
Securities, Securities Act Release No. 33-8518, 70 Fed. Reg. 1,506 (Jan. 7,
2005)) or by the staff of the Commission, or as may be provided by the
Commission or its staff from time to time.

            Reimbursement Amount: As defined in Section 2.03(c).

            Relevant Servicing Criteria: The Servicing Criteria applicable to
the Master Servicer, the Trustee, the Custodian or the Servicers, as set forth
on Exhibit R attached hereto and the Servicing Criteria applicable to any
Special Servicer as set forth in the applicable Special Servicing Agreement. For
clarification purposes, multiple parties can have responsibility for the same
Relevant Servicing Criteria. With respect to a Servicing Function Participant
engaged by the Master Servicer, the Trustee, the Custodian, the Special Servicer
(if applicable) or a Servicer, the term "Relevant Servicing Criteria" refers to
the portion of the Relevant Servicing Criteria applicable to the party engaging
such Servicing Function Participant insofar as the functions required to be
performed by such party are to be performed by the Servicing Function
Participant.

            Relief Act Shortfall: Any interest shortfalls arising as a result of
the reduction in the amount of monthly interest payments on any Mortgage Loans
as a result of the application of the Servicemembers Civil Relief Act, as it may
be amended from time to time, or comparable state legislation. Any Relief Act
Shortfall will be allocated to (a) the Class A Certificates according to the
percentage obtained by dividing the Class A Principal Balance by the Aggregate
Principal Balance and (b) the Class B Certificates according to the percentage
obtained by dividing the Class B Principal Balance by the Aggregate Principal
Balance.

            REMIC: A "real estate mortgage investment conduit" as defined in
Code Section 860D. "The REMIC" means the REMIC constituted by the Trust Estate.

            REMIC Provisions: Provisions of the federal income tax law relating
to REMICs, which appear at Sections 860A through 860G of Part IV of Subchapter M
of Chapter 1 of Subtitle A of the Code, and related provisions, and U.S.
Department of the Treasury temporary, proposed or final regulations promulgated
thereunder, as the foregoing are in effect (or with respect to proposed
regulations, are proposed to be in effect) from time to time.

            Remittance Date: As defined in each of the Servicing Agreements.

            REO Mortgage Loan: Any Mortgage Loan which is not a Liquidated Loan
and as to which the indebtedness evidenced by the related Mortgage Note is
discharged and the related Mortgaged Property is held as part of the Trust
Estate.

            REO Proceeds: Proceeds received in respect of any REO Mortgage Loan
(including, without limitation, proceeds from the rental of the related
Mortgaged Property).

            Reportable Event: As defined in Section 3.12(c).

            Repurchase Price: With respect to any Mortgage Loan repurchased
pursuant to Section 2.02, 2.03 or 3.08 hereof, the sum of (a) 100% of the unpaid
principal balance of such Mortgage Loan plus (b) accrued interest at the
Mortgage Interest Rate, through the last day of the month in which such
repurchase takes place.

            Request for Release: A request for release (which may be in
electronic form) in substantially the form attached as Exhibit G hereto.

            Residual Certificate: The Class A-R Certificate.

            Responsible Officer: When used with respect to the Trustee, the
Master Servicer, the Custodian, the Paying Agent or the Authenticating Agent,
any officer of the Corporate Trust Department of the Trustee, the Master
Servicer, the Custodian, the Paying Agent or the Authenticating Agent having
direct responsibility for the administration of this Agreement, including any
Senior Vice President, any Vice President, any Assistant Vice President, any
Assistant Secretary, any Trust Officer or Assistant Trust Officer, or any other
employee of the Trustee, the Master Servicer, the Custodian, the Paying Agent or
the Authenticating Agent customarily performing functions similar to those
performed by any of the above designated officers. When used with respect to a
Servicer, a Servicing Officer.

            Retained Mortgage Loan File: A file maintained by Wells Fargo Bank
prior to any Document Transfer Date for each Mortgage Loan that contains the
documents specified in Section 2.01(b) and any additional documents required to
be added to the Retained Mortgage Loan File pursuant to this Agreement.

            Rule 144A: Rule 144A promulgated under the 1933 Act.

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

            Sarbanes-Oxley Certification: As defined in Section 3.12(b).

            Scheduled Principal Balance: As to any Mortgage Loan and
Distribution Date, the principal balance of such Mortgage Loan as of the Due
Date in the month preceding the month of such Distribution Date as specified in
the amortization schedule at the time relating thereto (before any adjustment to
such amortization schedule by reason of any bankruptcy (other than Deficient
Valuations) or similar proceeding or any moratorium or similar waiver or grace
period or any Capitalized Advance Amounts) after giving effect to (A)
Unscheduled Principal Receipts received or applied by the applicable Servicer
during the related Unscheduled Principal Receipt Period for each applicable type
of Unscheduled Principal Receipt related to the Distribution Date occurring in
the month preceding such Distribution Date, (B) Deficient Valuations incurred
prior to such Due Date and (C) the payment of principal due on such Due Date and
irrespective of any delinquency in payment by the related Mortgagor.
Accordingly, the Scheduled Principal Balance of a Mortgage Loan which becomes a
Liquidated Loan at any time through the last day of such related Unscheduled
Principal Receipt Period shall be zero.

            Servicer Modification: A permanent modification to the terms of a
Mortgage Loan, in accordance with the terms of Section 3.08, as to which the
Mortgagor is in default or as to which, in the judgment of the Servicer, default
is reasonable foreseeable.

            Servicer Mortgage Loan File: As defined in each of the Servicing
Agreements.

            Servicers: Wells Fargo Bank, as a Servicer under the related
Servicing Agreement. Initially the servicing functions performed by Wells Fargo
Bank shall be performed by the Wells Fargo Home Mortgage division of Wells Fargo
Bank.

            Servicing Agreements: Each of the Servicing Agreements executed with
respect to a portion of the Mortgage Loans by one of the Servicers, which
agreements are listed on Exhibit L.

            Servicing Criteria: The "servicing criteria" set forth in Item
1122(d) of Regulation AB, as such may be amended from time to time.

            Servicing Fee: With respect to any Servicer, as defined in its
Servicing Agreement.

            Servicing Fee Rate: With respect to a Mortgage Loan, as set forth in
Section 11.22.

            Servicing Function Participant: Any Subservicer, Subcontractor or
any other Person, other than the Master Servicer, the Trustee, the Custodian,
the Special Servicer (if applicable) and the Servicers, that is performing
activities addressed by the Servicing Criteria.

            Servicing Officer: Any officer of a Servicer involved in, or
responsible for, the administration and servicing of the Mortgage Loans.

            Similar Law: As defined in Section 5.02(c).

            Special Servicer: As defined in Section 3.08.

            Special Servicing Agreement: As defined in Section 3.08.

            Single Certificate: A Certificate of any Class that evidences the
smallest permissible Denomination for such Class, as set forth in Section 11.21.

            Startup Day: As defined in Section 2.05.

            Subcontractor: Any vendor, subcontractor or other Person that is not
responsible for the overall servicing of Mortgage Loans but performs one or more
discrete functions identified in Item 1122(d) of Regulation AB with respect to
Mortgage Loans under the direction or authority of any Servicer (or a
Subservicer of any Servicer), the Master Servicer, the Trustee or the Custodian.

            Subordinated Percentage: As to any Distribution Date, the percentage
which is the difference between 100% and the Class A Percentage for such date.

            Subordinated Prepayment Percentage: As to any Distribution Date, the
percentage which is the difference between 100% and the Class A Prepayment
Percentage for such date.

            Subordination Depletion Date: The Distribution Date preceding the
first Distribution Date on which the Class A Percentage (determined pursuant to
clause (ii) of the definition thereof) equals or exceeds 100%.

            Subordination Depletion Date Interest Shortfall: With respect to any
Distribution Date that occurs on or after the Subordination Depletion Date with
respect to any Unscheduled Principal Receipt (other than a Prepayment in Full or
Curtailment):

            (A)   in the case where the Applicable Unscheduled Principal Receipt
                  Period is the Mid-Month Receipt Period and such Unscheduled
                  Principal Receipt is received by the applicable Servicer on or
                  after the Determination Date in the month preceding the month
                  of such Distribution Date but prior to the first day of the
                  month of such Distribution Date, the amount of interest that
                  would have accrued at the Net Mortgage Interest Rate on the
                  amount of such Unscheduled Principal Receipt from the day of
                  its receipt or, if earlier, its application by such Servicer
                  through the last day of the month preceding the month of such
                  Distribution Date; and

            (B)   in the case where the Applicable Unscheduled Principal Receipt
                  Period is the Prior Month Receipt Period and such Unscheduled
                  Principal Receipt is received by the applicable Servicer
                  during the month preceding the month of such Distribution
                  Date, the amount of interest that would have accrued at the
                  Net Mortgage Interest Rate on the amount of such Unscheduled
                  Principal Receipt from the day of its receipt or, if earlier,
                  its application by such Servicer through the last day of the
                  month in which such Unscheduled Principal Receipt is received.

            Subservicer: Any Person that (i) services Mortgage Loans on behalf
of any Servicer, and (ii) is responsible for the performance (whether directly
or through Subservicers or Subcontractors) of a substantial portion of the
material servicing functions required to be performed under this Agreement, any
related Servicing Agreement or any sub-servicing agreement that are identified
in Item 1122(d) of Regulation AB.

            Subsidy Account: If the Trust Estate contains any Subsidy Loans, the
deposit account or accounts created and maintained by the applicable Servicer
for deposit of Subsidy Funds and amounts payable under interest subsidy
agreements relating to mortgage loans other than the Mortgage Loans.

            Subsidy Funds: If the Trust Estate contains any Subsidy Loans, funds
contributed by the employer of a Mortgagor in order to reduce the payments
required from the Mortgagor for a specified period in specified amounts.

            Subsidy Loan: Any Mortgage Loan subject to a temporary interest
subsidy agreement pursuant to which the monthly interest payments made by the
related Mortgagor will be less than the scheduled monthly interest payments on
such Mortgage Loan, with the resulting difference in interest payments being
provided by the employer of the Mortgagor.

            Substitute Mortgage Loan: As defined in Section 2.02.

            Substitution Principal Amount: With respect to any Mortgage Loan
substituted in accordance with Section 2.02 or pursuant to Section 2.03, the
excess of (x) the unpaid principal balance of the Mortgage Loan which is
substituted for over (y) the unpaid principal balance of the Substitute Mortgage
Loan, each balance being determined as of the date of substitution.

            Trust: The New York common law trust created by this Agreement which
shall be entitled "Wells Fargo Mortgage Backed Securities 2007-AR8 Trust."

            Trust Estate: The corpus of the Trust, consisting of the Mortgage
Loans, such amounts as may be held from time to time in the Certificate Account,
the rights of the Trustee to receive the proceeds of all insurance policies and
performance bonds, if any, required to be maintained hereunder or under the
related Servicing Agreement, property which secured a Mortgage Loan and which
has been acquired by foreclosure or deed in lieu of foreclosure and all other
property and rights described in the first paragraph of Section 2.01(a).

            Trustee: HSBC Bank USA, National Association, a national banking
association, or any successor trustee appointed as herein provided.

            Trustee Errors and Omissions Policy: An insurance policy covering
losses caused by errors or omissions of the Trustee and its personnel.

            Type 1 Mortgage Loan: The Mortgage Loans, if any, identified as such
in the Mortgage Loan Schedule as such Mortgage Loan Schedule may be amended from
time to time in connection with a substitution pursuant to Section 2.02 or 2.03,
serviced under the Wells Fargo Bank Servicing Agreement and having a Mid-Month
Receipt Period with respect to all types of Unscheduled Principal Receipts.

            Type 2 Mortgage Loan: The Mortgage Loans, if any, identified as such
in the Mortgage Loan Schedule as such Mortgage Loan Schedule may be amended from
time to time in connection with a substitution pursuant to Section 2.02 or 2.03,
serviced under the Wells Fargo Bank Servicing Agreement and having a Prior Month
Receipt Period with respect to all types of Unscheduled Principal Receipts.

            Unpaid Interest Shortfalls: Each of the Class A Unpaid Interest
Shortfalls, the Class B-1 Unpaid Interest Shortfall, the Class B-2 Unpaid
Interest Shortfall, the Class B-3 Unpaid Interest Shortfall, the Class B-4
Unpaid Interest Shortfall, the Class B-5 Unpaid Interest Shortfall and the Class
B-6 Unpaid Interest Shortfall.

            Unscheduled Principal Receipt: Any Principal Prepayment or other
recovery of principal on a Mortgage Loan, including, without limitation, the
principal portion of Net Liquidation Proceeds, the principal portion of Net REO
Proceeds, Recoveries and proceeds received from any condemnation award or
proceeds in lieu of condemnation other than that portion of such proceeds
released to the Mortgagor in accordance with the terms of the Mortgage or
Prudent Servicing Practices, but excluding any Liquidation Profits and proceeds
of a repurchase of a Mortgage Loan by the Depositor and any Substitution
Principal Amounts.

            Unscheduled Principal Receipt Period: Either a Mid-Month Receipt
Period or a Prior Month Receipt Period.

            U.S. Person: As defined in Section 4.01(f).

            Voting Interest: With respect to any provisions hereof providing for
the action, consent or approval of the Holders of all Certificates evidencing
specified Voting Interests in the Trust Estate, each Class of Certificates will
be entitled to a pro rata portion of the aggregate Voting Interest equal to the
ratio obtained by dividing the Principal Balance of such Class by the Aggregate
Principal Balance. With respect to any provisions hereof providing for action,
consent or approval of each Class of Certificates or specified Classes of
Certificates, each Certificateholder of a Class will have a Voting Interest
equal to the product of the Voting Interest to which such Class is collectively
entitled and the Percentage Interest in such Class represented by such Holder's
Certificates.

            Wells Fargo Bank: Wells Fargo Bank, N.A., or its successor in
interest.

            Wells Fargo Bank Correspondents: The entities identified on a list
provided by Wells Fargo Bank to the Master Servicer, from which Wells Fargo Bank
purchased the Mortgage Loans.

            Wells Fargo Bank Servicing Agreement: The Servicing Agreement
providing for the servicing of those Mortgage Loans that are initially serviced
by Wells Fargo Bank.

            Section 1.02 Acts of Holders.

            (a) Any request, demand, authorization, direction, notice, consent,
waiver or other action provided by this Agreement to be given or taken by
Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by an agent duly
appointed in writing. Except as herein otherwise expressly provided, such action
shall become effective when such instrument or instruments are delivered to the
Trustee. Proof of execution of any such instrument or of a writing appointing
any such agent shall be sufficient for any purpose of this Agreement and
conclusive in favor of the Trustee, if made in the manner provided in this
Section 1.02. The Trustee shall promptly notify the Master Servicer in writing
of the receipt of any such instrument or writing.

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

            (c) The ownership of Certificates (whether or not such Certificates
shall be overdue and notwithstanding any notation of ownership or other writing
thereon made by anyone other than the Trustee and the Authenticating Agent)
shall be proved by the Certificate Register, and none of the Trustee, the
Depositor or the Master Servicer shall be affected by any notice to the
contrary.

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

            Section 1.03 Effect of Headings and Table of Contents.

            The Article and Section headings in this Agreement and the Table of
Contents are for convenience of reference only and shall not affect the
interpretation or construction of this Agreement.

            Section 1.04 Benefits of Agreement.

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

<PAGE>

                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS;
                      ORIGINAL ISSUANCE OF THE CERTIFICATES

            Section 2.01 Conveyance of Mortgage Loans.

            (a) The Depositor, concurrently with the execution and delivery
hereof, does hereby assign to the Trustee, without recourse all the right, title
and interest of the Depositor in and to (a) the Trust Estate, including all
interest and principal received by the Depositor on or with respect to the
Mortgage Loans after the Cut-Off Date (and including scheduled payments of
principal and interest due after the Cut-Off Date but received by the Depositor
on or before the Cut-Off Date and Unscheduled Principal Receipts received or
applied on the Cut-Off Date, but not including payments of principal and
interest due on the Mortgage Loans on or before the Cut-Off Date), (b) the
Insurance Policies, (c) the obligations of the Servicers under the Servicing
Agreements with respect to the Mortgage Loans, (d) the right to receive amounts,
if any, payable on behalf of any Mortgagor from the Subsidy Account relating to
any Subsidy Loan, (e) all of the Depositor's right, title and interest in and to
the proceeds of the Letters of Credit and (f) proceeds of all the foregoing. It
is agreed and understood by the Depositor and the Trustee that it is not
intended that any mortgage loan be included in the Trust Estate that is a
"High-Cost Home Loan" as defined in any of (i) the New Jersey Home Ownership
Act, effective November 27, 2003, (ii) the New Mexico Home Loan Protection Act,
effective January 1, 2004, (iii) the Massachusetts Predatory Home Loan Practices
Act, effective November 7, 2004 or (iv) the Indiana Home Loan Practices Act,
effective January 1, 2005.

            In connection with such assignment, the Depositor shall, with
respect to each Mortgage Loan, deliver, or cause to be delivered, to the
Custodian, on or before the Closing Date the following documents or instruments
with respect to each Mortgage Loan:

            (i) The original Mortgage Note either (A) endorsed in blank or (B)
      endorsed as provided in Section 2.01(d), with all prior and intervening
      endorsements as may be necessary to show a complete chain of endorsements
      or with respect to any Mortgage Loan as to which the original Mortgage
      Note has been permanently lost or destroyed and has not been replaced, a
      lost note affidavit with a copy of the Mortgage Note and, in the case of
      any Mortgage Loan originated in the State of New York documented by a
      NYCEMA, the NYCEMA, the new Mortgage Note, if applicable, the consolidated
      Mortgage Note and the consolidated Mortgage;

            (ii) A recorded original assignment of the related Mortgage from
      Wells Fargo Bank assigning the related Mortgage to the Trustee (which may
      be assigned in blank), certified by the recording office, or, if such
      assignment is in the process of being recorded, a copy of the related
      Mortgage transmitted for recordation certified by an officer of Wells
      Fargo Bank or applicable Wells Fargo Bank Correspondent to be a true and
      correct copy of such assignment submitted for recordation; provided,
      however, if recordation is not required as described below, an assignment
      in recordable form (which may be assigned in blank) with respect to the
      related Mortgage;

            (iii) The original of each assumption agreement, modification,
      written assurance or substitution agreement pertaining to such Mortgage
      Note, if any; and

            (iv) For each Mortgage Loan secured by Co-op Shares, the originals
      of the following documents or instruments:

                  (a)   The loan security agreement;

                  (b)   The stock certificate;

                  (c)   The stock power, executed in blank;

                  (d)   The executed proprietary lease;

                  (e)   The executed recognition agreement;

                  (f)   The executed UCC-1 financing statement with evidence of
                        recording thereon; and

                  (g)   The executed UCC-3 financing statements or other
                        appropriate UCC financing statements required by state
                        law, evidencing a complete and unbroken chain from the
                        mortgagee to the Trustee with evidence of recording
                        thereon (or in a form suitable for recordation); and

            (v) For each Letter of Credit, the original advice of such Letter of
      Credit endorsed by the Pledge Holder and Wells Fargo Bank's notice of
      transfer (Exhibit A to the Letter of Credit) of beneficiary of such Letter
      of Credit to the Trustee.

            (b) The Master Servicer shall promptly notify the Depositor, the
Trustee and the Custodian of the occurrence of any Document Transfer Event of
which the Master Servicer had knowledge. Following the receipt of such notice,
the Depositor shall, with respect to each Mortgage Loan, deliver, or cause to be
delivered, to the Custodian, no later than the Document Transfer Date, copies
(which may be in electronic form mutually agreed upon by the Depositor and the
Custodian) of the following additional documents or instruments with respect to
each Mortgage Loan; provided, however, that originals of such documents or
instruments shall be delivered to the Custodian if originals are required under
the law in which the related Mortgaged Property is located in order to exercise
all remedies available to the Trust under applicable law following default by
the related Mortgagor:

            (i) The original recorded Mortgage with evidence of recordation
      noted thereon or attached thereto, together with any addenda or riders
      thereto, or a copy of such recorded Mortgage with such evidence of
      recordation certified to be true and correct by the appropriate
      governmental recording office; or a copy of such recorded Mortgage with
      such evidence of recordation, or if the original Mortgage has been
      submitted for recordation but has not been returned from the applicable
      public recording office, a copy of the Mortgage certified by an officer of
      Wells Fargo Bank or the applicable Wells Fargo Bank Correspondent to be a
      true and correct copy of the original Mortgage submitted for recordation;

            (ii) The original of each assumption agreement, modification,
      written assurance or substitution agreement pertaining to such Mortgage,
      if any, or, if such document is in the process of being recorded, a copy
      of such document, certified by an officer of Wells Fargo Bank or the
      applicable Wells Fargo Bank Correspondent of such Mortgage Loan or by the
      applicable title insurance company, closing agent, settlement agent,
      escrow agent or closing attorney to be a true and correct copy of such
      document transmitted for recordation, if any;

            (iii) For each MERS Mortgage Loan that is not a MOM Mortgage Loan,
      the original assignment showing MERS as the assignee of the Mortgage, with
      evidence of recording thereon or copies thereof certified by an officer of
      Wells Fargo Bank or the applicable Wells Fargo Bank Correspondent to have
      been submitted for recordation;

            (iv) Each original recorded intervening assignment of the Mortgage
      as may be necessary to show a complete chain of title from the Mortgage
      Loan originator to Wells Fargo Bank or Wells Fargo Home Mortgage, Inc.,
      with evidence of recordation noted thereon or attached thereto, or a copy
      of such assignment with such evidence of recordation to be true and
      correct by the appropriate governmental recording office, or, if any such
      assignment has been submitted for recordation but has not been returned
      from the applicable public recording office or is not otherwise available,
      a copy of such assignment certified by an officer of Wells Fargo Bank or
      the applicable Wells Fargo Bank Correspondent to be a true and correct
      copy of the recorded assignment submitted for recordation; and

            (v) The original policy of the title insurance or certificate of
      title insurance or a written commitment to issue such a title insurance
      policy or certificate of title insurance, or a copy of such title
      insurance certified as true and correct by the applicable insurer or any
      attorney's certificate of title with an Officer's Certificate of Wells
      Fargo Bank or the applicable Wells Fargo Bank Correspondent that such
      attorney's certificate of title is customarily used in lieu of a title
      insurance policy in the jurisdiction in which the related mortgage
      property is located.

            (c) If any assignment of a Mortgage to the Trustee is in the process
of being recorded on the Closing Date, the Depositor shall use its best efforts
to cause each such original recorded document or certified copy thereof to be
delivered to the Custodian promptly following its recordation, but in no event
later than one (1) year following the Closing Date. If any Mortgage has been
recorded in the name of MERS or its designee, no assignment of Mortgage in favor
of the Trustee will be required to be prepared or delivered and instead, the
Master Servicer shall enforce any obligation of the Servicers under the
Servicing Agreements to take all actions as are necessary to cause the Trust
Estate to be shown as the owner of the related Mortgage Loan on the records of
MERS for the purpose of the system of recording transfers of beneficial
ownership of mortgages maintained by MERS. The Depositor shall also cause to be
delivered to the Custodian any other original mortgage loan document included in
the Owner Mortgage Loan File if a copy thereof has been delivered. The Depositor
shall pay from its own funds, without any right of reimbursement therefor, the
amount of any costs, liabilities and expenses incurred by the Trust Estate by
reason of the failure of the Depositor to cause to be delivered to the Custodian
within one (1) year following the Closing Date any assignment of a Mortgage
(except with respect to any Mortgage recorded in the name of MERS) not delivered
to the Custodian on the Closing Date.

            In lieu of recording an assignment of any Mortgage the Depositor
may, deliver or cause to be delivered to the Custodian the assignment of the
Mortgage Loan to the Trustee in a form suitable for recordation, if (i) with
respect to a particular state the Trustee has received an Opinion of Counsel
acceptable to it that such recording is not required to make the assignment
effective against the parties to the Mortgage or subsequent purchasers or
encumbrances of the Mortgaged Property or (ii) the Depositor has been advised by
each Rating Agency that non-recordation in a state will not result in a
reduction of the rating assigned by that Rating Agency at the time of initial
issuance of the Certificates. Set forth on Exhibit K attached hereto is a list
of all states where recordation is required by either Rating Agency to obtain
the initial ratings of the Certificates. The Custodian may rely and shall be
protected in relying upon the information contained in such Exhibit K. In the
event that the Custodian receives notice that recording is required to protect
the right, title and interest of the Trustee in and to any such Mortgage Loan
for which recordation of an assignment has not previously been required, the
Custodian shall promptly notify the Trustee and the Custodian shall, within five
Business Days (or such other reasonable period of time mutually agreed upon by
the Custodian and the Trustee) of its receipt of such notice, deliver each
previously unrecorded assignment to the related Servicer for recordation.

            (d) Except for Mortgage Notes endorsed in blank, endorsements shall
comply with the following format:

                                WITHOUT RECOURSE
                              PAY TO THE ORDER OF:
                     HSBC BANK USA, NATIONAL ASSOCIATION, AS
                     TRUSTEE under the pooling and servicing
                          agreement dated as of [date];
                         and its successors and assigns,

          [Wells Fargo Bank, N.A.] or [Wells Fargo Home Mortgage, Inc.]
                             [Signature of Officer]
                           [Officer's Name and Title]

            Except where assignments in blank are authorized or in the case of
any Mortgage registered in the name of MERS, assignments of any Mortgage shall
comply with the following:

                     HSBC BANK USA, NATIONAL ASSOCIATION, AS
                                     TRUSTEE
                         and its successors and assigns

            (e) Concurrently with the execution and delivery of this Agreement,
the Depositor shall deliver the Mortgage Loan Schedule to the Trustee, the
Master Servicer and the Custodian. The Depositor and the Master Servicer shall
provide a copy of the Mortgage Loan Schedule to any Certificateholders upon
written request made to it at the addresses set forth on Exhibit F, as the same
may be amended from time to time by written notice from such party to the other
parties hereto.

            Section 2.02 Acceptance by Custodian.

            Subject to the provisions of the following paragraph, pursuant to
the Custodial Agreement, the Custodian, on behalf of the Trustee, will declare
that it holds and will hold the documents delivered to it pursuant to Section
2.01(a) above and the other documents constituting a part of the Owner Mortgage
Loan Files or Retained Mortgage Loan Files (after the occurrence of a Document
Transfer Event) delivered to it in trust, upon the trusts herein set forth, for
the use and benefit of all present and future Certificateholders. Upon execution
of this Agreement, the Custodian will deliver to the Depositor and the Trustee
an initial certification in the form of Exhibit N hereto, to the effect that,
except as may be specified in a list of exceptions attached thereto, it has
received the original Mortgage Notes relating to each Mortgage Loan on the
Mortgage Loan Schedule.

            The Custodian will review each Owner Mortgage Loan File within 45
days after execution of this Agreement. The Custodian will deliver no later than
30 days after completion of such review to the Depositor and the Trustee a final
certification in the form of Exhibit O hereto to the effect that, except as may
be specified in a list of exceptions attached thereto, all required documents
set forth in Section 2.01(a) have been executed and received and appear regular
on their face, and that such documents relate to the Mortgage Loans identified
in the Mortgage Loan Schedule based on a comparison of the Mortgage Loan
identifying number, Mortgagor name and street address, and in so doing the
Custodian may rely on the purported due execution and genuineness of any such
document and on the purported genuineness of any signature thereon.

            If there are exceptions attached to the final certification, the
Depositor shall have a period of 60 days after the date of receipt of the final
certification within which to correct or cure any such defects. The Depositor
hereby covenants and agrees that, if any material defect is not so corrected or
cured, the Depositor will, not later than 60 days after receipt of the final
certification referred to above respecting such defects, either (i) repurchase
the related Mortgage Loan or any property acquired in respect thereof from the
Trust Estate at a price equal to the Repurchase Price or (ii) if within two
years of the Startup Day, or such other period permitted by the REMIC
Provisions, substitute for any Mortgage Loan to which such material defect
relates, a new mortgage loan (a "Substitute Mortgage Loan") having such
characteristics so that the representations and warranties of the Depositor set
forth in Section 2.03(b) hereof (other than Section 2.03(b)(i)) would not have
been incorrect had such Substitute Mortgage Loan originally been a Mortgage
Loan. In no event shall any Substitute Mortgage Loan have an unpaid principal
balance, as of the date of substitution, greater than the Scheduled Principal
Balance (reduced by the scheduled payment of principal due on the Due Date in
the month of substitution) of the Mortgage Loan for which it is substituted. In
addition, such Substitute Mortgage Loan (i) shall have a Loan-to-Value Ratio
less than or equal to and a Net Mortgage Interest Rate equal to that of the
Mortgage Loan for which it is substituted, (ii) shall have the same Gross Margin
and Index as that of the Mortgage Loan for which it is substituted and (iii)
shall have the same frequency of mortgage rate adjustment as that of the
Mortgage Loan for which it is substituted.

            The Depositor shall determine the Repurchase Price or the
eligibility of any Substitute Mortgage Loan and the Trustee shall be protected
in relying on such determination.

            In the case of a repurchased Mortgage Loan or property, the
Repurchase Price shall be deposited by the Depositor in the Certificate Account
maintained by the Master Servicer pursuant to Section 3.01. In the case of a
Substitute Mortgage Loan, the Owner Mortgage Loan File (and Retained Mortgage
Loan File, if required pursuant to Section 2.01(b) hereof) relating thereto
shall be delivered to the Custodian and the Substitution Principal Amount (if
any), together with (i) interest on such Substitution Principal Amount at the
applicable Net Mortgage Interest Rate to the following Due Date of such Mortgage
Loan which is being substituted for and (ii) an amount equal to the aggregate
amount of unreimbursed Periodic Advances in respect of interest previously made
by the applicable Servicer, the Master Servicer or the Trustee with respect to
such Mortgage Loan, shall be deposited in the Certificate Account. The Monthly
Payment on the Substitute Mortgage Loan for the Due Date in the month of
substitution shall not be part of the Trust Estate. Upon receipt by the
Custodian of a Request for Release signed by an officer of the Depositor, the
Custodian shall release to the Depositor the Owner Mortgage Loan File (and
Retained Mortgage Loan File, if applicable) of the Mortgage Loan being removed.
The Trustee shall execute and deliver such instrument of transfer or assignment
(or, in the case of a Mortgage Loan registered in the name of MERS or its
designee, the Master Servicer shall enforce the obligation of the applicable
Servicer under the related Servicing Agreement to take all necessary action to
reflect such assignment on the records of MERS), in each case without recourse,
as shall be necessary to vest in the Depositor legal and beneficial ownership of
such substituted or repurchased Mortgage Loan or property. It is understood and
agreed that the obligation of the Depositor to substitute a new Mortgage Loan
for or repurchase any Mortgage Loan or property as to which such a material
defect in a constituent document exists shall constitute the sole remedy
respecting such defect available to the Certificateholders or the Trustee on
behalf of the Certificateholders. The failure of the Custodian to give the final
certification or the Trustee to give any notice within the required time periods
shall not affect or relieve the Depositor's obligation to repurchase any
Mortgage Loan pursuant to this Section 2.02.

            The Trustee shall be responsible for enforcing the Depositor's
obligations under this Section 2.02. If the Trustee receives written notice from
the Custodian or the Master Servicer that the defect is not cured by the
Depositor within 60 days after the Trustee's notice, the Trustee shall enforce
the Depositor's obligation to repurchase such Mortgage Loan or substitute for
such Mortgage Loan in accordance with the provisions of this Section 2.02. In
connection with any substitution permitted by this Section 2.02, the Master
Servicer shall verify that the unpaid principal balance and the Loan-to-Value
Ratio of the Substitute Mortgage Loan satisfy the requirements of this Section
2.02.

            Section 2.03 Representations and Warranties of the Master Servicer
                         and the Depositor.

            (a) The Master Servicer hereby represents and warrants to the
Trustee for the benefit of the Certificateholders that, as of the date of
execution of this Agreement:

            (i) The Master Servicer is a national banking association duly
      chartered and validly existing in good standing under the laws of the
      United States;

            (ii) The execution and delivery of this Agreement by the Master
      Servicer and its performance and compliance with the terms of this
      Agreement will not violate the Master Servicer's corporate charter or
      by-laws 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 contract, agreement or other instrument to which
      the Master Servicer is a party or which may be applicable to the Master
      Servicer or any of its assets;

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

            (iv) The Master Servicer is not in default with respect to any order
      or decree of any court or any order, regulation or demand of any federal,
      state, municipal or governmental agency, which default might have
      consequences that would materially and adversely affect the condition
      (financial or other) or operations of the Master Servicer or its
      properties or might have consequences that would materially affect its
      performance hereunder;

            (v) Except as otherwise disclosed in the Prospectus, no legal or
      governmental proceedings are pending (or known to be contemplated) against
      the Master Servicer that would be material to Certificateholders;

            (vi) Except as otherwise disclosed in the Prospectus, the Master
      Servicer is not aware and has not received notice that any default, early
      amortization or other performance triggering event has occurred as to any
      other securitization due to any act or failure to act of the Master
      Servicer under such securitization;

            (vii) Except as otherwise disclosed in the Prospectus, the Master
      Servicer has not been terminated as master servicer in a residential
      mortgage loan securitization, either due to a master servicing default or
      to application of a master servicing performance test or trigger;

            (viii) Except as otherwise disclosed in the Prospectus or otherwise
      in writing provided by the Master Servicer to the Depositor, there has
      been no material noncompliance with the applicable servicing criteria with
      respect to other securitizations of residential mortgage loans involving
      the Master Servicer as a master servicer within the past three (3) years;

            (ix) Except as otherwise disclosed in the Prospectus, no material
      changes to the Master Servicer's policies or procedures with respect to
      the master servicing function it will perform under this Agreement for
      mortgage loans of a type similar to the Mortgage Loans have occurred
      during the three-year period immediately preceding the date of this
      Agreement;

            (x) Except as otherwise disclosed in the Prospectus, there is no
      material risk that the Master Servicer's financial condition could affect
      one or more aspects of the performance by the Master Servicer of its
      master servicing obligations under this Agreement in a manner that could
      have a material impact on the performance of the Mortgage Loans or the
      Certificates; and

            (xi) Except as disclosed in the Prospectus, there are no
      affiliations, relationships or transactions relating to the Master
      Servicer and any party identified in Item 1119 of Regulation AB of the
      type described therein.

            It is understood and agreed that the representations and warranties
set forth in this Section 2.03(a) shall survive delivery of the respective Owner
Mortgage Loan Files to the Trustee or the Custodian. Upon discovery by any of
the Depositor, the Master Servicer or the Trustee of a breach of any of the
representations and warranties set forth in this Section 2.03(a), the party
discovering such breach shall give prompt written notice, which shall not exceed
two days, to the other parties. The Master Servicer shall consult with the
Depositor to determine if any such breach is material and any breach determined
by the Depositor to be material shall be included by the Master Servicer on the
next Distribution Date Statement prepared pursuant to Section 4.04.

            (b) The Depositor hereby represents and warrants to the Trustee for
the benefit of Certificateholders that, as of the date of execution of this
Agreement, with respect to the Mortgage Loans, or each Mortgage Loan, as the
case may be:

            (i) The information set forth in the Mortgage Loan Schedule was true
      and correct in all material respects at the date or dates respecting which
      such information is furnished as specified in the Mortgage Loan Schedule;

            (ii) Immediately prior to the transfer and assignment contemplated
      herein, the Depositor was the sole owner and holder of the Mortgage Loan
      free and clear of any and all liens, pledges, charges or security
      interests of any nature and has full right and authority to sell and
      assign the same;

            (iii) The Mortgage is a valid, subsisting and enforceable first lien
      on the property therein described, and the Mortgaged Property is free and
      clear of all encumbrances and liens having priority over the first lien of
      the Mortgage except for liens for real estate taxes and special
      assessments not yet due and payable and liens or interests arising under
      or as a result of any federal, state or local law, regulation or ordinance
      relating to hazardous wastes or hazardous substances, and, if the related
      Mortgaged Property is a condominium unit, any lien for common charges
      permitted by statute or homeowners association fees; and if the Mortgaged
      Property consists of shares of a cooperative housing corporation, any lien
      for amounts due to the cooperative housing corporation for unpaid
      assessments or charges or any lien of any assignment of rents or
      maintenance expenses secured by the real property owned by the cooperative
      housing corporation; and any security agreement, chattel mortgage or
      equivalent document related to, and delivered to the Trustee or to the
      Custodian with, any Mortgage establishes in the Depositor a valid and
      subsisting first lien on the property described therein and the Depositor
      has full right to sell and assign the same to the Trustee;

            (iv) Neither the Depositor nor any prior holder of the Mortgage or
      the related Mortgage Note has modified the Mortgage or the related
      Mortgage Note in any material respect, satisfied, canceled or subordinated
      the Mortgage in whole or in part, released the Mortgaged Property in whole
      or in part from the lien of the Mortgage, or executed any instrument of
      release, cancellation, modification or satisfaction, except in each case
      as is reflected in an agreement delivered to the Trustee or the Custodian
      pursuant to Section 2.01(a);

            (v) All taxes, governmental assessments, insurance premiums, and
      water, sewer and municipal charges, which previously became due and owing
      have been paid, or an escrow of funds has been established, to the extent
      permitted by law, in an amount sufficient to pay for every such item which
      remains unpaid; and the Depositor has not advanced funds, or received any
      advance of funds by a party other than the Mortgagor, directly or
      indirectly (except pursuant to any Subsidy Loan arrangement) for the
      payment of any amount required by the Mortgage, except for interest
      accruing from the date of the Mortgage Note or date of disbursement of the
      Mortgage Loan proceeds, whichever is later, to the day which precedes by
      thirty days the first Due Date under the related Mortgage Note;

            (vi) The Mortgaged Property is undamaged by water, fire, earthquake,
      earth movement other than earthquake, windstorm, flood, tornado or similar
      casualty (excluding casualty from the presence of hazardous wastes or
      hazardous substances, as to which the Depositor makes no representations),
      in a manner which would adversely affect the value of the Mortgaged
      Property as security for the Mortgage Loan or the use for which the
      premises were intended and to the best of the Depositor's knowledge, there
      is no proceeding pending or threatened for the total or partial
      condemnation of the Mortgaged Property;

            (vii) The Mortgaged Property is free and clear of all mechanics' and
      materialmen's liens or liens in the nature thereof; provided, however,
      that this warranty shall be deemed not to have been made at the time of
      the initial issuance of the Certificates if a title policy affording, in
      substance, the same protection afforded by this warranty is furnished to
      the Trustee by the Depositor;

            (viii) Except for Mortgage Loans secured by Co-op Shares and
      Mortgage Loans secured by residential long-term leases, the Mortgaged
      Property consists of a fee simple estate in real property; all of the
      improvements which are included for the purpose of determining the
      appraised value of the Mortgaged Property lie wholly within the boundaries
      and building restriction lines of such property and no improvements on
      adjoining properties encroach upon the Mortgaged Property (unless insured
      against under the related title insurance policy); and to the best of the
      Depositor's knowledge, the Mortgaged Property and all improvements thereon
      comply with all requirements of any applicable zoning and subdivision laws
      and ordinances;

            (ix) The Mortgage Loan meets, or is exempt from, applicable state,
      federal or local laws, regulations and other requirements, pertaining to
      usury, and the Mortgage Loan is not usurious;

            (x) To the best of the Depositor's knowledge, all inspections,
      licenses and certificates required to be made or issued with respect to
      all occupied portions of the Mortgaged Property and, with respect to the
      use and occupancy of the same, including, but not limited to, certificates
      of occupancy and fire underwriting certificates, have been made or
      obtained from the appropriate authorities;

            (xi) All payments required to be made up to the Due Date immediately
      preceding the Cut-Off Date for such Mortgage Loan under the terms of the
      related Mortgage Note have been made and no Mortgage Loan had more than
      one delinquency in the 12 months preceding the Cut-Off Date;

            (xii) The Mortgage Note, the related Mortgage and other agreements
      executed in connection therewith are genuine, and each is the legal, valid
      and binding obligation of the maker thereof, enforceable in accordance
      with its terms, except as such enforcement may be limited by bankruptcy,
      insolvency, reorganization or other similar laws affecting the enforcement
      of creditors' rights generally and by general equity principles
      (regardless of whether such enforcement is considered in a proceeding in
      equity or at law); and, to the best of the Depositor's knowledge, all
      parties to the Mortgage Note and the Mortgage had legal capacity to
      execute the Mortgage Note and the Mortgage and each Mortgage Note and
      Mortgage has been duly and properly executed by the Mortgagor;

            (xiii) Each Mortgage Loan at the time it was originated complied in
      all material respects with applicable federal, state and local laws
      including, without limitation, truth-in-lending, real estate settlement
      procedures, consumer credit protection, equal credit opportunity,
      predatory and abusive lending laws and disclosure laws;

            (xiv) The proceeds of the Mortgage Loans have been fully disbursed,
      there is no requirement for future advances thereunder and any and all
      requirements as to completion of any on-site or off-site improvements and
      as to disbursements of any escrow funds therefor have been complied with
      (except for escrow funds for exterior items which could not be completed
      due to weather and escrow funds for the completion of swimming pools); and
      all costs, fees and expenses incurred in making, closing or recording the
      Mortgage Loan have been paid, except recording fees with respect to
      Mortgages not recorded as of the Closing Date;

            (xv) The Mortgage Loan (except any Mortgage Loan secured by a
      Mortgaged Property located in any jurisdiction, as to which an opinion of
      counsel of the type customarily rendered in such jurisdiction in lieu of
      title insurance is instead received) is covered by an American Land Title
      Association mortgagee title insurance policy or other generally acceptable
      form of policy or insurance acceptable to Fannie Mae or Freddie Mac,
      issued by a title insurer acceptable to Fannie Mae or Freddie Mac insuring
      the originator, its successors and assigns, as to the first priority lien
      of the Mortgage in the original principal amount of the Mortgage Loan and
      subject only to (A) the lien of current real property taxes and
      assessments not yet due and payable, (B) covenants, conditions and
      restrictions, rights of way, easements and other matters of public record
      as of the date of recording of such Mortgage acceptable to mortgage
      lending institutions in the area in which the Mortgaged Property is
      located or specifically referred to in the appraisal performed in
      connection with the origination of the related Mortgage Loan, (C) liens
      created pursuant to any federal, state or local law, regulation or
      ordinance affording liens for the costs of clean-up of hazardous
      substances or hazardous wastes or for other environmental protection
      purposes and (D) such other matters to which like properties are commonly
      subject which do not individually, or in the aggregate, materially
      interfere with the benefits of the security intended to be provided by the
      Mortgage; the Depositor is the sole insured of such mortgagee title
      insurance policy, the assignment to the Trustee of the Depositor's
      interest in such mortgagee title insurance policy does not require any
      consent of or notification to the insurer which has not been obtained or
      made, such mortgagee title insurance policy is in full force and effect
      and will be in full force and effect and inure to the benefit of the
      Trustee, no claims have been made under such mortgagee title insurance
      policy, and no prior holder of the related Mortgage, including the
      Depositor, has done, by act or omission, anything which would impair the
      coverage of such mortgagee title insurance policy;

            (xvi) The Mortgaged Property securing each Mortgage Loan is insured
      by an insurer acceptable to Fannie Mae or Freddie Mac against loss by fire
      and such hazards as are covered under a standard extended coverage
      endorsement, in an amount which is not less than the lesser of 100% of the
      insurable value of the Mortgaged Property and the outstanding principal
      balance of the Mortgage Loan, but in no event less than the minimum amount
      necessary to fully compensate for any damage or loss on a replacement cost
      basis; if the Mortgaged Property is a condominium unit, it is included
      under the coverage afforded by a blanket policy for the project; if upon
      origination of the Mortgage Loan, the improvements on the Mortgaged
      Property were in an area identified in the Federal Register by the Federal
      Emergency Management Agency as having special flood hazards, a flood
      insurance policy meeting the requirements of the current guidelines of the
      Federal Insurance Administration is in effect with a generally acceptable
      insurance carrier, in an amount representing coverage not less than the
      least of (A) the outstanding principal balance of the Mortgage Loan, (B)
      the full insurable value of the Mortgaged Property and (C) the maximum
      amount of insurance which was available under the National Flood Insurance
      Act of 1968, as amended; and each Mortgage obligates the Mortgagor
      thereunder to maintain all such insurance at the Mortgagor's cost and
      expense;

            (xvii) To the best of the Depositor's knowledge, there is no
      default, breach, violation or event of acceleration existing under the
      Mortgage or the related Mortgage Note and no event which, with the passage
      of time or with notice and the expiration of any grace or cure period,
      would constitute a default, breach, violation or event of acceleration;
      the Depositor has not waived any default, breach, violation or event of
      acceleration; and no foreclosure action is currently threatened or has
      been commenced with respect to the Mortgage Loan;

            (xviii) No Mortgage Note or Mortgage is subject to any right of
      rescission, set-off, counterclaim or defense, including the defense of
      usury, nor will the operation of any of the terms of the Mortgage Note or
      Mortgage, or the exercise of any right thereunder, render the Mortgage
      Note or Mortgage unenforceable, in whole or in part, or subject it to any
      right of rescission, set-off, counterclaim or defense, including the
      defense of usury, and no such right of rescission, set-off, counterclaim
      or defense has been asserted with respect thereto;

            (xix) Each Mortgage Note is payable in monthly payments, resulting
      in complete amortization of the Mortgage Loan over a term of not more than
      360 months;

            (xx) Each Mortgage contains customary and enforceable provisions
      such as to render the rights and remedies of the holder thereof adequate
      for the realization against the Mortgaged Property of the benefits of the
      security, including realization by judicial foreclosure (subject to any
      limitation arising from any bankruptcy, insolvency or other law for the
      relief of debtors), and there is no homestead or other exemption available
      to the Mortgagor which would interfere with such right of foreclosure;

            (xxi) To the best of the Depositor's knowledge, no Mortgagor is a
      debtor in any state or federal bankruptcy or insolvency proceeding;

            (xxii) Each Mortgaged Property is located in the United States and
      consists of a one- to four-unit residential property, which may include a
      detached home, townhouse, condominium unit or a unit in a planned unit
      development or, in the case of Mortgage Loans secured by Co-op Shares,
      leases or occupancy agreements;

            (xxiii) The Mortgage Loan is a "qualified mortgage" within the
      meaning of Section 860G(a)(3) of the Code;

            (xxiv) With respect to each Mortgage where a lost note affidavit has
      been delivered to the Custodian in place of the related Mortgage Note, the
      related Mortgage Note is no longer in existence;

            (xxv) In the event that the Mortgagor is an inter vivos "living"
      trust, (i) such trust is in compliance with Fannie Mae or Freddie Mac
      standards for inter vivos trusts and (ii) holding title to the Mortgaged
      Property in such trust will not diminish any rights as a creditor
      including the right to full title to the Mortgaged Property in the event
      foreclosure proceedings are initiated;

            (xxvi) If the Mortgage Loan is secured by a long-term residential
      lease, (1) the lessor under the lease holds a fee simple interest in the
      land; (2) the terms of such lease expressly permit the mortgaging of the
      leasehold estate, the assignment of the lease without the lessor's consent
      and the acquisition by the holder of the Mortgage of the rights of the
      lessee upon foreclosure or assignment in lieu of foreclosure or provide
      the holder of the Mortgage with substantially similar protections; (3) the
      terms of such lease do not (a) allow the termination thereof upon the
      lessee's default without the holder of the Mortgage being entitled to
      receive written notice of, and opportunity to cure, such default, (b)
      allow the termination of the lease in the event of damage or destruction
      as long as the Mortgage is in existence, (c) prohibit the holder of the
      Mortgage from being insured (or receiving proceeds of insurance) under the
      hazard insurance policy or policies relating to the Mortgaged Property or
      (d) permit any increase in rent other than pre-established increases set
      forth in the lease; (4) the original term of such lease is not less than
      15 years; (5) the term of such lease does not terminate earlier than five
      years after the maturity date of the Mortgage Note; and (6) the Mortgaged
      Property is located in a jurisdiction in which the use of leasehold
      estates in transferring ownership in residential properties is a widely
      accepted practice;

            (xxvii) No Mortgage Loan is a "high cost" loan as defined under any
      federal, state or local law applicable to such Mortgage Loan at the time
      of its origination;

            (xxviii) No Mortgage Loan is serviced by the Trustee or an affiliate
      of the Trustee; and

            (xxix) No Mortgage Loan (other than a Mortgage Loan that is a New
      Jersey covered purchase loan) is a High Cost Loan or Covered Loan, as
      applicable (as such terms are defined in the then current S&P's LEVELS(R)
      Glossary which is now Version 6.1, Appendix E) and no Mortgage Loan
      originated on or after October 1, 2002 through March 6, 2003 is governed
      by the Georgia Fair Lending Act.

            Notwithstanding the foregoing, no representations or warranties are
made by the Depositor as to the environmental condition of any Mortgaged
Property; the absence, presence or effect of hazardous wastes or hazardous
substances on any Mortgaged Property; any casualty resulting from the presence
or effect of hazardous wastes or hazardous substances on, near or emanating from
any Mortgaged Property; the impact on Certificateholders of any environmental
condition or presence of any hazardous substance on or near any Mortgaged
Property; or the compliance of any Mortgaged Property with any environmental
laws, nor is any agent, person or entity otherwise affiliated with the Depositor
authorized or able to make any such representation, warranty or assumption of
liability relative to any Mortgaged Property. In addition, no representations or
warranties are made by the Depositor with respect to the absence or effect of
fraud in the origination of any Mortgage Loan.

            It is understood and agreed that the representations and warranties
set forth in this Section 2.03(b) shall survive delivery of the respective Owner
Mortgage Loan Files (and Retained Mortgage Loan Files, if applicable) to the
Custodian and shall inure to the benefit of the Trustee notwithstanding any
restrictive or qualified endorsement or assignment.

            (c) Upon discovery by any of the Depositor, the Master Servicer, the
Trustee or the Custodian that any of the representations and warranties made in
subsection (b) above is not accurate (referred to herein as a "breach") and,
except for a breach of the representation and warranty set forth in subsection
(b)(i), where such breach is a result of the Cut-Off Date Principal Balance of a
Mortgage Loan being greater, by $1,000 or greater, than the Cut-Off Date
Principal Balance of such Mortgage Loan indicated on the Mortgage Loan Schedule,
that such breach materially and adversely affects the interests of the
Certificateholders in the related Mortgage Loan, the party discovering such
breach shall give prompt written notice (not to exceed two days after discovery)
to the other parties to this Agreement and the Custodian (any Custodian being so
obligated under a Custodial Agreement). Within 60 days of the earlier of its
discovery or its receipt of notice of any such breach, the Depositor shall cure
such breach in all material respects or shall either (i) repurchase the Mortgage
Loan or any property acquired in respect thereof from the Trust Estate at a
price equal to the Repurchase Price; provided that if the Depositor elects to
repurchase a Mortgage Loan due to a breach of the representation and warranty
set forth in subsection (b)(i), where such breach is a result of the Cut-Off
Date Principal Balance of a Mortgage Loan being greater, by $1,000 or greater,
than the Cut-Off Date Principal Balance of such Mortgage Loan indicated on the
Mortgage Loan Schedule, such repurchase is only permitted within 90 days of the
Closing Date or (ii) if within two years of the Startup Day, or such other
period permitted by the REMIC Provisions, substitute for such Mortgage Loan in
the manner described in Section 2.02. In addition to the foregoing, if a breach
of the representation set forth in clause (b)(xiii) or (xxix) of this Section
2.03 occurs as a result of a violation of an applicable predatory or abusive
lending law, the Depositor shall reimburse the Trust for all costs and damages
including, but not limited to, reasonable attorneys' fees and costs, incurred by
the Trust as a result of the violation of such law (such amount, the
"Reimbursement Amount"). The Repurchase Price, the Substitution Principal
Amount, if any, plus accrued interest thereon and the other amounts referred to
in Section 2.02, and any Reimbursement Amount shall be deposited in the
Certificate Account. It is understood and agreed, except with respect to the
second preceding sentence, that the obligation of the Depositor to repurchase or
substitute for any Mortgage Loan or property as to which such a breach has
occurred and is continuing shall constitute the sole remedy respecting such
breach available to Certificateholders or the Trustee on behalf of
Certificateholders, and such obligation shall survive until termination of the
Trust Estate hereunder.

            The Trustee shall be responsible for enforcing the Depositor's
obligations under this Section 2.03. If the Trustee receives written notice from
the Master Servicer or the Custodian that such breach is not cured by the
Depositor within 60 days after the Trustee's notice, the Trustee shall enforce
the Depositor's obligation to repurchase such Mortgage Loan or substitute for
such Mortgage Loan in accordance with the provisions of this Section 2.03. In
connection with any substitution permitted by this Section 2.03, the Master
Servicer shall verify that the unpaid principal balance and the Loan-to-Value
Ratio of the Substitute Mortgage Loan satisfy the requirements of this Section
2.03.

            Section 2.04 Execution and Delivery of Certificates.

            The Trustee acknowledges the assignment to it of the Mortgage Loans
and acknowledges the delivery of the Owner Mortgage Loan Files to the Custodian,
on behalf of the Trustee. The Paying Agent, concurrently with such delivery, has
executed and delivered to or upon the order of the Depositor, in exchange for
the Mortgage Loans, together with all other assets included in the definition of
"Trust Estate," receipt of which is hereby acknowledged, Certificates in
authorized denominations which evidence ownership of the entire Trust Estate.

            Section 2.05 Designation of Certificates; Designation of Startup Day
                         and Latest Possible Maturity Date.

            The Depositor hereby designates the Classes of Class A Certificates
(other than the Residual Certificate) and the Classes of Class B Certificates as
classes of "regular interests" and the Residual Certificate as the single class
of "residual interest" in the REMIC for the purposes of Code Sections 860G(a)(1)
and 860G(a)(2), respectively. The Closing Date is hereby designated as the
"Startup Day" of the REMIC within the meaning of Code Section 860G(a)(9). The
"latest possible maturity date" of the regular interests in the REMIC is
November 25, 2037 for purposes of Code Section 860G(a)(1).

<PAGE>

                                   ARTICLE III

                  ADMINISTRATION OF THE TRUST ESTATE; SERVICING
                              OF THE MORTGAGE LOANS

            Section 3.01 Certificate Account.

            (a) The Master Servicer shall establish and maintain a Certificate
Account for the deposit of funds received by the Master Servicer with respect to
the Mortgage Loans serviced by each Servicer pursuant to each of the Servicing
Agreements. Such account shall be maintained as an Eligible Account. The Master
Servicer shall give notice to each Servicer and the Depositor of the location of
the Certificate Account and of any change in the location thereof.

            (b) The Master Servicer shall deposit into the Certificate Account
on the day of receipt thereof all amounts received by it from any Servicer
pursuant to any of the Servicing Agreements and amounts received from draws on
any Letters of Credit and shall, in addition, deposit into the Certificate
Account the following amounts, in the case of amounts specified in clauses (i)
and (iii), not later than the Business Day preceding the Distribution Date on
which such amounts are required to be distributed to Certificateholders and, in
the case of the amounts specified in clause (ii), not later than the Business
Day next following the day of receipt and posting by the Master Servicer:

            (i) Periodic Advances pursuant to Section 3.03(a) made by the Master
      Servicer or the Trustee, if any, and any amounts deemed received by the
      Master Servicer pursuant to Section 3.01(d);

            (ii) in the case of any Mortgage Loan that is repurchased by the
      Depositor pursuant to Section 2.02, 2.03, 3.08 or 9.01 or that is
      auctioned by the Master Servicer pursuant to Section 3.08, the purchase
      price therefor or, where applicable, any Substitution Principal Amount and
      any amounts received in respect of the interest portion of unreimbursed
      Periodic Advances; and

            (iii) any Compensating Interest for such Distribution Date.

            (c) The Master Servicer may cause the funds in the Certificate
Account to be invested in Eligible Investments. No such Eligible Investments
will be sold or disposed of at a gain prior to maturity unless the Master
Servicer has received an Opinion of Counsel or other evidence satisfactory to it
that such sale or disposition will not cause the Trust Estate to be subject to
Prohibited Transactions Tax, otherwise subject the Trust Estate to tax, or cause
the Trust Estate to fail to qualify as a REMIC while any Certificates are
outstanding. Any amounts deposited in the Certificate Account prior to the
Distribution Date may be invested for the account of the Master Servicer and any
investment income thereon shall be additional compensation to the Master
Servicer for services rendered under this Agreement. The amount of any losses
incurred in respect of any such investments shall be deposited in the
Certificate Account by the Master Servicer out of its own funds immediately as
realized, without any right of reimbursement therefor from the Trust Estate.

            (d) For purposes of this Agreement, the Master Servicer will be
deemed to have received from a Servicer on the applicable Remittance Date for
such funds all amounts deposited by such Servicer into the Custodial P&I Account
maintained in accordance with the applicable Servicing Agreement, if such
Custodial P&I Account is not an Eligible Account as defined in this Agreement,
to the extent such amounts are not actually received by the Master Servicer on
such Remittance Date as a result of the bankruptcy, insolvency, receivership or
other financial distress of the depository institution in which such Custodial
P&I Account is being held. To the extent that amounts so deemed to have been
received by the Master Servicer are subsequently remitted to the Master
Servicer, the Master Servicer shall be entitled to retain such amounts.

            Section 3.02 Permitted Withdrawals from the Certificate Account.

            (a) The Master Servicer may, from time to time, make withdrawals
from the Certificate Account for the following purposes (limited, in the case of
Servicer reimbursements, to cases where funds in the respective Custodial P&I
Account are not sufficient therefor):

            (i) to reimburse the Master Servicer or the Trustee for Periodic
      Advances made by the Master Servicer or the Trustee pursuant to Section
      3.03(a) or any Servicer for Periodic Advances made and Capitalized Advance
      Amounts created pursuant to any Servicing Agreement with respect to
      previous Distribution Dates, such right to reimbursement pursuant to this
      subclause (i) being limited to amounts received on or in respect of
      particular Mortgage Loans (including, for this purpose, Liquidation
      Proceeds, REO Proceeds and proceeds from the purchase, sale, repurchase or
      substitution of Mortgage Loans pursuant to Section 2.02, 2.03, 3.08 or
      9.01) with respect to which such Periodic Advances were made or
      Capitalized Advance Amounts were created;

            (ii) to reimburse any Servicer, the Master Servicer or the Trustee
      for any Periodic Advances determined in good faith to have become
      Nonrecoverable Advances;

            (iii) to reimburse the Master Servicer or any Servicer from
      Liquidation Proceeds for Liquidation Expenses and for amounts expended by
      the Master Servicer or any Servicer pursuant hereto or to any Servicing
      Agreement, respectively, in good faith in connection with the restoration
      of damaged property or for foreclosure expenses;

            (iv) from any Mortgagor payment on account of interest or other
      recovery (including Net REO Proceeds) with respect to a particular
      Mortgage Loan, to pay the Master Servicing Fee with respect to such
      Mortgage Loan to the Master Servicer;

            (v) to reimburse the Master Servicer, any Servicer or the Trustee
      (or, in certain cases, the Depositor) for expenses incurred by it
      (including taxes paid on behalf of the Trust Estate) and recoverable by or
      reimbursable to it pursuant to Section 3.03(c), Section 6.03, the second
      or third paragraphs of Section 8.06 or the third sentence of Section
      8.13(a) or pursuant to such Servicer's Servicing Agreement, provided such
      expenses are "unanticipated" within the meaning of the REMIC Provisions;

            (vi) to pay to the Depositor or other purchaser with respect to each
      Mortgage Loan or property acquired in respect thereof that has been
      repurchased or replaced pursuant to Section 2.02, 2.03, 3.08 or 9.01 or
      auctioned pursuant to Section 3.08, all amounts received thereon and not
      required to be distributed as of the date on which the related repurchase
      or purchase price or Scheduled Principal Balance was determined;

            (vii) to remit funds to the Paying Agent in the amounts and in the
      manner provided for herein;

            (viii) to pay to the Master Servicer any interest earned on or
      investment income with respect to funds in the Certificate Account;

            (ix) to pay to the Master Servicer or any Servicer out of
      Liquidation Proceeds allocable to interest the amount of any unpaid Master
      Servicing Fee or Servicing Fee (as adjusted pursuant to the related
      Servicing Agreement) and any unpaid assumption fees, late payment charges
      or other Mortgagor charges on the related Mortgage Loan;

            (x) to pay to the Master Servicer as additional master servicing
      compensation any Liquidation Profits which a Servicer is not entitled to
      pursuant to the applicable Servicing Agreement;

            (xi) to withdraw from the Certificate Account any amount deposited
      in the Certificate Account that was not required to be deposited therein;
      and

            (xii) to clear and terminate the Certificate Account pursuant to
      Section 9.01.

            (b) The Master Servicer shall keep and maintain separate accounting,
on a Mortgage Loan by Mortgage Loan basis, for the purpose of justifying any
payment to and withdrawal from the Certificate Account. The Master Servicer
shall notify the Depositor and the Trustee of the amount, purpose and party paid
pursuant to Section 3.02(a)(v).

            Section 3.03 Advances by Master Servicer and Trustee.

            (a) In the event an Other Servicer fails to make any required
Periodic Advances of principal and interest on a Mortgage Loan as required by
the related Other Servicing Agreement prior to the Business Day preceding the
Distribution Date occurring in the month during which such Periodic Advance is
due, the Master Servicer shall make Periodic Advances to the extent provided
hereby. In the event Wells Fargo Bank in its capacity as Servicer fails to make
any required Periodic Advances of principal and interest on a Mortgage Loan as
required by the Wells Fargo Bank Servicing Agreement prior to the Business Day
preceding the Distribution Date occurring in the month during which such
Periodic Advance is due, the Trustee shall, to the extent required by Section
8.14, make such Periodic Advance to the extent provided hereby, provided that
the Trustee has previously received the certificate of the Master Servicer
described in the following sentence. The Master Servicer shall certify to the
Trustee with respect to any such Distribution Date (i) the amount of Periodic
Advances required of Wells Fargo Bank in its capacity as Servicer or such Other
Servicer, as the case may be, (ii) the amount actually advanced by Wells Fargo
Bank in its capacity as Servicer or such Other Servicer, (iii) the amount that
the Trustee or Master Servicer is required to advance hereunder and (iv) whether
the Master Servicer has determined that it reasonably believes that such
Periodic Advance is a Nonrecoverable Advance. Amounts advanced by the Trustee or
Master Servicer shall be deposited in the Certificate Account on the Business
Day preceding the related Distribution Date. Notwithstanding the foregoing,
neither the Master Servicer nor the Trustee will be obligated to make a Periodic
Advance that it reasonably believes to be a Nonrecoverable Advance. The Trustee
may conclusively rely for any determination to be made by it hereunder upon the
determination of the Master Servicer as set forth in its certificate.

            (b) To the extent an Other Servicer fails to make an advance on
account of the taxes or insurance premiums with respect to a Mortgage Loan
required pursuant to the related Other Servicing Agreement, the Master Servicer
shall, if the Master Servicer has actual knowledge of such failure of the
Servicer, advance such funds and take such steps as are necessary to pay such
taxes or insurance premiums. To the extent Wells Fargo Bank in its capacity as
Servicer fails to make an advance on account of the taxes or insurance premiums
with respect to a Mortgage Loan required pursuant to the Wells Fargo Bank
Servicing Agreement, the Master Servicer shall, if the Master Servicer knows of
such failure of Wells Fargo Bank in its capacity as Servicer, certify to the
Trustee that such failure has occurred. Upon receipt of such certification, the
Trustee shall advance such funds and take such steps as are necessary to pay
such taxes or insurance premiums.

            (c) The Master Servicer and the Trustee shall each be entitled to be
reimbursed from the Certificate Account for any Periodic Advance made by it
under Section 3.03(a) to the extent described in Section 3.02(a)(i) and (a)(ii).
The Master Servicer and the Trustee shall be entitled to be reimbursed pursuant
to Section 3.02(a)(v) for any advance by it pursuant to Section 3.03(b). The
Master Servicer shall diligently pursue restoration of such amount to the
Certificate Account from the related Servicer. The Master Servicer shall, to the
extent it has not already done so, upon the request of the Trustee, withdraw
from the Certificate Account and remit to the Trustee any amounts to which the
Trustee is entitled as reimbursement pursuant to Section 3.02 (a)(i), (ii) and
(v).

            (d) Except as provided in Section 3.03(a) and (b), neither the
Master Servicer nor the Trustee shall be required to pay or advance any amount
which any Servicer was required, but failed, to deposit in the Certificate
Account.

            Section 3.04 Custodian to Cooperate;
                         Release of Owner Mortgage Loan Files and
                         Retained Mortgage Loan Files.

            In connection with the deposit by a Servicer into the Certificate
Account of the proceeds from a Liquidated Loan or of a Prepayment in Full, the
Master Servicer or applicable Servicer shall confirm that all amounts required
to be remitted to the Certificate Account in connection with such Mortgage Loan
have been so deposited, and the Master Servicer or applicable Servicer shall
deliver two copies of any related Request for Release to the Custodian. The
Custodian shall, within five Business Days of its receipt of such a Request for
Release, release the related Owner Mortgage Loan File (and Retained Mortgage
Loan File, if applicable) to the Master Servicer or such Servicer, as requested
by the Master Servicer or such Servicer. No expenses incurred in connection with
any instrument of satisfaction or deed of reconveyance shall be chargeable to
the Certificate Account.

            From time to time and as appropriate for the servicing or
foreclosure of any Mortgage Loan, including but not limited to, collection under
any insurance policies, or to effect a partial release of any Mortgaged Property
from the lien of the Mortgage, the Servicer of such Mortgage Loan shall deliver
to the Master Servicer or Custodian two copies of a Request for Release. Upon
the Master Servicer's receipt of any such Request for Release, the Master
Servicer shall promptly forward such request in hard copy or in electronic
format acceptable to the Custodian. The Custodian shall, within five Business
Days, release the related Owner Mortgage Loan File (and Retained Mortgage Loan
File, if applicable) to the Master Servicer or such Servicer. Any such Request
for Release shall obligate the Master Servicer or such Servicer, as the case may
be, to return the Owner Mortgage Loan File (and Retained Mortgage Loan File, if
applicable) to the Custodian by the sixtieth day following the release thereof,
unless (i) the Mortgage Loan has been liquidated and the Liquidation Proceeds
relating to the Mortgage Loan have been deposited in the Certificate Account or
(ii) the Owner Mortgage Loan File (and Retained Mortgage Loan File, if
applicable) or such document has been delivered to an attorney, or to a public
trustee or other public official as required by law, for purposes of initiating
or pursuing legal action or other proceedings for the foreclosure of the
Mortgaged Property either judicially or non-judicially. Upon receipt of two
copies of a Request for Release stating that such Mortgage Loan was liquidated
and that all amounts received or to be received in connection with such
liquidation which are required to be deposited into the Certificate Account have
been so deposited, or that such Mortgage Loan has become an REO Mortgage Loan,
the Custodian shall amend its records.

            Upon the occurrence of the event specified in clause (ii) of the
preceding paragraph, the Trustee shall execute and deliver to the Master
Servicer or such Servicer, as directed by the Master Servicer, court pleadings,
requests for trustee's sale or other documents necessary to the foreclosure or
trustee's sale in respect of a Mortgaged Property or to any legal action brought
to obtain judgment against any Mortgagor on the Mortgage Note or Mortgage or to
obtain a deficiency judgment, or to enforce any other remedies or rights
provided by the Mortgage Note or Mortgage or otherwise available at law or in
equity. Each such 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
proceeding or trustee's sale.

            Section 3.05 Annual Compliance Statements.

            The Master Servicer shall deliver in electronic form, or otherwise
make available to the Depositor and the Trustee, and the Master Servicer shall
cause each Additional Master Servicer engaged by it and each Servicer to
deliver, in electronic form, or otherwise make available, to the Master
Servicer, the Trustee and each Rating Agency on or before March 5 of each year
or if such day is not a Business Day, the next Business Day (with a 10 calendar
day cure period, but in no event later than March 15), commencing in March 2008,
a copy of a certificate (followed by a hard copy to the party or parties
receiving such certificate within 10 calendar days) in the form required by Item
1123 of Regulation AB, to the effect that (i) an authorized officer of the
Master Servicer, the Additional Master Servicer or the applicable Servicer, as
the case may be, has reviewed (or a review has been made under his or her
supervision of) such party's activities under this Agreement or the applicable
Servicing Agreement, in the case of a Servicer, or such other applicable
agreement in the case of an Additional Master Servicer, during the prior
calendar year or portion thereof and (ii) to the best of such officer's
knowledge, based on such review, such party has fulfilled all of its obligations
under this Agreement or the applicable Servicing Agreement, in the case of a
Servicer, or such other applicable agreement in the case of an Additional Master
Servicer, in all material respects throughout the prior calendar year or portion
thereof or, if there has been a failure to fulfill any such obligation in any
material respect, specifying each such failure known to such officer and the
nature and status thereof. If any of the certificates delivered pursuant to this
Section 3.05 disclose that there has been a failure to fulfill any obligation in
any material respect then the Master Servicer shall promptly notify the
Depositor and forward a copy of such certificate to the Depositor, and the
Depositor shall review such certificate and, if applicable, consult with the
Master Servicer as to the nature of any failure to fulfill any obligation under
this Agreement or the applicable Servicing Agreement, in the case of a Servicer,
or such other applicable agreement in the case of an Additional Master Servicer,
in any material respect.

            Section 3.06 Title, Management and Disposition of Any REO Mortgage
                         Loan.

            The Master Servicer shall enforce the obligations of the applicable
Servicer to administer each REO Mortgage Loan at all times so that each REO
Mortgage Loan qualifies as "foreclosure property" under the REMIC Provisions and
that it does not earn any "net income from foreclosure property" which is
subject to tax under the REMIC Provisions. In the event that a Servicer is
unable to dispose of any REO Mortgage Loan within the period mandated by each of
the Servicing Agreements, the Master Servicer shall monitor such Servicer to
verify that such REO Mortgage Loan is auctioned to the highest bidder within the
period so specified. In the event of any such sale of a REO Mortgage Loan, the
Custodian shall, at the written request of the Master Servicer and upon being
supported with appropriate forms therefor, within five Business Days of the
deposit by the Master Servicer of the proceeds of such sale or auction into the
Certificate Account, release or cause to be released to the entity identified by
the Master Servicer the related Owner Mortgage Loan File, Retained Mortgage Loan
File, if applicable, and Servicer Mortgage Loan File and shall execute and
deliver such instruments of transfer or assignment, in each case without
recourse, as shall be necessary to vest in the auction purchaser title to the
REO Mortgage Loan and the Custodian shall have no further responsibility with
regard to such Owner Mortgage Loan File, Retained Mortgage Loan File, if
applicable, or Servicer Mortgage Loan File. Neither the Trustee, the Master
Servicer nor any Servicer, acting on behalf of the Trust Estate, shall provide
financing from the Trust Estate to any purchaser of an REO Mortgage Loan.

            Section 3.07 Amendments to Servicing Agreements,
                         Modification of Standard Provisions.

            (a) Subject to the prior written consent of the Trustee pursuant to
Section 3.07(b) and the prior written consent of the Depositor, the Master
Servicer may, from time to time, to the extent permitted by the applicable
Servicing Agreement, make such modifications and amendments to such Servicing
Agreement as the Master Servicer deems necessary or appropriate to confirm or
carry out more fully the intent and purpose of such Servicing Agreement and the
duties, responsibilities and obligations to be performed by the applicable
Servicer thereunder. Such modifications may only be made if they are consistent
with the REMIC Provisions, as evidenced by an Opinion of Counsel. Prior to the
issuance of any modification or amendment, the Master Servicer shall deliver to
the Trustee and the Depositor such Opinion of Counsel and an Officer's
Certificate setting forth (i) the provision that is to be modified or amended,
(ii) the modification or amendment that the Master Servicer desires to issue and
(iii) the reason or reasons for such proposed amendment or modification.

            (b) The Trustee shall consent to any amendment or supplement to a
Servicing Agreement proposed by the Master Servicer pursuant to Section 3.07(a),
which consent and amendment shall not require the consent of any
Certificateholder if it is (i) for the purpose of curing any mistake or
ambiguity, to further effect or protect the rights of the Certificateholders or
(ii) for any other purpose, provided such amendment or supplement for such other
purpose cannot reasonably be expected to adversely affect Certificateholders.
The lack of reasonable expectation of an adverse effect on Certificateholders
may be established through the delivery to the Trustee of (i) an Opinion of
Counsel to such effect or (ii) written notification from each Rating Agency to
the effect that such amendment or supplement will not result in reduction of the
current rating assigned by that Rating Agency to the Certificates.
Notwithstanding the two immediately preceding sentences, the Trustee may, in its
discretion, decline to enter into or consent to any such supplement or amendment
if its own rights, duties or immunities shall be adversely affected.

            (c)(i) Notwithstanding anything to the contrary in this Section
3.07, the Master Servicer from time to time may, without the consent of any
Certificateholder or the Trustee, enter into an amendment (A) to an Other
Servicing Agreement for the purpose of (i) eliminating or reducing Month End
Interest and (ii) providing for the remittance of Full Unscheduled Principal
Receipts by the applicable Servicer to the Master Servicer not later than the
24th day of each month (or if such day is not a Business Day, on the previous
Business Day), (B) to the Wells Fargo Bank Servicing Agreement for the purpose
of changing the applicable Remittance Date to the 18th day of each month (or if
such day is not a Business Day, on the previous Business Day) or (C) to a
Servicing Agreement for the purpose of effecting or facilitating compliance by
the applicable Servicer with Regulation AB or to conform a Servicing Agreement
to industry practices relating to Regulation AB.

            (ii) The Master Servicer may direct Wells Fargo Bank in its capacity
as Servicer to enter into an amendment to the Wells Fargo Bank Servicing
Agreement for the purposes described in Section 3.07(c)(i)(B) or (C).

            Section 3.08 Oversight of Servicing.

            The Master Servicer shall supervise, monitor and oversee the
servicing of the Mortgage Loans by each Servicer and the performance by each
Servicer of all services, duties, responsibilities and obligations (including
the obligation to maintain an Errors and Omissions Policy and Fidelity Bond)
that are to be observed or performed by the Servicer under its respective
Servicing Agreement. In performing its obligations hereunder, the Master
Servicer shall act in a manner consistent with Accepted Master Servicing
Practices and in a manner consistent with the terms and provisions of any
insurance policy required to be maintained by the Master Servicer or any
Servicer pursuant to this Agreement or any Servicing Agreement. The Master
Servicer acknowledges that prior to taking certain actions required to service
the Mortgage Loans, each Servicing Agreement provides that the Servicer
thereunder must notify, consult with, obtain the consent of, waiver from, or
otherwise follow the instructions of the Master Servicer. In the case of any
request for waiver from a Servicer, the Master Servicer shall promptly instruct
such Servicer or otherwise respond to such Servicer's request. The Master
Servicer shall not waive compliance by a Servicer with those provisions of its
Servicing Agreement which are required to enable the Depositor and the Master
Servicer to satisfy the Trust's ongoing reporting obligations under the Exchange
Act. In addition, in no event will the Master Servicer instruct such Servicer to
take any action, give any consent to action by such Servicer or waive compliance
by such Servicer with any provision of such Servicer's Servicing Agreement if
any resulting action or failure to act would be inconsistent with the
requirements of the Rating Agencies that rated the Certificates, would be
inconsistent with the requirements of Regulation AB or would otherwise have an
adverse effect on the Certificateholders. Any such action or failure to act
shall be deemed to have an adverse effect on the Certificateholders if such
action or failure to act either results in (i) the downgrading of the rating
assigned by either Rating Agency to the Certificates, (ii) the loss by the Trust
Estate of REMIC status for federal income tax purposes or (iii) the imposition
of any Prohibited Transaction Tax or any federal taxes on either the REMIC or
the Trust Estate. The Master Servicer shall have full power and authority in its
sole discretion to take any action with respect to the Trust Estate as may be
necessary or advisable to avoid the circumstances specified including clause
(ii) or (iii) of the preceding sentence.

            For the purposes of determining whether any modification of a
Mortgage Loan shall be permitted by the Master Servicer, such modification shall
be construed as a substitution of the modified Mortgage Loan for the Mortgage
Loan originally deposited in the Trust Estate if it would be a "significant
modification" within the meaning of Section 1.860G-2(b) of the regulations of
the U.S. Department of the Treasury. No modification shall be approved unless
(i) the modified Mortgage Loan would qualify as a Substitute Mortgage Loan under
Section 2.02 and (ii) with respect to any modification that occurs more than
three months after the Closing Date and is not the result of a default or a
reasonably foreseeable default under the Mortgage Loan, there is delivered to
the Trustee an Opinion of Counsel (at the expense of the party seeking to modify
the Mortgage Loan) to the effect that such modification would not be treated as
giving rise to a new debt instrument for federal income tax purposes as
described in the preceding sentence; provided, however, that no such Opinion of
Counsel need be delivered if the sole purpose of the modification is to reduce
the Monthly Payment on a Mortgage Loan as a result of a Curtailment such that
the Mortgage Loan is fully amortized by its original maturity date.

            During the term of this Agreement, the Master Servicer shall consult
fully with each Servicer as may be necessary from time to time to perform and
carry out the Master Servicer's obligations hereunder and otherwise exercise
reasonable efforts to cause such Servicer to perform and observe the covenants,
obligations and conditions to be performed or observed by it under its Servicing
Agreement.

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

            The Master Servicer shall administer the Trust Estate on behalf of
the Trustee and shall have full power and authority, acting alone or (subject to
the requirements of Section 6.06) through one or more Subcontractors, to do any
and all things in connection with such administration which it may deem
necessary or desirable. Upon the execution and delivery of this Agreement, and
from time to time as may be required thereafter, the Trustee shall furnish the
Master Servicer or its Subcontractors with any powers of attorney and such other
documents as may be necessary or appropriate to enable the Master Servicer to
carry out its administrative duties hereunder.

            The Depositor shall have a limited option to repurchase any
defaulted Mortgage Loan or REO Mortgage Loan during the following time periods:
(i) beginning on the first day of the second month following the month in which
the Master Servicer has reported that a Servicer has initiated foreclosure
proceedings with respect to such a defaulted Mortgage Loan, with such repurchase
option expiring on the last day of such second following month; (ii) beginning
on the first day of the second month following the month in which the Master
Servicer has reported that such defaulted Mortgage Loan has become an REO
Mortgage Loan, with such repurchase option expiring on the last day of such
second following month; and (iii) beginning on the day on which a Servicer
accepts a contractual commitment by a third party to purchase the Mortgaged
Property related to the defaulted Mortgage Loan or REO Mortgage Loan, with such
repurchase option expiring on the earlier of the last day of the month in which
such contractual commitment was accepted by the Servicer or the day immediately
prior to the day on which the closing occurs with respect to such third party
purchase of the Mortgaged Property related to the defaulted Mortgage Loan or REO
Mortgage Loan. The Depositor shall be entitled to repurchase at its option any
Mortgage Loan in the Trust Estate which, pursuant to paragraph 5(b) of the
Mortgage Loan Purchase Agreement, Wells Fargo Bank requests the Depositor to
repurchase and to sell to Wells Fargo Bank to facilitate the exercise of Wells
Fargo Bank's rights against the originator or a prior holder of such Mortgage
Loan. The purchase price for any Mortgage Loan repurchased pursuant to this
paragraph shall be the Repurchase Price. Upon the receipt of such Repurchase
Price, the Master Servicer shall provide to the Trustee the certification
required by Section 3.04 and the Trustee and the Custodian, if any, shall
promptly release to the Depositor the Owner Mortgage Loan File and Retained
Mortgage Loan File, if applicable, relating to the Mortgage Loan being
repurchased.

            In the event that (i) the Master Servicer determines at any time
that, notwithstanding the representations and warranties set forth in Section
2.03(b), any Mortgage Loan is not a "qualified mortgage" within the meaning of
Section 860G of the Code and (ii) the Trustee is unable to enforce the
obligation of the Depositor to purchase such Mortgage Loan pursuant to Section
2.02 within two months of such determination, the Master Servicer shall cause
such Mortgage Loan to be auctioned to the highest bidder and sold out of the
Trust Estate no later than the date 90 days after such determination. In the
event of any such sale of a Mortgage Loan, the Custodian shall, at the written
request of the Master Servicer and upon being supported with appropriate forms
therefor, within five Business Days of the deposit by the Master Servicer of the
proceeds of such auction into the Certificate Account, release or cause to be
released to the entity identified by the Master Servicer the related Owner
Mortgage Loan File, Retained Mortgage Loan File, if applicable, and Servicer
Mortgage Loan File and shall execute and deliver such instruments of transfer or
assignment, in each case without recourse, as shall be necessary to vest in the
auction purchaser title to the Mortgage Loan and the Custodian shall have no
further responsibility with regard to such Owner Mortgage Loan File, Retained
Mortgage Loan File, if applicable, or Servicer Mortgage Loan File. None of the
Trustee, the Custodian, the Master Servicer or any Servicer, acting on behalf of
the Trustee, shall provide financing from the Trust Estate to any purchaser of a
Mortgage Loan.

            The Master Servicer, on behalf of the Trustee, shall, pursuant to
the Servicing Agreements, object to the foreclosure upon, or other related
conversion of the ownership of, any Mortgaged Property by the related Servicer
if (i) the Master Servicer believes such Mortgaged Property may be contaminated
with or affected by hazardous wastes or hazardous substances or (ii) such
Servicer does not agree to administer such Mortgaged Property, once the related
Mortgage Loan becomes an REO Mortgage Loan, in a manner which would not result
in a federal tax being imposed upon the Trust Estate or the REMIC.

            At the direction of the Depositor, the Master Servicer may enter
into a special servicing agreement with an unaffiliated holder of 100%
Percentage Interest of a Class of Class B Certificates or a holder of a class of
securities representing interests in the Class B Certificates and/or other
subordinated mortgage pass-through certificates (such entity, a "Special
Servicer"), such agreement (a "Special Servicing Agreement") to be substantially
in the form of Exhibit M hereto or subject to each Rating Agency's
acknowledgment that the ratings of the Certificates in effect immediately prior
to the entering into of such agreement would not be qualified, downgraded or
withdrawn and the Certificates would not be placed on credit review status
(except for possible upgrading) as a result of such agreement. Any such
agreement may contain provisions whereby such holder may (a) purchase any
Mortgage Loans that are more than 180 days delinquent and (b) instruct the
Master Servicer to instruct a Servicer to the extent provided in the applicable
Servicing Agreement to commence or delay foreclosure proceedings with respect to
delinquent Mortgage Loans and will contain provisions for the deposit of cash by
the holder that would be available for distribution to Certificateholders if
Liquidation Proceeds are less than they otherwise may have been had the Servicer
acted in accordance with its normal procedures.

            The Master Servicer shall monitor the rating of Wells Fargo &
Company and upon the occurrence of a Document Transfer Event relating to such
rating, shall promptly notify the Depositor, Trustee and Custodian of the
occurrence of such Document Transfer Event.

            Section 3.09 Termination and Substitution of Servicing Agreements.

            Upon the occurrence of any event for which a Servicer may be
terminated pursuant to its Servicing Agreement, the Master Servicer shall
promptly deliver to the Depositor and the Trustee an Officer's Certificate
certifying that an event has occurred which may justify termination of such
Servicing Agreement, describing the circumstances surrounding such event and
recommending what action should be taken by the Trustee with respect to such
Servicer. If the Master Servicer recommends that such Servicing Agreement be
terminated, the Master Servicer's certification must state that the breach is
material and not merely technical in nature. Based upon such certification, the
Master Servicer, or if provided by the applicable Other Servicing Agreement and
upon written direction of the Master Servicer, the Trustee, shall promptly
terminate such Other Servicing Agreement. The Trustee shall terminate the Wells
Fargo Bank Servicing Agreement in accordance with the provisions of Article 19
thereof. The Master Servicer shall indemnify the Trustee and hold it harmless
from and against any and all claims, liabilities, costs and expenses (including,
without limitation, reasonable attorneys' fees) arising out of, or assessed
against the Trustee in connection with termination of a Servicing Agreement at
the direction of the Master Servicer except to the extent that such claims,
liabilities, costs and expenses are incurred as a result of the bad faith,
willful misfeasance or gross negligence of the Trustee in the performance of its
obligations hereunder. To the extent that the costs and expenses (including any
amounts paid by the Master Servicer pursuant to the immediately preceding
sentence) of the Master Servicer related to any termination of an Other
Servicer, appointment of a successor servicer to an Other Servicer or the
transfer and assumption of servicing by the Master Servicer with respect to any
Other Servicing Agreement (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 an Other Servicer as a result of an
event of default by such Other Servicer, (ii) all costs and expenses associated
with the complete transfer of 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 servicer to correct any errors or
insufficiencies in the servicing data or otherwise to enable the successor
servicer to service the Mortgage Loans in accordance with the related Other
Servicing Agreement and (iii) any costs incurred by the Trustee in connection
with a servicing transfer) are not fully and timely reimbursed by the terminated
Other Servicer, the Master Servicer shall be entitled to reimbursement of such
costs and expenses from the Certificate Account. To the extent that the costs
and expenses of the Trustee related to any termination of Wells Fargo Bank, as a
Servicer under the Wells Fargo Bank Servicing Agreement, appointment of a
successor to Wells Fargo Bank as a Servicer or the transfer and assumption of
servicing by the Trustee with respect to the Wells Fargo Bank Servicing
Agreement (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 Wells Fargo Bank as a Servicer as a result of an event
of default by Wells Fargo Bank as Servicer and (ii) all costs and expenses
associated with the complete transfer of 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 servicer to correct any
errors or insufficiencies in the servicing data or otherwise to enable the
successor servicer to service the Mortgage Loans in accordance with the Wells
Fargo Bank Servicing Agreement) are not fully and timely reimbursed by Wells
Fargo Bank as a Servicer, the Trustee shall be entitled to reimbursement of such
costs and expenses from the Certificate Account. If the Master Servicer or
Trustee terminates an Other Servicing Agreement, the Trustee may enter into a
substitute Servicing Agreement with the Master Servicer or, at the Master
Servicer's nomination, with another mortgage loan service company acceptable to
the Trustee, the Master Servicer and each Rating Agency under which the Master
Servicer or such substitute servicer, as the case may be, shall assume, satisfy,
perform and carry out all liabilities, duties, responsibilities and obligations
that are to be, or otherwise were to have been, satisfied, performed and carried
out by such Servicer under such terminated Servicing Agreement. If the Trustee
terminates the Wells Fargo Bank Servicing Agreement, the Trustee shall enter
into a substitute Servicing Agreement with another mortgage loan service company
acceptable to the Trustee and each Rating Agency under which such substitute
servicer shall assume, satisfy, perform and carry out all liabilities, duties,
responsibilities and obligations that are to be, or otherwise were to have been,
satisfied, performed and carried out by Wells Fargo Bank, in its capacity as
Servicer, under such terminated Servicing Agreement. It is understood and
acknowledged by the parties hereto that there will be a period of transition not
to exceed ninety (90) days before the servicing functions can be transferred to
such substitute servicer. Until such time as the Trustee enters into a
substitute servicing agreement with respect to the Mortgage Loans previously
serviced by an Other Servicer and the transition period relating to the transfer
of such servicing expires, the Master Servicer shall assume, satisfy, perform
and carry out all obligations which otherwise were to have been satisfied,
performed and carried out by an Other Servicer under its terminated Servicing
Agreement. However, in no event shall the Master Servicer be deemed to have
assumed the obligations of a Servicer to advance payments of principal and
interest on a delinquent Mortgage Loan in excess of the Master Servicer's
independent Periodic Advance obligation under Section 3.03 of this Agreement. As
compensation for the Master Servicer of any servicing obligations fulfilled or
assumed by the Master Servicer, the Master Servicer shall be entitled to any
servicing compensation to which a Servicer would have been entitled if the
Servicing Agreement with such Servicer had not been terminated.

            Section 3.10 Application of Net Liquidation Proceeds.

            For all purposes under this agreement, Net Liquidation Proceeds
received from a Servicer shall be allocated first to accrued and unpaid interest
on the related Mortgage Loan and then to the unpaid principal balance thereof.

            Section 3.11 Assessment of Servicing Compliance; Registered Public
                         Accounting Firm Attestation Reports.

            (a) The Master Servicer, at its own expense, shall furnish to the
Depositor, and the Trustee, any Special Servicer (if applicable) and the
Custodian, at their own expense, shall furnish, or otherwise make available, and
shall cause any Servicing Function Participant engaged by any such party to
furnish, and the Master Servicer shall use reasonable effort to cause each
Servicer to furnish with respect to such Servicer and each Servicing Function
Participant engaged by such Servicer and identified to the Master Servicer, at
such party's expense, to the Master Servicer, not later than March 5 of each
year, or if such day is not a Business Day, the next Business Day (with a 10 day
cure period, but in no event later than March 15), commencing in March 2008, a
copy of a report, followed by a hard copy to the Master Servicer within 10
calendar days, signed by an authorized officer of the Master Servicer, the
Trustee, the Custodian, the Servicing Function Participant, the Special Servicer
(if applicable) or the applicable Servicer, as applicable, on assessment of
compliance with, at a minimum, the Relevant Servicing Criteria that contains:

            (i) a statement by such party of its responsibility for assessing
      compliance with the Servicing Criteria applicable to it;

            (ii) a statement that such party used the Servicing Criteria
      applicable to it to assess compliance with the Servicing Criteria;

            (iii) such party's assessment of compliance with the Servicing
      Criteria applicable to it as of and for the preceding fiscal year,
      including, if there had been any material instance of noncompliance with
      the Servicing Criteria applicable to it, identifying each such failure and
      the nature and status thereof; and

            (iv) a statement that a registered public accounting firm has issued
      an attestation report on such party's assessment of compliance with the
      Servicing Criteria applicable to it as of and for the preceding fiscal
      year;

provided, however that no such assessment shall be required with respect to any
Servicing Function Participant who would not be considered a separate "party
participating in the servicing function" for purposes of Item 1122 of Regulation
AB, as then interpreted by the Commission. In the event of any disagreement
among any of the parties hereto regarding the application of the Commission's
interpretation to a particular Servicing Function Participant, the determination
of the Master Servicer shall be binding.

            No later than 30 days following the end of each fiscal year, the
Master Servicer shall forward to the Depositor the name of each Servicing
Function Participant engaged by it and what Relevant Servicing Criteria will be
addressed in the report on assessment of compliance prepared by such Servicing
Function Participant. When the Master Servicer submits its assessments to the
Depositor, it will also at such time include the assessment (and attestation
pursuant to Section 3.11(b)) of each Servicing Function Participant engaged by
it.

            No later than 30 days following the end of each fiscal year, each of
the Trustee, any Special Servicer (if applicable) and the Custodian (so long as
the Custodian is not the Master Servicer) shall forward to the Master Servicer
the name of each Servicing Function Participant engaged by it and what Relevant
Servicing Criteria will be addressed in the report on assessment of compliance
prepared by such Servicing Function Participant. When the Trustee, any Special
Servicer (if applicable) and the Custodian (so long as the Custodian is not the
Master Servicer) submit their assessments to the Master Servicer, each such
party will also at such time include the assessment (and attestation pursuant to
Section 3.11(b)) of each Servicing Function Participant engaged by it.

            The Master Servicer shall confirm that the assessments address the
Relevant Servicing Criteria for each party as set forth on Exhibit R or in the
applicable Servicing Agreement or the applicable Special Servicing Agreement and
shall notify the Depositor of any exceptions and deliver the assessment of
compliance containing such exceptions. Promptly after receipt of each such
report on assessment of compliance, the Depositor shall review each such report
and, if applicable, consult with the Master Servicer, the Trustee, the
Custodian, any Special Servicer (if applicable) and any Servicing Function
Participant as to the nature of any material instance of noncompliance with the
Relevant Servicing Criteria by the Master Servicer, the Trustee, the Custodian,
any Servicer, any Special Servicer (if applicable), or any Servicing Function
Participant engaged by such parties.

            (b) The Master Servicer, at its own expense, shall cause a
registered public accounting firm which is a member of the Institute of
Certified Public Accountants to furnish to the Depositor, and each of the
Trustee, the Custodian and any Special Servicer (if applicable) at their own
expense, shall cause, and shall cause any Servicing Function Participant engaged
by any such party from which an assessment of servicing compliance is required
pursuant to Section 3.11 (a), at such party's expense, to cause, and the Master
Servicer shall use reasonable efforts to cause each Servicer, at such Servicer's
expense, with respect to such Servicer and each Servicing Function Participant
engaged by such Servicer and identified to the Master Servicer, to cause a
registered public accounting firm which is a member of the Institute of
Certified Public Accountants to furnish to the Master Servicer, not later than
March 5 of each year, or if such day is not a Business Day, the next Business
Day (with a 10 calendar day cure period, but in no event later than March 15),
commencing in March 2008, an electronic report (with a hard copy to follow
within 10 calendar days) to the effect that (i) it has obtained a representation
regarding certain matters from the management of such party, which includes an
assertion that such party has complied with the Relevant Servicing Criteria, and
(ii) on the basis of an examination conducted by such firm in accordance with
standards for attestation engagements issued or adopted by the Public Company
Accounting Oversight Board, it is expressing an opinion as to whether such
party's assessment of compliance with the Relevant Servicing Criteria was fairly
stated in all material respects, or it cannot express an overall opinion
regarding such party's assessment of compliance with the Relevant Servicing
Criteria. In the event that an overall opinion cannot be expressed, such
registered public accounting firm shall state in such report why it was unable
to express such an opinion. Such report must be available for general use and
not contain restricted use language. If requested by the Master Servicer or the
Depositor, such report shall contain or be accompanied by a consent of such
accounting firm to inclusion or incorporation of such report in the Depositor's
Registration Statement on Form S-3 relating to the Certificates and the Trust's
Form 10-K.

            Promptly after receipt of such report from the Master Servicer, the
Depositor shall review the report and, if applicable, consult with the Master
Servicer if any such report (i) states that the party's assessment of compliance
was not fairly stated in a material respect or (ii) is unable to state an
overall opinion.

            Promptly after receipt of such report from the Trustee, the
Custodian, the applicable Servicer, the Special Servicer (if applicable), or any
Servicing Function Participant engaged by such parties, the Master Servicer
shall review the report and shall promptly notify the Depositor if any such
report (i) states that the party's assessment of compliance was not fairly
stated in a material respect or (ii) is unable to state an overall opinion and
the Depositor shall promptly review each such report and the Depositor and the
Master Servicer shall consult with the parties to which such report relates.

            The Master Servicer shall make available any report from the Master
Servicer, the Trustee, the Custodian, the applicable Servicer, the Special
Servicer (if applicable), or any Servicing Function Participant furnished
pursuant to Section 3.05 and this Section 3.11, as well as any documents
incorporated by reference into the Prospectus (to the extent such documents are
either in its possession or have been filed with the Commission), to any
Certificateholder requesting such information.

            Section 3.12 Exchange Act Reports.

            (a) Within 15 days after each Distribution Date, the Master Servicer
shall prepare, an authorized officer of the Master Servicer shall sign, and the
Master Servicer shall file with the Commission, on behalf of the Trust, any Form
10-D required by the Exchange Act, in form and substance as required by the
Exchange Act. The Master Servicer shall file each Form 10-D with a copy of the
related Distribution Date Statement attached thereto. Any disclosure in addition
to the Distribution Date Statement that is required to be included on Form 10-D
("Additional Form 10-D Disclosure") shall be reported by the parties set forth
on Exhibit S and directed and approved by the Depositor, and the Master Servicer
will have no duty or liability for any failure hereunder to determine or prepare
any Additional Form 10-D Disclosure (other than with respect to itself) absent
such reporting, direction and approval. If a Form 10-D cannot be filed on time
or if a previously filed Form 10-D needs to be amended, the Master Servicer will
follow the procedures set forth in Section 3.12(d). Promptly (but no later than
1 Business Day) after filing with the Commission, the Master Servicer will make
available on its internet website a final executed copy of each Form 10-D.

            For so long as the Trust is subject to the Exchange Act reporting
requirements, within five (5) calendar days after the related Distribution Date,
the parties identified on Exhibit S shall (i) provide to the Master Servicer and
the Depositor, to the extent known by a Responsible Officer, in EDGAR-compatible
format, or in such other format as otherwise agreed upon by the Master Servicer
and such party, the form and substance of any Additional Form 10-D Disclosure,
if applicable and (ii) include with such Additional Form 10-D Disclosure, an
Additional Disclosure Notification in the form attached hereto as Exhibit V, and
the Depositor will approve, as to form and substance, or disapprove, as the case
may be, the inclusion of the Additional Form 10-D Disclosure on Form 10-D. The
Master Servicer has no duty under this Agreement to monitor or enforce the
performance by the parties listed on Exhibit S of their duties under this
paragraph or proactively solicit or procure from such parties any Additional
Form 10-D Disclosure; except that the Master Servicer shall enforce the
obligations of the Servicers under the Servicing Agreements. After preparing the
Form 10-D, if the Form 10-D contains any Additional Form 10-D Disclosure, the
Master Servicer shall forward electronically a draft copy of the Form 10-D to
the Depositor for review. Each party to this Agreement acknowledges that the
performance by the Master Servicer of its duties under this Section 3.12(a)
relating to the timely preparation and filing of Form 10-D is contingent upon
such parties strictly observing all applicable deadlines in the performance of
their duties under this Section 3.12(a). The Master Servicer shall have no
liability for any loss, expense, damage, claim arising out of or with respect to
any failure to properly prepare and/or timely file such Form 10-D, where such
failure results from the Master Servicer's inability or failure to receive, on a
timely basis, any information from any other party hereto, any Servicer, the
Custodian or any Special Servicer (if applicable) needed to prepare, arrange for
execution or file such Form 10-D, not resulting from its own negligence, bad
faith or willful misconduct. The Depositor will be responsible for any
reasonable fees assessed and expenses incurred by the Master Servicer in
connection with including any Additional Form 10-D Disclosure on Form 10-D
pursuant to this paragraph.

            (b) Within 90 days after the end of each fiscal year of the Trust or
such earlier date as may be required by the Exchange Act (it being understood
that the fiscal year for the Trust ends on December 31st of each year),
commencing in March 2008, the Master Servicer shall prepare, a senior officer of
the Master Servicer in charge of the master servicing function shall sign, and
the Master Servicer shall file with the Commission, on behalf of the Trust, a
Form 10-K, in form and substance as required by the Exchange Act. Each such Form
10-K shall include the following items, in each case to the extent they have
been delivered to the Master Servicer within the applicable timeframes set forth
in this Agreement, the related Servicing Agreements, the Custodial Agreement or,
if applicable, the Special Servicing Agreement:

            (i) an annual compliance statement for the Master Servicer, any
      Additional Master Servicer and each Servicer, as described under Section
      3.05;

            (ii) (A) the annual reports on assessment of compliance with
      servicing criteria for the Master Servicer, the Trustee, each Servicer,
      the Custodian, any Special Servicer (if applicable), and each Servicing
      Function Participant, as described under Section 3.11(a), and (B) if any
      party's report on assessment of compliance with Servicing Criteria
      described under Section 3.11(a) identifies any material instance of
      noncompliance, disclosure identifying such instance of noncompliance, or
      if any party's report on assessment of compliance with servicing criteria
      described under Section 3.11(a) is not included as an exhibit to such Form
      10-K, disclosure that such report is not included and an explanation of
      why such report is not included;

            (iii) (A) the registered public accounting firm attestation report
      for each of the Master Servicer, the Trustee, each Servicer, the
      Custodian, any Special Servicer (if applicable), and each Servicing
      Function Participant, as described under Section 3.11(b), and (B) if any
      registered public accounting firm attestation report described under
      Section 3.11(b) identifies any material instance of noncompliance,
      disclosure identifying such instance of noncompliance, or if any such
      registered public accounting firm attestation report is not included as an
      exhibit to such Form 10-K, disclosure that such report is not included and
      an explanation of why such report is not included; and

            (iv) a certification, signed by a senior officer of the Master
      Servicer in charge of the master servicing function, in the form attached
      hereto as Exhibit P or in such other form as may be required by Rules
      13a-14 and 15d-14 under the Exchange Act, as applicable, and any
      directives or interpretations thereof by the Commission (the
      "Sarbanes-Oxley Certification").

            Any disclosure or information in addition to (i) through (iv) above
that is required to be included on Form 10-K ("Additional Form 10-K Disclosure")
shall, pursuant to the paragraph immediately below, be reported by the parties
set forth on Exhibit T and directed and approved by the Depositor, and the
Master Servicer will have no duty or liability for any failure hereunder to
determine or prepare any Additional Form 10-K Disclosure (other than with
respect to itself) absent such reporting, direction and approval. If a Form 10-K
cannot be filed on time or if a previously filed Form 10-K needs to be amended,
the Master Servicer will follow the procedures set forth in Section 3.12(d).
Promptly (but no later than 1 Business Day) after filing with the Commission,
the Master Servicer will make available on its internet website a final executed
copy of each Form 10-K.

            No later than March 5 (with a 10 calendar day cure period, but in no
event later than March 15) of each year that the Trust is subject to the
Exchange Act reporting requirements, commencing in March 2008, (i) the parties
identified on Exhibit T shall provide to the Master Servicer and the Depositor,
to the extent known by a Responsible Officer, in EDGAR-compatible format, or in
such other format as otherwise agreed upon by the Master Servicer and such
party, the form and substance of any Additional Form 10-K Disclosure, if
applicable, and (ii) the parties identified on Exhibit T shall include with such
Additional Form 10-K Disclosure, an Additional Disclosure Notification in the
form attached hereto as Exhibit V, and the Depositor will approve, as to form
and substance, or disapprove, as the case may be, the inclusion of the
Additional Form 10-K Disclosure on Form 10-K. The Master Servicer has no duty
under this Agreement to monitor or enforce the performance by the parties listed
on Exhibit T of their duties under this paragraph or proactively solicit or
procure from such parties any Additional Form 10-K Disclosure information;
except that the Master Servicer shall enforce the obligations of the Servicers
under the Servicing Agreements. The Depositor will be responsible for any
reasonable fees and expenses assessed or incurred by the Master Servicer in
connection with including any Additional Form 10-K Disclosure on Form 10-K
pursuant to this paragraph.

            After preparing the Form 10-K, if the Form 10-K contains any
Additional Form 10-K Disclosure, the Master Servicer shall forward
electronically a draft copy of the Form 10-K to the Depositor for review. Each
party to this Agreement acknowledges that the performance by the Master Servicer
of its duties under this Section 3.12(b) relating to the timely preparation and
filing of Form 10-K is contingent upon such parties strictly observing all
applicable timeframes in the performance of their duties under Sections 3.05,
3.11 or this Section 3.12(b). The Master Servicer shall have no liability for
any loss, expense, damage, claim arising out of or with respect to any failure
to properly prepare and/or timely file such Form 10-K, where such failure
results from the Master Servicer's inability or failure to obtain or receive, on
a timely basis, any information from any other party hereto, any Servicer, any
Special Servicer (if applicable) or the Custodian needed to prepare, arrange for
execution or file such Form 10-K, not resulting from its own negligence, bad
faith or willful misconduct.

            (c) Within four (4) Business Days after the occurrence of an event
requiring disclosure on Form 8-K (each such event, a "Reportable Event"), and if
directed by the Depositor, the Master Servicer shall prepare, an authorized
officer of the Master Servicer shall sign, and the Master Servicer shall file
with the Commission, on behalf of the Trust, any Form 8-K, as required by the
Exchange Act, provided that the Depositor shall prepare and file the initial
Form 8-K in connection with the issuance of the Certificates. Any disclosure or
information related to a Reportable Event or that is otherwise required to be
included on Form 8-K ("Form 8-K Disclosure Information") shall, pursuant to the
paragraph immediately below, be reported by the parties set forth on Exhibit U
and directed and approved by the Depositor, and the Master Servicer will have no
duty or liability for any failure hereunder to determine or prepare any Form 8-K
Disclosure Information (other than with respect to itself) absent such
reporting, direction and approval. If a Form 8-K cannot be filed on time or if a
previously filed Form 8-K needs to be amended, the Master Servicer will follow
the procedures set forth in Section 3.12(d). Promptly (but no later than 1
Business Day) after filing with the Commission, the Master Servicer will, make
available on its internet website a final executed copy of each Form 8-K.

            For so long as the Trust is subject to the Exchange Act reporting
requirements, no later than the end of business on the second Business Day after
the occurrence of a Reportable Event (i) the parties identified on Exhibit U
shall provide to the Master Servicer and the Depositor, to the extent known by a
Responsible Officer, in EDGAR-compatible form, or in such other form as
otherwise agreed upon by the Master Servicer and such party, the form and
substance of any Form 8-K Disclosure Information, if applicable, and (ii) the
parties identified on Exhibit U shall include with such Additional Form 8-K
Disclosure, an Additional Disclosure Notification in the form attached hereto as
Exhibit V and the Depositor will approve, as to form and substance, or
disapprove, as the case may be, the inclusion of the Form 8-K Disclosure
Information on Form 8-K. The Master Servicer has no duty under this Agreement to
monitor or enforce the performance by the parties listed on Exhibit U of their
duties under this paragraph or proactively solicit or procure from such parties
any Form 8-K Disclosure Information; except that the Master Servicer shall
enforce the obligations of the Servicers under the Servicing Agreements. The
Depositor will be responsible for any reasonable fees and expenses assessed or
incurred by the Master Servicer in connection with including any Form 8-K
Disclosure Information on Form 8-K pursuant to this paragraph.

            After preparing the Form 8-K, the Master Servicer shall forward
electronically a draft copy of the Form 8-K to the Depositor for review. Each
party to this Agreement acknowledges that the performance by the Master Servicer
of its duties under this Section 3.12(c) relating to the timely preparation and
filing of Form 8-K is contingent upon such party strictly observing all
applicable timeframes in the performance of its duties under this Section
3.12(c). The Master Servicer shall have no liability for any loss, expense,
damage, claim arising out of or with respect to any failure to properly prepare
and/or timely file such Form 8-K, where such failure results from the Master
Servicer's inability or failure to obtain or receive, on a timely basis, any
information from any other party hereto, any Servicer, the Custodian or any
Special Servicer (if applicable) needed to prepare, arrange for execution or
file such Form 8-K, not resulting from its own negligence, bad faith or willful
misconduct.

            (d) In the event that the Master Servicer is unable to timely file
with the Commission all or any required portion of any Form 8-K, 10-D or 10-K
required to be filed by this Agreement because required disclosure information
was either not delivered to it or delivered to it after the delivery deadlines
set forth in this Agreement or for any other reason, the Master Servicer will
promptly notify the Depositor and, in the case of Form 10-D or 10-K, the Master
Servicer will prepare, sign and file a Form 12b-25 pursuant to Rule 12b-25 of
the Exchange Act not later than the Business Day following the due date of the
applicable report. Within five days following the due date of any Form 10-D as
to which it has filed a Form 12b-25, the Master Servicer shall prepare, sign and
file the related Form 10-D. Within 15 days following the due date of any Form
10-K as to which it has filed a Form 12b-25, the Master Servicer shall prepare,
sign and file the related Form 10-K. In the case of Form 8-K, the Master
Servicer will, upon receipt of all required Form 8-K Disclosure Information and
at the direction of the Depositor, include such disclosure information on the
next Form 10-D. In the event that any previously filed Form 8-K, 10-D or 10-K
needs to be amended, the Master Servicer will notify the Depositor and each
party whose cooperation is required in connection with the preparation of such
amendment; provided however that such notice shall not be required in connection
with an amendment to Form 10-D due to a revision made to any Distribution Date
Statement. Any amendment to any previously filed Form 8-K, 10-D or 10-K shall be
prepared, signed and filed by the Master Servicer. The parties to this Agreement
acknowledge that the performance by the Master Servicer of its duties under this
Section 3.12(d) related to the timely preparation and filing of a Form 12b-25 or
any amendment to Form 8-K, 10-D or 10-K is contingent upon each such party
performing its duties under this Section. The Master Servicer shall have no
liability for any loss, expense, damage, claim arising out of or with respect to
any failure to properly prepare and/or timely file any such Form 12b-25 or any
amendments to Forms 8-K, 10-D or 10-K, where such failure results from the
Master Servicer's inability or failure to obtain or receive, on a timely basis,
any information from any other party hereto, any Servicer, the Custodian or any
Special Servicer (if applicable) needed to prepare, arrange for execution or
file such Form 12b-25 or any amendments to Forms 8-K, 10-D or 10-K, not
resulting from its own negligence, bad faith or willful misconduct.

            (e) Unless otherwise instructed by the Depositor, on or prior to
January 30 of the first year in which the Master Servicer is able to do so under
applicable law, the Master Servicer shall prepare, an authorized officer of the
Master Servicer shall sign, and the Master Servicer shall file with the
Commission, on behalf of the Trust, a Form 15 relating to the automatic
suspension of reporting in respect of the Trust under the Exchange Act. At the
beginning of any year after the filing of a Form 15, if the number of
Certificateholders of record exceeds the number set forth in Section 15(d) of
the Exchange Act or the regulations promulgated pursuant thereto which would
cause the Trust to again become subject to the reporting requirements of the
Exchange Act, the Master Servicer shall recommence preparing and filing reports
on Form 10-D, 10-K and 8-K as required pursuant to this Section.

            (f) To the extent the Master Servicer is obligated to give any
notice to the Depositor pursuant to this Section 3.12, such notice may,
notwithstanding the provisions of Section 10.05 in this Agreement, be delivered
via facsimile to 240-586-5983 or via electronic mail to
Structuredfinance-frederick@wellsfargo.com.

<PAGE>

                                   ARTICLE IV

                    DISTRIBUTIONS IN RESPECT OF CERTIFICATES;
                         PAYMENTS TO CERTIFICATEHOLDERS;
                             STATEMENTS AND REPORTS

            Section 4.01 Distributions.

            (a) On each Distribution Date, the Pool Distribution Amount will be
applied in the following amounts, to the extent the Pool Distribution Amount is
sufficient therefor, in the manner and in the order of priority as follows:

            first, to the Classes of Class A Certificates, pro rata, based upon
their respective Interest Accrual Amounts, in an aggregate amount up to the
Class A Interest Accrual Amount with respect to such Distribution Date;

            second, to the Classes of Class A Certificates, pro rata, based upon
their respective Class A Unpaid Interest Shortfalls, in an aggregate amount up
to the Aggregate Class A Unpaid Interest Shortfall;

            third, to the Classes of Class A Certificates, in an aggregate
amount up to the Class A Optimal Principal Amount, such distribution to be
allocated among such Classes in accordance with Section 4.01(b) or Section
4.01(c), as applicable;

            fourth, to the Class B-1 Certificates, in an amount up to the
Interest Accrual Amount for the Class B-1 Certificates with respect to such
Distribution Date;

            fifth, to the Class B-1 Certificates in an amount up to the Class
B-1 Unpaid Interest Shortfall;

            sixth, to the Class B-1 Certificates in an amount up to the Class
B-1 Optimal Principal Amount;

            seventh, to the Class B-2 Certificates, in an amount up to the
Interest Accrual Amount for the Class B-2 Certificates with respect to such
Distribution Date;

            eighth, to the Class B-2 Certificates in an amount up to the Class
B-2 Unpaid Interest Shortfall;

            ninth, to the Class B-2 Certificates in an amount up to the Class
B-2 Optimal Principal Amount;

            tenth, to the Class B-3 Certificates, in an amount up to the
Interest Accrual Amount for the Class B-3 Certificates with respect to such
Distribution Date;

            eleventh, to the Class B-3 Certificates in an amount up to the Class
B-3 Unpaid Interest Shortfall;

            twelfth, to the Class B-3 Certificates in an amount up to the Class
B-3 Optimal Principal Amount;

            thirteenth, to the Class B-4 Certificates in an amount up to the
Interest Accrual Amount for the Class B-4 Certificates with respect to such
Distribution Date;

            fourteenth, to the Class B-4 Certificates in an amount up to the
Class B-4 Unpaid Interest Shortfall;

            fifteenth, to the Class B-4 Certificates in an amount up to the
Class B-4 Optimal Principal Amount;

            sixteenth, to the Class B-5 Certificates in an amount up to the
Interest Accrual Amount for the Class B-5 Certificates with respect to such
Distribution Date;

            seventeenth, to the Class B-5 Certificates in an amount up to the
Class B-5 Unpaid Interest Shortfall;

            eighteenth, to the Class B-5 Certificates in an amount up to the
Class B-5 Optimal Principal Amount;

            nineteenth, to the Class B-6 Certificates in an amount up to the
Interest Accrual Amount for the Class B-6 Certificates with respect to such
Distribution Date;

            twentieth, to the Class B-6 Certificates in an amount up to the
Class B-6 Unpaid Interest Shortfall;

            twenty-first, to the Class B-6 Certificates in an amount up to the
Class B-6 Optimal Principal Amount; and

            twenty-second, to the Holder of the Class A-R Certificate, any
amounts remaining in the Payment Account.

            Notwithstanding the foregoing, after the Principal Balance of any
Class has been reduced to zero, such Class will be entitled to no further
distributions of principal or interest (including, without limitation, any
Unpaid Interest Shortfalls).

            On each Distribution Date, any Reimbursement Amount shall be
distributed sequentially to the Classes of Certificates then outstanding which
bore the loss to which such Reimbursement Amount relates beginning with the most
senior of such Class of Certificates, up to, with respect to each Class, the
amount of loss borne by such Class. Any Reimbursement Amount remaining after the
application described in the preceding sentence shall be included in the Pool
Distribution Amount.

            With respect to any Distribution Date, the amount of the Principal
Adjustment, if any, attributable to any Class B Certificates will be allocated
to the Classes of Class A Certificates and any Class of Class B Certificates
with a lower numerical designation pro rata based on their outstanding Principal
Balances.

            On each Distribution Date occurring prior to the Subordination
Depletion Date, the Class A Principal Distribution Amount will be allocated
among and distributed in reduction of the Principal Balances of the Class A
Certificates, sequentially, to the Class A-R and Class A-1 Certificates.

            (c) Notwithstanding the foregoing, on each Distribution Date
      occurring on or subsequent to the Subordination Depletion Date, the Class
      A Principal Distribution Amount shall be distributed among the Classes of
      Class A Certificates, pro rata, in accordance with their outstanding
      Principal Balances without regard to either the proportions or the
      priorities set forth in Section 4.01(b).

            (d)(i) For purposes of determining whether the Classes of Class B
      Certificates are eligible to receive unscheduled principal distributions
      (other than Liquidation Proceeds that are not Partial Liquidation
      Proceeds) with respect to any Distribution Date, the following tests shall
      apply:

            (A) if the Current Class B-1 Fractional Interest is less than the
      Original Class B-1 Fractional Interest and the Class B-1 Principal Balance
      is greater than zero, the Class B-2, Class B-3, Class B-4, Class B-5 and
      Class B-6 Certificates shall not be eligible to receive distributions of
      such unscheduled principal; or

            (B) if the Current Class B-2 Fractional Interest is less than the
      Original Class B-2 Fractional Interest and the Class B-2 Principal Balance
      is greater than zero, the Class B-3, Class B-4, Class B-5 and Class B-6
      Certificates shall not be eligible to receive distributions of such
      unscheduled principal; or

            (C) if the Current Class B-3 Fractional Interest is less than the
      Original Class B-3 Fractional Interest and the Class B-3 Principal Balance
      is greater than zero, the Class B-4, Class B-5 and Class B-6 Certificates
      shall not be eligible to receive distributions of such unscheduled
      principal; or

            (D) if the Current Class B-4 Fractional Interest is less than the
      Original Class B-4 Fractional Interest and the Class B-4 Principal Balance
      is greater than zero, the Class B-5 and Class B-6 Certificates shall not
      be eligible to receive distributions of such unscheduled principal; or

            (E) if the Current Class B-5 Fractional Interest is less than the
      Original Class B-5 Fractional Interest and the Class B-5 Principal Balance
      is greater than zero, the Class B-6 Certificates shall not be eligible to
      receive distributions of such unscheduled principal.

            (ii) Notwithstanding the foregoing, if on any Distribution Date the
aggregate principal distributions to Holders of the Classes of Class B
Certificates would reduce the Principal Balances of the Classes of Class B
Certificates below zero, first the Class B Prepayment Percentage of any affected
Class of Class B Certificates for such Distribution Date beginning with the
affected Class with the lowest numerical Class designation and then, if
necessary, the Class B Percentage of such Class of the Class B Certificates for
such Distribution Date shall be reduced to the respective percentages necessary
to bring the Principal Balance of such Class of Class B Certificates to zero.
The Class B Prepayment Percentages and the Class B Percentages of the remaining
Classes of Class B Certificates will be recomputed substituting for the
Subordinated Prepayment Percentage and Subordinated Percentage in such
computations the difference between (A) the Subordinated Prepayment Percentage
or Subordinated Percentage as the case may be, and (B) the percentages
determined in accordance with the preceding sentence necessary to bring the
Principal Balances of the affected Classes of Class B Certificates to zero;
provided, however, that if the Principal Balances of all the Classes of Class B
Certificates eligible to receive distributions of unscheduled principal pursuant
to clause (i) shall be reduced to zero on such Distribution Date, the Class B
Prepayment Percentage of the Class of Class B Certificates with the lowest
numerical Class designation which would otherwise be ineligible to receive such
distributions of unscheduled principal in accordance with this Section shall
equal the remainder of the Subordinated Prepayment Percentage for such
Distribution Date minus the sum of the Class B Prepayment Percentages of the
Classes of Class B Certificates having lower numerical Class designations, if
any. Any entitlement of any Class of Class B Certificates to principal payments
solely pursuant to this clause (ii) shall not cause such Class to be regarded as
being eligible to receive such unscheduled principal distributions for the
purpose of applying the definition of its Class B Prepayment Percentage.

            (e) On each Distribution Date other than the Final Distribution Date
(if such Final Distribution Date is in connection with a purchase of the assets
of the Trust Estate by the Depositor), the Paying Agent shall from funds
remitted to it by the Master Servicer, distribute to each Certificateholder of
record on the preceding Record Date (other than as provided in Section 9.01
respecting the final distribution to Certificateholders or in the last paragraph
of this Section 4.01(e) respecting the final distribution in respect of any
Class) either in immediately available funds by wire transfer to the account of
such Certificateholder at a bank or other entity having appropriate facilities
therefor, if such Certificateholder has so notified the Paying Agent at least
seven Business Days prior to the Distribution Date or, if such Holder has not so
notified the Paying Agent, by check mailed to such Holder at the address of such
Holder appearing in the Certificate Register, such Holder's share of the Class A
Distribution Amount with respect to each Class of Class A Certificates and the
Class B Distribution Amount with respect to each Class of Class B Certificates.

            In the event that, on any Distribution Date prior to the Final
Distribution Date, the Principal Balance of any Class of Class A Certificates
(other than the Residual Certificate) or the Principal Balance of any Class of
Class B Certificates would be reduced to zero, the Master Servicer shall, as
soon as practicable after the Determination Date relating to such Distribution
Date, send notice to the Paying Agent. The Paying Agent shall then send a notice
to each Certificateholder of such Class with a copy to the Certificate
Registrar, specifying that the final distribution with respect to such Class
will be made on such Distribution Date only upon the presentation and surrender
of such Certificateholder's Certificates at the office or agency of the
Certificate Registrar therein specified; provided, however, that the failure to
give such notice will not entitle a Certificateholder to any interest beyond the
interest payable with respect to such Distribution Date in accordance with
Section 4.01(a).

            (f) The Paying Agent shall withhold or cause to be withheld such
amounts as may be required by the Code (giving full effect to any exemptions
from withholding and related certifications required to be furnished by
Certificateholders and any reductions to withholding by virtue of any bilateral
tax treaties and any applicable certification required to be furnished by
Certificateholders with respect thereto) from distributions to be made to
Persons other than U.S. Persons ("Non-U.S. Persons"). Amounts withheld pursuant
to this Section 4.01(f) shall be treated as having been distributed to the
related Certificateholder for all purposes of this Agreement. For the purposes
of this paragraph, a "U.S. Person" is a citizen or resident of the United
States, a corporation or partnership (unless, in the case of a partnership,
Treasury regulations are adopted that provide otherwise) created or organized in
or under the laws of the United States, any state thereof or the District of
Columbia, including an entity treated as a corporation or partnership for
federal income tax purposes, 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
such trust, and one or more such U.S. Persons have the authority to control all
substantial decisions of such trust (or, to the extent provided in applicable
Treasury regulations, certain trusts in existence on August 20, 1996 which are
eligible to elect to be treated as U.S. Persons).

            Section 4.02 Allocation of Realized Losses.

            (a) With respect to any Distribution Date, the principal portion of
Realized Losses (other than Debt Service Reductions) will be allocated as
follows:

            first, to the Class B-6 Certificates until the Class B-6 Principal
Balance has been reduced to zero;

            second, to the Class B-5 Certificates until the Class B-5 Principal
Balance has been reduced to zero;

            third, to the Class B-4 Certificates until the Class B-4 Principal
Balance has been reduced to zero;

            fourth, to the Class B-3 Certificates until the Class B-3 Principal
Balance has been reduced to zero;

            fifth, to the Class B-2 Certificates until the Class B-2 Principal
Balance has been reduced to zero;

            sixth, to the Class B-1 Certificates until the Class B-1 Principal
Balance has been reduced to zero; and

            seventh, to the Class A Certificates.

            This allocation of Realized Losses will be effected through the
reduction of the applicable Class's Principal Balance through the operation of
the definitions of Principal Balance, Class B-1 Principal Balance, Class B-2
Principal Balance, Class B-3 Principal Balance, Class B-4 Principal Balance,
Class B-5 Principal Balance and Class B-6 Principal Balance.

            (b) Any Realized Losses allocated to a Class of Class A Certificates
or Class B Certificates pursuant to Section 4.02(a) shall be allocated among the
Certificates of such Class based on their Percentage Interests.

            (c) With respect to any Distribution Date after the Subordination
Depletion Date, the interest portion of Realized Losses will be allocated among
the outstanding Classes of Class A Certificates based on their Class A Interest
Percentages.

            (d) Realized Losses allocated in accordance with this Section 4.02
will be allocated as follows: (i) Liquidated Loan Losses on Liquidated Loans for
which the Liquidation Proceeds were received during, and Bankruptcy Losses
incurred in a period corresponding to, an Unscheduled Principal Receipt Period
for Full Unscheduled Principal Receipts that is a Mid-Month Receipt Period will
be allocated on the Determination Date in the month following the month in which
such Mid-Month Receipt Period ended and (ii) Liquidated Loan Losses on
Liquidated Loans for which the Liquidation Proceeds were received during, and
Bankruptcy Losses incurred in a period corresponding to, an Unscheduled
Principal Receipt Period for Full Unscheduled Principal Receipts that is a Prior
Month Receipt Period will be allocated on the Determination Date in the second
month following the month which is such Prior Month Receipt Period.

            Section 4.03 Paying Agent.

            (a) The Paying Agent shall establish and maintain a Payment Account,
which shall be a separate trust account (unless the Master Servicer is the
Paying Agent, in which case, the Certificate Account may be the Payment Account)
and an Eligible Account, in which the Master Servicer shall cause to be
deposited from funds in the Certificate Account or, to the extent required
hereunder, from its own funds (i) at or before 10:00 a.m., New York time, on the
Business Day preceding each Distribution Date, by wire transfer of immediately
available funds, any Periodic Advance for such Distribution Date, pursuant to
Section 3.03 and (ii) at or before 10:00 a.m., New York time, on the Business
Day preceding each Distribution Date, by wire transfer of immediately available
funds, an amount equal to the Pool Distribution Amount. The Master Servicer may
cause the Paying Agent to invest the funds in the Payment Account. Any such
investment shall be in Eligible Investments, which shall mature not later than
the Business Day preceding the related Distribution Date (unless the Eligible
Investments are obligations of the institution that maintains such account, in
which case such Eligible Investments shall mature not later than the
Distribution Date), and shall not be sold or disposed of prior to maturity. All
income and gain realized from any such investment shall be for the benefit of
the Master Servicer and shall be subject to its withdrawal or order from time to
time. The amount of any losses incurred in respect of any such investments shall
be deposited in the Payment Account by the Master Servicer out of its own funds
immediately as realized. The Paying Agent may withdraw from the Payment Account
any amount deposited in the Payment Account that was not required to be
deposited therein and may clear and terminate the Payment Account pursuant to
Section 9.01.

            (b) Wells Fargo Bank is hereby appointed as initial Paying Agent to
make distributions to Certificateholders and to make available to
Certificateholders the Distribution Date Statements and the annual statements
required by Section 4.04. The Trustee may, at any time, remove or replace the
Paying Agent, other than Wells Fargo Bank for so long as Wells Fargo Bank is
acting as the Master Servicer. If Wells Fargo Bank is no longer acting as Master
Servicer, the Master Servicer shall pay, from its own funds, the reasonable
compensation of any Paying Agent other than Wells Fargo Bank.

            The Trustee shall cause any Paying Agent that is not HSBC Bank USA,
National Association or Wells Fargo Bank to execute and deliver to the Trustee
an instrument (a "Paying Agent Agreement") in which such Paying Agent agrees
with the Trustee that such Paying Agent shall:

            (i) hold all amounts remitted to it by the Master Servicer for
      distribution to Certificateholders in trust for the benefit of
      Certificateholders until such amounts are distributed to
      Certificateholders or otherwise disposed of as herein provided;

            (ii) give the Trustee notice of any default by the Master Servicer
      in remitting any required amount;

            (iii) at any time during the continuance of any such default, upon
      the written request of the Trustee, forthwith pay to the Trustee all
      amounts held in trust by such Paying Agent; and

            (iv) if the Depositor or Master Servicer determine it necessary in
      order to comply with the requirements of Regulation AB, provide to the
      Master Servicer the assessment of compliance and accountants report
      provided for in Section 3.11 with respect to the Servicing Criteria set
      forth in Item 1122(d) of Regulation AB applicable to the duties of the
      Paying Agent.

            Section 4.04 Statements to Certificateholders; Reports to the
                         Trustee and the Depositor.

            (a) On each Distribution Date, the Master Servicer shall make
available in accordance with subsection (b) of this Section 4.04 to each Holder
of a Certificate, the Trustee, the Paying Agent and the Depositor a statement
(the "Distribution Date Statement") setting forth:

            (i) the applicable Determination Date, the applicable Record Date
      and the actual Distribution Date;

            (ii) the amount of such distribution to Holders of each Class of
      Class A Certificates allocable to principal, separately identifying the
      aggregate amount of any Unscheduled Principal Receipts and Liquidation
      Proceeds included therein and the Principal Balance of each Class of Class
      A Certificates;

            (iii) (A) the amount of such distribution to Holders of each Class
      of Class A Certificates allocable to interest, (B) the amount of the
      Current Class A Interest Distribution Amount allocated to each Class of
      Class A Certificates, (C) any Class A Interest Shortfall Amounts arising
      with respect to such Distribution Date and any remaining Class A Unpaid
      Interest Shortfall with respect to each Class after giving effect to such
      distribution, (D) the amount of any Non-Supported Interest Shortfall
      allocated to each Class of Class A Certificates for such Distribution Date
      and (E) the amount of any Relief Act Shortfall allocated to each Class of
      Class A Certificates for such Distribution Date;

            (iv) the amount of such distribution to Holders of each Class of
      Class B Certificates allocable to principal, separately identifying the
      aggregate amount of any Unscheduled Principal Receipts and Liquidation
      Proceeds included therein and the Principal Balance of each Class of Class
      B Certificates;

            (v) (A) the amount of such distribution to Holders of each Class of
      Class B Certificates allocable to interest, (B) the amount of the Current
      Class B Interest Distribution Amount allocated to each Class of Class B
      Certificates (C) any Class B Interest Shortfall Amounts arising with
      respect to such Distribution Date and any remaining Class B Unpaid
      Interest Shortfall with respect to each Class of Class B Certificates
      after giving effect to such distribution, (D) the amount of any
      Non-Supported Interest Shortfall allocated to each Class of Class B
      Certificates for such Distribution Date and (E) the amount of any Relief
      Act Shortfall allocated to each Class of Class B Certificates for such
      Distribution Date;

            (vi) the amount of any Periodic Advance by or reimbursed to any
      Servicer, the Master Servicer or the Trustee pursuant to the Servicing
      Agreements or this Agreement;

            (vii) the number and aggregate principal balance of Mortgage Loans
      outstanding, the weighted average Mortgage Interest Rate and weighted
      average remaining term to maturity of the Mortgage Loans outstanding and
      the cumulative prepayment amounts, in each case, as of the preceding
      Determination Date;

            (viii) the number and aggregate principal balances of the Mortgage
      Loans by range of current Mortgage Interest Rates;

            (ix) the pool factors for such Distribution Date;

            (x) the beginning and ending balance of the Certificate Account;

            (xi) the Class A Principal Balance, the Principal Balance of each
      Class of Class A Certificates, the Class B Principal Balance and the
      Principal Balance of each Class of Class B Certificates prior to and after
      giving effect to the distributions of principal made, and the principal
      portion of Realized Losses, if any, allocated with respect to such
      Distribution Date;

            (xii) the Adjusted Pool Amount and the Pool Scheduled Principal
      Balance of the Mortgage Loans for such Distribution Date;

            (xiii) the aggregate Scheduled Principal Balances of the Mortgage
      Loans serviced by Wells Fargo Bank in its capacity as Servicer and,
      collectively, by the Other Servicers as of such Distribution Date;

            (xiv) the Class A Percentage for such Distribution Date;

            (xv) the Class A Prepayment Percentage for such Distribution Date;

            (xvi) the Class B-1, Class B-2, Class B-3, Class B-4, Class B-5 and
      Class B-6 Percentages for such Distribution Date;

            (xvii) the Class B-1, Class B-2, Class B-3, Class B-4, Class B-5 and
      Class B-6 Prepayment Percentages for such Distribution Date;

            (xviii) the number and aggregate principal balances of Mortgage
      Loans (A) delinquent (exclusive of Mortgage Loans in foreclosure or
      bankruptcy), grouping such delinquent Mortgage Loans in 30 day increments
      up to 180 days delinquent (determined in accordance with the Mortgage
      Bankers' Association delinquency methodology), (B) in foreclosure, as of
      the close of business on the last day of the calendar month preceding the
      Distribution Date and (C) in bankruptcy as of the close of business on the
      last day of the calendar month preceding the Distribution Date;

            (xix) the number and aggregate principal balances of the Mortgage
      Loans that are REO Mortgage Loans as of the Determination Date immediately
      preceding such Distribution Date;

            (xx) the aggregate amount of Realized Losses incurred during the
      preceding calendar month;

            (xxi) any expenses or indemnification amounts paid by the Trust, the
      specific purpose of each payment and the parties to whom the payments were
      made;

            (xxii) the amount by which the Principal Balance of each Class of
      Class B Certificates has been reduced as a result of Realized Losses
      allocated as of such Distribution Date;

            (xxiii) the amount of the aggregate Servicing Fees and Master
      Servicing Fees paid (and not previously reported) with respect to the
      related Distribution Date and the amount by which the aggregate Available
      Master Servicer Compensation has been reduced by the Prepayment Interest
      Shortfall for the related Distribution Date;

            (xxiv) the amount of PMI Advances made by a Servicer, if any;

            (xxv) the Class A Pass-Through Rate for each Class of Class A
      Certificates and the Class B Pass-Through Rate for each Class of Class B
      Certificates;

            (xxvi) any material modifications, extensions or waivers to Mortgage
      Loan terms, fees, penalties or payments since the previous Distribution
      Date;

            (xxvii) any material breaches of representations and warranties
      relating to the Mortgage Loans or material breaches of transaction
      covenants or representations and warranties;

            (xxviii) if any of the Mortgage Loans have prepayment penalties, the
      aggregate amount of any prepayment penalties paid;

            (xxix) with respect to any Mortgage Loan as to which there has been
      a Servicer Modification during the calendar month preceding such
      Distribution Date, the Scheduled Principal Balance as of such Distribution
      Date, the Monthly Payment prior to such modification and the Monthly
      Payment after such modification; and

            (xxx) any other customary information as is required to enable
      Certificateholders to prepare their tax returns.

            In the case of information furnished with respect to a Class of
Class A Certificates pursuant to clauses (ii) and (iii) above and with respect
to a Class of Class B Certificates pursuant to clauses (iv) and (v) above, the
amounts shall be expressed as a dollar amount per Class A or Class B Certificate
(other than the Residual Certificate) with a $1,000 Denomination, and as a
dollar amount per Residual Certificate with a $100 Denomination.

            Within a reasonable period of time after the end of each calendar
year, the Paying Agent shall, upon request, furnish or cause to be furnished to
each Person who at any time during the calendar year was the Holder of a
Certificate a statement containing the information set forth in clauses (ii) and
(iii)(A) above in the case of a Class A Certificateholder and the information
set forth in clauses (iv) and (v)(A) above in the case of a Class B
Certificateholder aggregated for such calendar year or applicable portion
thereof during which such Person was a Certificateholder. Such obligation of the
Paying Agent shall be deemed to have been satisfied to the extent that
substantially comparable information shall be provided by the Master Servicer or
the Trustee pursuant to any requirements of the Code from time to time in force.

            Unless the Master Servicer is acting as the Paying Agent, prior to
the close of business on the second Business Day preceding each Distribution
Date, the Master Servicer shall furnish a statement to any Paying Agent (the
information in such statement to be made available to Certificateholders by the
Paying Agent on written request) setting forth the Class A Distribution Amount
with respect to each Class of Class A Certificates and the Class B Distribution
Amount with respect to each Class of Class B Certificates. The determination by
the Master Servicer of such amounts shall, in the absence of obvious error, be
presumptively deemed to be correct for all purposes hereunder and the Trustee
and the Paying Agent shall be protected in relying upon the same without any
independent check or verification.

            In addition to the Distribution Date Statements and the annual
statements required pursuant to this Section 4.04(a), the Paying Agent shall
make available upon request to each Holder and each proposed transferee of a
Class B-4, Class B-5 or Class B-6 Certificate such additional information, if
any, as may be required to permit the proposed transfer to be effected pursuant
to Rule 144A, which information shall be provided on a timely basis to the
Paying Agent by the Master Servicer.

            (b) The Master Servicer's responsibility for disbursing the
information set forth in subsection (a) of this Section 4.04 to each Holder of a
Certificate, the Depositor and other interested parties is limited to the
availability, timeliness and the accuracy of the information provided by each
Servicer. The Master Servicer will make a copy of each Distribution Date
Statement provided pursuant to this Section 4.04 (and, at its option, any
additional files containing the same information in an alternative format)
available each month to Certificateholders and other interested parties, and
other parties to this Agreement via the Master Servicer's internet website,
which in the case of Wells Fargo Bank, is located at "www.ctslink.com." In
addition, the Paying Agent shall provide copies of the Distribution Date
Statement and the annual statements required pursuant to Section 4.04(a) to
Persons making written requests therefor at its Corporate Trust Office.
Assistance in using the internet website can be obtained by calling the Master
Servicer's customer service desk, which in the case of Wells Fargo Bank, is at
(866) 846-4526. Parties that are unable to use the above distribution method are
entitled to have a paper copy mailed to them via first class mail by calling the
customer service desk and indicating such. The Master Servicer shall have the
right to change the way the Distribution Date Statement is distributed in order
to make such distribution more convenient and/or more accessible and the Master
Servicer shall provide timely and adequate notification to the
Certificateholders and the parties to this Agreement regarding any such changes.

            The Master Servicer shall also be entitled to rely on but shall not
be responsible for the content or accuracy of any information provided by third
parties for purposes of preparing the Distribution Date Statement and may affix
thereto any disclaimer it deems appropriate in its reasonable discretion
(without suggesting liability on the part of any other party hereto).

            Section 4.05 Reserved.

            Section 4.06 Calculation of Amounts; Binding Effect of
                         Interpretations and Actions of Master Servicer.

            The Master Servicer will compute the amount of all distributions to
be made on the Certificates and all losses to be allocated to the Certificates.
In the event that the Master Servicer concludes that any ambiguity or
uncertainty exists in any provisions of this Agreement relating to distributions
to be made on the Certificates, the allocation of losses to the Certificates or
otherwise, the interpretation of such provisions and any actions taken by the
Master Servicer in good faith to implement such interpretation shall be binding
upon Certificateholders.

<PAGE>

                                    ARTICLE V

                                THE CERTIFICATES

            Section 5.01 The Certificates.

            (a) The Class A and Class B Certificates shall be issued only in
minimum Denominations of a Single Certificate and, except for the Residual
Certificate, integral multiples of $1 in excess thereof, and shall be
substantially in the respective forms set forth as Exhibits A-1, A-R, B-1, B-2,
B-3, B-4, B-5, B-6 and C (reverse side of Certificates) hereto. On original
issue the Certificates shall be executed and delivered by the Paying Agent to or
upon the order of the Depositor upon receipt by the Trustee or the Custodian of
the documents specified in Section 2.01(a). The aggregate principal portion
evidenced by the Class A and Class B Certificates shall be the sum of the
amounts specifically set forth in the respective Certificates. The Certificates
shall be executed by manual or facsimile signature on behalf of the Paying Agent
by any Responsible Officer thereof. Certificates bearing the manual or facsimile
signatures of individuals who were at any time the proper officers of the Paying
Agent shall bind the Paying Agent notwithstanding that such individuals or any
of them have ceased to hold such offices prior to the countersigning of such
Certificates 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 manually countersigned
by a Responsible Officer of the Authenticating Agent, or unless there appears on
such Certificate a certificate of authentication executed by the Authenticating
Agent by manual signature, and such countersignature or certificate upon a
Certificate shall be conclusive evidence, and the only evidence, that such
Certificate has been duly authenticated and delivered hereunder. All
Certificates shall be dated the date of their authentication.

            Until such time as Definitive Certificates are issued pursuant to
Section 5.07, each Book-Entry Certificate shall bear the following legend:

            "Unless this certificate is presented by an authorized
representative of [the Clearing Agency] to the Depositor or its agent for
registration of transfer, exchange or payment, and any certificate issued is
registered in the name of [the Clearing Agency] or such other name as requested
by an authorized representative of [the Clearing Agency] and any payment is made
to [the Clearing Agency], any transfer, pledge or other use hereof for value or
otherwise by or to any person is wrongful since the registered owner hereof,
[the Clearing Agency], has an interest herein."

            (b) Upon original issuance, the Book-Entry Certificates shall be
issued in the form of one or more typewritten certificates, to be delivered to
The Depository Trust Company, the initial Clearing Agency, by, or on behalf of,
the Depositor or to, and deposited with the Certificate Custodian, on behalf of
The Depository Trust Company, if directed to do so pursuant to instructions from
The Depository Trust Company. Such Certificates shall initially be registered in
the Certificate Register in the name of the nominee of the initial Clearing
Agency, and no Beneficial Owner will receive a definitive certificate
representing such Beneficial Owner's interest in the Book-Entry Certificates,
except as provided in Section 5.07. Unless and until definitive, fully
registered certificates ("Definitive Certificates") have been issued to
Beneficial Owners pursuant to Section 5.07:

            (i) the provisions of this Section 5.01(b) shall be in full force
      and effect;

            (ii) the Depositor, the Master Servicer, the Certificate Registrar,
      the Paying Agent and the Trustee may deal with the Clearing Agency for all
      purposes (including the making of distributions on the Book-Entry
      Certificates and the taking of actions by the Holders of Book-Entry
      Certificates) as the authorized representative of the Beneficial Owners;

            (iii) to the extent that the provisions of this Section 5.01(b)
      conflict with any other provisions of this Agreement, the provisions of
      this Section 5.01(b) shall control;

            (iv) the rights of Beneficial Owners shall be exercised only through
      the Clearing Agency and shall be limited to those established by law, the
      rules, regulations and procedures of the Clearing Agency and agreements
      between such Beneficial Owners and the Clearing Agency and/or the Clearing
      Agency Participants, and all references in this Agreement to actions by
      Certificateholders shall, with respect to the Book-Entry Certificates,
      refer to actions taken by the Clearing Agency upon instructions from the
      Clearing Agency Participants, and all references in this Agreement to
      distributions, notices, reports and statements to Certificateholders
      shall, with respect to the Book-Entry Certificates, refer to
      distributions, notices, reports and statements to the Clearing Agency or
      its nominee, as registered holder of the Book-Entry Certificates, as the
      case may be, for distribution to Beneficial Owners in accordance with the
      procedures of the Clearing Agency; and

            (v) the initial Clearing Agency will make book-entry transfers among
      the Clearing Agency Participants and receive and transmit distributions of
      principal and interest on the Certificates to the Clearing Agency
      Participants, for distribution by such Clearing Agency Participants to the
      Beneficial Owners or their nominees.

            For purposes of any provision of this Agreement requiring or
permitting actions with the consent of, or at the direction of, Holders of
Book-Entry Certificates evidencing specified Voting Interests, such direction or
consent shall be given by Beneficial Owners having the requisite Voting
Interests, acting through the Clearing Agency.

            Unless and until Definitive Certificates have been issued to
Beneficial Owners pursuant to Section 5.07, copies of the Distribution Date
Statements shall be available to Beneficial Owners upon written request to the
Paying Agent at its Corporate Trust Office.

            Section 5.02 Registration of Certificates.

            (a) The Certificate Registrar shall cause to be kept at one of the
offices or agencies to be maintained in accordance with the provisions of
Section 5.06 a Certificate Register in which, subject to such reasonable
regulations as it may prescribe, the Certificate Registrar shall provide for the
registration of Certificates and of transfers and exchanges of Certificates as
herein provided. The Master Servicer shall act as, or shall appoint, a
Certificate Registrar for the purpose of registering Certificates and transfers
and exchanges of Certificates as herein provided.

            Upon surrender for registration of transfer of any Certificate at
any office or agency maintained for such purpose pursuant to Section 5.06 (and
subject to the provisions of this Section 5.02) the Paying Agent shall execute,
and shall date, countersign (or cause the Authenticating Agent to countersign)
and deliver, in the name of the designated transferee or transferees, one or
more new Certificates of a like aggregate principal portion or Percentage
Interest and of the same Class.

            At the option of the Certificateholders, Certificates may be
exchanged for other Certificates of authorized Denominations of a like aggregate
principal portion or Percentage Interest and of the same Class upon surrender of
the Certificates to be exchanged at any such office or agency. Whenever any
Certificates are so surrendered for exchange, the Paying Agent shall execute,
and shall date, countersign (or cause the Authenticating Agent to countersign)
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 Certificate Registrar or the Paying Agent)
be duly endorsed by, or be accompanied by a written instrument of transfer in
form satisfactory to the Certificate Registrar, duly executed by the Holder
thereof or his attorney duly authorized in writing.

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

            All Certificates surrendered for transfer and exchange shall be
canceled by the Certificate Registrar, the Paying Agent or the Authenticating
Agent in accordance with their standard procedures.

            (b) No transfer of a Class B-4, Class B-5 or Class B-6 Certificate
shall be made unless the registration requirements of the 1933 Act and any
applicable State securities laws are complied with, or such transfer is exempt
from the registration requirements under said Act and laws. In the event that a
transfer is to be made in reliance upon an exemption from said Act or laws, the
Master Servicer shall require the transferee (other than an affiliate of the
Depositor on the Closing Date) to execute an investment letter in the form of
Exhibit J hereto certifying to the Depositor and the Master Servicer the facts
surrounding such transfer, which investment letter shall not be an expense of
the Depositor or the Master Servicer. The Holder of a Class B-4, Class B-5 or
Class B-6 Certificate desiring to effect such transfer shall, and does hereby
agree to, indemnify the Trustee, the Depositor, the Master Servicer and any
Paying Agent 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. Neither
the Depositor nor the Master Servicer is under an obligation to register the
Class B-4, Class B-5 or Class B-6 Certificates under said Act or any other
securities law. For the purposes of this Section 5.02(b) the representations
required in any investment letter (in substantially the form attached hereto as
Exhibit J for any transfer of a Class B-4, Class B-5 or Class B-6 Certificate)
shall be deemed to have been made in connection with the transfer of any Class
B-4, Class B-5 or Class B-6 Certificate that is a Book-Entry Certificate.

            (c) No transfer of a Class B-4, Class B-5 or Class B-6 Certificate
shall be made (other than to an affiliate of the Depositor on the Closing Date)
unless the Master Servicer and the Depositor shall have received (i) a
representation letter from the transferee in the form of Exhibit J hereto, to
the effect that either (a) such transferee is not an employee benefit plan or
other retirement arrangement subject to Title I of ERISA or Code Section 4975,
or a governmental plan, as defined in Section 3(32) of ERISA, subject to any
federal, state or local law ("Similar Law") which is to a material extent
similar to the foregoing provisions of ERISA or the Code (collectively, a
"Plan") and is not a person acting on behalf of or using the assets of any such
Plan, which representation letter shall not be an expense of the Depositor or
the Master Servicer or (b) if such transferee is an insurance company, (A) the
source of funds used to purchase the Class B-4, Class B-5 or Class B-6
Certificate is an "insurance company general account" (as such term is defined
in Section V(e) of Prohibited Transaction Class Exemption 95-60 ("PTE 95-60"),
60 Fed. Reg. 35925 (July 12, 1995)), (B) there is no Plan with respect to which
the amount of such general account's reserves and liabilities for the
contract(s) held by or on behalf of such Plan and all other Plans maintained by
the same employer (or affiliate thereof as defined in Section V(a)(1) of PTE
95-60) or by the same employee organization exceeds 10% of the total of all
reserves and liabilities of such general account (as such amounts are determined
under Section I(a) of PTE 95-60) at the date of acquisition and (C) the purchase
and holding of such Class B-4, Class B-5 or Class B-6 Certificate is covered by
Sections I and III of PTE 95-60 or (ii) in the case of any such Class B-4, Class
B-5 or Class B-6 Certificate presented for registration in the name of a Plan,
or a trustee of any such Plan, (A) an Opinion of Counsel satisfactory to the
Master Servicer and the Depositor to the effect that the purchase or holding of
such Class B-4, Class B-5 or Class B-6 Certificate will not constitute or result
in a non-exempt prohibited transaction within the meaning of ERISA, Section 4975
of the Code or Similar Law and will not subject the Depositor or the Master
Servicer to any obligation in addition to those undertaken in this Agreement,
which Opinion of Counsel shall not be an expense of the Depositor or the Master
Servicer and (B) such other opinions of counsel, Officer's Certificates and
agreements as the Depositor or the Master Servicer may require in connection
with such transfer, which opinions of counsel, Officer's Certificates and
agreements shall not be an expense of the Depositor or the Master Servicer. The
applicable representation set forth in clause (i) shall be deemed to have been
made to the Depositor and Master Servicer by the acceptance by a transferee of
the beneficial interest in any such Class B-4, Class B-5 and Class B-6
Certificates, unless the Depositor and Master Servicer shall have received from
the transferee either an alternative representation acceptable in form and
substance to the Depositor and Master Servicer or the Opinion of Counsel and
other documentation set forth in clause (ii). The Class B-4, Class B-5 and Class
B-6 Certificates shall bear a legend referring to the foregoing restrictions
contained in this paragraph.

            (d) No legal or beneficial interest in all or any portion of the
Residual Certificate may be transferred directly or indirectly to a
"disqualified organization" within the meaning of Code Section 860E(e)(5) or an
agent of a disqualified organization (including a broker, nominee, or
middleman), to a Plan or a Person acting on behalf of or investing the assets of
a Plan (such Plan or Person, an "ERISA Prohibited Holder") or to an individual,
corporation, partnership or other person unless such transferee (i) is not a
Non-U.S. Person or (ii) is a Non-U.S. Person that holds the Residual Certificate
in connection with the conduct of a trade or business within the United States
and has furnished the transferor and the Master Servicer with an effective
Internal Revenue Service Form W-8ECI or (iii) is a Non-U.S. Person that has
delivered to both the transferor and the Master Servicer an opinion of a
nationally recognized tax counsel to the effect that the transfer of the
Residual Certificate to it is in accordance with the requirements of the Code
and the regulations promulgated thereunder and that such transfer of the
Residual Certificate will not be disregarded for federal income tax purposes
(any such person who is not covered by clauses (i), (ii) or (iii) above being
referred to herein as a "Non-permitted Foreign Holder"), and any such purported
transfer shall be void and have no effect. The Paying Agent shall not execute,
and shall not countersign (or cause the Authenticating Agent to countersign) and
deliver, a new Residual Certificate in connection with any such transfer to a
disqualified organization or agent thereof (including a broker, nominee or
middleman), an ERISA Prohibited Holder or a Non-permitted Foreign Holder, and
neither the Certificate Registrar nor the Paying Agent shall accept a surrender
for transfer or registration of transfer, or register the transfer of, the
Residual Certificate, unless the transferor shall have provided to the Master
Servicer an affidavit, substantially in the form attached as Exhibit H hereto,
signed by the transferee, to the effect that the transferee is not such a
disqualified organization, an agent (including a broker, nominee, or middleman)
for any entity as to which the transferee has not received a substantially
similar affidavit, an ERISA Prohibited Holder or a Non-permitted Foreign Holder,
which affidavit shall contain the consent of the transferee to any such
amendments of this Agreement as may be required to further effectuate the
foregoing restrictions on transfer of the Residual Certificate to disqualified
organizations, ERISA Prohibited Holders or Non-permitted Foreign Holders. Such
affidavit shall also contain the statement of the transferee that (i) the
transferee has historically paid its debts as they have come due and intends to
do so in the future, (ii) the transferee understands that it may incur
liabilities in excess of cash flows generated by the residual interest, (iii)
the transferee intends to pay taxes associated with holding the residual
interest as they become due (iv) the transferee will not cause income from the
Residual Certificate to be attributable to a foreign permanent establishment or
fixed base, within the meaning of an applicable income tax treaty, of such
transferee or any other Person, and (v) the transferee will not transfer the
Residual Certificate to any Person who does not provide an affidavit
substantially in the form attached as Exhibit H hereto.

            The affidavit described in the preceding paragraph, if not executed
in connection with the initial issuance of the Residual Certificate, shall be
accompanied by a written statement in the form attached as Exhibit I hereto,
signed by the transferor, to the effect that as of the time of the transfer, the
transferor has no actual knowledge that the transferee is a disqualified
organization, ERISA Prohibited Holder or Non-permitted Foreign Holder, and has
no knowledge or reason to know that the statements made by the transferee with
respect to clauses (i) and (iii) of the last sentence of the preceding paragraph
are not true. The Residual Certificate shall bear a legend referring to the
foregoing restrictions contained in this paragraph and the preceding paragraph.

            Upon actual knowledge of a Master Servicing Officer or a Responsible
Officer of the Paying Agent that any legal or beneficial interest in any portion
of the Residual Certificate has been transferred, directly or indirectly, to a
disqualified organization or agent thereof (including a broker, nominee, or
middleman) in contravention of the foregoing restrictions, (i) such transferee
shall be deemed to hold the Residual Certificate in constructive trust for the
last transferor who was not a disqualified organization or agent thereof, and
such transferor shall be restored as the owner of such Residual Certificate as
completely as if such transfer had never occurred, provided that the Master
Servicer may, but is not required to, recover any distributions made to such
transferee with respect to the Residual Certificate, and (ii) the Master
Servicer agrees to furnish to the Internal Revenue Service and to any transferor
of the Residual Certificate or such agent (within 60 days of the request
therefor by the transferor or agent) such information necessary to the
application of Code Section 860E(e) as may be required by the Code, including
but not limited to the present value of the total anticipated excess inclusions
with respect to the Residual Certificate (or portion thereof) for periods after
such transfer. At the election of the Master Servicer, the cost to the Master
Servicer of computing and furnishing such information may be charged to the
transferor or such agent referred to above; however, the Master Servicer shall
in no event be excused from furnishing such information.

            Section 5.03 Mutilated, Destroyed, Lost or Stolen Certificates.

            If (i) any mutilated Certificate is surrendered to the Paying Agent,
the Certificate Registrar or the Authenticating Agent, or the Paying Agent, the
Certificate Registrar or the Authenticating Agent receives evidence to its
satisfaction of the destruction, loss or theft of any Certificate, and (ii)
there is delivered to the Paying Agent, the Certificate Registrar or the
Authenticating Agent such security or indemnity as may be required by them to
hold each of them harmless, then, in the absence of notice to the Paying Agent,
the Certificate Registrar or the Authenticating Agent that such Certificate has
been acquired by a bona fide purchaser, the Paying Agent shall execute and
countersign (or cause the Authenticating Agent to countersign) and deliver, in
exchange for or in lieu of any such mutilated, destroyed, lost or stolen
Certificate, a new Certificate of like tenor and principal portion or Percentage
Interest and of the same Class. Upon the issuance of any new Certificate under
this Section, the Paying Agent or the Certificate Registrar 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 expense (including the fees and
expenses of the Paying Agent or the Authenticating Agent) in connection
therewith. Any duplicate Certificate issued pursuant to this Section shall
constitute complete and indefeasible evidence of ownership in the Trust Estate,
as if originally issued, whether or not the lost, stolen, or destroyed
Certificate shall be found at any time.

            Section 5.04 Persons Deemed Owners.

            Prior to the due presentation of a Certificate for registration of
transfer, the Depositor, the Master Servicer, the Trustee, the Paying Agent, the
Certificate Registrar and any agent of the Depositor, the Master Servicer, the
Trustee, the Paying Agent or the Certificate Registrar may treat the Person in
whose name any Certificate is registered as the owner of such Certificate for
the purpose of receiving distributions pursuant to Section 4.01, and for all
other purposes whatsoever, and neither the Depositor, the Master Servicer, the
Trustee, the Certificate Registrar, the Paying Agent nor any agent of the
Depositor, the Master Servicer, the Trustee, the Certificate Registrar or the
Paying Agent shall be affected by notice to the contrary.

            Section 5.05 Access to List of Certificateholders' Names and
                         Addresses.

            (a) If the Paying Agent is not acting as Certificate Registrar, the
Certificate Registrar shall furnish or cause to be furnished to the Paying
Agent, within 15 days after receipt by the Certificate Registrar of a request by
the Paying Agent in writing, a list, in such form as the Paying Agent may
reasonably require, of the names and addresses of the Certificateholders of each
Class as of the most recent Record Date.

            (b) If five or more Certificateholders (hereinafter referred to as
"applicants") apply in writing to the Certificate Registrar, and such
application states that the applicants desire to communicate with other
Certificateholders with respect to their rights under this Agreement or under
the Certificates and is accompanied by a copy of the communication which such
applicants propose to transmit, then the Certificate Registrar shall, within
five Business Days following the receipt of such application, afford such
applicants access during normal business hours to the most recent list of
Certificateholders held by the Certificate Registrar.

            (c) Every Certificateholder, by receiving and holding a Certificate,
agrees with the Depositor, the Master Servicer, the Certificate Registrar, the
Paying Agent and the Trustee that neither the Depositor, the Master Servicer,
the Certificate Registrar, the Paying Agent nor the Trustee shall be held
accountable by reason of the disclosure of any such information as to the names,
addresses and Percentage Interests of the Certificateholders hereunder,
regardless of the source from which such information was delivered.

            Section 5.06 Maintenance of Office or Agency.

            The Certificate Registrar will maintain, at its expense, an office
or agency where Certificates may be surrendered for registration of transfer or
exchange and where notices and demands to or upon the Certificate Registrar in
respect of the Certificates and this Agreement may be served. The Certificate
Registrar initially designates the Corporate Trust Office of the Certificate
Registrar, if any, as its offices and agencies for said purposes.

            Section 5.07 Definitive Certificates.

            If (A) the Clearing Agency advises the Paying Agent in writing that
the Clearing Agency is no longer willing or able properly to discharge its
responsibilities as depository with respect to the Book-Entry Certificates, and
(B) the Depositor is unable to locate a qualified successor, the Paying Agent
shall notify the Beneficial Owners, through the Clearing Agency, of the
occurrence of any such event and of the availability of Definitive Certificates
to Beneficial Owners requesting the same. Upon surrender to the Paying Agent by
the Clearing Agency of the Certificates held of record by its nominee,
accompanied by reregistration instructions and directions to execute and
authenticate new Certificates from the Depositor, the Paying Agent shall execute
and cause the Authenticating Agent to countersign Definitive Certificates for
delivery at its Corporate Trust Office. The Depositor shall arrange for, and
will bear all costs of, the printing and issuance of such Definitive
Certificates. Except with the consent of the Depositor, the Paying Agent shall
not execute or cause the Authenticating Agent to countersign Definitive
Certificates in exchange for Book-Entry Certificates except as set forth above.
Neither the Depositor, the Master Servicer nor the Paying Agent shall be liable
for any delay in delivery of such instructions by the Clearing Agency and may
conclusively rely on, and shall be protected in relying on, such instructions.

            Section 5.08 Notices to Clearing Agency.

            Whenever notice or other communication to the Holders of Book-Entry
Certificates is required under this Agreement, unless and until Definitive
Certificates shall have been issued to Beneficial Owners pursuant to Section
5.07, the Paying Agent shall give all such notices and communications specified
herein to be given to Holders of Book-Entry Certificates to the Clearing Agency.

<PAGE>

                                   ARTICLE VI

                      THE DEPOSITOR AND THE MASTER SERVICER

            Section 6.01 Liability of the Depositor and the Master Servicer.

            The Depositor and the Master Servicer shall each be liable in
accordance herewith only to the extent of the obligations specifically imposed
by this Agreement and undertaken hereunder by the Depositor and the Master
Servicer.

            Section 6.02 Merger or Consolidation of the Depositor or the Master
                         Servicer.

            Subject to the following paragraph (a) the Depositor will keep in
full effect its existence, rights and franchises as a corporation under the laws
of the jurisdiction of its incorporation, and 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 and (b) the Master
Servicer will keep in full effect its power and authority as a national banking
association under the laws of the jurisdiction of its organization, and will
obtain and preserve its qualification to do business 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 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 or Master Servicer shall be a party, or any Person
succeeding to the business of the Depositor or Master Servicer, shall be the
successor of the Depositor or Master Servicer hereunder, without the execution
or filing of any paper or any further act on the part of any of the parties
hereto, anything herein to the contrary notwithstanding; provided, however,
that, (a) in the case of the Master Servicer, any such successor or resulting
Person shall have a net worth of not less than $15,000,000 and be qualified to
service mortgage loans for Fannie Mae or Freddie Mac and (b) the Master Servicer
and such successor or surviving Person shall notify the Depositor and the
Trustee of any such merger, conversion or consolidation at least two Business
Days prior to the effective date thereof (unless giving such prior notice would
be prohibited by applicable law or by a confidentiality agreement, in which case
notice shall be given by 12 noon Eastern time one Business Day after such merger
or consolidation).

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

            Neither the Depositor nor the Master Servicer nor any subcontractor
nor any of the directors, officers, employees or agents of any of them shall be
under any liability to the Trust Estate or the Certificateholders and all such
Persons shall be held harmless 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 any such
Person against any breach of warranties or representations made herein 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 Master Servicer, any subcontractor, and any director, officer, employee or
agent of any of them shall be entitled to indemnification by the Trust Estate
and will be held harmless against any loss, liability or expense incurred in
connection with the performance of their duties and obligations, the exercise of
their rights or any legal action (including but not limited to, costs and
expenses of litigation, and of investigation, attorney's fees, damages,
judgments and amounts paid in settlement) under this Agreement (in the case of
the Depositor, including but not limited to, any loss, liability or expense
incurred in connection with the Depositor's indemnification of the Custodian
pursuant to the Custodial Agreement), the Certificates or the Mortgage Loans
(except for amounts due by the Depositor in connection with the breach of a
representation or warranty covering the Mortgage Loans), including, in the case
of the Master Servicer, any indemnity amounts paid by the Master Servicer to a
Servicer pursuant to the applicable Servicing Agreement, other than any loss,
liability or expense (including without limitation, expenses payable by the
Master Servicer under Section 8.06) incurred by reason of willful misfeasance,
bad faith or gross negligence in the performance of his or its duties hereunder
or by reason of reckless disregard of his or its obligations and duties
hereunder. The Depositor, the Master Servicer and any of the directors,
officers, employees or agents of either 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. Neither the Depositor nor 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 the Depositor or 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 if the Certificateholders
offer to the Depositor or the Master Servicer, as the case may be, reasonable
security or indemnity against the costs, expenses and liabilities which may be
incurred therein or thereby. In such event, the legal expenses and costs of such
action and any liability resulting therefrom shall be expenses, costs and
liabilities of the Trust Estate, and the Depositor or the Master Servicer shall
be entitled to be reimbursed therefor out of the Certificate Account, and such
amounts shall, on the following Distribution Date or Distribution Dates, be
allocated in reduction of distributions on the Class A Certificates and Class B
Certificates in the same manner as Realized Losses are allocated pursuant to
Section 4.02(a).

            Section 6.04 Resignation of the Master Servicer.

            The Master Servicer shall not resign from the obligations and duties
hereby imposed on it except (a) upon appointment of a successor master servicer
and receipt by the Trustee of a letter from each Rating Agency that such a
resignation and appointment will not result in a downgrading of the rating of
any of the Certificates, (b) upon determination that its duties hereunder are no
longer permissible under applicable law, or (c) pursuant to Section 6.06. Any
such determination under clause (b) permitting the resignation of the Master
Servicer shall be evidenced by an Opinion of Counsel to such effect delivered to
the Trustee. No such resignation shall become effective until the Trustee or a
successor master servicer shall have assumed the Master Servicer's
responsibilities, duties, liabilities and obligations hereunder.

            Section 6.05 Compensation to the Master Servicer.

            The Master Servicer shall be entitled to receive a monthly fee equal
to the Master Servicing Fee, as compensation for services rendered by the Master
Servicer under this Agreement. The Master Servicer also will be entitled to any
late reporting fees paid by a Servicer pursuant to its Servicing Agreement, any
investment income on funds on deposit in the Certificate Account invested in
accordance with Section 3.01(c), any investment income on funds on deposit in
the Payment Account invested in accordance with Section 4.03(a) and any
Liquidation Profits to which a Servicer is not entitled under its Servicing
Agreement.

            Section 6.06 Assignment or Delegation of Duties by Master Servicer.

            (a) The Master Servicer shall not assign or transfer any of its
rights, benefits or privileges under this Agreement to any other Person, or
delegate to or subcontract with, or authorize or appoint any other Person to
perform any of the duties, covenants or obligations to be performed by the
Master Servicer without the prior written consent of the Trustee, and any
agreement, instrument or act purporting to effect any such assignment, transfer,
delegation or appointment shall be void. Notwithstanding the foregoing, subject
to Section 6.06(b), the Master Servicer shall have the right without the prior
written consent of the Trustee (i) to assign its rights and delegate its duties
and obligations hereunder; provided, however, that (a) the purchaser or
transferee accepting such assignment or delegation is qualified to service
mortgage loans for Fannie Mae or Freddie Mac, and executes and delivers to the
Trustee an agreement, in form and substance reasonably satisfactory to the
Trustee, which contains an assumption by such purchaser or transferee of the due
and punctual performance and observance of each covenant and condition to be
performed or observed by the Master Servicer hereunder from and after the date
of such agreement; and (b) each applicable Rating Agency's rating of any
Certificates in effect immediately prior to such assignment, sale or transfer is
not reasonably likely to be qualified, downgraded or withdrawn as a result of
such assignment, sale or transfer and the Certificates are not reasonably likely
to be placed on credit review status by any such Rating Agency; and (ii) to
delegate to, subcontract with, authorize, or appoint an affiliate of the Master
Servicer to perform and carry out any duties, covenants or obligations to be
performed and carried out by the Master Servicer under this Agreement and hereby
agrees so to delegate, subcontract, authorize or appoint to an affiliate of the
Master Servicer any duties, covenants or obligations to be performed and carried
out by the Master Servicer to the extent that such duties, covenants or
obligations are to be performed in any state or states in which the Master
Servicer is not authorized to do business as a foreign corporation but in which
the affiliate is so authorized. In no case, however, shall any permitted
assignment and delegation relieve the Master Servicer of any liability to the
Trustee or the Depositor under this Agreement, incurred by it prior to the time
that the conditions contained in clause (i) above are met.

            (b) Notwithstanding anything contained herein to the contrary, to
the extent the Master Servicer engages any affiliate or third party vendor, in
connection with the performance of any of its duties under this Agreement, the
Master Servicer shall immediately notify the Depositor in writing of such
engagement (to the extent it has not already notified the Depositor pursuant to
clause (a) above); provided however, that prior to engaging any affiliate or
third party vendor in connection with the performance of any of its duties under
this Agreement, the Master Servicer shall determine (i) if such affiliates or
third party vendors would be a Servicing Function Participant and (ii) if such
affiliate or third party vendor would be a "servicer" within the meaning of Item
1101 of Regulation AB (an "Additional Master Servicer") and meets the criteria
in Item 1108(a)(2)(i), (ii) or (iii) of Regulation AB. If the Master Servicer
has determined that such affiliates or third party vendors are a Servicing
Function Participant, the Master Servicer shall cause such Servicing Function
Participant to prepare and deliver to the Master Servicer a separate assessment
and attestation report, as contemplated by Section 3.11 of this Agreement. In
addition, if the Master Servicer has determined that any such affiliate or third
party vendor would be an Additional Master Servicer and meets the criteria in
Item 1108(a)(2)(i), (ii) or (iii) of Regulation AB, the Master Servicer shall
cause such Additional Master Servicer to prepare and deliver to the Master
Servicer a separate compliance statement as contemplated by Section 3.05 of this
Agreement. In addition, if the Master Servicer determines any such affiliate or
third party vendor would be a "servicer" within the meaning of Item 1101 of
Regulation AB, the Master Servicer shall not engage such affiliate or third
party vendor unless it provides the Master Servicer and the Depositor the
information required by Section 1108(b) and 1108(c) of Regulation AB prior to
such engagement.

            (c) In the event of any assignment of rights or delegation of duties
of the Master Servicer, the Master Servicer shall report such event on Form 8-K
within four Business Days after the effective date thereof.

            Section 6.07 Indemnification of Trustee and Depositor by Master
                         Servicer.

            The Master Servicer shall indemnify and hold harmless the Trustee
and the Depositor and any director, officer or agent thereof against any loss,
liability or expense, including reasonable attorney's fees, arising out of, in
connection with or incurred by reason of (a) willful misfeasance, bad faith or
negligence in the performance of duties of the Master Servicer under this
Agreement or by reason of reckless disregard of its obligations and duties under
this Agreement, including, but not limited to the Master Servicer's obligation
to deliver any information, report, certification, accountants' letter or other
material required to comply with Regulation AB or (b) any material breach by the
Master Servicer of any of the representations and warranties contained in
Section 2.03(a). Any payment pursuant to this Section made by the Master
Servicer to the Trustee or the Depositor shall be from such entity's own funds,
without reimbursement therefor. The provisions of this Section 6.07 shall
survive the termination of this Agreement.

            Section 6.08 Master Servicer Errors and Omissions Policy.

            The Master Servicer shall maintain, at all times and at its own
expense, a Master Servicer Errors and Omissions Policy, which policy shall have
such terms and coverage amounts as are comparable to those of errors and
omissions policies maintained by master servicers of mortgage loans generally.

            The Master Servicer Errors and Omissions Policy shall insure the
Master Servicer, its successors and assigns, against any losses resulting from
negligence, errors or omissions on the part of officers, employees or other
persons acting on behalf of the Master Servicer in the performance of its duties
as Master Servicer pursuant to this Agreement.

            The Master Servicer shall maintain in effect the Master Servicer
Errors and Omissions Policy at all times and the Master Servicer Errors and
Omissions Policy may not be canceled, permitted to lapse or otherwise terminated
without the acquisition of comparable coverage by the Master Servicer.

<PAGE>

                                   ARTICLE VII

                                     DEFAULT

            Section 7.01 Events of Default.

            In case one or more of the following Events of Default by the Master
Servicer shall occur and be continuing, that is to say:

            (i) any failure by the Master Servicer to remit any funds to the
      Paying Agent as required by Section 4.03 continues unremedied for a period
      of three business days after either (a) receipt by the Master Servicer of
      written notice of such failure, requiring the same to be remedied, shall
      have been given to the Master Servicer by the Trustee or to the Master
      Servicer and the Trustee by the holders of Certificates evidencing in the
      aggregate not less than 25% of the aggregate Voting Interest represented
      by all Certificates or (b) solely in the case of the failure of the Master
      Servicer to remit any Periodic Advance required to be remitted pursuant to
      Section 3.03, the date upon which the Master Servicer delivered to the
      Trustee the certification required by Section 3.03(a);

            (ii) any failure on the part of the Master Servicer to observe or
      perform in any material respect any of its covenants or agreements under
      Sections 3.05, 3.11 or 3.12 hereof, subject to any cure period set forth
      in such sections;

            (iii) 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 in the Certificates or in
      this Agreement, which continues unremedied for a period of 60 days after
      the date on which written notice of such failure, requiring the same to be
      remedied, shall have been given to the Master Servicer by the Trustee or
      the Depositor, or to the Master Servicer and the Trustee by the holders of
      Certificates evidencing in the aggregate not less than 25% of the
      aggregate Voting Interest represented by all Certificates;

            (iv) a decree or order of a court or agency or supervisory authority
      having jurisdiction in the premises for the appointment of a trustee,
      conservator, receiver or liquidator in any bankruptcy, insolvency,
      readjustment of debt, marshaling of assets and liabilities or similar
      proceedings, or for the winding-up or liquidation of its affairs, shall
      have been entered against the Master Servicer and such decree or order
      shall have remained in force undischarged and unstayed for a period of 60
      days;

            (v) the Master Servicer shall consent to the appointment of a
      trustee, conservator, receiver or liquidator or liquidating committee in
      any bankruptcy, insolvency, readjustment of debt, marshaling of assets and
      liabilities, voluntary liquidation or similar proceedings of or relating
      to the Master Servicer, or of or relating to all or substantially all of
      its property;

            (vi) 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, bankruptcy or reorganization statute, make
      an assignment for the benefit of its creditors or voluntarily suspend
      payment of its obligations;

            (vii) the Master Servicer shall be dissolved, or shall dispose of
      all or substantially all of its assets; or consolidate with or merge into
      another entity or shall permit another entity to consolidate or merge into
      it, such that the resulting entity does not meet the criteria for a
      successor servicer, as specified in Section 6.02 hereof; or

            (viii) the Master Servicer and any Subservicer appointed by it
      becomes ineligible to service for both Fannie Mae and Freddie Mac, which
      ineligibility continues unremedied for a period of 90 days;

then, and in each and every such case, subject to applicable law, so long as an
Event of Default shall not have been remedied, either the Trustee or the holders
of Certificates evidencing in the aggregate not less than 66 2/3% of the
aggregate Voting Interest represented by all Certificates, by notice in writing
to the Master Servicer (and to the Trustee if given by the Certificateholders)
may terminate all of the rights and obligations of the Master Servicer under
this Agreement and in and to the Mortgage Loans, but without prejudice to any
rights which the Master Servicer may have to the aggregate Master Servicing Fees
due prior to the date of transfer of the Master Servicer's responsibilities
hereunder, reimbursement of expenses to the extent permitted by this Agreement,
Periodic Advances and other advances of its own funds. Upon 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 or the
Mortgage Loans or otherwise, shall pass to and be vested in the Trustee pursuant
to and under this Section, subject to the provisions of Section 7.05; and,
without limitation, the Trustee is hereby authorized and empowered to execute
and deliver, on behalf of the Master Servicer, as attorney-in-fact or otherwise,
any and all documents and other instruments, and to do or accomplish all other
acts or things necessary or appropriate to effect the purposes of such notice of
termination, whether to complete the transfer and endorsement or assignment of
the Mortgage Loans and related documents or otherwise. The Master Servicer
agrees to cooperate with the Trustee in effecting the termination of the Master
Servicer's responsibilities and rights hereunder and shall promptly provide the
Trustee all documents and records reasonably requested by it to enable it to
assume the Master Servicer's functions hereunder and shall promptly also
transfer to the Trustee all amounts which then have been or should have been
deposited in the Certificate Account by the Master Servicer or which are
thereafter received by the Master Servicer with respect to the Mortgage Loans.

            Section 7.02 Other Remedies of Trustee.

            During the continuance of any Event of Default, so long as such
Event of Default shall not have been remedied, the Trustee, in addition to the
rights specified in Section 7.01, shall have the right, in its own name as
trustee of an express trust, to take all actions now or hereafter existing at
law, in equity or by statute to enforce its rights and remedies and to protect
the interests, and enforce the rights and remedies, of the Certificateholders
(including the institution and prosecution of all judicial, administrative and
other proceedings and the filing of proofs of claim and debt in connection
therewith). Except as otherwise expressly provided in this Agreement, no remedy
provided for by this Agreement shall be exclusive of any other remedy, and each
and every remedy shall be cumulative and in addition to any other remedy and no
delay or omission to exercise any right or remedy shall impair any such right or
remedy or shall be deemed to be a waiver of any Event of Default.

            Section 7.03 Directions by Certificateholders and Duties of Trustee
                         During Event of Default.

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

            Section 7.04 Action upon Certain Failures of the Master Servicer and
                         upon Event of Default.

            In the event that the Trustee shall have knowledge of any failure of
the Master Servicer specified in Section 7.01(i), (ii) or (iii) which would
become an Event of Default upon the Master Servicer's failure to remedy the same
after notice, the Trustee may, but need not if the Trustee deems it not in the
Certificateholders' best interest, give notice thereof to the Master Servicer;
provided however that, without limiting any remedy as a result of such failure,
the Trustee shall be required to give notice thereof to the Master Servicer in
the case of the failure by the Master Servicer to observe or perform any of its
covenants under Sections 3.05, 3.11, 3.12, 6.02 or 6.06(b) of this Agreement.
For all purposes of this Agreement, in the absence of actual knowledge by a
Responsible Officer of the Trustee, the Trustee shall not be deemed to have
knowledge of any failure of the Master Servicer as specified in Section 7.01(i),
(ii) and (iii) or any Event of Default unless notified thereof in writing by the
Master Servicer or by a Certificateholder.

            Section 7.05 Trustee to Act; Appointment of Successor.

            When the Master Servicer receives notice of termination pursuant to
Section 7.01 or the Trustee receives the resignation of the Master Servicer
evidenced by an Opinion of Counsel pursuant to Section 6.04, the Trustee shall
be the successor in all respects to the Master Servicer in its capacity as
master servicer under this Agreement and the transactions set forth or provided
for herein and shall have the rights and powers and be subject to all the
responsibilities, duties and liabilities relating thereto placed on the Master
Servicer by the terms and provisions hereof and in its capacity as such
successor shall have the same limitation of liability herein granted to the
Master Servicer. In the event that the Trustee is succeeding to the Master
Servicer as the Master Servicer, as compensation therefor, the Trustee shall be
entitled to receive monthly such portion of the Master Servicing Fee, together
with such other master servicing compensation as is agreed to at such time by
the Trustee and the Master Servicer, but in no event more than 25% thereof until
the date of final cessation of the Master Servicer's master servicing activities
hereunder. Notwithstanding the above, the Trustee may, if it shall be unwilling
to so act, or shall, if it is unable to so act or to obtain a qualifying bid as
described below, appoint, or petition a court of competent jurisdiction to
appoint, any housing and home finance institution, bank or mortgage servicing
institution having a net worth of not less than $10,000,000 and meeting such
other standards for a successor master servicer as are set forth herein, as the
successor to the Master Servicer hereunder in the assumption of all or any part
of the responsibilities, duties or liabilities of the Master Servicer hereunder;
provided, however, that until such a successor master servicer is appointed and
has assumed the responsibilities, duties and liabilities of the Master Servicer
hereunder, the Trustee shall continue as the successor to the Master Servicer as
provided above. Upon cessation of the Master Servicer's master servicing
activities hereunder, the Trustee or any other successor master servicer shall
be entitled to compensation not to exceed the compensation specified in Section
6.05 hereof, which amount shall include compensation for acting as paying agent.
If the Master Servicer and the Paying Agent are not the same party, the Master
Servicer shall pay the compensation of the Paying Agent. In the event the
Trustee is required to solicit bids as provided above, the Trustee shall
solicit, by public announcement, bids from housing and home finance
institutions, banks and mortgage servicing institutions meeting the
qualifications set forth in the preceding sentence for the purchase of the
master servicing functions. Such public announcement shall specify that the
successor master servicer shall be entitled to the full amount of the Master
Servicing Fee as compensation together with the other master servicing
compensation in the form of late reporting fees or otherwise as provided in
Section 6.05, which amount shall include compensation for acting as paying
agent. Within 30 days after any such public announcement, the Trustee shall
negotiate and effect the sale, transfer and assignment of the master servicing
rights and responsibilities hereunder to the qualified party submitting the
highest qualifying bid. The Trustee shall deduct all costs and expenses of any
public announcement and of any sale, transfer and assignment of the master
servicing rights and responsibilities hereunder from any sum received by the
Trustee from the successor to the Master Servicer in respect of such sale,
transfer and assignment. After such deductions, the remainder of such sum shall
be paid by the Trustee to the Master Servicer at the time of such sale, transfer
and assignment to the Master Servicer's successor. The Trustee and such
successor shall take such action, consistent with this Agreement, as shall be
necessary to effectuate any such succession. The Master Servicer agrees to
cooperate with the Trustee and any successor master servicer in effecting the
termination of the Master Servicer's servicing responsibilities and rights
hereunder and shall promptly provide the Trustee or such successor master
servicer, as applicable, all documents and records reasonably requested by it to
enable it to assume the Master Servicer's function hereunder and shall promptly
also transfer to the Trustee or such successor master servicer, as applicable,
all amounts which then have been or should have been deposited in the
Certificate Account by the Master Servicer or which are thereafter received by
the Master Servicer with respect to the Mortgage Loans. Neither the Trustee nor
any other successor master servicer shall be deemed to be in default hereunder
by reason of any failure to make, or any delay in making, any distribution
hereunder or any portion thereof caused by (i) the failure of the Master
Servicer to deliver, or any delay in delivering, cash, documents or records to
it, or (ii) restrictions imposed by any regulatory authority having jurisdiction
over the Master Servicer. Notwithstanding anything to the contrary contained in
Section 7.01 above or this Section 7.05, the Master Servicer shall retain all of
its rights and responsibilities hereunder, and no successor (including the
Trustee) shall succeed thereto, if the assumption thereof by such successor
would cause the rating assigned to any Certificates to be revoked, downgraded or
placed on credit review status (other than for possible upgrading) by either
Rating Agency and the retention thereof by the Master Servicer would avert such
revocation, downgrading or review.

            All costs associated with the appointment of a successor master
servicer, to the extent not deducted from any sum received by the Trustee from
the successor master servicer, shall be paid to the Person that incurred them by
the predecessor master servicer. Without limiting the predecessor master
servicer's obligation, if the predecessor master servicer fails to pay such
costs, such costs shall be reimbursed by the Trust.

            The predecessor Master Servicer and successor Master Servicer shall
notify the Depositor and Trustee of any such appointment at least two Business
Days prior to the effective date thereof and shall provide the Depositor and the
Trustee with all information required by the Depositor to comply with its
reporting obligation under Item 6.02 of Form 8-K not later than the effective
date of such appointment and the successor Master Servicer shall report such
event on Form 8-K within four business days of the occurrence of such event.

            Section 7.06 Notification to Certificateholders.

            Upon any termination of the Master Servicer or appointment of a
successor master servicer, in each case as provided herein, the Trustee shall
give prompt written notice thereof to Certificateholders at their respective
addresses appearing in the Certificate Register. The Trustee shall also, within
45 days after the occurrence of any Event of Default known to the Trustee, give
written notice thereof to Certificateholders at their respective addresses
appearing in the Certificate Register, unless such Event of Default shall have
been cured or waived within said 45 day period.

<PAGE>

                                  ARTICLE VIII

                             CONCERNING THE TRUSTEE

            Section 8.01 Duties of Trustee.

            The Trustee, prior to the occurrence of an Event of Default of which
a Responsible Officer of the Trustee shall have actual knowledge and after the
curing of all Events of Default which may have occurred, undertakes to perform
such duties and only such duties as are specifically set forth in this
Agreement. In case an Event of Default of which a Responsible Officer of the
Trustee shall have actual knowledge has occurred (which has not been cured), the
Trustee, subject to the provisions of Sections 7.01, 7.03, 7.04 and 7.05, 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.

            The Trustee, upon receipt of all resolutions, certificates,
statements, opinions, reports, documents, orders or other instruments furnished
to the Trustee, which are specifically required to be furnished pursuant to any
provision of this Agreement, shall examine them to determine whether they are in
the form required by this Agreement; provided, however, that the Trustee shall
not be responsible for the accuracy or content of any certificate, statement,
instrument, report, notice or other document furnished by the Master Servicer or
the Servicers hereunder.

            No provision of this Agreement shall be construed to relieve the
Trustee from liability for its own negligent action, its own negligent failure
to act or its own willful misconduct; provided, however, that:

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

            (ii) The Trustee shall not be personally liable with respect to any
      action taken, suffered or omitted to be taken by it in good faith in
      accordance with the direction of holders of Certificates which evidence in
      the aggregate not less than 25% of the Voting Interest represented by all
      Certificates relating to the time, method and place of conducting any
      proceeding for any remedy available to the Trustee, or exercising any
      trust or power conferred upon the Trustee, under this Agreement;

            (iii) The Trustee shall not be liable for any error of judgment made
      in good faith by any of its Responsible Officers, unless it shall be
      proved that the Trustee or such Responsible Officer, as the case may be,
      was negligent in ascertaining the pertinent facts; and

            (iv) The Trustee shall not be required to take notice or be deemed
      to have notice or knowledge of any default or Event of Default unless a
      Responsible Officer of the Trustee shall have received written notice or
      obtained actual knowledge thereof. In absence of such notice or actual
      knowledge, the Trustee may conclusively assume that there is no default or
      Event of Default.

            None of the provisions contained in this Agreement shall require the
Trustee to expend or risk its own funds or otherwise incur personal financial
liability in the performance of any of its duties hereunder or in the exercise
of any of its rights or powers if there is reasonable ground for believing that
repayment of such funds or adequate indemnity against such risk or liability is
not reasonably assured to it.

            Section 8.02 Certain Matters Affecting the Trustee.

            Except as otherwise provided in Section 8.01:

            (i) The Trustee may request and rely and shall be protected in
      acting or refraining from acting upon any resolution, Officer's
      Certificate, certificate of auditors or any other certificate, statement,
      instrument, opinion, report, notice, request, consent, order, appraisal,
      bond or other paper or document believed by it to be genuine and to have
      been signed or presented by the proper party or parties and the manner of
      obtaining consents and evidencing the authorization of the execution
      thereof shall be subject to such reasonable regulations as the Trustee may
      prescribe;

            (ii) The Trustee may consult with counsel, 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) The Trustee shall not be personally 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;

            (iv) Subject to Section 7.04, the Trustee shall not be accountable,
      shall have no liability and makes no representation as to any acts or
      omissions hereunder of the Master Servicer until such time as the Trustee
      may be required to act as Master Servicer pursuant to Section 7.05 and
      thereupon only for the acts or omissions of the Trustee as successor
      Master Servicer;

            (v) 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 such agent or attorney appointed by any other
      party to this Agreement, including without limitation, the appointment of
      any custodian;

            (vi) The Trustee shall be under no obligation to exercise any of the
      trusts or powers vested in it by the Agreement, 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 security or indemnity satisfactory to the Trustee against the
      costs, expenses and liabilities which may be incurred therein or herein
      (which in the case of Certificateholders representing in the aggregate not
      less than 66-2/3% of the aggregate Voting Interests will be deemed
      satisfied by a letter agreement with respect to such costs from such
      Certificateholders);

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

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

            Section 8.03 Trustee Not Required to Make Investigation.

            Prior to the occurrence of an Event of Default of which a
Responsible Officer of the Trustee shall have actual knowledge hereunder and
after the curing of all Events of Default which may have occurred, the Trustee
shall not be bound to make any investigation into the facts or matters stated in
any resolution, certificate, statement, instrument, opinion, report, notice,
request, consent, order, appraisal, bond, Mortgage, Mortgage Note or other paper
or document (provided the same appears regular on its face), unless requested in
writing to do so by holders of Certificates evidencing in the aggregate not less
than 51% of the Voting Interest represented by all Certificates; provided,
however, that if the payment within a reasonable time to the Trustee of the
costs, expenses or liabilities likely to be incurred by it in the making of such
investigation is, in the opinion of the Trustee, not reasonably assured to the
Trustee by the security afforded to it by the terms of this Agreement, the
Trustee may require indemnity reasonably satisfactory to the Trustee against
such cost, expense or liability as a condition to so proceeding. The reasonable
expense of every such investigation shall be paid by the Master Servicer or, if
paid by the Trustee shall be repaid by the Master Servicer upon demand from the
Master Servicer's own funds.

            Section 8.04 Trustee Not Liable for Certificates or Mortgage Loans.

            The recitals contained herein and in the Certificates shall be taken
as the statements of the Depositor, and the Trustee assumes no responsibility as
to the correctness of the same. The Trustee makes no representation for the
correctness of the same. The Trustee makes no representation as to the validity
or sufficiency of this Agreement or of the Certificates or of any Mortgage Loan
or related document. Subject to Section 2.04, the Trustee 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 Master Servicer in respect of the Mortgage
Loans deposited in or withdrawn from the Certificate Account by the Master
Servicer or, in its capacity as trustee, for investment of any such amounts.

            Section 8.05 Trustee May Own Certificates.

            The Trustee, and any agent thereof, in its individual or any other
capacity, may become the owner or pledgee of Certificates with the same rights
it would have if it were not Trustee or such agent and may transact banking
and/or trust business with the Depositor, the Master Servicer or their
Affiliates.

            Section 8.06 The Master Servicer to Pay Fees; Limitation on
                         Liability.

            The Master Servicer covenants and agrees to pay to the Trustee from
time to time, from its own funds, and the Trustee shall be entitled to receive,
reasonable compensation (which shall not be limited by any provision of law in
regard to the compensation of a trustee of an express trust, but which shall not
include the initial acceptance and/or legal fee of the Trustee which shall be
paid by the Depositor) for all services rendered by it in the execution of the
trusts hereby created and in the exercise and performance of any of the powers
and duties hereunder of the Trustee.

            In addition, except as otherwise agreed upon in writing by the
Master Servicer and the Trustee, the Trust shall reimburse the Trustee for all
reasonable expenses, disbursements and advances incurred or made by the Trustee
in accordance with any of the provisions of this Agreement to the extent
permitted by Treasury Regulations Section 1.860G-1(b)(3), except for (i) any
such expense, disbursement or advance arising from the Trustee's gross
negligence, bad faith or willful misconduct and (ii) any routine ongoing
expenses incurred by the Trustee in the ordinary course of its duties as Trustee
hereunder or for any other expenses.

            The Trustee and any director, officer, employee or agent of the
Trustee shall be entitled to indemnification by the Trust Estate and held
harmless against any loss, liability or expense (including reasonable attorney's
fees) (a) incurred in connection with any claim or legal action relating to (i)
this Agreement, (ii) the Certificates, or (iii) the performance of any of the
Trustee's duties under this Agreement, unless the loss, liability or expense was
incurred by reason of willful misfeasance, bad faith or gross negligence in the
performance of any of the Trustee's duties under this Agreement and (b)
resulting from any tax or information return which was prepared by, or should
have been prepared by, the applicable Servicer or Master Servicer.

            The obligations of the Trust Estate under this Section 8.06 shall
survive the resignation and removal of the Trustee and payment of the
Certificates.

            Section 8.07 Eligibility Requirements.

            The Trustee hereunder shall at all times (i) be a corporation or
association having its principal office in a state and city acceptable to the
Depositor, organized and doing business under the laws of such 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 shall
be a member of a bank holding system, the aggregate combined capital and surplus
of which is at least $50,000,000, provided that its separate capital and surplus
shall at all times be at least the amount specified in Section 310(a)(2) of the
Trust Indenture Act of 1939, (ii) be subject to supervision or examination by
federal or state authority and (iii) have a credit rating or be otherwise
acceptable to the Rating Agencies such that neither of the Rating Agencies would
reduce their respective then current ratings of the Certificates (or have
provided such security from time to time as is sufficient to avoid such
reduction) as evidenced in writing by each Rating Agency. If such corporation or
association publishes reports of condition at least annually, pursuant to law or
to the requirements of the aforesaid supervising or examining authority, then
for the purposes of this Section the combined capital and surplus of such
corporation or association shall be deemed to be its combined capital and
surplus as set forth in its most recent report of condition so published. In
case at any time the Trustee shall cease to be eligible in accordance with the
provisions of this Section, the Trustee shall resign immediately in the manner
and with the effect specified in Section 8.08.

            Section 8.08 Resignation and Removal.

            The Trustee may at any time resign and be discharged from the trust
hereby created by giving written notice of resignation to the Master Servicer,
such resignation to be effective upon the appointment of a successor trustee.
Upon receiving such notice of resignation, the Master Servicer shall promptly
appoint a successor trustee by written instrument, in duplicate, one copy of
which instrument shall be delivered to the resigning entity and one copy to its
successor. If no successor trustee shall have been appointed and have accepted
appointment within 30 days after the giving of such notice of resignation, the
resigning Trustee may petition any court of competent jurisdiction for the
appointment of a successor trustee.

            If at any time the Trustee shall cease to be eligible in accordance
with the provisions of Section 8.07 and shall fail to resign after written
request for its resignation by the Master Servicer, or if at any time the
Trustee shall become incapable of acting, or an order for relief shall have been
entered in any bankruptcy or insolvency proceeding with respect to such entity,
or a receiver of such entity or of its property shall be appointed, or any
public officer shall take charge or control of the Trustee or of the property or
affairs of the Trustee for the purpose of rehabilitation, conversion or
liquidation, or the Master Servicer shall deem it necessary in order to change
the situs of the Trust Estate for state tax reasons, then the Master Servicer
shall remove the Trustee and appoint a successor trustee by written instrument,
in duplicate, one copy of which instrument shall be delivered to the Trustee so
removed and one copy to the successor trustee.

            In addition, if (a) the Trustee fails to comply with its obligations
to deliver any assessment of servicing compliance or registered public
accounting firm attestation reports required pursuant to Section 3.11 or (b) any
Servicing Function Participant engaged by the Trustee fails to comply with its
obligations to deliver any assessment of servicing compliance or registered
public accounting firm attestation reports, the Master Servicer, may, after
consultation with the Depositor, remove the Trustee and appoint a successor
trustee by written instrument, in duplicate, one copy of which instrument shall
be delivered to the Trustee so removed and one copy to the successor trustee.

            The Holders of Certificates evidencing in the aggregate not less
than 51% of the Voting Interests represented by all Certificates (except that
any Certificate registered in the name of the Depositor, the Master Servicer or
any affiliate thereof will not be taken into account in determining whether the
requisite Voting Interests has been obtained) may at any time remove the Trustee
and appoint a successor by written instrument or instruments, in triplicate,
signed by such holders or their attorneys-in-fact duly authorized, one complete
set of which instruments shall be delivered to the Master Servicer, one complete
set of which shall be delivered to the entity or entities so removed and one
complete set of which shall be delivered to the successor so appointed.

            Any resignation or removal of the Trustee and appointment of a
successor pursuant to any of the provisions of this Section shall become
effective upon acceptance of appointment by the successor as provided in Section
8.09.

            Section 8.09 Successor.

            Any successor trustee appointed as provided in Section 8.08 shall
execute, acknowledge and deliver to the Master Servicer and to its predecessor
trustee an instrument accepting such appointment hereunder, and thereupon the
resignation or removal of the predecessor trustee shall become effective, and
such successor, without any further act, deed or reconveyance, shall become
fully vested with all the rights, powers, duties and obligations of its
predecessor hereunder, with like effect as if originally named as trustee
herein. The predecessor trustee shall deliver to its successor all documents and
statements held by it hereunder, and the Depositor, the Master Servicer and the
predecessor entity 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 all such rights, powers, duties and
obligations.

            If the predecessor trustee has resigned, or has been removed for
cause, all costs associated with the appointment of a successor trustee shall be
paid to the Person that incurred them by the predecessor trustee. Without
limiting the predecessor trustee's obligation, if the predecessor trustee fails
to pay such costs, such costs shall be reimbursed by the Trust; provided
however, that if the predecessor trustee has been terminated without cause
pursuant to Section 8.08, all reasonable expenses incurred in complying with
this Section 8.09 shall be reimbursed by the Trust to the Person that incurred
them.

            No successor shall accept appointment as provided in this Section
unless at the time of such acceptance such successor shall be eligible under the
provisions of Section 8.07.

            Upon acceptance of appointment by a successor as provided in this
Section, the successor trustee shall mail notice of the succession of such
trustee hereunder to all Holders of Certificates at their addresses as shown in
the Certificate Register.

            Section 8.10 Merger or Consolidation.

            Any Person into which the Trustee may be merged or converted or with
which it may be consolidated, to which it may sell or transfer its corporate
trust business and assets as a whole or substantially as a whole or any Person
resulting from any merger, sale, transfer, conversion or consolidation to which
the Trustee shall be a party, or any Person succeeding to the business of such
entity, shall be the successor of the Trustee hereunder; provided, however, that
(i) such Person shall be eligible under the provisions of Section 8.07, 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 and (ii) the
Trustee and such successor or surviving Person shall notify the Depositor and
the Master Servicer of any such merger, conversion or consolidation at least two
Business Days prior to the effective date thereof and shall provide the
Depositor and the Master Servicer with all information required by the Depositor
to comply with its reporting obligations under Item 6.02 of Form 8-K not later
than the effective date of such merger, conversion or consolidation and the
Master Servicer shall report such event on Form 8-K within four business days of
the occurrence of such event.

            Section 8.11 Authenticating Agent.

            The Trustee may appoint an Authenticating Agent, which shall be
authorized to act on behalf of the Trustee in authenticating Certificates.
Wherever reference is made in this Agreement to the authentication of
Certificates by the Trustee or the Trustee's countersignature, such reference
shall be deemed to include authentication on behalf of the Trustee by the
Authenticating Agent and a certificate of authentication executed on behalf of
the Trustee by the Authenticating Agent. The Authenticating Agent must be
acceptable to the Depositor and the Master Servicer and must be a corporation
organized and doing business under the laws of the United States of America or
of any state, having a principal office and place of business in a state and
city acceptable to the Depositor and the Master Servicer, having a combined
capital and surplus of at least $15,000,000, authorized under such laws to do a
trust business and subject to supervision or examination by federal or state
authorities.

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

            The Authenticating Agent may at any time resign by giving at least
30 days' advance written notice of resignation to the Trustee, the Depositor and
the Master Servicer. Except with respect to Wells Fargo Bank, for so long as
Wells Fargo Bank is acting as the Master Servicer, the Trustee may at any time
terminate the agency of the Authenticating Agent by giving written notice
thereof to the Authenticating Agent, the Depositor and the Master Servicer. Upon
receiving a notice of resignation or upon such a termination, or in case at any
time the Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section 8.11, the Trustee promptly shall appoint a successor
Authenticating Agent, which shall be acceptable to the Master Servicer, and
shall give written notice of such appointment to the Depositor, and shall mail
notice of such appointment to all Certificateholders. Any successor
Authenticating Agent upon acceptance of its appointment hereunder shall become
vested with all the rights, powers, duties and responsibilities of its
predecessor hereunder, with like effect as if originally named as Authenticating
Agent herein. No successor Authenticating Agent shall be appointed unless
eligible under the provisions of this Section 8.11.

            The Authenticating Agent shall have no responsibility or liability
for any action taken by it as such at the direction of the Trustee. Any
reasonable compensation paid to the Authenticating Agent shall be payable by the
Master Servicer.

            Section 8.12 Separate Trustees and Co-Trustees.

            The Trustee shall have the power from time to time to appoint one or
more persons or corporations to act either as co-trustees jointly with the
Trustee, or as separate trustees, for the purpose of holding title to,
foreclosing or otherwise taking action with respect to any Mortgage Loan outside
the state where the Trustee has its principal place of business, where such
separate trustee or co-trustee is necessary or advisable (or the Trustee is
advised by the Master Servicer that such separate trustee or co-trustee is
necessary or advisable) under the laws of any state in which a Mortgaged
Property is located or for the purpose of otherwise conforming to any legal
requirement, restriction or condition in any state in which a Mortgaged Property
is located or in any state in which any portion of the Trust Estate is located.
The Master Servicer shall advise the Trustee when, in its good faith opinion, a
separate trustee or co-trustee is necessary or advisable as aforesaid. The
separate trustees or co-trustees so appointed shall be trustees for the benefit
of all of the Certificateholders and shall have such powers, rights and remedies
as shall be specified in the instrument of appointment; provided, however, that
no such appointment shall, or shall be deemed to, constitute the appointee an
agent of the Trustee. The Depositor and the Master Servicer shall join in any
such appointment, but such joining shall not be necessary for the effectiveness
of such appointment.

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

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

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

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

            (iv) the Trustee may at any time accept the resignation of or remove
      any separate trustee or co-trustee so appointed by it, if such resignation
      or removal does not violate the other terms of this Agreement.

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

            Any separate trustee, co-trustee, or custodian may, at any time,
constitute the Trustee, its agent or attorney-in-fact, with full power and
authority, to the extent not prohibited by law, to do any lawful act under or in
respect of this Agreement on its behalf and in its name. 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.

            No separate trustee or co-trustee hereunder shall be required to
meet the terms of eligibility as a successor trustee under Section 8.07
hereunder and no notice to Certificateholders of the appointment thereof shall
be required under Section 8.09 hereof.

            The Trustee agrees to instruct its co-trustees, if any, to the
extent necessary to fulfill such entity's obligations hereunder.

            The fees of any co-trustee whose appointment is necessary or
advisable for (i) conforming to any legal requirement, restriction or condition
in any state in which any Mortgaged Property or any portion of the Trust Estate
is located, will be paid by the Master Servicer, without reimbursement from the
Trust and (ii) any reason other than contemplated by clause (i), will be paid by
the Trustee, without reimbursement from the Trust. Expenses will be reimbursable
to the co-trustees to the extent, and in accordance with the standards,
specified in Section 8.06 hereof.

            Section 8.13 Tax Matters; Compliance with REMIC Provisions.

            (a) Each of the Trustee and the Master Servicer covenants and agrees
that it shall perform its duties hereunder in a manner consistent with the REMIC
Provisions and shall not knowingly take any action or fail to take any other
action that would (i) affect the determination of the Trust Estate's status as a
REMIC; or (ii) cause the imposition of any federal, state or local income,
prohibited transaction, contribution or other tax on either the REMIC or the
Trust Estate. The Master Servicer, or, in the case of any action required by law
to be performed directly by the Trustee, the Trustee, shall (i) prepare or cause
to be prepared, timely cause to be signed by the Trustee and file or cause to be
filed annual federal and applicable state and local income tax returns for the
REMIC using a calendar year as the taxable year and the accrual method of
accounting; (ii) in the first such federal tax return, make, or cause to be
made, an election satisfying the requirements of the REMIC Provisions, on behalf
of the Trust Estate, to treat the Trust Estate as a REMIC; (iii) prepare,
execute and forward, or cause to be prepared, executed and forwarded, to the
Certificateholders all information reports or tax returns required with respect
to the Trust Estate, as and when required to be provided to the
Certificateholders, and to the Internal Revenue Service and any other relevant
governmental taxing authority in accordance with the REMIC Provisions and any
other applicable federal, state or local laws, including without limitation
information reports relating to "original issue discount" and "market discount"
as defined in the Code based upon the issue prices, prepayment assumption and
cash flows provided by the Depositor to the Master Servicer and calculated on a
monthly basis by using the issue prices of the Certificates; (iv) make available
information necessary for the application of any tax imposed on transferors of
residual interests to "disqualified organizations" (as defined in the REMIC
Provisions); (v) file Form 8811 and apply for an Employee Identification Number
with a Form SS-4 or any other permissible method and respond to inquiries by
Certificateholders or their nominees concerning information returns, reports or
tax returns; (vi) maintain (or cause to be maintained by the Servicers) such
records relating to the REMIC, including but not limited to the income,
expenses, individual Mortgage Loans (including REO Mortgage Loans), other assets
and liabilities of the REMIC, and the fair market value and adjusted basis of
the property of the REMIC determined at such intervals as may be required by the
Code, as may be necessary to prepare the foregoing returns or information
reports; (vii) exercise reasonable care not to allow the creation of any
"interests" in the REMIC within the meaning of Code Section 860D(a)(2) other
than the interests represented by the Class A-1, Class B-1, Class B-2, Class
B-3, Class B-4, Class B-5 and Class B-6 Certificates and the Class A-R
Certificate; (viii) exercise reasonable care not to allow the occurrence of any
"prohibited transactions" within the meaning of Code Section 860F(a), unless the
Master Servicer shall have provided an Opinion of Counsel to the Trustee that
such occurrence would not (a) result in a taxable gain, (b) otherwise subject
either of the REMIC or the Trust Estate to tax or (c) cause the Trust Estate to
fail to qualify as a REMIC; (ix) exercise reasonable care not to allow the REMIC
to receive income from the performance of services or from assets not permitted
under the REMIC Provisions to be held by a REMIC; and (x) pay (on behalf of the
REMIC) the amount of any federal income tax, including, without limitation,
prohibited transaction taxes, taxes on net income from foreclosure property, and
taxes on certain contributions to a REMIC after the Startup Day, imposed on the
REMIC when and as the same shall be due and payable (but such obligation shall
not prevent the Master Servicer or any other appropriate Person from contesting
any such tax in appropriate proceedings and shall not prevent the Master
Servicer from withholding or depositing payment of such tax, if permitted by
law, pending the outcome of such proceedings). The Master Servicer shall be
entitled to be reimbursed pursuant to Section 3.02 for any taxes paid by it
pursuant to clause (x) of the preceding sentence, except to the extent that such
taxes are imposed as a result of the bad faith, willful misfeasance or gross
negligence of the Master Servicer in the performance of its obligations
hereunder.

            In order to enable the Master Servicer or the Trustee, as the case
may be, to perform its duties as set forth above, the Depositor shall provide,
or cause to be provided, to the Master Servicer within ten days after the
Closing Date all information or data that the Master Servicer determines to be
relevant for tax purposes to the valuations and offering prices of the
Certificates, including, without limitation, the price, yield, prepayment
assumption and projected cash flows of each Class of Certificates and the
Mortgage Loans in the aggregate. Thereafter, the Depositor shall provide to the
Master Servicer or the Trustee, as the case may be, promptly upon request
therefor, any such additional information or data that the Master Servicer or
the Trustee, as the case may be, may from time to time request in order to
enable the Master Servicer to perform its duties as set forth above. The
Depositor hereby indemnifies the Master Servicer or the Trustee, as the case may
be, for any losses, liabilities, damages, claims or expenses of the Master
Servicer or the Trustee arising from any errors or miscalculations by the Master
Servicer or the Trustee pursuant to this Section that result from any failure of
the Depositor to provide, or to cause to be provided, accurate information or
data to the Master Servicer or the Trustee, as the case may be, on a timely
basis. The Master Servicer hereby indemnifies the Depositor and the Trustee for
any losses, liabilities, damages, claims or expenses of the Depositor or the
Trustee arising from the Master Servicer's willful misfeasance, bad faith or
gross negligence in preparing any of the federal, state and local tax returns of
the REMIC as described above. In the event that the Trustee prepares any of the
federal, state and local tax returns of the REMIC as described above, the
Trustee hereby indemnifies the Depositor and the Master Servicer for any losses,
liabilities, damages, claims or expenses of the Depositor or the Master Servicer
arising from the Trustee's willful misfeasance, bad faith or negligence in
connection with such preparation.

            (b) Notwithstanding anything in this Agreement to the contrary, each
of the Master Servicer and the Trustee shall pay from its own funds, without any
right of reimbursement therefor, the amount of any costs, liabilities and
expenses incurred by the Trust Estate (including, without limitation, any and
all federal, state or local taxes, including taxes imposed on "prohibited
transactions" within the meaning of the REMIC Provisions) if and to the extent
that such costs, liabilities and expenses arise from a failure of the Master
Servicer or the Trustee, respectively, to perform its obligations under this
Section 8.13.

            The Holder of the Residual Certificate is hereby designated as the
"tax matters person" for the REMIC within the meaning of Treasury Regulations
Section 1.860F-4(d). The "tax matters person" shall have the same duties with
respect to the REMIC as those of a "tax matters partner" under Subchapter C of
Chapter 63 of Subtitle F of the Code. By its acceptance of the Residual
Certificate, such Holder irrevocably appoints the Master Servicer (and the
Master Servicer hereby agrees to act) as agent to perform all of the duties of
the "tax matters person."

            Section 8.14 Monthly Advances.

            In the event that Wells Fargo Bank in its capacity as Servicer fails
to make a Periodic Advance required to be made pursuant to the Wells Fargo Bank
Servicing Agreement on or before the Distribution Date, the Trustee shall make a
Periodic Advance as required by Section 3.03 hereof; provided, however, the
Trustee shall not be required to make such Periodic Advances if prohibited by
law or if it determines that such Periodic Advance would be a Nonrecoverable
Advance. With respect to those Periodic Advances which should have been made by
Wells Fargo Bank, the Trustee shall be entitled, pursuant to Section 3.02(a)(i),
(ii) or (v) hereof, to be reimbursed from the Certificate Account for Periodic
Advances and Nonrecoverable Advances made by it.

            Section 8.15 Indemnification of the Master Servicer and Depositor by
                         the Trustee

            The Trustee shall indemnify and hold harmless the Master Servicer
and the Depositor and any director, officer or agent thereof against any loss,
liability or expense, including reasonable attorney's fees, arising out of, in
connection with or incurred by reason of willful misfeasance, bad faith or
negligence in the performance of duties of the Trustee or by reason of reckless
disregard of its obligation to deliver any information, report, certification,
accountants' letter or other material required to comply with Regulation AB. Any
payment pursuant to this Section made by the Trustee to the Master Servicer or
the Depositor shall be from such entity's own funds, without reimbursement
therefor. The provisions of this Section 8.15 shall survive the termination of
this Agreement.

            Notwithstanding anything in this Agreement to the contrary, in no
event shall the Trustee be liable for any special, indirect or consequential
loss or damage of any kind whatsoever (including but not limited to lost
profits) resulting from the Trustee's nonperformance of its duties or
obligations to deliver any information, report, certification, accountants'
letter or other material required to comply with Regulation AB, even if the
Trustee has been advised of the likelihood of such loss or damage and regardless
of the form of action.

            Section 8.16 Trustee Errors and Omissions Policy.

            The Trustee shall maintain, at all times and at its own expense, a
Trustee Errors and Omissions Policy, which policy shall have such terms and
coverage amounts as are comparable to those of errors and omissions policies
maintained by trustees generally.

            The Trustee Errors and Omissions Policy shall insure the Trustee,
its successors and assigns, against any losses resulting from negligence, errors
or omissions on the part of officers, employees or other persons acting on
behalf of the Trustee in the performance of its duties as Trustee pursuant to
this Agreement.

            The Trustee shall maintain in effect the Trustee Errors and
Omissions Policy at all times and the Trustee Errors and Omissions Policy may
not be canceled, permitted to lapse or otherwise terminated without thirty
Business Days' prior written notice by registered mail to the Master Servicer
and the Depositor.

<PAGE>

                                   ARTICLE IX

                                   TERMINATION

            Section 9.01 Termination upon Purchase by the Depositor or
                         Liquidation of All Mortgage Loans.

            Subject to Section 9.02, the respective obligations and
responsibilities of the parties to this Agreement created hereby (other than the
obligation of the Paying Agent to make certain payments after the Final
Distribution Date to Certificateholders and the obligation of the Master
Servicer to send certain notices as hereinafter set forth and the tax reporting
obligations under Sections 4.05 and 8.13 hereof) shall terminate upon the last
action required to be taken by the Paying Agent on the Final Distribution Date
pursuant to this Article IX following the earlier of (i) the purchase by the
Depositor of all Mortgage Loans and all property acquired in respect of any
Mortgage Loan remaining in the Trust Estate at a price equal to the sum of (x)
100% of the unpaid principal balance of each Mortgage Loan (other than any REO
Mortgage Loan) as of the Final Distribution Date, (y) the fair market value of
the Mortgaged Property related to any REO Mortgage Loan, plus with respect to
clauses (x) and (y) any accrued and unpaid interest through the last day of the
month preceding the month of such purchase at the applicable Mortgage Interest
Rate and (z) any Reimbursement Amount owed to the Trust pursuant to Section 2.03
and (ii) the final payment or other liquidation (or any advance with respect
thereto) of the last Mortgage Loan remaining in the Trust Estate (including for
this purpose the discharge of any Mortgagor under a defaulted Mortgage Loan on
which a Servicer is not obligated to foreclose due to environmental impairment)
or the disposition of all property acquired upon foreclosure or deed in lieu of
foreclosure of any Mortgage Loan; 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 right of the Depositor to purchase all the assets of the Trust
Estate pursuant to clause (i) of the preceding paragraph is subject to Section
9.02 and conditioned upon (A) the Pool Scheduled Principal Balance of the
Mortgage Loans as of the Final Distribution Date being less than the amount set
forth in Section 11.20 and (B) the sum of clause (i)(x) and (y) of the preceding
paragraph being less than or equal to the aggregate fair market value of the
Mortgage Loans (other than any REO Mortgage Loans) and the Mortgaged Properties
related to the REO Mortgage Loans; provided, however, that this clause (B) shall
not apply to any purchase by the Depositor if, at the time of the purchase, the
Depositor is no longer subject to regulation by the Office of the Comptroller of
the Currency, the FDIC, the Federal Reserve or the Office of Thrift Supervision.
Fair market value for purposes of this paragraph and the preceding paragraph
will be determined by the Master Servicer as of the close of business on the
third Business Day next preceding the date upon which notice of any termination
is furnished to Certificateholders pursuant to the third paragraph of this
Section 9.01. In the case of any purchase by the Depositor pursuant to said
clause (i) of the preceding paragraph, the Depositor shall give the Trustee, the
Paying Agent and the Master Servicer notice of its intent to purchase the assets
of the Trust by the fifth day of the month of the Final Distribution Date or
such later date as shall be acceptable to the Trustee and Master Servicer. The
Depositor or Master Servicer shall in such case provide to the Trustee the
confirmation of deposit of the purchase price required by Section 3.04 and the
Trustee or the Custodian shall, promptly following payment of the purchase price
and upon receipt from the Master Servicer of a Request for Release, release to
the Depositor the Owner Mortgage Loan Files and Retained Mortgage Loan Files, if
applicable, pertaining to the Mortgage Loans being purchased.

            Notice of any termination, specifying the Final Distribution Date
(which shall be a date that would otherwise be a Distribution Date) upon which
the Certificateholders may surrender their Certificates to the Paying Agent for
payment of the final distribution and cancellation, shall be given promptly by
the Paying Agent by letter to Certificateholders and the Trustee mailed not
earlier than the 15th day of the month preceding the month of such final
distribution and not later than the twentieth day of the month of such final
distribution specifying (A) the Final Distribution Date upon which final payment
of the Certificates will be made upon presentation and surrender of Certificates
at the Corporate Trust Office of the Paying Agent therein designated, (B) the
amount of any such final payment and (C) that the Record Date otherwise
applicable to such Distribution Date is not applicable, payments being made
(except in the case of any Class A Certificate surrendered on a prior
Distribution Date) pursuant to Section 4.01 only upon presentation and surrender
of the Certificates at the Corporate Trust Office of the Paying Agent therein
specified. If the Depositor is exercising its right to purchase, the Depositor
shall deposit in the Certificate Account on or before the Final Distribution
Date in immediately available funds an amount equal to the purchase price for
the assets of the Trust Estate computed as above provided. Failure to give
notice of termination as described herein shall not entitle a Certificateholder
to any interest beyond the interest payable on the Final Distribution Date.

            Upon presentation and surrender of the Certificates, the Paying
Agent shall distribute to Certificateholders on the Final Distribution Date in
proportion to their respective Percentage Interests an amount equal to (i) as to
the Classes of Class A Certificates, the respective Principal Balance together
with any related Class A Unpaid Interest Shortfall and one month's interest in
an amount equal to the respective Interest Accrual Amount, (ii) as to the
Classes of Class B Certificates, the respective Principal Balance together with
any related Class B Unpaid Interest Shortfall and one month's interest in an
amount equal to the respective Interest Accrual Amount and (iii) as to the
Residual Certificate, the amounts, if any, which remain on deposit in the
Certificate Account (other than amounts retained to meet claims) after
application pursuant to clauses (i) and (ii) above and payment to the Master
Servicer of any amounts it is entitled as reimbursement or otherwise hereunder.
Notwithstanding the foregoing, if the price paid pursuant to clause (i) of the
first paragraph of this Section 9.01, after reimbursement to the Servicers, the
Master Servicer and the Trustee of any Periodic Advances, is insufficient to pay
in full the amounts set forth in clauses (i) and (ii) of this paragraph, then
any shortfall in the amount available for distribution to Certificateholders
shall be allocated in reduction of the amounts otherwise distributable on the
Final Distribution Date in the same manner as Realized Losses are allocated
pursuant to Sections 4.02(a) and (e) hereof. Such distribution on the Final
Distribution Date shall be in lieu of the distribution otherwise required to be
made on such Distribution Date in respect of each Class of Certificates.

            In the event that all of the Certificateholders shall not surrender
their Certificates for final payment and cancellation within three months
following the Final Distribution Date, the Paying Agent shall on such date cause
all funds, if any, in the Payment Account not distributed in final distribution
to Certificateholders to be withdrawn therefrom and credited to the remaining
Certificateholders by depositing such funds in a separate escrow account for the
benefit of such Certificateholders. The Paying Agent shall give a second written
notice to the remaining Certificateholders to surrender their Certificates for
cancellation and receive the final distribution with respect thereto. If within
three months after the second notice all the Certificates shall not have been
surrendered for cancellation, the Paying Agent may take appropriate steps, or
may appoint an agent to take appropriate steps, to contact the remaining
Certificateholders concerning surrender of their Certificates, and the cost
thereof shall be paid out of the funds on deposit in such escrow account.

            Section 9.02 Additional Termination Requirements.

            In the event of a termination of the Trust Estate upon the exercise
by the Depositor of its purchase option as provided in Section 9.01, the Trust
Estate shall be terminated in accordance with the following additional
requirements, unless the Trustee and the Master Servicer have received an
Opinion of Counsel to the effect that any other manner of termination (i) will
constitute a "qualified liquidation" of the Trust Estate within the meaning of
Code Section 860F(a)(4)(A) and (ii) will not subject the REMIC to federal tax or
cause the Trust Estate to fail to qualify as a REMIC at any time that any
Certificates are outstanding:

            (i) The notice given by the Paying Agent under Section 9.01 shall
      provide that such notice constitutes the adoption of a plan of complete
      liquidation of the REMIC as of the date of such notice (or, if earlier,
      the date on which the first such notice is mailed to Certificateholders).
      The Master Servicer shall also specify such date in a statement attached
      to the final tax return of the REMIC; and

            (ii) At or after the time of adoption of such a plan of complete
      liquidation and at or prior to the Final Distribution Date, the Trustee,
      shall sell all of the assets of the Trust Estate to the Depositor for cash
      at the purchase price specified in Section 9.01 and the Paying Agent shall
      distribute such cash within 90 days of such adoption in the manner
      specified in Section 9.01.

<PAGE>

                                    ARTICLE X

                            MISCELLANEOUS PROVISIONS

            Section 10.01 Amendment.

            (a) This Agreement or the Custodial Agreement may be amended from
time to time by the Depositor, the Master Servicer and the Trustee without the
consent of any of the Certificateholders, (i) to cure any ambiguity or mistake,
(ii) to correct or supplement any provisions herein or therein which may be
inconsistent with any other provisions herein or therein or in the related
Prospectus, (iii) to modify, eliminate or add to any of its provisions to such
extent as shall be necessary to maintain the qualification of the Trust Estate
as a REMIC at all times that any Certificates are outstanding or to avoid or
minimize the risk of the imposition of any federal tax on the Trust Estate or
the REMIC pursuant to the Code that would be a claim against the Trust Estate,
provided that (a) the Trustee has received an Opinion of Counsel to the effect
that such action is necessary or desirable to maintain such qualification or to
avoid or minimize the risk of the imposition of any such tax and (b) such action
shall not, as evidenced by such Opinion of Counsel, adversely affect in any
material respect the interests of any Certificateholder, (iv) to conform the
obligations of the parties under this Agreement, or to add obligations of the
parties to this Agreement, if necessary, to comply with the requirements of
Regulation AB, (v) to change the timing and/or nature of deposits into the
Certificate Account provided that such change shall not, as evidenced by an
Opinion of Counsel, adversely affect in any material respect the interests of
any Certificateholder, (vi) to modify, eliminate or add to the provisions of
Section 5.02 or any other provisions hereof restricting transfer of the
Certificates, provided that the Depositor for purposes of Section 5.02 has
determined in its sole discretion that any such modifications to this Agreement
will neither adversely affect the rating on the Certificates nor give rise to a
risk that the REMIC or any of the Certificateholders will be subject to a tax
caused by a transfer to a non-permitted transferee, (vii) prior to the initial
transfer of any Class of Class B Certificates by the Depositor or an affiliate
of the Depositor to a Person other than the Depositor or an affiliate of the
Depositor following the Closing Date, (a) to change the Denomination which
constitutes a Single Certificate for such Class, (b) to change such Class from
Definitive Certificates to Book-Entry Certificates or from Book-Entry
Certificates to Definitive Certificates and (c) to modify, eliminate or add to
the provisions of Section 5.02 restricting transfer of any Class of Class B
Certificates and (viii) to make any other provisions with respect to matters or
questions arising under this Agreement or such Custodial Agreement which shall
not be materially inconsistent with the provisions of this Agreement, provided
that such action shall not, as evidenced by an Opinion of Counsel, adversely
affect in any material respect the interests of any Certificateholder.
Notwithstanding the foregoing, any amendment pursuant to clause (v) or (viii)
shall not be deemed to adversely affect in any material respect the interest of
Certificateholders and no Opinion of Counsel to that effect shall be required if
the person requesting the amendment instead obtains a letter from each Rating
Agency stating that the amendment would not result in the downgrading or
withdrawal of the respective ratings then assigned to the Certificates.

            This Agreement or the Custodial Agreement may also be amended from
time to time by the Depositor, the Master Servicer and the Trustee with the
consent of the Holders of Certificates evidencing in the aggregate not less than
66-2/3% of the aggregate Voting Interests of each Class of Certificates affected
thereby, for the purpose of adding any provisions to or changing in any manner
or eliminating any of the provisions of this Agreement or such Custodial
Agreement or of modifying in any manner the rights of the Holders of
Certificates of such Class; 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 interest of the Holders of Certificates of any Class in a
manner other than as described in clause (i) hereof without the consent of
Holders of Certificates of such Class evidencing, as to such Class, Voting
Interests aggregating not less than 66-2/3% or (iii) reduce the aforesaid
percentage of Certificates of any Class the Holders of which are required to
consent to any such amendment, without the consent of the Holders of all
Certificates of such Class then outstanding.

            Notwithstanding any contrary provision of this Agreement, the
Trustee shall not consent to any amendment to this Agreement, other than an
amendment pursuant to clause (vii) of the second preceding paragraph, unless it
shall have first received an Opinion of Counsel to the effect that such
amendment will not subject the REMIC to tax or cause the Trust Estate to fail to
qualify as a REMIC at any time that any Certificates are outstanding.

            Promptly after the execution of any amendment requiring the consent
of Certificateholders, the Trustee shall furnish written notification of the
substance of such amendment to each Certificateholder.

            It shall not be necessary for the consent of Certificateholders
under this Section 10.01(a) 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 Trustee shall give prompt written notice to the Custodian of any
amendment or supplement to this Agreement and furnish the Custodian with written
copies thereof.

            (b) Notwithstanding any contrary provision of this Agreement, if any
of the Mortgage Loans are Type 2 Mortgage Loans, as indicated on the Mortgage
Loan Schedule, the Master Servicer may, from time to time, amend Schedule I
hereto without the consent of any Certificateholder or the Trustee; provided,
however, (i) that such amendment does not conflict with any provisions of the
related Servicing Agreement, (ii) that the related Servicing Agreement provides
for the remittance of each type of Unscheduled Principal Receipts received by
such Servicer during the Applicable Unscheduled Principal Receipt Period (as so
amended) related to each Distribution Date to the Master Servicer no later than
the 24th day of the month in which such Distribution Date occurs and (iii) that
such amendment is for the purpose of changing the Applicable Unscheduled
Principal Receipt Period for Type 2 Mortgage Loans to a Mid-Month Receipt Period
with respect to all Unscheduled Principal Receipts.

            Section 10.02 Recordation of Agreement.

            This Agreement (or an abstract hereof, if acceptable to the
applicable recording office) is subject to recordation in all appropriate public
offices for real property records in all the towns or other comparable
jurisdictions in which any or all of the Mortgaged Properties are situated, and
in any other appropriate public office or elsewhere, such recordation to be
effected by the Master Servicer and at its expense on direction by the Trustee,
but only upon direction 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 10.03 Limitation on Rights of Certificateholders.

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

            Except as otherwise expressly provided herein, no Certificateholder,
solely by virtue of its status as a Certificateholder, shall have any right to
vote or in any manner otherwise control the operation and management of the
Trust Estate, or the obligations of the parties hereto, nor shall anything
herein set forth, or contained in the terms of the Certificates, be construed so
as to constitute the Certificateholders from time to time as partners or members
of an association, nor shall any Certificateholder be under any liability to any
third person by reason of any action taken by the parties to this Agreement
pursuant to any provision hereof.

            No Certificateholder, solely by virtue of its status as
Certificateholder, shall have any right by virtue or by availing of any
provision of this Agreement to institute any suit, action or proceeding in
equity or at law upon or under or with respect to this Agreement, unless such
Holder previously shall have given to the Trustee a written notice of default
and of the continuance thereof, as hereinbefore provided, and unless the Holders
of Certificates evidencing not less than 25% of the Voting Interest represented
by all Certificates shall have made written request upon the Trustee to
institute such action, suit or proceeding in its own name as Trustee hereunder
and shall have offered to the Trustee such reasonable indemnity as it may
require against the cost, expenses and liabilities to be incurred therein or
thereby, and the Trustee, for 60 days after its receipt of such notice, request
and offer of indemnity, shall have neglected or refused to institute any such
action, suit or proceeding; it being understood and intended, and being
expressly covenanted by each Certificateholder with every other
Certificateholder and the Trustee, that no one or more Holders of Certificates
shall have any right in any manner whatever by virtue or by availing of any
provision of this Agreement to affect, disturb or prejudice the rights of the
Holders of any other of such Certificates, or to obtain or seek to obtain
priority over or preference to any other such Holder, or to enforce any right
under this Agreement, except in the manner herein provided and for the benefit
of all Certificateholders. For the protection and enforcement of the provisions
of this Section, each and every Certificateholder and the Trustee shall be
entitled to such relief as can be given either at law or in equity.

            Section 10.04 Governing Law; Jurisdiction.

            This Agreement shall be construed in accordance with the laws of the
State of New York (without regard to conflicts of laws principles), and the
obligations, rights and remedies of the parties hereunder shall be determined in
accordance with such laws.

            Section 10.05 Notices.

            Unless otherwise provided in this Agreement, all demands, notices
and communications hereunder shall be in writing and shall be deemed to have
been duly given if personally delivered at or mailed by certified or registered
mail, return receipt requested or by facsimile (i) in the case of the Depositor,
to Wells Fargo Asset Securities Corporation, 5325 Spectrum Drive, Frederick,
Maryland 21703, Attention: Vice President, Structured Finance or such other
address as may hereafter be furnished to the Master Servicer and the Trustee in
writing by the Depositor, (ii) in the case of the Master Servicer, to Wells
Fargo Bank, N.A., 9062 Old Annapolis Road, Columbia, Maryland 21045-1951,
Attention: Corporate Trust Services-WFMBS 2007-AR8; facsimile: (410) 715-2380 or
such other address as may hereafter be furnished to the Depositor and the
Trustee in writing by the Master Servicer and (iii) in the case of the Trustee
or the Paying Agent, to the Corporate Trust Office, or such other address as may
hereafter be furnished to the Depositor and the Master Servicer in writing by
the Trustee or the Paying Agent. Any notice required or permitted to be mailed
to a Certificateholder shall be given by first class mail, postage prepaid, at
the address of such Holder as shown in the Certificate Register. Any notice
mailed or transmitted within the time prescribed in this Agreement shall be
conclusively presumed to have been duly given, whether or not the addressee
receives such notice; provided, however, that any demand, notice or
communication to or upon the Depositor, the Master Servicer or the Trustee shall
not be effective until received.

            For all purposes of this Agreement, in the absence of actual
knowledge by an officer of the Master Servicer, the Master Servicer shall not be
deemed to have knowledge of any act or failure to act of any Servicer unless
notified thereof in writing by the Trustee, the applicable Servicer or a
Certificateholder.

            Section 10.06 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 10.07 Special Notices to Rating Agencies.

            (a) The Trustee shall give prompt notice to each Rating Agency of
the occurrence of any of the following events of which a Responsible Officer has
notice:

            (i) any amendment to this Agreement pursuant to Section 10.01(a);

            (ii) any assignment by the Master Servicer of its rights and
      delegation of its duties pursuant to Section 6.06;

            (iii) any resignation of the Master Servicer pursuant to Section
      6.04;

            (iv) the occurrence of any of the Events of Default described in
      Section 7.01;

            (v) any notice of termination given to the Master Servicer pursuant
      to Section 7.01; or

            (vi) the appointment of any successor to the Master Servicer
      pursuant to Section 7.05.

            (b) The Paying Agent shall give prompt notice to each Rating Agency
of any sale or transfer of the Class B Certificates pursuant to Section 5.02 to
an affiliate of the Depositor.

            (c) The Paying Agent shall give prompt notice to each Rating Agency
of the making of a final payment pursuant to Section 9.01.

            (d) The Master Servicer shall give prompt notice to each Rating
Agency of the occurrence of any of the following events:

            (i) the resignation of the Custodian or the appointment of a
      successor Custodian pursuant to the Custodial Agreement;

            (ii) the resignation or removal of the Trustee pursuant to Section
      8.08;

            (iii) the appointment of a successor trustee pursuant to Section
      8.09; or

            (iv) the sale, transfer or other disposition in a single transaction
      of 50% or more of the equity interests in the Master Servicer.

            (e) The Master Servicer shall deliver to each Rating Agency or
otherwise make available to each Rating Agency in a format acceptable to each
Rating Agency:

            (i) reports prepared pursuant to Section 3.05 and 3.11; and

            (ii) the Distribution Date Statements.

            (f) The Depositor shall give prompt notice to each Rating Agency of
any amendment to a Servicing Agreement that affects the ability of the Servicer
to modify a Mortgage Loan.

            Section 10.08 Covenant of Depositor.

            The Depositor shall not amend Article Third of its Certificate of
Incorporation without the prior written consent of each Rating Agency rating the
Certificates.

            Section 10.09 Recharacterization.

            The Parties intend the conveyance by the Depositor to the Trustee of
all of its right, title and interest in and to the Trust Estate pursuant to this
Agreement to constitute a purchase and sale and not a loan. Notwithstanding the
foregoing, to the extent that such conveyance is held not to constitute a sale
under applicable law, it is intended that this Agreement shall constitute a
security agreement under applicable law and that the Depositor shall be deemed
to have granted to the Trustee a first priority security interest in all of the
Depositor's right, title and interest in and to the Trust Estate. The Depositor
shall make the initial Uniform Commercial Code filings and take action as shall
be necessary to perfect such security interest. The Master Servicer shall take
all actions, including, without limitation, filing any Uniform Commercial Code
continuation statements, as shall be necessary to maintain the perfection of
such security interest.

            Section 10.10 Regulation AB Compliance; Intent of Parties;
                          Reasonableness.

            The parties hereto acknowledge that interpretations of the
requirements of Regulation AB may change over time, whether due to interpretive
guidance provided by the Commission or its staff, consensus among participants
in the asset-backed securities markets, advice of counsel, or otherwise, and
agree to comply with requests made by the Depositor or the Master Servicer in
good faith for delivery of information under these provisions on the basis of
evolving interpretations of Regulation AB. In connection with the Trust, the
parties hereto shall cooperate fully with the Master Servicer and the Depositor
to deliver to the Master Servicer and/or the Depositor, any and all statements,
reports, certifications, records and any other information available to such
party and reasonably necessary in the good faith determination of the Depositor
or the Master Servicer to permit the Depositor or the Master Servicer to comply
with the provisions of Regulation AB, together with such disclosures reasonably
believed by the Depositor or the Master Servicer to be necessary in order to
effect such compliance.

<PAGE>

                                   ARTICLE XI

                             TERMS FOR CERTIFICATES

            Section 11.01 Cut-Off Date.

            The Cut-Off Date for the Certificates is November 1, 2007.

            Section 11.02 Cut-Off Date Aggregate Principal Balance.

            The Cut-Off Date Aggregate Principal Balance is $435,434,104.41.

            Section 11.03 Original Class A Percentage.

            The Original Class A Percentage is 94.79990102%.

            Section 11.04 Original Principal Balances of the Classes of Class A
                          Certificates.

            As to the following Classes of Class A Certificates, the Principal
Balance of such Class as of the Cut-Off Date, as follows:

                                         Original
                           Class     Principal Balance
                           -----     -----------------

                         Class A-1     $412,791,000.00
                         Class A-R             $100.00

            Section 11.05 Original Subordinated Percentage.

            The Original Subordinated Percentage is 5.20009898%.

            Section 11.06 Original Class B Principal Balance.

            The Original Class B Principal Balance is $22,643,004.00.

            Section 11.07 Original Principal Balances of the Classes of Class B
                          Certificates.

            As to the following Classes of Class B Certificates, the Principal
Balance of such Class as of the Cut-Off Date, is as follows:

                                           Original
                           Class      Principal Balance
                           -----      -----------------

                         Class B-1      $10,450,000.00
                         Class B-2       $4,572,000.00
                         Class B-3       $1,742,000.00
                         Class B-4       $3,048,000.00
                         Class B-5         $653,000.00
                         Class B-6       $2,178,004.00

            Section 11.08 Original Class B-1 Fractional Interest.

            The Original Class B-1 Fractional Interest is 2.80019508%.

            Section 11.09 Original Class B-2 Fractional Interest.

            The Original Class B-2 Fractional Interest is 1.75020843%.

            Section 11.10 Original Class B-3 Fractional Interest.

            The Original Class B-3 Fractional Interest is 1.35014789%.

            Section 11.11 Original Class B-4 Fractional Interest.

            The Original Class B-4 Fractional Interest is 0.65015679%.

            Section 11.12 Original Class B-5 Fractional Interest.

            The Original Class B-5 Fractional Interest is 0.50019150%.

            Section 11.13 Original Class B-1 Percentage.

            The Original Class B-1 Percentage is 2.39990389%.

            Section 11.14 Original Class B-2 Percentage.

            The Original Class B-2 Percentage is 1.04998666%.

            Section 11.15 Original Class B-3 Percentage.

            The Original Class B-3 Percentage is 0.40006053%.

            Section 11.16 Original Class B-4 Percentage.

            The Original Class B-4 Percentage is 0.69999111%.

            Section 11.17 Original Class B-5 Percentage.

            The Original Class B-5 Percentage is 0.14996529%.

            Section 11.18 Original Class B-6 Percentage.

            The Original Class B-6 Percentage is 0.50019151%.

            Section 11.19 Closing Date.

            The Closing Date is November 29, 2007.

            Section 11.20 Right to Purchase.

            The right of the Depositor to purchase all of the Mortgage Loans
pursuant to Section 9.01 hereof shall be conditioned upon the Pool Scheduled
Principal Balance of the Mortgage Loans being less than $43,543,410.44 (10% of
the Cut-Off Date Aggregate Principal Balance) at the time of any such purchase.

            Section 11.21 Single Certificate.

            A Single Certificate for the Class A-1 Certificates represents a
$25,000 Denomination. A Single Certificate for the Class B-1, Class B-2 and
Class B-3 Certificates represents a $100,000 Denomination. A Single Certificate
for the Class B-4, Class B-5 and Class B-6 Certificates represents a $250,000
Denomination. A Single Certificate for the Residual Certificate represents a
$100 Denomination.

            Section 11.22 Servicing Fee Rate.

            The rate used to calculate the Servicing Fee is equal to such rate
as is set forth on the Mortgage Loan Schedule with respect to a Mortgage Loan.

            Section 11.23 Master Servicing Fee Rate.

            The rate used to calculate the Master Servicing Fee for each
Mortgage Loan shall be 0.010% per annum.

<PAGE>

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

                                       WELLS FARGO ASSET SECURITIES
                                          CORPORATION
                                            as Depositor

                                       By: /s/ Bradley A. Davis
                                          --------------------------------------
                                          Name:  Bradley A. Davis
                                          Title: Vice President

                                       WELLS FARGO BANK, N.A.
                                            as Master Servicer

                                       By: /s/ Christopher Furlow
                                          --------------------------------------
                                          Name:  Christopher Furlow
                                          Title: Assistant Vice President

                                       HSBC BANK USA, NATIONAL ASSOCIATION
                                          as Trustee

                                       By: /s/ Alexander Pabon
                                          --------------------------------------
                                          Name:  Alexander Pabon
                                          Title: Vice President

<PAGE>

STATE OF  MARYLAND      )
                           ss.:
COUNTY OF FREDERICK     )

            On this 29th day of November, 2007, before me, a notary public in
and for the State of Maryland, personally appeared Bradley A. Davis, known to me
who, being by me duly sworn, did depose and say that he resides at Cooksville,
Maryland; that he is a Vice President of Wells Fargo Asset Securities
Corporation, a Delaware corporation, one of the parties that executed the
foregoing instrument; and that he signed his name thereto by order of the Board
of Directors of said corporation.

------------------------
Notary Public

[NOTARIAL SEAL]

<PAGE>

STATE OF MARYLAND          )
                              ss.:
COUNTY OF HOWARD           )

            On this 29th day of November, 2007, before me, the undersigned
officer, personally appeared Christopher Furlow, and acknowledged to me to be an
Assistant Vice President of Wells Fargo Bank, National Association, and that as
such officer, being duly authorized to do so pursuant to such entity's by-laws
or a resolution of its board of directors, executed and acknowledged the
foregoing instrument for the purposes therein contained, by signing the name of
such entity by himself/herself as such officer as his/her free and voluntary act
and deed and the free and voluntary act and deed and the free and voluntary act
and deed of said entity.

            IN WITNESS WHEREOF, I hereunto set my hand and official seal.

------------------------
Notary Public

[NOTARIAL SEAL]

<PAGE>

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

            On this 29th day of November, 2007, before me, a notary public in
and for the State of New York, personally appeared Alexander Pabon, known to me
who, being by me duly sworn, did depose and say that he resides in
_________________________, New York; that he is a Vice President of HSBC Bank
USA, National Association, a national banking association, one of the parties
that executed the foregoing instrument; and that he signed his name thereto by
order of the Board of Directors of said association.

------------------------
Notary Public

[NOTARIAL SEAL]

<PAGE>

                                   SCHEDULE I

                    Wells Fargo Asset Securities Corporation,
               Mortgage Pass-Through Certificates, Series 2007-AR8
                 Applicable Unscheduled Principal Receipt Period

                                        Full Unscheduled     Partial Unscheduled
Servicer                               Principal Receipts     Principal Receipts
-----------------------------------    ------------------     ------------------

Wells Fargo Bank                           Mid-Month               Mid-Month

<PAGE>

                                   EXHIBIT A-1
                     [FORM OF FACE OF CLASS A-1 CERTIFICATE]

    [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.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 2007-AR8, CLASS A-1

                 evidencing an interest in a pool of adjustable
                           interest rate, monthly pay,
                      fully amortizing, first lien, one- to
                 four-family residential mortgage loans sold by

                    WELLS FARGO ASSET SECURITIES CORPORATION
               (Not an interest in or obligation of the Depositor)

               THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN
INTEREST IN, THE DEPOSITOR, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR
AFFILIATES, AND IS NOT INSURED OR GUARANTEED BY THE DEPOSITOR, THE MASTER
SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR
PRIVATE INSURER.

               DISTRIBUTIONS IN REDUCTION OF THE PRINCIPAL BALANCE OF THIS
CERTIFICATE WILL BE MADE IN THE MANNER DESCRIBED IN THE AGREEMENT. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT ANY TIME MAY BE LESS
THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                    Cut-Off Date:  November 1, 2007

CUSIP No.: 94985Y AA5              First Distribution Date: December 26, 2007

ISIN No.: US94985YAA55             Denomination:  $

Percentage Interest evidenced      Final Scheduled Maturity Date:  November 25,
by this Certificate: %             2037

<PAGE>

               THIS CERTIFIES THAT ___________________________ is the registered
owner of the Percentage Interest evidenced by this Certificate in monthly
distributions to the Holders of the Class A-1 Certificates with respect to a
Trust Estate consisting of a pool of adjustable interest rate, monthly pay,
fully amortizing, first lien, one- to four-family residential mortgage loans
(the "Mortgage Loans"), formed by Wells Fargo Asset Securities Corporation
(hereinafter called the "Depositor," which term includes any successor entity
under the Agreement referred to below). The Trust Estate was created pursuant to
a Pooling and Servicing Agreement dated as of November 29, 2007 (the
"Agreement") among the Depositor, Wells Fargo Bank, N.A., as master servicer
(the "Master Servicer"), and HSBC Bank USA, National Association, as trustee
(the "Trustee"), a summary of certain of the pertinent provisions of which is
set forth hereinafter. To the extent not defined herein, the capitalized terms
used herein have the meanings ascribed to such terms in the Agreement. This
Certificate is issued under and is subject to the terms, provisions and
conditions of the Agreement, to which Agreement the Holder of this Certificate
by virtue of the acceptance hereof assents and by which such Holder is bound.

               Pursuant to the terms of the Agreement, a distribution will be
made on the 25th day of each month or, if such 25th day is not a Business Day,
the Business Day immediately following (the "Distribution Date"), commencing on
the first Distribution Date specified above, to the Person in whose name this
Certificate is registered at the close of business on the Record Date, in an
amount equal to the product of the Percentage Interest evidenced by this
Certificate and the Class A Distribution Amount for the Class A-1 Certificates
required to be distributed to Holders of the Class A-1 Certificates on such
Distribution Date, subject to adjustment in certain events as specified in the
Agreement. Distributions in reduction of the Principal Balance of certain
Classes of Class A Certificates may not commence on the first Distribution Date
specified above. Distributions of principal will be allocated among the Classes
of Class A Certificates in accordance with the provisions of the Agreement. The
pass-through rate on the Class A-1 Certificates applicable to each Distribution
Date will be a per annum rate equal to the Net WAC. The amount of interest which
accrues on this Certificate in any month will be subject to reduction with
respect to any Non-Supported Interest Shortfall, any Relief Act Shortfall and
the interest portion of certain Realized Losses allocated to the Class A-1
Certificates, as described in the Agreement.

               Distributions on this Certificate will be made by the Paying
Agent by check mailed to the address of the Person entitled thereto, as such
name and address shall appear on the Certificate Register, unless such Person
has notified the Paying Agent pursuant to the Agreement that such payments are
to be made by wire transfer of immediately available funds. Notwithstanding the
above, the final distribution in reduction of the Principal Balance of this
Certificate will be made after due notice of the pendency of such distribution
and only upon presentation and surrender of this Certificate at the office or
agency of the Paying Agent specified for that purpose in the notice of final
distribution.

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

               This Certificate constitutes a "regular interest" in a "real
estate mortgage investment conduit" as those terms are defined in Section
860G(a)(1) and Section 860D, respectively, of the Internal Revenue Code of 1986,
as amended.

               Unless this Certificate has been countersigned by an authorized
officer of the Authenticating Agent, 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 Paying Agent has caused this Certificate
to be duly executed as of the date set forth below.

Dated:

                                               Wells Fargo Bank, N.A.,
                                                     Paying Agent

                                               By____________________________
                                                     Authorized Officer

Countersigned:

Wells Fargo Bank, N.A.,
  Authenticating Agent

By ________________________
   Authorized Officer

<PAGE>

                                   EXHIBIT A-R
                     [FORM OF FACE OF CLASS A-R CERTIFICATE]

FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE REPRESENTS THE "RESIDUAL
INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT" AS THOSE TERMS ARE
DEFINED, RESPECTIVELY, IN SECTIONS 860G(a)(2) AND 860D OF THE INTERNAL REVENUE
CODE OF 1986, AS AMENDED (THE "CODE"). A TRANSFEREE OF THIS CERTIFICATE, BY
ACCEPTANCE HEREOF, IS DEEMED TO HAVE ACCEPTED THIS CERTIFICATE SUBJECT TO
CERTAIN RESTRICTIONS ON TRANSFERABILITY, AS SET FORTH IN SECTION 5.02(d) OF THE
AGREEMENT, AND SHALL BE REQUIRED TO FURNISH AN AFFIDAVIT TO THE TRANSFEROR AND
THE MASTER SERVICER TO THE EFFECT THAT, AMONG OTHER THINGS, IT IS NOT A
DISQUALIFIED ORGANIZATION, AS SUCH TERM IS DEFINED IN CODE SECTION 860E(e)(5),
AN AGENT (INCLUDING A BROKER, NOMINEE OR OTHER MIDDLEMAN) FOR A DISQUALIFIED
ORGANIZATION OR A NON-PERMITTED FOREIGN HOLDER, AS DEFINED IN SECTION 5.02(d) OF
THE AGREEMENT AND TO HAVE AGREED TO SUCH AMENDMENTS TO THE AGREEMENT AS MAY BE
REQUIRED TO FURTHER EFFECTUATE THE RESTRICTIONS ON TRANSFERS TO DISQUALIFIED
ORGANIZATIONS, AGENTS THEREOF OR NON-PERMITTED FOREIGN HOLDERS.

THE HOLDER OF THIS CLASS A-R CERTIFICATE, BY ACCEPTANCE HEREOF, IS DEEMED TO
HAVE AGREED TO THE DESIGNATION OF THE MASTER SERVICER AS ITS AGENT TO ACT AS
"TAX MATTERS PERSON" OF THE REMIC TO PERFORM THE FUNCTIONS OF A "TAX MATTERS
PARTNER" FOR PURPOSES OF SUBCHAPTER C OF CHAPTER 63 OF SUBTITLE F OF THE CODE,
OR, IF SO REQUESTED BY THE MASTER SERVICER, TO ACT AS TAX MATTERS PERSON OF THE
REMIC.

THIS CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO ANY PERSON WHICH IS
AN EMPLOYEE BENEFIT PLAN OR OTHER RETIREMENT ARRANGEMENT SUBJECT TO TITLE I OF
THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR
SECTION 4975 OF THE CODE OR A GOVERNMENTAL PLAN, AS DEFINED IN SECTION 3(32) OF
ERISA SUBJECT TO ANY FEDERAL, STATE OR LOCAL LAW WHICH IS, TO A MATERIAL EXTENT,
SIMILAR TO THE FOREGOING PROVISIONS OF ERISA OR THE CODE (COLLECTIVELY, A
"PLAN"), OR ANY PERSON ACTING ON BEHALF OF OR INVESTING THE ASSETS OF A PLAN.

<PAGE>

                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 2007-AR8, CLASS A-R

                 evidencing an interest in a pool of adjustable
                           interest rate, monthly pay,
                      fully amortizing, first lien, one- to
                 four-family residential mortgage loans sold by

                    WELLS FARGO ASSET SECURITIES CORPORATION
               (Not an interest in or obligation of the Depositor)

               THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN
INTEREST IN, THE DEPOSITOR, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR
AFFILIATES, AND IS NOT INSURED OR GUARANTEED BY THE DEPOSITOR, THE MASTER
SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR
PRIVATE INSURER.

               DISTRIBUTIONS IN REDUCTION OF THE PRINCIPAL BALANCE OF THIS
CERTIFICATE WILL BE MADE IN THE MANNER DESCRIBED IN THE AGREEMENT. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT ANY TIME MAY BE LESS
THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                    Cut-Off Date:  November 1, 2007

CUSIP No.: 94985Y AB3              First Distribution Date: December 26, 2007

ISIN No.: US94985YAB39             Denomination:  $

Percentage Interest evidenced      Final Scheduled Maturity Date:  November 25,
by this Certificate: %             2037

<PAGE>

               THIS CERTIFIES THAT __________________________ is the registered
owner of the Percentage Interest evidenced by this Certificate in monthly
distributions to the Holder of the Class A-R Certificate with respect to a Trust
Estate consisting of a pool of adjustable interest rate, monthly pay, fully
amortizing, first lien, one- to four-family residential mortgage loans (the
"Mortgage Loans"), formed by Wells Fargo Asset Securities Corporation
(hereinafter called the "Depositor," which term includes any successor entity
under the Agreement referred to below). The Trust Estate was created pursuant to
a Pooling and Servicing Agreement dated as of November 29, 2007 (the
"Agreement") among the Depositor, Wells Fargo Bank, N.A., as master servicer
(the "Master Servicer"), and HSBC Bank USA, National Association, as trustee
(the "Trustee"), a summary of certain of the pertinent provisions of which is
set forth hereinafter. To the extent not defined herein, the capitalized terms
used herein have the meanings ascribed to such terms in the Agreement. This
Certificate is issued under and is subject to the terms, provisions and
conditions of the Agreement, to which Agreement the Holder of this Certificate
by virtue of the acceptance hereof assents and by which such Holder is bound.

               Pursuant to the terms of the Agreement, a distribution will be
made on the 25th day of each month or, if such 25th day is not a Business Day,
the Business Day immediately following (the "Distribution Date"), commencing on
the first Distribution Date specified above, to the Person in whose name this
Certificate is registered at the close of business on the Record Date, in an
amount equal to the product of the Percentage Interest evidenced by this
Certificate and the Class A Distribution Amount for the Class A-R Certificate
required to be distributed to the Holder of the Class A-R Certificate on such
Distribution Date, subject to adjustment in certain events as specified in the
Agreement. Distributions in reduction of the Principal Balance of certain
Classes of Class A Certificates may not commence on the first Distribution Date
specified above. Distributions of principal will be allocated among the Classes
of Class A Certificates in accordance with the provisions of the Agreement. The
pass-through rate on the Class A-R Certificate applicable to each Distribution
Date will be a per annum rate equal to the Net WAC. The amount of interest which
accrues on this Certificate in any month will be subject to reduction with
respect to any Non-Supported Interest Shortfall, any Relief Act Shortfall and
the interest portion of certain Realized Losses allocated to the Class A-R
Certificate, as described in the Agreement.

               Distributions on this Certificate will be made by the Paying
Agent by check mailed to the address of the Person entitled thereto, as such
name and address shall appear on the Certificate Register, unless such Person
has notified the Paying Agent pursuant to the Agreement that such payments are
to be made by wire transfer of immediately available funds. Notwithstanding the
above, the final distribution on this Certificate will be made after due notice
of the pendency of such distribution and only upon presentation and surrender of
this Certificate at the office or agency of the Paying Agent specified for that
purpose in the notice of final distribution.

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

               Unless this Certificate has been countersigned by an authorized
officer of the Authenticating Agent, 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 Paying Agent has caused this Certificate
to be duly executed as of the date set forth below.

Dated:

                                               Wells Fargo Bank, N.A.,
                                                     Paying Agent

                                               By____________________________
                                                     Authorized Officer

Countersigned:

Wells Fargo Bank, N.A.,
  Authenticating Agent

By ________________________
   Authorized Officer

<PAGE>

                                   EXHIBIT B-1
                     [FORM OF FACE OF CLASS B-1 CERTIFICATE]

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A CERTIFICATES
AS DESCRIBED IN THE AGREEMENT REFERRED TO HEREIN.

[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.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 2007-AR8, CLASS B-1

   evidencing an interest in a pool of adjustable interest rate, monthly pay,
          fully amortizing, first lien, one- to four-family residential
                             mortgage loans sold by

                    WELLS FARGO ASSET SECURITIES CORPORATION
               (Not an interest in or obligation of the Depositor)

               THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN
INTEREST IN, THE DEPOSITOR, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR
AFFILIATES, AND IS NOT INSURED OR GUARANTEED BY THE DEPOSITOR, THE MASTER
SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR
PRIVATE INSURER.

               DISTRIBUTIONS IN REDUCTION OF THE PRINCIPAL BALANCE OF THIS
CERTIFICATE WILL BE MADE IN THE MANNER DESCRIBED IN THE AGREEMENT. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT ANY TIME MAY BE LESS
THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                    Cut-Off Date:  November 1, 2007

CUSIP No.: 94985Y AC1              First Distribution Date: December 26, 2007

ISIN No.: US94985YAC12             Denomination:  $

Percentage Interest evidenced      Final Scheduled Maturity Date:  November 25,
by this Certificate: %             2037

<PAGE>

               THIS CERTIFIES THAT ____________________________ is the
registered owner of the Percentage Interest evidenced by this Certificate in
monthly distributions to the Holders of the Class B-1 Certificates with respect
to a Trust Estate consisting of a pool of adjustable interest rate, monthly pay,
fully amortizing, first lien, one- to four-family residential mortgage loans
(the "Mortgage Loans") formed by Wells Fargo Asset Securities Corporation
(hereinafter called the "Depositor," which term includes any successor entity
under the Agreement referred to below). The Trust Estate was created pursuant to
a Pooling and Servicing Agreement dated as of November 29, 2007 (the
"Agreement") among the Depositor, Wells Fargo Bank, N.A., as master servicer
(the "Master Servicer"), and HSBC Bank USA, National Association, as trustee
(the "Trustee"), a summary of certain of the pertinent provisions of which is
set forth hereinafter. To the extent not defined herein, the capitalized terms
used herein have the meanings ascribed to such terms in the Agreement. This
Certificate is issued under and is subject to the terms, provisions and
conditions of the Agreement, to which Agreement the Holder of this Certificate
by virtue of the acceptance hereof assents and by which such Holder is bound.

               Pursuant to the terms of the Agreement, a distribution will be
made on the 25th day of each month or, if such 25th day is not a Business Day,
the Business Day immediately following (the "Distribution Date"), commencing on
the first Distribution Date specified above, to the Person in whose name this
Certificate is registered at the close of business on the Record Date, in an
amount equal to the product of the Percentage Interest evidenced by this
Certificate and, subject to the prior rights of the Class A Certificates as
specified in the Agreement, any Class B-1 Distribution Amount required to be
distributed to Holders of the Class B-1 Certificates on such Distribution Date,
subject to adjustment, in certain events, as specified in the Agreement. The
pass-through rate on the Class B-1 Certificates applicable to each Distribution
Date will be a per annum rate equal to the Net WAC. The amount of interest which
accrues on this Certificate in any month will be subject to reduction with
respect to any Non-Supported Interest Shortfall and any Relief Act Shortfall
allocated to the Class B-1 Certificates, as described in the Agreement.

               Distributions on this Certificate will be made by the Paying
Agent by check mailed to the address of the Person entitled thereto, as such
name and address shall appear on the Certificate Register, unless such Person
has notified the Paying Agent pursuant to the Agreement that such payments are
to be made by wire transfer of immediately available funds. Notwithstanding the
above, the final distribution in reduction of the Principal Balance of this
Certificate will be made after due notice of the pendency of such distribution
and only upon presentation and surrender of this Certificate at the office or
agency of the Paying Agent specified for that purpose in the notice of final
distribution.

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

               This Certificate constitutes a "regular interest" in a "real
estate mortgage investment conduit" as those terms are defined in Section
860G(a)(1) and Section 860D, respectively, of the Internal Revenue Code of 1986,
as amended.

               Unless this Certificate has been countersigned by an authorized
officer of the Authenticating Agent, 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 Paying Agent has caused this Certificate
to be duly executed as of the date set forth below.

Dated:

                                               Wells Fargo Bank, N.A.,
                                                     Paying Agent

                                               By____________________________
                                                     Authorized Officer

Countersigned:

Wells Fargo Bank, N.A.,
  Authenticating Agent

By ________________________
   Authorized Officer

<PAGE>

                                   EXHIBIT B-2
                     [FORM OF FACE OF CLASS B-2 CERTIFICATE]

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A CERTIFICATES
AND THE CLASS B-1 CERTIFICATES AS DESCRIBED IN THE AGREEMENT REFERRED TO HEREIN.

[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.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 2007-AR8, CLASS B-2

          evidencing an interest in a pool of adjustable interest rate,
         monthly pay, fully amortizing, first lien, one- to four-family
                       residential mortgage loans sold by

                    WELLS FARGO ASSET SECURITIES CORPORATION
               (Not an interest in or obligation of the Depositor)

               THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN
INTEREST IN, THE DEPOSITOR, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR
AFFILIATES, AND IS NOT INSURED OR GUARANTEED BY THE DEPOSITOR, THE MASTER
SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR
PRIVATE INSURER.

               DISTRIBUTIONS IN REDUCTION OF THE PRINCIPAL BALANCE OF THIS
CERTIFICATE WILL BE MADE IN THE MANNER DESCRIBED IN THE AGREEMENT. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT ANY TIME MAY BE LESS
THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                    Cut-Off Date:  November 1, 2007

CUSIP No.: 94985Y AD9              First Distribution Date: December 26, 2007

ISIN No.: US94985YAD94             Denomination:  $

Percentage Interest evidenced      Final Scheduled Maturity Date:  November 25,
by this Certificate: %             2037

<PAGE>

               THIS CERTIFIES THAT ____________________________ is the
registered owner of the Percentage Interest evidenced by this Certificate in
monthly distributions to the Holders of the Class B-2 Certificates with respect
to a Trust Estate consisting of a pool of adjustable interest rate, monthly pay,
fully amortizing, first lien, one- to four-family residential mortgage loans
(the "Mortgage Loans") formed by Wells Fargo Asset Securities Corporation
(hereinafter called the "Depositor," which term includes any successor entity
under the Agreement referred to below). The Trust Estate was created pursuant to
a Pooling and Servicing Agreement dated as of November 29, 2007 (the
"Agreement") among the Depositor, Wells Fargo Bank, N.A., as master servicer
(the "Master Servicer"), and HSBC Bank USA, National Association, as trustee
(the "Trustee"), a summary of certain of the pertinent provisions of which is
set forth hereinafter. To the extent not defined herein, the capitalized terms
used herein have the meanings ascribed to such terms in the Agreement. This
Certificate is issued under and is subject to the terms, provisions and
conditions of the Agreement, to which Agreement the Holder of this Certificate
by virtue of the acceptance hereof assents and by which such Holder is bound.

               Pursuant to the terms of the Agreement, a distribution will be
made on the 25th day of each month or, if such 25th day is not a Business Day,
the Business Day immediately following (the "Distribution Date"), commencing on
the first Distribution Date specified above, to the Person in whose name this
Certificate is registered at the close of business on the Record Date, in an
amount equal to the product of the Percentage Interest evidenced by this
Certificate and, subject to the prior rights of the Class A Certificates and
each Class of Class B Certificates bearing a lower numerical designation as
specified in the Agreement, any Class B-2 Distribution Amount required to be
distributed to Holders of the Class B-2 Certificates on such Distribution Date,
subject to adjustment, in certain events, as specified in the Agreement. The
pass-through rate on the Class B-2 Certificates applicable to each Distribution
Date will be a per annum rate equal to the Net WAC. The amount of interest which
accrues on this Certificate in any month will be subject to reduction with
respect to any Non-Supported Interest Shortfall and any Relief Act Shortfall
allocated to the Class B-2 Certificates, as described in the Agreement.

               Distributions on this Certificate will be made by the Paying
Agent by check mailed to the address of the Person entitled thereto, as such
name and address shall appear on the Certificate Register, unless such Person
has notified the Paying Agent pursuant to the Agreement that such payments are
to be made by wire transfer of immediately available funds. Notwithstanding the
above, the final distribution in reduction of the Principal Balance of this
Certificate will be made after due notice of the pendency of such distribution
and only upon presentation and surrender of this Certificate at the office or
agency of the Paying Agent specified for that purpose in the notice of final
distribution.

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

               This Certificate constitutes a "regular interest" in a "real
estate mortgage investment conduit" as those terms are defined in Section
860G(a)(1) and Section 860D, respectively, of the Internal Revenue Code of 1986,
as amended.

               Unless this Certificate has been countersigned by an authorized
officer of the Authenticating Agent, 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 Paying Agent has caused this Certificate
to be duly executed as of the date set forth below.

Dated:

                                               Wells Fargo Bank, N.A.,
                                                     Paying Agent

                                               By____________________________
                                                     Authorized Officer

Countersigned:

Wells Fargo Bank, N.A.,
  Authenticating Agent

By ________________________
   Authorized Officer

<PAGE>

                                   EXHIBIT B-3

                     [FORM OF FACE OF CLASS B-3 CERTIFICATE]

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A
CERTIFICATES, THE CLASS B-1 CERTIFICATES AND THE CLASS B-2 CERTIFICATES AS
DESCRIBED IN THE AGREEMENT REFERRED TO HEREIN.

[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.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 2007-AR8, CLASS B-3

          evidencing an interest in a pool of adjustable interest rate,
         monthly pay, fully amortizing, first lien, one- to four-family
                       residential mortgage loans sold by

                    WELLS FARGO ASSET SECURITIES CORPORATION
               (Not an interest in or obligation of the Depositor)

               THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN
INTEREST IN, THE DEPOSITOR, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR
AFFILIATES, AND IS NOT INSURED OR GUARANTEED BY THE DEPOSITOR, THE MASTER
SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR
PRIVATE INSURER.

               DISTRIBUTIONS IN REDUCTION OF THE PRINCIPAL BALANCE OF THIS
CERTIFICATE WILL BE MADE IN THE MANNER DESCRIBED IN THE AGREEMENT. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT ANY TIME MAY BE LESS
THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                    Cut-Off Date:  November 1, 2007

CUSIP No.: 94985Y AE7              First Distribution Date: December 26, 2007

ISIN No.: US94985YAE77             Denomination:  $

Percentage Interest evidenced      Final Scheduled Maturity Date:  November 25,
by this Certificate: %             2037

<PAGE>

               THIS CERTIFIES THAT _______________________________ is the
registered owner of the Percentage Interest evidenced by this Certificate in
monthly distributions to the Holders of the Class B-3 Certificates with respect
to a Trust Estate consisting of a pool of adjustable interest rate, monthly pay,
fully amortizing, first lien, one- to four-family residential mortgage loans
(the "Mortgage Loans") formed by Wells Fargo Asset Securities Corporation
(hereinafter called the "Depositor," which term includes any successor entity
under the Agreement referred to below). The Trust Estate was created pursuant to
a Pooling and Servicing Agreement dated as of November 29, 2007 (the
"Agreement") among the Depositor, Wells Fargo Bank, N.A., as master servicer
(the "Master Servicer"), and HSBC Bank USA, National Association, as trustee
(the "Trustee"), a summary of certain of the pertinent provisions of which is
set forth hereinafter. To the extent not defined herein, the capitalized terms
used herein have the meanings ascribed to such terms in the Agreement. This
Certificate is issued under and is subject to the terms, provisions and
conditions of the Agreement, to which Agreement the Holder of this Certificate
by virtue of the acceptance hereof assents and by which such Holder is bound.

               Pursuant to the terms of the Agreement, a distribution will be
made on the 25th day of each month or, if such 25th day is not a Business Day,
the Business Day immediately following (the "Distribution Date"), commencing on
the first Distribution Date specified above, to the Person in whose name this
Certificate is registered at the close of business on the Record Date, in an
amount equal to the product of the Percentage Interest evidenced by this
Certificate and, subject to the prior rights of the Class A Certificates and
each Class of Class B Certificates bearing a lower numerical designation as
specified in the Agreement, any Class B-3 Distribution Amount required to be
distributed to Holders of the Class B-3 Certificates on such Distribution Date,
subject to adjustment, in certain events, as specified in the Agreement. The
pass-through rate on the Class B-3 Certificates applicable to each Distribution
Date will be a per annum rate equal to the Net WAC. The amount of interest which
accrues on this Certificate in any month will be subject to reduction with
respect to any Non-Supported Interest Shortfall and any Relief Act Shortfall
allocated to the Class B-3 Certificates, as described in the Agreement.

               Distributions on this Certificate will be made by the Paying
Agent by check mailed to the address of the Person entitled thereto, as such
name and address shall appear on the Certificate Register, unless such Person
has notified the Paying Agent pursuant to the Agreement that such payments are
to be made by wire transfer of immediately available funds. Notwithstanding the
above, the final distribution in reduction of the Principal Balance of this
Certificate will be made after due notice of the pendency of such distribution
and only upon presentation and surrender of this Certificate at the office or
agency of the Paying Agent specified for that purpose in the notice of final
distribution.

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

               This Certificate constitutes a "regular interest" in a "real
estate mortgage investment conduit" as those terms are defined in Section
860G(a)(1) and Section 860D, respectively, of the Internal Revenue Code of 1986,
as amended.

               Unless this Certificate has been countersigned by an authorized
officer of the Authenticating Agent, 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 Paying Agent has caused this Certificate
to be duly executed as of the date set forth below.

Dated:

                                               Wells Fargo Bank, N.A.,
                                                     Paying Agent

                                               By____________________________
                                                     Authorized Officer

Countersigned:

Wells Fargo Bank, N.A.,
  Authenticating Agent

By ________________________
   Authorized Officer

<PAGE>

                                   EXHIBIT B-4
                     [FORM OF FACE OF CLASS B-4 CERTIFICATE]

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A
CERTIFICATES, THE CLASS B-1 CERTIFICATES, THE CLASS B-2 CERTIFICATES AND THE
CLASS B-3 CERTIFICATES AS DESCRIBED IN THE AGREEMENT REFERRED TO HEREIN.

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

THE INITIAL PURCHASER IN THIS CERTIFICATE, AND EACH SUBSEQUENT PURCHASER OF THIS
CERTIFICATE, BY PURCHASING THIS CERTIFICATE OR AN INTEREST HEREIN, IS DEEMED TO
HAVE AGREED TO COMPLY WITH CERTAIN TRANSFER REQUIREMENTS SET FORTH IN THE
POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN.

EXCEPT AS PROVIDED IN SECTION 5.02(C) OF THE AGREEMENT REFERRED TO HEREIN, THIS
CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO ANY PERSON THAT HAS NOT
DELIVERED A REPRESENTATION LETTER STATING EITHER (A) THAT THE TRANSFEREE IS NOT
AN EMPLOYEE BENEFIT PLAN OR OTHER RETIREMENT ARRANGEMENT SUBJECT TO TITLE I OF
THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR
SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"), OR A
GOVERNMENTAL PLAN, AS DEFINED IN SECTION 3(32) OF ERISA, SUBJECT TO ANY FEDERAL,
STATE OR LOCAL LAW WHICH IS, TO A MATERIAL EXTENT, SIMILAR TO THE FOREGOING
PROVISIONS OF ERISA OR THE CODE (COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON
BEHALF OF OR INVESTING THE ASSETS OF A PLAN OR (B) SUBJECT TO CERTAIN CONDITIONS
SET FORTH IN THE AGREEMENT, THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS
CERTIFICATE IS AN "INSURANCE COMPANY GENERAL ACCOUNT." EACH PERSON WHO ACQUIRES
THIS CERTIFICATE OR ANY INTEREST THEREIN SHALL BE DEEMED TO HAVE MADE THE
REPRESENTATIONS REQUIRED BY THE REPRESENTATION LETTER REFERRED TO IN THE
PRECEDING SENTENCE, UNLESS SUCH PERSON SHALL HAVE PROVIDED SUCH REPRESENTATION
LETTER OR THE OPINION OF COUNSEL REFERRED TO IN SECTION 5.02(C) OF THE AGREEMENT
REFERRED TO HEREIN TO THE MASTER SERVICER AND DEPOSITOR.

<PAGE>

                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 2007-AR8, CLASS B-4

          evidencing an interest in a pool of adjustable interest rate,
         monthly pay, fully amortizing, first lien, one- to four-family
                       residential mortgage loans sold by

                    WELLS FARGO ASSET SECURITIES CORPORATION
               (Not an interest in or obligation of the Depositor)

               THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN
INTEREST IN, THE DEPOSITOR, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR
AFFILIATES, AND IS NOT INSURED OR GUARANTEED BY THE DEPOSITOR, THE MASTER
SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR
PRIVATE INSURER.

               DISTRIBUTIONS IN REDUCTION OF THE PRINCIPAL BALANCE OF THIS
CERTIFICATE WILL BE MADE IN THE MANNER DESCRIBED IN THE AGREEMENT. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT ANY TIME MAY BE LESS
THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                    Cut-Off Date:  November 1, 2007

CUSIP No.: 94985Y AF4              First Distribution Date: December 26, 2007

ISIN No.: US94985YAF43             Denomination:  $

Percentage Interest evidenced      Final Scheduled Maturity Date:  November 25,
by this Certificate: %             2037

<PAGE>

               THIS CERTIFIES THAT ____________________________ is the
registered owner of the Percentage Interest evidenced by this Certificate in
monthly distributions to the Holders of the Class B-4 Certificates with respect
to a Trust Estate consisting of a pool of adjustable interest rate, monthly pay,
fully amortizing, first lien, one- to four-family residential mortgage loans
(the "Mortgage Loans") formed by Wells Fargo Asset Securities Corporation
(hereinafter called the "Depositor," which term includes any successor entity
under the Agreement referred to below). The Trust Estate was created pursuant to
a Pooling and Servicing Agreement dated as of November 29, 2007 (the
"Agreement") among the Depositor, Wells Fargo Bank, N.A., as master servicer
(the "Master Servicer"), and HSBC Bank USA, National Association, as trustee
(the "Trustee"), a summary of certain of the pertinent provisions of which is
set forth hereinafter. To the extent not defined herein, the capitalized terms
used herein have the meanings ascribed to such terms in the Agreement. This
Certificate is issued under and is subject to the terms, provisions and
conditions of the Agreement, to which Agreement the Holder of this Certificate
by virtue of the acceptance hereof assents and by which such Holder is bound.

               Pursuant to the terms of the Agreement, a distribution will be
made on the 25th day of each month or, if such 25th day is not a Business Day,
the Business Day immediately following (the "Distribution Date"), commencing on
the first Distribution Date specified above, to the Person in whose name this
Certificate is registered at the close of business on the Record Date, in an
amount equal to the product of the Percentage Interest evidenced by this
Certificate and, subject to the prior rights of the Class A Certificates and
each Class of Class B Certificates bearing a lower numerical designation as
specified in the Agreement, any Class B-4 Distribution Amount required to be
distributed to Holders of the Class B-4 Certificates on such Distribution Date,
subject to adjustment, in certain events, as specified in the Agreement. The
pass-through rate on the Class B-4 Certificates applicable to each Distribution
Date will be a per annum rate equal to the Net WAC. The amount of interest which
accrues on this Certificate in any month will be subject to reduction with
respect to any Non-Supported Interest Shortfall and any Relief Act Shortfall
allocated to the Class B-4 Certificates, as described in the Agreement.

               Distributions on this Certificate will be made by the Paying
Agent by check mailed to the address of the Person entitled thereto, as such
name and address shall appear on the Certificate Register, unless such Person
has notified the Paying Agent pursuant to the Agreement that such payments are
to be made by wire transfer of immediately available funds. Notwithstanding the
above, the final distribution in reduction of the Principal Balance of this
Certificate will be made after due notice of the pendency of such distribution
and only upon presentation and surrender of this Certificate at the office or
agency of the Paying Agent specified for that purpose in the notice of final
distribution.

               No transfer of a Class B-4 Certificate will be made unless such
transfer is exempt from the registration requirements of the Securities Act of
1933, as amended, and any applicable state securities laws or is made in
accordance with said Act and laws. In the event that such a transfer is desired
to be made by the Holder hereof, the transferee will be required to execute an
investment letter in the form described in the Agreement. The Holder hereof
desiring to effect such transfer shall, and does hereby agree to, indemnify the
Trustee, the Depositor, the Master Servicer, and any Paying Agent 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. The representations required in any
investment letter shall be deemed to have been made in connection with a
transfer of a Class B-4 Certificate that is a Book-Entry Certificate. In
connection with any such transfer, the Master Servicer will also require (i) a
representation letter, in the form as described in the Agreement, stating either
(a) that the transferee is not a Plan and is not acting on behalf of a Plan or
using the assets of a Plan to effect such purchase or (b) subject to certain
conditions described in the Agreement, that the source of funds used to purchase
this Certificate is an "insurance company general account," or (ii) if such
transferee is a Plan, (a) an opinion of counsel acceptable to and in form and
substance satisfactory to the Master Servicer and the Depositor with respect to
certain matters and (b) such other documentation as the Depositor or the Master
Servicer may require, as described in the Agreement. For purposes of clause (i)
of this paragraph, each person who acquires this certificate or any interest
therein shall be deemed to have made the representations required by the
representation letter referred to in the preceding sentence, unless such person
shall have provided such representation letter or the opinion of counsel
referred to in the preceding sentence to the Depositor and Master Servicer.

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

               This Certificate constitutes a "regular interest" in a "real
estate mortgage investment conduit" as those terms are defined in Section
860G(a)(1) and Section 860D, respectively, of the Internal Revenue Code of 1986,
as amended.

               Unless this Certificate has been countersigned by an authorized
officer of the Authenticating Agent, 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 Paying Agent has caused this Certificate
to be duly executed as of the date set forth below.

Dated:

                                               Wells Fargo Bank, N.A.,
                                                     Paying Agent

                                               By____________________________
                                                     Authorized Officer

Countersigned:

Wells Fargo Bank, N.A.,
  Authenticating Agent

By ________________________
   Authorized Officer

<PAGE>

                                   EXHIBIT B-5
                     [FORM OF FACE OF CLASS B-5 CERTIFICATE]

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A
CERTIFICATES, THE CLASS B-1 CERTIFICATES, THE CLASS B-2 CERTIFICATES, THE CLASS
B-3 CERTIFICATES AND THE CLASS B-4 CERTIFICATES AS DESCRIBED IN THE AGREEMENT
REFERRED TO HEREIN.

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

THE INITIAL PURCHASER IN THIS CERTIFICATE, AND EACH SUBSEQUENT PURCHASER OF THIS
CERTIFICATE, BY PURCHASING THIS CERTIFICATE OR AN INTEREST HEREIN, IS DEEMED TO
HAVE AGREED TO COMPLY WITH CERTAIN TRANSFER REQUIREMENTS SET FORTH IN THE
POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN.

EXCEPT AS PROVIDED IN SECTION 5.02(C) OF THE AGREEMENT REFERRED TO HEREIN, THIS
CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO ANY PERSON THAT HAS NOT
DELIVERED A REPRESENTATION LETTER STATING EITHER (A) THAT THE TRANSFEREE IS NOT
AN EMPLOYEE BENEFIT PLAN OR OTHER RETIREMENT ARRANGEMENT SUBJECT TO TITLE I OF
THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR
SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"), OR A
GOVERNMENTAL PLAN, AS DEFINED IN SECTION 3(32) OF ERISA, SUBJECT TO ANY FEDERAL,
STATE OR LOCAL LAW WHICH IS, TO A MATERIAL EXTENT, SIMILAR TO THE FOREGOING
PROVISIONS OF ERISA OR THE CODE (COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON
BEHALF OF OR INVESTING THE ASSETS OF A PLAN OR (B) SUBJECT TO CERTAIN CONDITIONS
SET FORTH IN THE AGREEMENT, THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS
CERTIFICATE IS AN "INSURANCE COMPANY GENERAL ACCOUNT." EACH PERSON WHO ACQUIRES
THIS CERTIFICATE OR ANY INTEREST THEREIN SHALL BE DEEMED TO HAVE MADE THE
REPRESENTATIONS REQUIRED BY THE REPRESENTATION LETTER REFERRED TO IN THE
PRECEDING SENTENCE, UNLESS SUCH PERSON SHALL HAVE PROVIDED SUCH REPRESENTATION
LETTER OR THE OPINION OF COUNSEL REFERRED TO IN SECTION 5.02(C) OF THE AGREEMENT
REFERRED TO HEREIN TO THE MASTER SERVICER AND DEPOSITOR.

<PAGE>

                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 2007-AR8, CLASS B-5

          evidencing an interest in a pool of adjustable interest rate,
         monthly pay, fully amortizing, first lien, one- to four-family
                       residential mortgage loans sold by

                    WELLS FARGO ASSET SECURITIES CORPORATION
               (Not an interest in or obligation of the Depositor)

               THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN
INTEREST IN, THE DEPOSITOR, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR
AFFILIATES, AND IS NOT INSURED OR GUARANTEED BY THE DEPOSITOR, THE MASTER
SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR
PRIVATE INSURER.

               DISTRIBUTIONS IN REDUCTION OF THE PRINCIPAL BALANCE OF THIS
CERTIFICATE WILL BE MADE IN THE MANNER DESCRIBED IN THE AGREEMENT. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT ANY TIME MAY BE LESS
THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                    Cut-Off Date:  November 1, 2007

CUSIP No.: 94985Y AG2              First Distribution Date: December 26, 2007

ISIN No.: US94985YAG26             Denomination:  $

Percentage Interest evidenced      Final Scheduled Maturity Date:  November 25,
by this Certificate: %             2037

<PAGE>

               THIS CERTIFIES THAT ____________________________ is the
registered owner of the Percentage Interest evidenced by this Certificate in
monthly distributions to the Holders of the Class B-5 Certificates with respect
to a Trust Estate consisting of a pool of adjustable interest rate, monthly pay,
fully amortizing, first lien, one- to four-family residential mortgage loans
(the "Mortgage Loans") formed by Wells Fargo Asset Securities Corporation
(hereinafter called the "Depositor," which term includes any successor entity
under the Agreement referred to below). The Trust Estate was created pursuant to
a Pooling and Servicing Agreement dated as of November 29, 2007 (the
"Agreement") among the Depositor, Wells Fargo Bank, N.A., as master servicer
(the "Master Servicer"), and HSBC Bank USA, National Association, as trustee
(the "Trustee"), a summary of certain of the pertinent provisions of which is
set forth hereinafter. To the extent not defined herein, the capitalized terms
used herein have the meanings ascribed to such terms in the Agreement. This
Certificate is issued under and is subject to the terms, provisions and
conditions of the Agreement, to which Agreement the Holder of this Certificate
by virtue of the acceptance hereof assents and by which such Holder is bound.

               Pursuant to the terms of the Agreement, a distribution will be
made on the 25th day of each month or, if such 25th day is not a Business Day,
the Business Day immediately following (the "Distribution Date"), commencing on
the first Distribution Date specified above, to the Person in whose name this
Certificate is registered at the close of business on the Record Date, in an
amount equal to the product of the Percentage Interest evidenced by this
Certificate and, subject to the prior rights of the Class A Certificates and
each Class of Class B Certificates bearing a lower numerical designation as
specified in the Agreement, any Class B-5 Distribution Amount required to be
distributed to Holders of the Class B-5 Certificates on such Distribution Date,
subject to adjustment, in certain events, as specified in the Agreement. The
pass-through rate on the Class B-5 Certificates applicable to each Distribution
Date will be a per annum rate equal to the Net WAC. The amount of interest which
accrues on this Certificate in any month will be subject to reduction with
respect to any Non-Supported Interest Shortfall and any Relief Act Shortfall
allocated to the Class B-5 Certificates, as described in the Agreement.

               Distributions on this Certificate will be made by the Paying
Agent by check mailed to the address of the Person entitled thereto, as such
name and address shall appear on the Certificate Register, unless such Person
has notified the Paying Agent pursuant to the Agreement that such payments are
to be made by wire transfer of immediately available funds. Notwithstanding the
above, the final distribution in reduction of the Principal Balance of this
Certificate will be made after due notice of the pendency of such distribution
and only upon presentation and surrender of this Certificate at the office or
agency of the Paying Agent specified for that purpose in the notice of final
distribution.

               No transfer of a Class B-5 Certificate will be made unless such
transfer is exempt from the registration requirements of the Securities Act of
1933, as amended, and any applicable state securities laws or is made in
accordance with said Act and laws. In the event that such a transfer is desired
to be made by the Holder hereof, the transferee will be required to execute an
investment letter in the form described in the Agreement. The Holder hereof
desiring to effect such transfer shall, and does hereby agree to, indemnify the
Trustee, the Depositor, the Master Servicer, and any Paying Agent 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. The representations required in any
investment letter shall be deemed to have been made in connection with a
transfer of a Class B-5 Certificate that is a Book-Entry Certificate. In
connection with any such transfer, the Master Servicer will also require (i) a
representation letter, in the form as described in the Agreement, stating either
(a) that the transferee is not a Plan and is not acting on behalf of a Plan or
using the assets of a Plan to effect such purchase or (b) subject to certain
conditions described in the Agreement, that the source of funds used to purchase
this Certificate is an "insurance company general account," or (ii) if such
transferee is a Plan, (a) an opinion of counsel acceptable to and in form and
substance satisfactory to the Master Servicer and the Depositor with respect to
certain matters and (b) such other documentation as the Depositor or the Master
Servicer may require, as described in the Agreement. For purposes of clause (i)
of this paragraph, each person who acquires this certificate or any interest
therein shall be deemed to have made the representations required by the
representation letter referred to in the preceding sentence, unless such person
shall have provided such representation letter or the opinion of counsel
referred to in the preceding sentence to the Depositor and Master Servicer.

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

               This Certificate constitutes a "regular interest" in a "real
estate mortgage investment conduit" as those terms are defined in Section
860G(a)(1) and Section 860D, respectively, of the Internal Revenue Code of 1986,
as amended.

               Unless this Certificate has been countersigned by an authorized
officer of the Authenticating Agent, 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 Paying Agent has caused this Certificate
to be duly executed as of the date set forth below.

Dated:

                                               Wells Fargo Bank, N.A.,
                                                     Paying Agent

                                               By____________________________
                                                     Authorized Officer

Countersigned:

Wells Fargo Bank, N.A.,
  Authenticating Agent

By ________________________
   Authorized Officer

<PAGE>

                                   EXHIBIT B-6
                     [FORM OF FACE OF CLASS B-6 CERTIFICATE]

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A
CERTIFICATES, THE CLASS B-1 CERTIFICATES, THE CLASS B-2 CERTIFICATES, THE CLASS
B-3 CERTIFICATES, THE CLASS B-4 CERTIFICATES AND THE CLASS B-5 CERTIFICATES AS
DESCRIBED IN THE AGREEMENT REFERRED TO HEREIN.

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

THE INITIAL PURCHASER IN THIS CERTIFICATE, AND EACH SUBSEQUENT PURCHASER OF THIS
CERTIFICATE, BY PURCHASING THIS CERTIFICATE OR AN INTEREST HEREIN, IS DEEMED TO
HAVE AGREED TO COMPLY WITH CERTAIN TRANSFER REQUIREMENTS SET FORTH IN THE
POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN.

EXCEPT AS PROVIDED IN SECTION 5.02(C) OF THE AGREEMENT REFERRED TO HEREIN, THIS
CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO ANY PERSON THAT HAS NOT
DELIVERED A REPRESENTATION LETTER STATING EITHER (A) THAT THE TRANSFEREE IS NOT
AN EMPLOYEE BENEFIT PLAN OR OTHER RETIREMENT ARRANGEMENT SUBJECT TO TITLE I OF
THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR
SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"), OR A
GOVERNMENTAL PLAN, AS DEFINED IN SECTION 3(32) OF ERISA, SUBJECT TO ANY FEDERAL,
STATE OR LOCAL LAW WHICH IS, TO A MATERIAL EXTENT, SIMILAR TO THE FOREGOING
PROVISIONS OF ERISA OR THE CODE (COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON
BEHALF OF OR INVESTING THE ASSETS OF A PLAN OR (B) SUBJECT TO CERTAIN CONDITIONS
SET FORTH IN THE AGREEMENT, THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS
CERTIFICATE IS AN "INSURANCE COMPANY GENERAL ACCOUNT." EACH PERSON WHO ACQUIRES
THIS CERTIFICATE OR ANY INTEREST THEREIN SHALL BE DEEMED TO HAVE MADE THE
REPRESENTATIONS REQUIRED BY THE REPRESENTATION LETTER REFERRED TO IN THE
PRECEDING SENTENCE, UNLESS SUCH PERSON SHALL HAVE PROVIDED SUCH REPRESENTATION
LETTER OR THE OPINION OF COUNSEL REFERRED TO IN SECTION 5.02(C) OF THE AGREEMENT
REFERRED TO HEREIN TO THE MASTER SERVICER AND DEPOSITOR.

<PAGE>

                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 2007-AR8, CLASS B-6

          evidencing an interest in a pool of adjustable interest rate,
         monthly pay, fully amortizing, first lien, one- to four-family
                       residential mortgage loans sold by

                    WELLS FARGO ASSET SECURITIES CORPORATION
               (Not an interest in or obligation of the Depositor)

               THIS CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN
INTEREST IN, THE DEPOSITOR, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR
AFFILIATES, AND IS NOT INSURED OR GUARANTEED BY THE DEPOSITOR, THE MASTER
SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR
PRIVATE INSURER.

               DISTRIBUTIONS IN REDUCTION OF THE PRINCIPAL BALANCE OF THIS
CERTIFICATE WILL BE MADE IN THE MANNER DESCRIBED IN THE AGREEMENT. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT ANY TIME MAY BE LESS
THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                    Cut-Off Date:  November 1, 2007

CUSIP No.: 94985Y AH0              First Distribution Date: December 26, 2007

ISIN No.: US94985YAH09             Denomination:  $

Percentage Interest evidenced      Final Scheduled Maturity Date:  November 25,
by this Certificate: %             2037

<PAGE>

               THIS CERTIFIES THAT ____________________________ is the
registered owner of the Percentage Interest evidenced by this Certificate in
monthly distributions to the Holders of the Class B-6 Certificates with respect
to a Trust Estate consisting of a pool of adjustable interest rate, monthly pay,
fully amortizing, first lien, one- to four-family residential mortgage loans
(the "Mortgage Loans") formed by Wells Fargo Asset Securities Corporation
(hereinafter called the "Depositor," which term includes any successor entity
under the Agreement referred to below). The Trust Estate was created pursuant to
a Pooling and Servicing Agreement dated as of November 29, 2007 (the
"Agreement") among the Depositor, Wells Fargo Bank, N.A., as master servicer
(the "Master Servicer"), and HSBC Bank USA, National Association, as trustee
(the "Trustee"), a summary of certain of the pertinent provisions of which is
set forth hereinafter. To the extent not defined herein, the capitalized terms
used herein have the meanings ascribed to such terms in the Agreement. This
Certificate is issued under and is subject to the terms, provisions and
conditions of the Agreement, to which Agreement the Holder of this Certificate
by virtue of the acceptance hereof assents and by which such Holder is bound.

               Pursuant to the terms of the Agreement, a distribution will be
made on the 25th day of each month or, if such 25th day is not a Business Day,
the Business Day immediately following (the "Distribution Date"), commencing on
the first Distribution Date specified above, to the Person in whose name this
Certificate is registered at the close of business on the Record Date, in an
amount equal to the product of the Percentage Interest evidenced by this
Certificate and, subject to the prior rights of the Class A Certificates and
each Class of Class B Certificates bearing a lower numerical designation as
specified in the Agreement, any Class B-6 Distribution Amount required to be
distributed to Holders of the Class B-6 Certificates on such Distribution Date,
subject to adjustment, in certain events, as specified in the Agreement. The
pass-through rate on the Class B-6 Certificates applicable to each Distribution
Date will be a per annum rate equal to the Net WAC. The amount of interest which
accrues on this Certificate in any month will be subject to reduction with
respect to any Non-Supported Interest Shortfall and any Relief Act Shortfall
allocated to the Class B-6 Certificates, as described in the Agreement.

               Distributions on this Certificate will be made by the Paying
Agent by check mailed to the address of the Person entitled thereto, as such
name and address shall appear on the Certificate Register, unless such Person
has notified the Paying Agent pursuant to the Agreement that such payments are
to be made by wire transfer of immediately available funds. Notwithstanding the
above, the final distribution in reduction of the Principal Balance of this
Certificate will be made after due notice of the pendency of such distribution
and only upon presentation and surrender of this Certificate at the office or
agency of the Paying Agent specified for that purpose in the notice of final
distribution.

               No transfer of a Class B-6 Certificate will be made unless such
transfer is exempt from the registration requirements of the Securities Act of
1933, as amended, and any applicable state securities laws or is made in
accordance with said Act and laws. In the event that such a transfer is desired
to be made by the Holder hereof, the transferee will be required to execute an
investment letter in the form described in the Agreement. The Holder hereof
desiring to effect such transfer shall, and does hereby agree to, indemnify the
Trustee, the Depositor, the Master Servicer, and any Paying Agent 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. The representations required in any
investment letter shall be deemed to have been made in connection with a
transfer of a Class B-6 Certificate that is a Book-Entry Certificate. In
connection with any such transfer, the Master Servicer will also require (i) a
representation letter, in the form as described in the Agreement, stating either
(a) that the transferee is not a Plan and is not acting on behalf of a Plan or
using the assets of a Plan to effect such purchase or (b) subject to certain
conditions described in the Agreement, that the source of funds used to purchase
this Certificate is an "insurance company general account," or (ii) if such
transferee is a Plan, (a) an opinion of counsel acceptable to and in form and
substance satisfactory to the Master Servicer and the Depositor with respect to
certain matters and (b) such other documentation as the Depositor or the Master
Servicer may require, as described in the Agreement. For purposes of clause (i)
of this paragraph, each person who acquires this certificate or any interest
therein shall be deemed to have made the representations required by the
representation letter referred to in the preceding sentence, unless such person
shall have provided such representation letter or the opinion of counsel
referred to in the preceding sentence to the Depositor and Master Servicer.

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

               This Certificate constitutes a "regular interest" in a "real
estate mortgage investment conduit" as those terms are defined in Section
860G(a)(1) and Section 860D, respectively, of the Internal Revenue Code of 1986,
as amended.

               Unless this Certificate has been countersigned by an authorized
officer of the Authenticating Agent, 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 Paying Agent has caused this Certificate
to be duly executed as of the date set forth below.

Dated:

                                               Wells Fargo Bank, N.A.,
                                                     Paying Agent

                                               By____________________________
                                                     Authorized Officer

Countersigned:

Wells Fargo Bank, N.A.,
  Authenticating Agent

By ________________________
   Authorized Officer

<PAGE>

                                    EXHIBIT C

                [Form of Reverse of Series 2007-AR8 Certificates]

                    WELLS FARGO ASSET SECURITIES CORPORATION
                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 2007-AR8

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

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

               As provided in the Agreement, withdrawals from the Certificate
Account created for the benefit of Certificateholders may be made by the Master
Servicer from time to time for purposes other than distributions to
Certificateholders, such purposes including reimbursement to a Servicer, the
Master Servicer or the Trustee, as applicable, of advances made by such
Servicer, the Master Servicer or the Trustee.

               The Agreement permits, with certain exceptions therein provided,
the amendment of the Agreement and the modification of the rights and
obligations of the Depositor, the Master Servicer and the Trustee and the rights
of the Certificateholders under the Agreement at any time by the Depositor, the
Master Servicer and the Trustee with the consent of the Holders of Certificates
evidencing in the aggregate not less than 66 2/3% of the Voting Interests of
each Class of Certificates affected thereby. Any such consent by the Holder of
this Certificate shall be conclusive and binding on such Holder and upon all
future holders of this Certificate and of any Certificate issued upon the
transfer hereof or in exchange hereof or in lieu hereof whether or not notation
of such consent is made upon the Certificate. The Agreement also permits the
amendment thereof in certain circumstances without the consent of the Holders of
any of the Certificates.

               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 office or agency maintained by the Certificate Registrar, duly
endorsed by, or accompanied by an assignment in the form below or other written
instrument of transfer in form satisfactory to the Certificate Registrar, duly
executed by the Holder hereof or such Holder's attorney duly authorized in
writing, and thereupon one or more new Certificates of authorized Denominations
evidencing the same Class and aggregate Percentage Interest will be issued to
the designated transferee or transferees.

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

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

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

               The obligations created by the Agreement in respect of the
Certificates and the Trust Estate created thereby shall terminate upon the last
action required to be taken by the Paying Agent on the Final Distribution Date
pursuant to the Agreement following the earlier of (i) the payment or other
liquidation (or advance with respect thereto) of the last Mortgage Loan subject
thereto or the disposition of all property acquired upon foreclosure or deed in
lieu of foreclosure of any Mortgage Loan, and (ii) the purchase by the Depositor
from the Trust Estate of all remaining Mortgage Loans and all property acquired
in respect of such Mortgage Loans; provided, however, that the Trust Estate will
in no event 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 of the
Agreement. The Agreement permits, but does not require, the Depositor to
purchase all remaining 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 option will effect early retirement of the Certificates, the
Depositor's right to exercise such option being subject to the Pool Scheduled
Principal Balance of the Mortgage Loans as of the Distribution Date upon which
the proceeds of such repurchase are distributed being less than ten percent of
the Cut-Off Date Aggregate Principal Balance.

<PAGE>

                                   ASSIGNMENT
                                   ----------

FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s)
unto
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
    (Please print or typewrite name and address including postal zip code of
                                   assignee)

the beneficial interest evidenced by the within Mortgage Pass-Through
Certificate and hereby authorizes the transfer of registration of such interest
to assignee on the Certificate Register of the Trust Estate.

               I (We) further direct the Certificate Registrar to issue a new
Certificate of a like Denomination or Percentage Interest and Class, to the
above named assignee and deliver such Certificate to the following address:

________________________________________________________________________________
________________________________________________________________________________

Social Security or other Identifying Number of Assignee:

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 D

                                    RESERVED

<PAGE>

                                    EXHIBIT E

                               CUSTODIAL AGREEMENT
                               -------------------

            THIS CUSTODIAL AGREEMENT (as amended and supplemented from time to
time, the "Agreement"), dated as of November 29, 2007, by and among HSBC BANK
USA, NATIONAL ASSOCIATION, not individually, but solely as Trustee (including
its successors under the Pooling and Servicing Agreement defined below, the
"Trustee"), WELLS FARGO ASSET SECURITIES CORPORATION (together with any
successor in interest, the "Depositor"), WELLS FARGO BANK, N.A. (together with
any successor in interest or successor under the Pooling and Servicing Agreement
referred to below, the "Master Servicer") and WELLS FARGO BANK, N.A. (together
with any successor in interest or any successor appointed hereunder, the
"Custodian").

                           W I T N E S S E T H  T H A T
                           - - - - - - - - - -  - - - -

            WHEREAS, the Depositor, the Master Servicer, and the Trustee, have
entered into a Pooling and Servicing Agreement dated as of November 29, 2007
relating to the issuance of Mortgage Pass-Through Certificates, Series 2007-AR8
(as amended and supplemented from time to time, the "Pooling and Servicing
Agreement"); and

            WHEREAS, the Custodian has agreed to act as agent for the Trustee
for the purposes of receiving and holding certain documents and other
instruments delivered by the Depositor under the Pooling and Servicing
Agreement, all upon the terms and conditions and subject to the limitations
hereinafter set forth;

            NOW, THEREFORE, in consideration of the premises and the mutual
covenants and agreements hereinafter set forth, the Trustee, the Depositor, the
Master Servicer and the Custodian hereby agree as follows:

                                    ARTICLE I

                                   Definitions

            Capitalized terms used in this Agreement and not defined herein
shall have the meanings assigned in the Pooling and Servicing Agreement, unless
otherwise required by the context herein.

                                   ARTICLE II

                          Custody of Mortgage Documents

            Section 2.1. Custodian to Act as Agent; Acceptance of Custodial
Files. Subject to Section 2.3 hereof, the Custodian, as the duly appointed agent
of the Trustee for these purposes, declares that it holds and will hold the
documents delivered to it pursuant to Section 2.01 of the Pooling and Servicing
Agreement and any other documents constituting part of the Owner Mortgage Loan
File or Retained Mortgage Loan File received on or subsequent to the date hereof
(the "Custodial Files") as agent for the Trustee, in trust, for the use and
benefit of all present and future Certificateholders. The Depositor shall give
written notice to the Custodian within 10 business days of the occurrence of a
Document Transfer Event.

            Section 2.2. Recordation of Assignments. Unless an assignment of a
Mortgage is not required to be recorded in accordance with Section 2.01 of the
Pooling and Servicing Agreement, if any Custodial File includes one or more
assignments to the Trustee of Mortgage Notes that have not been recorded, each
such assignment shall be delivered by the Custodian to the Depositor for the
purpose of recording it in the appropriate public office for real property
records, and the Depositor, at no expense to the Custodian, shall promptly cause
to be recorded in the appropriate public office for real property records each
such assignment and, upon receipt thereof from such public office, shall return
each such assignment to the Custodian.

            Section 2.3. Review of Custodial Files. The Custodian agrees, for
the benefit of Certificateholders, to review, in accordance with the provisions
of Section 2.02 of the Pooling and Servicing Agreement, each Custodial File and
to provide the initial and final certifications in the forms of Exhibits N and O
to the Pooling and Servicing Agreement in accordance with the provisions
thereof. If in performing the review required by this Section 2.3 the Custodian
finds any document or documents constituting a part of a Custodial File to be
missing or defective, the Custodian shall follow the procedures specified in the
Pooling and Servicing Agreement.

            Section 2.4. Notification of Breaches of Representations and
Warranties. Upon discovery by the Custodian of a breach of any representation or
warranty made by the Depositor or the Master Servicer as set forth in the
Pooling and Servicing Agreement, the Custodian shall follow the procedures
specified in the Pooling and Servicing Agreement.

            Section 2.5. Custodian to Cooperate; Release of Custodial Files.
Upon the payment in full of any Mortgage Loan, or the receipt by the Master
Servicer of a notification that payment in full will be escrowed in a manner
customary for such purposes, the Master Servicer or applicable Servicer shall
immediately deliver to the Custodian two copies of a Request for Release or such
request in an electronic format acceptable to the Custodian and shall request
delivery to it of the Custodial File. The Custodian agrees, within five business
days of receipt of such Request for Release, to release the related Custodial
File to the Master Servicer or applicable Servicer.

            From time to time as is appropriate for the servicing or foreclosure
of any Mortgage Loan, the Master Servicer or applicable Servicer shall deliver
to the Custodian two copies of a Request for Release of a Servicing Officer
requesting that possession of the Custodial File be released to the Servicer or
Master Servicer and certifying as to the reason for such release. Upon receipt
of the foregoing, the Custodian shall deliver the Custodial File to the Master
Servicer or applicable Servicer. The Master Servicer or applicable Servicer
shall cause each Custodial File therein so released to be returned to the
Custodian when the need therefor by the Master Servicer or applicable Servicer
no longer exists, unless (i) the Mortgage Loan has been liquidated and the
Liquidation Proceeds relating to the Mortgage Loan have been deposited in the
Certificate Account to the extent required by the Pooling and Servicing
Agreement or (ii) the Custodial File or such document has been delivered to an
attorney, or to a public trustee or other public official as required by law,
for purposes of initiating or pursuing legal action or other proceedings for the
foreclosure of the Mortgaged Property either judicially or non-judicially. In
the event of the liquidation of a Mortgage Loan, the Master Servicer or
applicable Servicer shall deliver two copies of a Request for Release with
respect thereto to the Custodian upon deposit of the related Liquidation
Proceeds in the Certificate Account to the extent required by the Pooling and
Servicing Agreement.

            The Custodian shall maintain records (i) identifying all requests
made by Servicers or the Master Servicer (other than requests relating to
Custodial Files already released by the Custodian) for the release by the
Custodian of Custodial Files with respect to the Mortgage Loans and (ii) all
Custodial Files released by the Custodian.

            Section 2.6. Assumption Agreements. In the event that any assumption
agreement or substitution of liability agreement is entered into with respect to
any Mortgage Loan subject to this Agreement in accordance with the terms and
provisions of the Pooling and Servicing Agreement, the Master Servicer shall
notify the Custodian that such assumption or substitution agreement has been
completed by forwarding to the Custodian the original of such assumption or
substitution agreement, which copy shall be added to the related Custodial File
and, for all purposes, shall be considered a part of such Custodial File to the
same extent as all other documents and instruments constituting parts thereof.

                                   ARTICLE III

                            Concerning the Custodian

            Section 3.1. Custodian a Bailee and Agent of the Trustee. With
respect to each Mortgage Note, Mortgage and other documents constituting each
Custodial File which are delivered to the Custodian, the Custodian is
exclusively the bailee and agent of the Trustee, holds such documents for the
benefit of Certificateholders and undertakes to perform such duties and only
such duties as are specifically set forth in this Agreement and in the Pooling
and Servicing Agreement. All provisions of the Pooling and Servicing Agreement
setting forth duties of the Custodian in more detail are hereby incorporated by
reference into this Agreement. Except upon compliance with the provisions of
Section 2.5 of this Agreement and the provisions of the Pooling and Servicing
Agreement, no Mortgage Note or other document constituting a part of a Custodial
File shall be delivered by the Custodian to the Depositor or the Master Servicer
or otherwise released from the possession of the Custodian.

            Section 3.2. Indemnification. The Depositor hereby agrees to
indemnify and hold the Custodian harmless from and against all claims,
liabilities, losses, actions, suits or proceedings at law or in equity, or any
other expenses, fees or charges of any character or nature, which the Custodian
may incur or with which the Custodian may be threatened by reasons of its acting
as custodian under this Agreement, including indemnification of the Custodian
against any and all expenses, including attorney's fees if counsel for the
Custodian has been approved by the Depositor, and the cost of defending any
action, suit or proceedings or resisting any claim. Notwithstanding the
foregoing, it is specifically understood and agreed that in the event any such
claim, liability, loss, action, suit or proceeding or other expense, fees, or
charge shall have been caused by reason of any negligent act, negligent failure
to act, or willful misconduct on the part of the Custodian, or which shall
constitute a willful breach of its duties hereunder, the indemnification
provisions of this Agreement shall not apply.

            Section 3.3. Custodian May Own Certificates. The Custodian in its
individual or any other capacity may become the owner or pledgee of Certificates
with the same rights it would have if it were not Custodian.

            Section 3.4. Master Servicer to Pay Custodian's Fees and Expenses.
The Master Servicer covenants and agrees to pay to the Custodian from time to
time, and the Custodian shall be entitled to, reasonable compensation for all
services rendered by it in the exercise and performance of any of the powers and
duties hereunder of the Custodian, and the Master Servicer will pay or reimburse
the Custodian upon its request for all reasonable expenses, disbursements and
advances incurred or made by the Custodian in accordance with any of the
provisions of this Agreement (including the reasonable compensation and the
expenses and disbursements of its counsel and of all persons not regularly in
its employ), except any such expense, disbursement or advance as may arise from
its negligence or bad faith. The Master Servicer's obligations regarding
payments due to the Custodian pursuant to this Section 3.4 shall survive the
termination of this Agreement with respect to any fees and expenses due
hereunder.

            Section 3.5. Custodian May Resign; Trustee May Remove Custodian. The
Custodian, upon 30 days written notice to the Depositor, the Master Servicer and
the Trustee, may resign from the obligations and duties hereby imposed upon it
as such obligations and duties relate to its acting as Custodian of the Mortgage
Loans. Upon receiving such notice of resignation, the Trustee shall either take
custody of the Custodial Files itself and give prompt notice thereof to the
Depositor, the Master Servicer and the Custodian or promptly appoint a successor
Custodian by written instrument, in duplicate, one copy of which instrument
shall be delivered to the resigning Custodian and one copy to the successor
Custodian. If the Trustee shall not have taken custody of the Custodial Files
and no successor Custodian shall have been so appointed and have accepted
resignation, the resigning Custodian may petition any court of competent
jurisdiction for the appointment of a successor Custodian.

            The Trustee, upon 60 days written notice to the Depositor, the
Master Servicer and the Custodian, may remove the Custodian. In such event, the
Trustee shall appoint, or petition a court of competent jurisdiction to appoint,
a successor Custodian hereunder. Any successor Custodian shall be a depository
institution subject to supervision or examination by federal or state authority
and shall be able to satisfy the other requirements contained in Section 3.7.

            Any resignation or removal of the Custodian and appointment of a
successor Custodian pursuant to any of the provisions of this Section 3.5 shall
become effective upon acceptance of appointment by the successor Custodian. The
Trustee shall give prompt notice to the Depositor and the Master Servicer of the
appointment of any successor Custodian. No successor Custodian shall have been
appointed and accepted appointment by the Trustee without the prior approval of
the Depositor and the Master Servicer.

            Section 3.6. Merger or Consolidation of Custodian. Any Person into
which the Custodian may be merged or converted or with which it may be
consolidated, or any Person resulting from any merger, conversion or
consolidation to which the Custodian shall be a party, or any Person succeeding
to the business of the Custodian, shall be the successor of the Custodian
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.

            The Custodian and such successor or surviving Person shall notify
the Depositor, the Master Servicer and the Trustee of any such merger,
conversion or consolidation at least two Business Days prior to the effective
date thereof and shall provide the Depositor and the Master Servicer with all
information required by the Depositor to comply with its reporting obligations
not later than the effective date of such merger, conversion or consolidation
(unless giving prior notice would be prohibited by applicable law or by a
confidentiality agreement, in which case notice shall be given by 12 noon
eastern time one Business Day after such merger or consolidation).

            Section 3.7. Representations of the Custodian. The Custodian hereby
represents that it is a depository institution subject to supervision or
examination by a federal or state authority, has a combined capital and surplus
of at least $10,000,000 and is qualified to do business in the jurisdiction in
which it will hold any Custodial File.

            Section 3.8. Limitations on the Responsibilities of the Custodian.

            (a) Neither the Custodian nor any of its Affiliates, directors,
officers, agents, counsel, attorneys-in-fact, and employees shall be liable for
any action or omission to act hereunder except for its own or such person's
gross negligence or willful misconduct. Notwithstanding the foregoing sentence,
in no event shall the Custodian or its Affiliates, directors, officers, agents,
counsel, attorneys-in-fact, and employees be held liable for any special,
indirect, punitive or consequential damages resulting from any action taken or
omitted to be taken by it or them hereunder or in connection herewith even if
advised of the possibility of such damages. The provisions of this Section 3.8
shall survive the resignation or removal of the Custodian and the termination of
this Agreement.

            (b) The Custodian shall not be responsible for preparing or filing
any reports or returns relating to federal, state or local income taxes with
respect to this Agreement, other than for the Custodian's compensation or for
reimbursement of expenses.

            (c) The Custodian shall not be responsible or liable for, and makes
no representation or warranty with respect to, the validity, adequacy or
perfection of any lien upon or security interest in any Mortgage File.

            (d) The Custodian shall not be responsible for delays or failures in
performance resulting from acts beyond its control. Such acts shall include, but
not be limited to, acts of God, strikes, lockouts, riots, acts of war or
terrorism, epidemics, nationalization, expropriation, currency restrictions,
governmental regulations superimposed after the fact, fire, communication line
failures, computer viruses, power failures, earthquakes or other disasters.

            (e) The duties and obligations of the Custodian shall only be such
as are expressly set forth in this Agreement and the Pooling and Servicing
Agreement or as set forth in a written amendment to this Agreement or the
Pooling and Servicing Agreement executed by the parties hereto or their
successors and assigns. In the event that any provision of this Agreement
implies or requires that action or forbearance be taken by a party, but is
silent as to which party has the duty to act or refrain from acting, the parties
agree that the Custodian shall not be the party required to take the action or
refrain from acting. In no event shall the Custodian have any responsibility to
ascertain or take action except as expressly provided herein.

            (f) Nothing in this Agreement shall be deemed to impose on the
Custodian any duty to qualify to do business in any jurisdiction, other than (i)
any jurisdiction where any Mortgage File is or may be held by the Custodian from
time to time hereunder, and (ii) any jurisdiction where its ownership of
property or conduct of business requires such qualification and where failure to
qualify could have a material adverse effect on the Custodian or its property or
business or on the ability of the Custodian to perform its duties hereunder.

            (g) The Custodian shall have no duty to ascertain whether or not any
cash amount or payment has been received by the Trustee, the Depositor, the
Master Servicer, or any third person.

                                   ARTICLE IV

           Documents and Notices Required to be Delivered by Custodian

            Section 4.1 Assessment of Servicing Compliance; Registered Public
Accounting Firm Attestation Reports; Exchange Act Reporting. (a) The Custodian
shall furnish, or cause to be furnished in the case of clause (iii), to the
Master Servicer, no later than March 5 of each year or if such day is not a
Business Day, the next Business Day (with a 10 calendar day cure period, but in
no event later than March 15), commencing in March 2008, the following:

            (i) a report (in form and substance reasonably satisfactory to the
      Master Servicer and the Depositor) regarding the Custodian's assessment of
      compliance with the Servicing Criteria applicable to it during the
      immediately preceding calendar year, as required under Rules 13a-18 and
      15d-18 of the Exchange Act and Item 1122 of Regulation AB. Such report
      shall be addressed to the Master Servicer and signed by an authorized
      officer of the Custodian, and shall address, at a minimum, each of the
      Servicing Criteria applicable to the Custodian, as specified in the table
      in Exhibit R to the Pooling and Servicing Agreement;

            (ii) a report of a registered public accounting firm reasonably
      acceptable to the Master Servicer and the Depositor that attests to, and
      reports on, the assessment of compliance made by the Custodian and
      delivered pursuant to the preceding paragraph. Such attestation shall be
      in accordance with Rules 1-02(a)(3) and 2-02(g) of Regulation S-X under
      the Securities Act and the Exchange Act. If requested by the Master
      Servicer or the Depositor, such report shall contain or be accompanied by
      a consent of such accounting firm to inclusion or incorporation of such
      report in the Depositor's Registration Statement on Form S-3 relating to
      the Certificates and the Trust's Form 10-K; and

            (iii) an assessment of compliance and accountants' attestation as
      described in paragraphs (i) and (ii) of this Section 4.1(a) with respect
      to each Subcontractor determined by the Custodian pursuant to Section 4.2
      to be "participating in the servicing function" within the meaning of Item
      1122 of Regulation AB.

            An assessment of compliance provided by a Subcontractor pursuant to
Section 4.1(a)(iii) need not address any elements of the Servicing Criteria
applicable to it other than those specified by the Custodian pursuant to Section
4.2.

            No later than 30 days following the end of each fiscal year for the
Trust for which a Form 10-K is required to be filed, the Custodian shall forward
to the Master Servicer the name of each Subcontractor engaged by it and what
Relevant Servicing Criteria will be addressed in the report on assessment of
compliance prepared by such Subcontractor. When the Custodian submits its
assessment to the Master Servicer, it will also at such time include the
assessment (and attestation pursuant to Section 4.1(a)(ii) hereof) of each
Subcontractor engaged by it.

            (b) Within five (5) calendar days after a Distribution Date, the
Custodian shall provide to the Master Servicer, to the extent known, in
EDGAR-compatible format, or in such other form as otherwise agreed upon by the
Master Servicer and the Custodian, the form and substance of any Additional Form
10-D Disclosure applicable to the Custodian, as indicated in the table in
Exhibit S to the Pooling and Servicing Agreement. The Custodian acknowledges
that the performance by the Master Servicer of its duties under Section 3.12(a)
of the Pooling and Servicing Agreement relating to the timely preparation and
filing of Form 10-D is contingent upon the Custodian strictly observing all
applicable deadlines in the performance of its duties under this Section 4.1(b).

            (c) No later than March 5 (with a 10 calendar day cure period, but
in no event later than March 15) of each year that the Trust is subject to the
Exchange Act reporting requirements, commencing in March 2008, the Custodian
shall provide to the Master Servicer, to the extent known, in EDGAR-compatible
format, or in such other form as otherwise agreed upon by the Master Servicer
and the Custodian, the form and substance of any Additional Form 10-K Disclosure
applicable to the Custodian, as indicated in the table in Exhibit T to the
Pooling and Servicing Agreement. The Custodian acknowledges that the performance
by the Master Servicer of its duties under Section 3.12(b) of the Pooling and
Servicing Agreement relating to the timely preparation and filing of Form 10-K
is contingent upon the Custodian strictly observing all applicable deadlines in
the performance of its duties under this Section 4.1(c).

            (d) For so long as the Trust is subject to the Exchange Act
reporting requirements, no later than the end of business on the second Business
Day after the occurrence of a Reportable Event applicable to the Custodian, the
Custodian shall provide to the Master Servicer, to the extent known, in
EDGAR-compatible format, or in such other form as otherwise agreed upon by the
Master Servicer and the Custodian, the form and substance of any Form 8-K
Disclosure Information applicable to the Custodian, as indicated in the table in
Exhibit U to the Pooling and Servicing Agreement. The Custodian acknowledges
that the performance by the Master Servicer of its duties under Section 3.12(c)
of the Pooling and Servicing Agreement relating to the timely preparation and
filing of Form 8-K is contingent upon the Custodian strictly observing all
applicable deadlines in the performance of its duties under this Section 4.1(d).

            (e) The Custodian shall indemnify the Master Servicer, each
affiliate of the Master Servicer, the Trust, each broker dealer acting as
underwriter or initial purchaser of the Certificates, each Person who controls
any of such parties and the Depositor (within the meaning of Section 15 of the
Securities Act and Section 20 of the Exchange Act); and the respective present
and former directors, officers, employees and agents of each of the foregoing
and of the Depositor (each such entity, an "Indemnified Party"), and shall hold
each of them harmless from and against any losses, damages, penalties, fines,
forfeitures, legal fees and expenses and related costs, judgments, and any other
costs, fees and expenses that any of them may sustain arising out of or based
upon:

                  (i) (A) any untrue statement of a material fact contained or
            alleged to be contained in any information, report, certification,
            accountants' letter or other material provided in written or
            electronic form under this Section 4.1 or Section 4.2 hereof by or
            on behalf of the Custodian, or provided under Sections 4.1 or 4.2 by
            or on behalf of any Subcontractor (collectively, the "Custodian
            Information"), or (B) the omission or alleged omission to state in
            the Custodian Information a material fact required to be stated in
            the Custodian Information or necessary in order to make the
            statements therein, in the light of the circumstances under which
            they were made, not misleading; provided, by way of clarification,
            that clause (B) of this paragraph shall be construed solely by
            reference to the Custodian Information and not to any other
            information communicated in connection with a sale or purchase of
            securities, without regard to whether the Custodian Information or
            any portion thereof is presented together with or separately from
            such other information; or

                  (ii) any failure by the Custodian or any Subcontractor engaged
            by the Custodian to deliver any information, report, certification,
            accountants' letter or other material when and as required under
            Sections 4.1 or 4.2, including any failure by the Custodian to
            identify pursuant to Section 4.2 any Subcontractor "participating in
            the servicing function" within the meaning of Item 1122 of
            Regulation AB.

      In the case of any failure of performance described in clause (ii) of this
Section, the Custodian shall promptly reimburse the Master Servicer and the
Depositor, as applicable, for all costs reasonably incurred by each such party
in order to obtain the information, report, certification, accountants' letter
or other material not delivered as required by the Custodian or any
Subcontractor. If the indemnification provided for herein is unavailable to hold
harmless any Indemnified Party, then the Custodian agrees that it shall
contribute to the amount paid or payable by such Indemnified Party as a result
of the losses, claims, damages or liabilities of such Indemnified Party in such
proportion as is appropriate to reflect the relative fault of such Indemnified
Party on the one hand and the Custodian on the other in connection with a breach
of the Custodian's obligations under this Section 4.1 or the Custodian's
negligence, bad faith or willful misconduct in connection therewith.

            4.2 Engagement of Affiliates or Third-Parties. The Custodian shall
not hire or otherwise utilize the services of any Subcontractor to fulfill any
of the obligations of the Custodian as servicer under this Agreement unless the
Custodian complies with the provisions of this Section.

            It shall not be necessary for the Custodian to seek the consent of
the Master Servicer or the Depositor to the utilization of any Subcontractor.
The Custodian shall promptly upon request provide to the Master Servicer (or any
designee of Master Servicer) a written description (in form and substance
satisfactory to the Master Servicer and the Depositor) of the role and function
of each Subcontractor utilized by the Custodian, specifying (i) the identity of
each such Subcontractor, (ii) which (if any) of such Subcontractors are
"participating in the servicing function" within the meaning of Item 1122 of
Regulation AB, and (iii) which elements of the Servicing Criteria will be
addressed in assessments of compliance provided by each Subcontractor identified
pursuant to clause (ii) of this paragraph.

            As a condition to the utilization of any Subcontractor determined to
be "participating in the servicing function" within the meaning of Item 1122 of
Regulation AB, the Custodian shall cause any such Subcontractor used by the
Custodian, for the benefit of the Master Servicer and the Depositor to comply
with the provisions of Section 4.1 of this Agreement to the same extent as if
such Subcontractor were the Custodian. The Custodian shall be responsible for
obtaining from each Subcontractor and delivering to the Master Servicer any
assessment of compliance and attestation required to be delivered by such
Subcontractor under Section 4.1, in each case as and when required to be
delivered.

            4.3 Errors and Omissions Policy. The Custodian shall maintain, at
all times and at its own expense, an insurance policy covering losses caused by
errors or omissions of the Custodian and its personnel (such policy, an "Errors
and Omissions Policy"), which policy shall have such terms and coverage amounts
as are comparable to those of errors and omissions policies maintained by
custodians of mortgage loans generally.

            The Errors and Omissions Policy shall insure the Custodian, its
successors and assigns, against any losses resulting from negligence, errors or
omissions on the part of officers, employees or other persons acting on behalf
of the Custodian in the performance of its duties as Custodian pursuant to this
Agreement.

            The Custodian shall maintain in effect the Errors and Omissions
Policy at all times and the Errors and Omissions Policy may not be canceled,
permitted to lapse or otherwise terminated without the acquisition of comparable
coverage by the Custodian.

            4.4 Compliance with Article IV. If (a) the Custodian fails to comply
with its obligations to deliver any assessment of servicing compliance or
registered public accounting firm attestation reports required pursuant to this
Article IV or (b) any Subcontractor engaged by the Custodian fails to comply
with its obligations to deliver any assessment of servicing compliance or
registered public accounting firm attestation reports, the Master Servicer, may,
after consultation with the Depositor, remove the Custodian and appoint a
successor custodian by written instrument, in duplicate, one copy of which
instrument shall be delivered to the Custodian so removed and one copy to the
successor custodian.

                                    ARTICLE V

                            Miscellaneous Provisions

            Section 5.1. Notices. All notices, requests, consents and demands
and other communications required under this Agreement, or pursuant to any other
instrument or document delivered hereunder shall be in writing and, unless
otherwise specifically provided, may be delivered personally, by telegram or
telex, or by registered or certified mail, postage prepaid, return receipt
requested, at the addresses specified on the signature page hereof (unless
changed by the particular party whose address is stated herein by similar notice
in writing), in which case the notice will be deemed delivered when received.

            Section 5.2. Amendments. No modification or amendment of or
supplement to this Agreement shall be valid or effective unless the same is in
writing and signed by all parties hereto, and neither the Depositor, the Master
Servicer nor the Trustee shall enter into any amendment hereof except as
permitted by the Pooling and Servicing Agreement. The Trustee shall give prompt
written notice to the Custodian of any amendment or supplement to the Pooling
and Servicing Agreement and furnish the Custodian with written copies thereof.

            Section 5.3. Governing Law. This Agreement shall be deemed a
contract made under the laws of the State of New York and shall be construed and
enforced in accordance with and governed by the laws of the State of New York.

            Section 5.4. Recordation of Agreement. To the extent permitted by
applicable law, this Agreement is subject to recordation in all appropriate
public offices for real property records in all the counties or other comparable
jurisdictions in which any or all of the properties subject to the Mortgages are
situated, and in any other appropriate public recording office or elsewhere,
such recordation to be effected by the Master Servicer and at its expense on
direction by the Trustee, but only upon direction 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 5.5. 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 5.6. Regulation AB Compliance; Intent of Parties;
Reasonableness. The parties hereto acknowledge that interpretations of the
requirements of Regulation AB may change over time, whether due to interpretive
guidance provided by the Commission or its staff, consensus among participants
in the asset-backed securities markets, advice of counsel, or otherwise, and
agree to comply with requests made by the Depositor or the Master Servicer in
good faith for delivery of information under these provisions on the basis of
evolving interpretations of Regulation AB. In connection with the Trust, the
parties hereto shall cooperate fully with the Master Servicer and the Depositor
to deliver to the Master Servicer and/or the Depositor (including its assignees
or designees), any and all statements, reports, certifications, records and any
other information available to such party and reasonably necessary in the good
faith determination of the Depositor or the Master Servicer to permit the
Depositor or the Master Servicer to comply with the provisions of Regulation AB,
together with such disclosures reasonably believed by the Depositor or the
Master Servicer to be necessary in order to effect such compliance.
<PAGE>

            IN WITNESS WHEREOF, this Agreement is executed as of the date first
above written.

Address:                              HSBC BANK USA, NATIONAL ASSOCIATION,
                                         as Trustee

452 Fifth Avenue
New York, New York 10018              By:
                                          -------------------------------------
                                      Name:  Alexander Pabon
                                      Title: Vice President

Address:                              WELLS FARGO ASSET SECURITIES CORPORATION,
                                         as Depositor

5325 Spectrum Drive
Frederick, Maryland 21703             By:
                                          -------------------------------------
                                      Name:  Bradley A. Davis
                                      Title: Vice President

Address:                              WELLS FARGO BANK, N.A.,
                                         as Master Servicer

9062 Old Annapolis Road
Columbia, Maryland 21045              By:
                                          -------------------------------------
                                      Name:  Christopher Furlow
                                      Title: Assistant Vice President

Address:                              WELLS FARGO BANK, N.A.,
                                         as Custodian

1015 10th Avenue South East
Minneapolis, Minnesota 55414          By:
                                          -------------------------------------
                                          Name:  Mary B. Hogan
                                          Title: Vice President
<PAGE>

STATE OF MARYLAND       )
                        ss.:
COUNTY OF FREDERICK     )

            On this 29th day of November, 2007, before me, a notary public in
and for the State of Maryland, personally appeared Bradley A. Davis, known to me
who, being by me duly sworn, did depose and say that he is a Vice President of
Wells Fargo Asset Securities Corporation, a Delaware corporation, one of the
parties that executed the foregoing instrument; and that he signed his name
thereto by order of the Board of Directors of said corporation.

_________________________
Notary Public

[NOTARIAL SEAL]
<PAGE>

STATE OF MARYLAND      )
                       ss.:
COUNTY OF HOWARD       )

            On this 29th day of November, 2007, before me, the undersigned
officer, personally appeared Christopher Furlow, and acknowledged to me to be an
Assistant Vice President of Wells Fargo Bank, National Association, and that as
such officer, being duly authorized to do so pursuant to such entity's by-laws
or a resolution of its board of directors, executed and acknowledged the
foregoing instrument for the purposes therein contained, by signing the name of
such entity by himself as such officer as his free and voluntary act and deed
and the free and voluntary act and deed and the free and voluntary act and deed
of said entity.

            IN WITNESS WHEREOF, I hereunto set my hand and official seal.

_________________________
Notary Public

[NOTARIAL SEAL]
<PAGE>

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

            On this 29th day of November, 2007, before me, a notary public in
and for the State of New York, personally appeared Alexander Pabon, known to me
who, being by me duly sworn, did depose and say that he resides in
_________________________, New York; that he is a Vice President of HSBC Bank
USA, National Association, a national banking association, one of the parties
that executed the foregoing instrument; and that he signed his name thereto by
order of the Board of Directors of said association.

_________________________
Notary Public

[NOTARIAL SEAL]
<PAGE>

STATE OF MINNESOTA     )
                       ss.:
COUNTY OF HENNEPIN     )

            On this 29th day of November, 2007, before me, a notary public in
and for the State of Minnesota, personally appeared Mary B. Hogan, known to me
who, being by me duly sworn, did depose and say that she is a Vice President of
Wells Fargo Bank, N.A., a national banking association, one of the parties that
executed the foregoing instrument; and that she signed her name thereto by order
of the Board of Directors of said association.

_________________________
Notary Public

[NOTARIAL SEAL]

<PAGE>

                                   EXHIBIT F

                Addresses for Requesting Mortgage Loan Schedule

In the case of the Depositor:

Wells Fargo Asset Securities Corporation
5325 Spectrum Drive
Frederick, Maryland 21703
Attention: Vice President - Structured Finance

In the case of the Master Servicer:

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, Maryland 21045-1951
Attention: Corporate Trust Services - WFMBS 2007-AR8

<PAGE>

                                    EXHIBIT G

                        REQUEST FOR RELEASE OF DOCUMENTS

To:   Wells Fargo Bank, N.A.
      1015 10th Avenue S.E.
      Minneapolis., MN  55414
      Attn:  ________________

Re:   Custodial Agreement, dated as of November 29, 2007, among HSBC Bank USA,
      National Association, as Trustee, Wells Fargo Asset Securities
      Corporation, as Depositor, Wells Fargo Bank, N.A., as Master Servicer, and
      Wells Fargo Bank, N.A., as Custodian, relating to the Wells Fargo Asset
      Securities Corporation; Mortgage Pass-Through Certificates, Series
      2007-AR8.
      --------------------------------------------------------------------------

            In connection with the administration of the Mortgage Loans held by
you as Custodian for the Trust Estate pursuant to the above-captioned Custodial
Agreement, we request the release, and hereby acknowledge receipt, of the
Custodian's Owner Mortgage Loan File for the Mortgage Loan described below, for
the reason indicated.

                              Mortgage Loan Number:
                              ---------------------

                       Mortgagor Name, Address & Zip Code:
                       -----------------------------------

               Reason for Requesting Documents (check one):

               _______       1.     Mortgage Paid in Full

               _______       2.     Foreclosure

               _______       3.     Substitution

               _______       4.     Other Liquidation (Repurchases, etc.)

               _______       5.     Nonliquidation

               Reason: __________________________________

               By:_______________________________________
                    (authorized signer)

               Issuer:_____________________________________

               Address:___________________________________

                       ___________________________________

               Date:________________________________________

                                    Custodian
                                    ---------

Wells Fargo Bank, N.A.

               Please acknowledge the execution of the above request by your
signature and date below:

------------------------------------               -----------------
Signature                                          Date

Documents returned to Custodian:

------------------------------------               -----------------
Custodian                                          Date

<PAGE>

                                    EXHIBIT H

                                             AFFIDAVIT PURSUANT TO SECTION
                                             860E(e)(4) OF THE INTERNAL REVENUE
                                             CODE OF 1986, AS AMENDED, AND FOR
                                             NON-ERISA INVESTORS

STATE OF                     )
                             )   ss.:
COUNTY OF                    )

                [NAME OF OFFICER], being first duly sworn, deposes and says:

               1. That he is [Title of Officer] of [Name of Purchaser] (the
"Purchaser"), a [description of type of entity] duly organized and existing
under the laws of the [State of ] [United States], on behalf of which he makes
this affidavit.

               2. That the Purchaser's Taxpayer Identification Number is [ ].

               3. That the Purchaser is not a "disqualified organization" within
the meaning of Section 860E(e)(5),of the Internal Revenue Code of 1986, as
amended (the "Code"), or an ERISA Prohibited Holder, and will not be a
"disqualified organization" or an ERISA Prohibited Holder, as of [date of
transfer], and that the Purchaser is not acquiring Wells Fargo Asset Securities
Corporation Mortgage Pass-Through Certificates, Series 2007-AR8, Class A-R
Certificate (the "Residual Certificate") for the account of, or as agent
(including a broker, nominee, or other middleman) for, any person or entity from
which it has not received an affidavit substantially in the form of this
affidavit. For these purposes, a "disqualified organization" means the United
States, any state or political subdivision thereof, any foreign government, any
international organization, any agency or instrumentality of any of the
foregoing (other than an instrumentality if all of its activities are subject to
tax and a majority of its board of directors is not selected by such
governmental entity), any cooperative organization furnishing electric energy or
providing telephone service to persons in rural areas as described in Code
Section 1381(a)(2)(C), or any organization (other than a farmers' cooperative
described in Code Section 521) that is exempt from taxation under the Code
unless such organization is subject to the tax on unrelated business income
imposed by Code Section 511. For these purposes, an "ERISA Prohibited Holder"
means an employee benefit plan or other retirement arrangement subject to Title
I of the Employee Retirement Income Security Act of 1974, as amended ("ERISA"),
or Code Section 4975 or a governmental plan, as defined in Section 3(32) of
ERISA, subject to any federal, state or local law which is, to a material
extent, similar to the foregoing provisions of ERISA or the Code (collectively,
a "Plan") or a Person acting on behalf of or investing the assets of such a
Plan.

               4. That the Purchaser historically has paid its debts as they
have come due and intends to pay its debts as they come due in the future and
the Purchaser intends to pay taxes associated with holding the Residual
Certificate as they become due.

               5. That the Purchaser understands that it may incur tax
liabilities with respect to the Residual Certificate in excess of cash flows
generated by the Residual Certificate.

               6. That the Purchaser will not transfer the Residual Certificate
to any person or entity from which the Purchaser has not received an affidavit
substantially in the form of this affidavit and as to which the Purchaser has
actual knowledge that the requirements set forth in paragraph 3, 4 or 10 hereof
are not satisfied or that the Purchaser has reason to know does not satisfy the
requirements set forth in paragraph 4 hereof.

               7. That the Purchaser is aware that the Residual Certificate may
be a "noneconomic residual interest" within the meaning of Treasury regulations
promulgated pursuant to the Code and that the transferor of a noneconomic
residual interest will remain liable for any taxes due with respect to the
income on such residual interest, unless no significant purpose of the transfer
was to impede the assessment or collection of tax.

               8. That the Purchaser will not cause income from the Residual
Certificate to be attributable to a foreign permanent establishment or fixed
base, within the meaning of an applicable income tax treaty, of the Purchaser or
any other person.

               9. That, if the Purchaser is purchasing the Residual Certificate
in a transfer intended to meet the safe harbor provisions of Treasury
Regulations Sections 1.860E-1(c), the Purchaser has completed and attached
Attachment A hereto.

               10. That the Purchaser (i) is a U.S. Person or (ii) is a person
other than a U.S. Person (a "Non-U.S. Person") that holds the Residual
Certificate in connection with the conduct of a trade or business within the
United States and has furnished the transferor and the Master Servicer with an
effective Internal Revenue Service Form W-8ECI or successor form at the time and
in the manner required by the Code or (iii) is a Non-U.S. Person that has
delivered to both the transferor and the Master Servicer an opinion of a
nationally recognized tax counsel to the effect that the transfer of the
Residual Certificate to it is in accordance with the requirements of the Code
and the regulations promulgated thereunder and that such transfer of the
Residual Certificate will not be disregarded for federal income tax purposes.
"U.S. Person" means a citizen or resident of the United States, a corporation or
partnership (unless, in the case of a partnership, Treasury regulations are
adopted that provide otherwise) created or organized in or under the laws of the
United States, any state thereof or the District of Columbia, including an
entity treated as a corporation or partnership for federal income tax purposes,
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 such trust, and one or
more such U.S. Persons have the authority to control all substantial decisions
of such trust (or, to the extent provided in applicable Treasury regulations,
certain trusts in existence on August 20, 1996 which are eligible to elect to be
treated as U.S. Persons).

               11. That the Purchaser agrees to such amendments of the Pooling
and Servicing Agreement as may be required to further effectuate the
restrictions on transfer of the Residual Certificate to such a "disqualified
organization," an agent thereof, an ERISA Prohibited Holder or a person that
does not satisfy the requirements of paragraph 4, paragraph 5 and paragraph 10
hereof.

               12. That the Purchaser consents to the designation of the Master
Servicer as its agent to act as "tax matters person" of the REMIC pursuant to
Section 8.13 of the Pooling and Servicing Agreement, and if such designation is
not permitted by the Code and applicable law, to act as tax matters person if
requested to do so.

<PAGE>

               IN WITNESS WHEREOF, the Purchaser has caused this instrument to
be executed on its behalf, pursuant to authority of its Board of Directors, by
its [Title of Officer] this ___ day of , 20__.

                                  [NAME OF PURCHASER]

                                 By: ___________________________________________
                                     [Name of Officer]
                                     [Title of Officer]

               Personally appeared before me the above-named [Name of Officer],
known or proved to me to be the same person who executed the foregoing
instrument and to be the [Title of Officer], of the Purchaser, and acknowledged
to me that he [she] executed the same as his [her] free act and deed and the
free act and deed of the Purchaser.

               Subscribed and sworn before me this __ day of           , 20__.

____________________________________________
Notary Public

COUNTY OF____________________

STATE OF_____________________

My commission expires the __ day of __________, 20__.

<PAGE>

                                  ATTACHMENT A

                                       to

            AFFIDAVIT PURSUANT TO SECTION 860E(e)(4) OF THE INTERNAL
          REVENUE CODE OF 1986, AS AMENDED, AND FOR NON-ERISA INVESTORS

Check the appropriate box:

[ ]     The consideration paid to the Purchaser to acquire the Residual
        Certificate equals or exceeds the excess of (a) the present value of the
        anticipated tax liabilities over (b) the present value of the
        anticipated savings associated with holding such Certificate, in each
        case calculated in accordance with U.S. Treasury Regulations Sections
        1.860E-1(c)(7) and (8), computing present values using a discount rate
        equal to the short-term Federal rate prescribed by Section 1274(d) of
        the Code and the compounding period used by the Purchaser.

                                       OR

[ ]     The transfer of the Residual Certificate complies with U.S. Treasury
        Regulations Sections 1.860E-1(c)(5) and (6) and, accordingly:

        (i)    the Purchaser is an "eligible corporation," as defined in U.S.
               Treasury Regulations Section 1.860E-1(c)(6)(i), as to which
               income from Residual Certificate will only be taxed in the United
               States;

        (ii)   at the time of the transfer, and at the close of the Purchaser's
               two fiscal years preceding the year of the transfer, the
               Purchaser had gross assets for financial reporting purposes
               (excluding any obligation of a person related to the Purchaser
               within the meaning of U.S. Treasury Regulations Section
               1.860E-1(c)(6)(ii)) in excess of $100 million and net assets in
               excess of $10 million;

        (iii)  the Purchaser will transfer the Residual Certificate only to
               another "eligible corporation," as defined in U.S. Treasury
               Regulations Section 1.860E-1(c)(6)(i), in a transaction that
               satisfies the requirements of Sections 1.860E-1(c)(4)(i), (ii)
               and (iii) and Section 1.860E-1(c)(5) of the U.S. Treasury
               Regulations;

        (iv)   the Purchaser has determined the consideration paid to it to
               acquire the Residual Certificate based on reasonable market
               assumptions (including, but not limited to, borrowing and
               investment rates, prepayment and loss assumptions, expense and
               reinvestment assumptions, tax rates and other factors specific to
               the Purchaser) that it has determined in good faith; and

        (v)    in the event of any transfer of the Residual Certificate by the
               Purchaser, the Purchaser will require its transferee to complete
               a representation in the form of this Attachment A as a condition
               of the transferee's purchase of the Residual Certificate.

<PAGE>

                                    EXHIBIT I

                 Letter from Transferor of Residual Certificate

                                     [Date]

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, Maryland 21045-1951
Attn: Corporate Trust Services WFMBS 2007-AR8

      Re: Wells Fargo Asset Securities Corporation,
          Series 2007-AR8, Class A-R
          -----------------------------------------

Ladies and Gentlemen:

               [Transferor] has reviewed the attached affidavit of [Transferee],
and has no actual knowledge that such affidavit is not true and has no reason to
know that the information contained in paragraph 4 thereof is not true.

                                               Very truly yours,

                                               [Transferor]

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

<PAGE>

                                    EXHIBIT J

                    WELLS FARGO ASSET SECURITIES CORPORATION

                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 2007-AR8
                       CLASS [B-4][B-5][B-6] CERTIFICATES

                               TRANSFEREE'S LETTER

                                                      ----------------- --, ----

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, Maryland 21045-1951
Attn: Corporate Trust Services WFMBS 2007-AR8

Wells Fargo Asset Securities Corporation
5325 Spectrum Drive
Frederick, Maryland 21703

               The undersigned (the "Purchaser") proposes to purchase Wells
Fargo Asset Securities Corporation Mortgage Pass-Through Certificates, Series
2007-AR8, Class [B-4][B-5][B-6] Certificates (the "Class [B-4][B-5][B-6]
Certificates") in the principal amount of $___________. In doing so, the
Purchaser hereby acknowledges and agrees as follows:

               Section 1. Definitions. Each capitalized term used herein and not
otherwise defined herein shall have the meaning ascribed to it in the Pooling
and Servicing Agreement, dated as of November 29, 2007 (the "Pooling and
Servicing Agreement") among Wells Fargo Asset Securities Corporation, as
depositor (the "Depositor"), Wells Fargo Bank, N.A., as master servicer (the
"Master Servicer") and HSBC Bank USA, National Association, as trustee (the
"Trustee"), of Wells Fargo Asset Securities Corporation Mortgage Pass-Through
Certificates, Series 2007-AR8.

               Section 2. Representations and Warranties of the Purchaser. In
connection with the proposed transfer, the Purchaser represents and warrants to
the Depositor, the Master Servicer and the Trustee that:

               (a) The Purchaser is duly organized, validly existing and in good
standing under the laws of the jurisdiction in which the Purchaser is organized,
is authorized to invest in the Class [B-4][B-5][B-6] Certificates, and to enter
into this Agreement, and duly executed and delivered this Agreement.

               (b) The Purchaser is acquiring the Class [B-4][B-5][B-6]
Certificates for its own account as principal and not with a view to the
distribution thereof, in whole or in part.

               (c) The Purchaser is a "Qualified Institutional Buyer" within the
meaning of Rule 144A of the Act.

               (d) The Purchaser confirms that (a) it has received and reviewed
a copy of the Private Placement Memorandum dated ______ __, ____, relating to
the Class [B-4][B-5][B-6] Certificates and reviewed, to the extent it deemed
appropriate, the documents attached thereto or incorporated by reference
therein, (b) it has had the opportunity to ask questions of, and receive answers
from the Depositor concerning the Class [B-4][B-5][B-6] Certificates and all
matters relating thereto, and obtain any additional information (including
documents) relevant to its decision to purchase the Class [B-4][B-5][B-6]
Certificates that the Depositor possesses or can possess without unreasonable
effort or expense and (c) it has undertaken its own independent analysis of the
investment in the Class [B-4][B-5][B-6] Certificates. The Purchaser will not use
or disclose any information it receives in connection with its purchase of the
Class [B-4][B-5][B-6] Certificates other than in connection with a subsequent
sale of Class [B-4][B-5][B-6] Certificates.

               (e) Either (i) the Purchaser is not an employee benefit plan or
other retirement arrangement subject to Title I of the Employee Retirement
Income Security Act of 1974, as amended, ("ERISA"), or Section 4975 of the
Internal Revenue Code of 1986, as amended (the "Code"), or a governmental plan,
as defined in Section 3(32) of ERISA subject to any federal, state or local law
("Similar Law") which is, to a material extent, similar to the foregoing
provisions of ERISA or the Code (collectively, a "Plan"), an agent acting on
behalf of a Plan, or a person utilizing the assets of a Plan or (ii) if the
Purchaser is an insurance company, (A) the source of funds used to purchase the
Class [B-4][B-5][B-6] Certificate is an "insurance company general account" (as
such term is defined in Section V(e) of Prohibited Transaction Class Exemption
95-60 ("PTE 95-60"), 60 Fed. Reg. 35925 (July 12, 1995), (B) there is no Plan
with respect to which the amount of such general account's reserves and
liabilities for the contract(s) held by or on behalf of such Plan and all other
Plans maintained by the same employer (or affiliate thereof as defined in
Section V(a)(1) of PTE 95-60) or by the same employee organization exceeds 10%
of the total of all reserves and liabilities of such general account (as such
amounts are determined under Section I(a) of PTE 95-60) at the date of
acquisition and (C) the purchase and holding of such Class [B-4][B-5][B-6]
Certificates are covered by Sections I and III of PTE 95-60 or (iii) the
Purchaser has provided (a) a "Benefit Plan Opinion" satisfactory to the
Depositor and the Master Servicer of the Trust Estate and (b) such other
opinions of counsel, officers' certificates and agreements as the Depositor or
the Master Servicer may have required. A Benefit Plan Opinion is an opinion of
counsel to the effect that the proposed transfer will not constitute or result
in a non-exempt prohibited transaction within the meaning of ERISA, Section 4975
of the Code or Similar Law and will not subject the Depositor or the Master
Servicer to any obligation in addition to those undertaken in the Pooling and
Servicing Agreement (including any liability for civil penalties or excise taxes
imposed pursuant to ERISA, Section 4975 of the Code or Similar Law).

               (f) If the Purchaser is a depository institution subject to the
jurisdiction of the Office of the Comptroller of the Currency ("OCC"), the Board
of Governors of the Federal Reserve System ("FRB"), the Federal Deposit
Insurance Corporation ("FDIC"), the Office of Thrift Supervision ("OTS") or the
National Credit Union Administration ("NCUA"), the Purchaser has reviewed the
"Supervisory Policy Statement on Securities Activities" dated January 28, 1992
of the Federal Financial Institutions Examination Council and the April 15, 1994
Interim Revision thereto as adopted by the OCC, FRB, FDIC, OTS and NCUA (with
modifications as applicable), as appropriate, other applicable investment
authority, rules, supervisory policies and guidelines of these agencies and, to
the extent appropriate, state banking authorities and has concluded that its
purchase of the Class [B-4][B-5][B-6] Certificates is in compliance therewith.

               Section 3. Transfer of Class [B-4][B-5][B-6] Certificates.

               (a) The Purchaser understands that the Class [B-4][B-5][B-6]
Certificates have not been registered under the Securities Act of 1933 (the
"Act") or any state securities laws and that no transfer may be made unless the
Class [B-4][B-5][B-6] Certificates are registered under the Act and applicable
state law or unless an exemption from registration is available. The Purchaser
further understands that neither the Depositor nor the Master Servicer is under
any obligation to register the Class [B-4][B-5][B-6] Certificates or make an
exemption available. Any such Certificateholder desiring to effect such transfer
shall, and does hereby agree to, indemnify the Trustee, the Master Servicer, any
Paying Agent and the Depositor 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.

               (b) No transfer of a Class [B-4][B-5][B-6] Certificate shall be
made unless the transferee provides the Depositor and the Master Servicer with a
Transferee's Letter, substantially in the form of this Agreement.

               (c) The Purchaser acknowledges that its Class [B-4][B-5][B-6]
Certificates bear a legend setting forth the applicable restrictions on
transfer.

<PAGE>

               IN WITNESS WHEREOF, the undersigned has caused this Agreement to
be validly executed by its duly authorized representative as of the day and the
year first above written.

                                               [PURCHASER]

                                               By: _____________________________

                                               Its: ____________________________

<PAGE>

                                    EXHIBIT K

                           LIST OF RECORDATION STATES

                                     Florida

                                    Maryland

<PAGE>

                                    EXHIBIT L

                              SERVICING AGREEMENTS

                      Wells Fargo Bank Servicing Agreement

 [Included as Exhibit 10.1 to the Current Report on Form 8-K pursuant to which
                 this Pooling and Servicing Agreement is filed]

<PAGE>

                                    EXHIBIT M

                      [FORM OF SPECIAL SERVICING AGREEMENT]

                 SPECIAL SERVICING AND COLLATERAL FUND AGREEMENT
                 -----------------------------------------------

        This SPECIAL SERVICING AND COLLATERAL FUND AGREEMENT (the "Agreement")
is made and entered into as of [ ], between Wells Fargo Bank, N.A. (the
"Company" or the "Master Servicer") and [ ] (the "Purchaser").

                              PRELIMINARY STATEMENT

        The Purchaser is the holder of the entire interest in Wells Fargo Asset
Securities Corporation Mortgage Pass-Through Certificates, Series [ ], Class [ ]
(the "Class B Certificates"), which are the Lowest Priority Certificates (as
defined below) outstanding with respect to such Series. The Class B Certificates
were issued pursuant to a Pooling and Servicing Agreement dated as of [ ] among
Wells Fargo Asset Securities Corporation, as depositor (the "Depositor"), Wells
Fargo Bank, N.A., as Master Servicer, and HSBC Bank USA, National Association,
as Trustee.

        In connection with the ownership by the Purchaser of the Lowest Priority
Certificates, the Purchaser and the Company have agreed that (i) the Purchaser,
for so long as it owns 100% of the Lowest Priority Certificates, will have the
unilateral right to control foreclosure decisions with respect to delinquent
mortgage loans and (ii) the Company will provide to the Purchaser certain
information with respect to the Mortgage Loans;

        The parties hereto have agreed that the Company will cause, to the
extent that the Company as Master Servicer is granted such authority in the
related Servicing Agreements, the related servicers (each a related "Servicer"),
which service the Mortgage Loans which comprise the Trust Estate related to the
above referenced series under the related servicing agreements (each a related
"Servicing Agreement"), to engage in certain special servicing procedures
relating to foreclosures for the benefit of the Purchaser, and that the
Purchaser will deposit funds in a collateral fund to cover any losses
attributable to such procedures as well as all advances and costs in connection
therewith, as set forth herein.

        In consideration of the mutual agreements herein contained, the receipt
and sufficiency of which are hereby acknowledged, the Company and the Purchaser
agree that the following provisions shall become effective and shall be binding
on and enforceable by the Company and the Purchaser:

<PAGE>

                                    ARTICLE I

                                   DEFINITIONS

            Section 1.02. Defined Terms.

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

        Business Day: Any day other than (i) a Saturday or a Sunday or (ii) a
day on which banking institutions in the State of New York are required or
authorized by law or executive order to be closed.

        Collateral Fund: The fund established and maintained pursuant to Section
3.01 hereof.

        Collateral Fund Permitted Investments: Either (i) obligations of, or
obligations fully guaranteed as to 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) a money market fund
rated in the highest rating category by a nationally recognized rating agency
selected by the Company, (iii) cash, (iv) mortgage pass-through certificates
issued or guaranteed by Government National Mortgage Association, FNMA or FHLMC,
(v) commercial paper (including both non-interest-bearing discount obligations
and interest-bearing obligations payable on demand or on a specified date), the
issuer of which may be an affiliate of the Company, having at the time of such
investment a rating of at least F-1 by Fitch Ratings ("Fitch") or at least P-1
by Moody's Investors Service, Inc. ("Moody's") or (vi) demand and time deposits
in, certificates of deposit of, any depository institution or trust company
(which may be an affiliate of the Company) incorporated under the laws of the
United States of America or any state thereof and subject to supervision and
examination by federal and/or state banking authorities, so long as at the time
of such investment either (x) the long-term debt obligations of such depository
institution or trust company have a rating of at least AA by Fitch or Aa2 by
Moody's, (y) the certificate of deposit or other unsecured short-term debt
obligations of such depository institution or trust company have a rating of at
least F-1 by Fitch or P-1 by Moody's or (z) the depository institution or trust
company is one that is acceptable to either Fitch or Moody's and, for each of
the preceding clauses (i), (iv), (v) and (vi), the maturity thereof shall be not
later than the earlier to occur of (A) 30 days from the date of the related
investment and (B) the next succeeding Distribution Date as defined in the
related Pooling and Servicing Agreement.

        Commencement of Foreclosure: The first official action required under
local law in order to commence foreclosure proceedings or to schedule a
trustee's sale under a deed of trust, including (i) in the case of a mortgage,
any filing or service of process necessary to commence an action to foreclose,
or (ii) in the case of a deed of trust, posting, the publishing, filing or
delivery of a notice of sale, but not including in either case (x) any notice of
default, notice of intent to foreclose or sell or any other action prerequisite
to the actions specified in (i) or (ii) above, (y) the acceptance of a
deed-in-lieu of foreclosure (whether in connection with a sale of the related
property or otherwise) or (z) initiation and completion of a short pay-off.

        Current Appraisal: With respect to any Mortgage Loan as to which the
Purchaser has made an Election to Delay Foreclosure, an appraisal of the related
Mortgaged Property obtained by the Purchaser at its own expense from an
independent appraiser (which shall not be an affiliate of the Purchaser)
acceptable to the Company as nearly contemporaneously as practicable to the time
of the Purchaser's election, prepared based on the Company's customary
requirements for such appraisals.

        Election to Delay Foreclosure: Any election by the Purchaser to delay
the Commencement of Foreclosure, made in accordance with Section 2.02(b).

        Election to Foreclose: Any election by the Purchaser to proceed with the
Commencement of Foreclosure, made in accordance with Section 2.03(a).

        Lowest Priority Certificates: The most subordinate class of certificates
issued under the Pooling and Servicing Agreement that is outstanding from time
to time. If the Lowest Priority Certificates are reduced to zero as a result of
losses or otherwise, and if the Purchaser at that time owns 100% of the most
subordinate class of certificates issued under the Pooling and Servicing
Agreement then remaining outstanding, then such most subordinate class remaining
outstanding shall thereafter be deemed to be the Lowest Priority Certificates
for all purposes of this Agreement.

        Monthly Advances: Principal and interest advances and servicing advances
including costs and expenses of foreclosure.

        Required Collateral Fund Balance: As of any date of determination, an
amount equal to the aggregate of all amounts previously required to be deposited
in the Collateral Fund pursuant to Section 2.02(d) (after adjustment for all
withdrawals and deposits pursuant to Section 2.02(e)) and Section 2.03(b) (after
adjustment for all withdrawals and deposits pursuant to Section 2.03(c)) and
Section 3.02 to be reduced by all withdrawals therefrom pursuant to Section
2.02(g) and Section 2.03(d).

            Section 1.03. Definitions Incorporated by Reference.

        All capitalized terms not otherwise defined in this Agreement shall have
the meanings assigned in the Pooling and Servicing Agreement.

<PAGE>

                                   ARTICLE II

                          SPECIAL SERVICING PROCEDURES

            Section 2.01. Reports and Notices.

            (a) In connection with the performance of its duties under the
Pooling and Servicing Agreement relating to the realization upon defaulted
Mortgage Loans, the Company as Master Servicer shall provide to the Purchaser
the following notices and reports:

        Within five Business Days after each Distribution Date (or included in
        or with the monthly statements to Certificateholders pursuant to the
        Pooling and Servicing Agreement), the Company shall provide to the
        Purchaser a report identifying all loans delinquent 30 days or more
        (including all loans in foreclosure, bankruptcy or "real estate owned"
        status) (each, a "Delinquency Report"). The Delinquency Report shall use
        the same methodology and calculations employed in the Company's standard
        servicing reports, indicating the number of Mortgage Loans that are (i)
        thirty days delinquent, (ii) sixty days delinquent, (iii) ninety days or
        more delinquent, (iv) in foreclosure, (v) in bankruptcy or (vi) real
        estate owned, and indicating for each such Mortgage Loan the loan
        number, the property address and the outstanding principal balance.

            (b) If requested by the Purchaser, the Company shall cause the
Servicer (to the extent that the Company as Master Servicer is granted such
authority in the related Servicing Agreement) to make its servicing personnel
available (during their normal business hours) to respond to reasonable
inquiries, by phone or in writing by facsimile, electronic, or overnight mail
transmission, by the Purchaser in connection with any Mortgage Loan (i)
identified in a report under Section 2.01 (a) (ii), (a) (iii), (a) (iv), (a) (v)
or (a) (vi); provided, that (1) the related Servicer shall only be required to
provide information that is readily accessible to its servicing personnel and
(2) the related Servicer shall respond within five Business Days orally or in
writing by facsimile transmission.

            (c) In addition to the foregoing, the Company shall cause the
Servicer (to the extent that the Company as Master Servicer is granted such
authority in the related Servicing Agreement) to provide to the Company (for
prompt transmission to the Purchaser) such information as the Purchaser may
reasonably request provided, however, that such information is consistent with
normal reporting practices, concerning each Mortgage Loan that is at least
ninety days delinquent and each Mortgage Loan which has become real estate
owned, through the final liquidation thereof; provided, that the related
Servicer shall only be required to provide information that is readily
accessible to its servicing personnel; provided, however, that the Purchaser
will reimburse the Company and the related Servicer for any out of pocket
expenses.

            Section 2.02. Purchaser's Election to Delay Foreclosure Proceedings.

            (a) The Purchaser shall be deemed to direct the Company to direct
(to the extent that the Company as Master Servicer is granted such authority in
the related Servicing Agreement) the related Servicer that in the event that the
Company does not receive written notice of the Purchaser's election pursuant to
subsection (b) below within 48 hours (exclusive of any intervening non-Business
Days) of transmission of the Delinquency Report provided by the Company under
Section 2.01 (a) (subject to extension as set forth in Section 2.02(b), the
related Servicer may proceed with the Commencement of Foreclosure in respect of
each Mortgage Loan reported under Section 2.01 (a)(ii) or 2.01 (a)(iii) in
accordance with its normal foreclosure policies without further notice to the
Purchaser. Any foreclosure that has been initiated may be discontinued (i)
without notice to the Purchaser if the Mortgage Loan has been brought current or
if a refinancing or prepayment occurs with respect to the Mortgage Loan
(including by means of a short payoff approved by the related Servicer) or (ii)
if the related Servicer has reached the terms of a forbearance agreement with
the borrower.

            (b) In connection with any Mortgage Loan reported in a Delinquency
Report under Section 2.01(a)(ii) or 2.01 (a)(iii), the Purchaser may elect to
instruct the Company to cause, to the extent that the Company as Master Servicer
is granted such authority in the related Servicing Agreement, the related
Servicer to delay the Commencement of Foreclosure until such time as the
Purchaser determines that the related Servicer may proceed with the Commencement
of Foreclosure. Such election must be evidenced by written notice received
within 48 hours (exclusive of any intervening non-Business Days) of transmission
of the Delinquency Report provided by the Company under Section 2.01(a). Such 48
hour period shall be extended for no longer than an additional four Business
Days after the receipt of the information if the Purchaser requests additional
information related to such foreclosure; provided, however, that the Purchaser
will have at least one Business Day to respond to any requested additional
information. Any such additional information shall be provided only to the
extent it is obtainable by the related Servicer from existing reports,
certificates or statements or is otherwise readily accessible to its servicing
personnel. The Purchaser agrees that it has no right to deal with the mortgagor
during such period. However, if such servicing activities include acceptance of
a deed-in-lieu of foreclosure or short payoff, the Purchaser will be notified
and given two Business Days to respond.

            (c) With respect to any Mortgage Loan as to which the Purchaser has
made an Election to Delay Foreclosure, the Purchaser shall obtain a Current
Appraisal as soon as practicable, but in no event more than 15 Business Days
thereafter, and shall provide the Company with a copy of such Current Appraisal.

            (d) Within two Business Days of making any Election to Delay
Foreclosure, the Purchaser shall remit by wire transfer to the Company, for
deposit in the Collateral Fund, an amount, as calculated by the Company, equal
to the sum of (i) 125% of the greater of the unpaid principal balance of the
Mortgage Loan and the value shown in the Current Appraisal referred to in
subsection (c) above (or, if such Current Appraisal has not yet been obtained,
the Company's estimate thereof, in which case the required deposit under this
subsection shall be adjusted upon obtaining such Current Appraisal), and (ii)
three months' interest on the Mortgage Loan at the applicable Mortgage Interest
Rate. If any Election to Delay Foreclosure extends for a period in excess of
three months (such excess period being referred to herein as the "Excess
Period"), within two Business Days the Purchaser shall remit by wire transfer in
advance to the Company for deposit in the Collateral Fund the amount of each
additional month's interest, as calculated by the Company, equal to interest on
the Mortgage Loan at the applicable Mortgage Interest Rate for the Excess
Period. The terms of this Agreement will no longer apply to the servicing of any
Mortgage Loan upon the failure of the Purchaser to deposit any of the above
amounts relating to the Mortgage Loan within two Business Days of the Election
to Delay Foreclosure or within two Business Days of the commencement of the
Excess Period subject to Section 3.01.

            (e) With respect to any Mortgage Loan as to which the Purchaser has
made an Election to Delay Foreclosure, the Company may withdraw from the
Collateral Fund from time to time amounts necessary to reimburse the related
Servicer for all related Monthly Advances and Liquidation Expenses thereafter
made by such Servicer in accordance with the Pooling and Servicing Agreement and
the related Servicing Agreement. To the extent that the amount of any such
Liquidation Expenses is determined by the Company based on estimated costs, and
the actual costs are subsequently determined to be higher, the Company may
withdraw the additional amount from the Collateral Fund. In the event that the
Mortgage Loan is brought current by the mortgagor and the foreclosure action is
discontinued, the amounts so withdrawn from the Collateral Fund shall be
redeposited if and to the extent that reimbursement therefor from amounts paid
by the mortgagor is not prohibited pursuant to the Pooling and Servicing
Agreement or the related Servicing Agreement, applicable law or the related
mortgage note. Except as provided in the preceding sentence, amounts withdrawn
from the Collateral Fund to cover Monthly Advances and Liquidation Expenses
shall not be redeposited therein or otherwise reimbursed to the Purchaser. If
and when any such Mortgage Loan is brought current by the mortgagor, all amounts
remaining in the Collateral Fund in respect of such Mortgage Loan (after
adjustment for all permitted withdrawals and deposits pursuant to this
subsection) shall be released to the Purchaser.

            (f) With respect to any Mortgage Loan as to which the Purchaser has
made an Election to Delay Foreclosure, the related Servicer shall continue to
service the Mortgage Loan in accordance with its customary procedures (other
than the delay in Commencement of Foreclosure as provided herein). If and when
the Purchaser shall notify the Company that it believes that it is appropriate
to do so, the related Servicer may proceed with the Commencement of Foreclosure.
In any event, if the Mortgage Loan is not brought current by the mortgagor by
the time the loan becomes 6 months delinquent, the Purchaser's election shall no
longer be effective and at the Purchaser's option, either (i) the Purchaser
shall purchase the Mortgage Loan from the related Trust Estate at a purchase
price equal to the sum of (x) accrued and unpaid interest on the Mortgage Loan
at the applicable Mortgage Interest Rate through the last day of the month of
repurchase, (y) 100% of the unpaid principal balance of the Mortgage Loan as of
such purchase date and (z) any additional amount needed to reimburse any
unreimbursed related Periodic Advance or other servicing advances made in
respect of such Mortgage Loan, to be paid by (A) applying any balance in the
Collateral Fund to such purchase price, and (B) to the extent of any deficiency,
by wire transfer of immediately available funds from the Purchaser to the
Company for deposit in the related Certificate Account; or (ii) the related
Servicer shall proceed with the Commencement of Foreclosure. In the event that
the Purchaser purchases any such Mortgage Loan, the Servicer shall continue to
service the Mortgage Loan for the Purchaser pursuant to the applicable Servicing
Agreement.

            (g) Upon the occurrence of a liquidation with respect to any
Mortgage Loan as to which the Purchaser made an Election to Delay Foreclosure
and as to which the related Servicer proceeded with the Commencement of
Foreclosure in accordance with subsection (f) above, the Company shall calculate
the amount, if any, by which the value shown on the Current Appraisal obtained
under subsection (c) exceeds the actual sales price obtained for the related
Mortgaged Property (net of Liquidation Expenses and accrued interest related to
the extended foreclosure period), and the Company shall withdraw the amount of
such excess from the Collateral Fund, shall remit the same to the Trust Estate
and in its capacity as Master Servicer shall apply such amount as additional
Liquidation Proceeds pursuant to the Pooling and Servicing Agreement. After
making such withdrawal, all amounts remaining in the Collateral Fund in respect
of such Mortgage Loan (after adjustment for all permitted withdrawals and
deposits pursuant to this Agreement) shall be released to the Purchaser.

            Section 2.03. Purchaser's Election to Commence Foreclosure
Proceedings.

            (a) In connection with any Mortgage Loan identified in a Delinquency
Report under Section 2.01(a)(ii), the Purchaser, for so long as the Purchaser
owns 100% of the Lowest Priority Certificates, may elect to instruct the Company
to cause, to the extent that the Company as Master Servicer is granted such
authority in the related Servicing Agreement, the related Servicer to proceed
with the Commencement of Foreclosure as soon as practicable. Such election must
be evidenced by written notice received by the Company by 5:00 p.m., New York
City time, on the third Business Day following the delivery of such Delinquency
Report.

            (b) Within two Business Days of making any Election to Foreclose,
the Purchaser shall remit to the Company, for deposit in the Collateral Fund, an
amount, as calculated by the Company, equal to 125% of the current unpaid
principal balance of the Mortgage Loan and three months interest on the Mortgage
Loan at the applicable Mortgage Interest Rate. If and when any such Mortgage
Loan is brought current by the mortgagor, all amounts in the Collateral Fund in
respect of such Mortgage Loan (after adjustment for all permitted withdrawals
and deposits pursuant to this Agreement) shall be released to the Purchaser if
and to the extent that reimbursement therefor from amounts paid by the mortgagor
is not prohibited pursuant to the Pooling and Servicing Agreement or the related
Servicing Agreement, applicable law or the related mortgage note. The terms of
this Agreement will no longer apply to the servicing of any Mortgage Loan upon
the failure of the Purchaser to deposit the above amounts relating to the
Mortgage Loan within two Business Days of the Election to Foreclose subject to
Section 3.01.

            (c) With respect to any Mortgage Loan as to which the Purchaser has
made an Election to Foreclose, the related Servicer shall continue to service
the Mortgage Loan in accordance with its customary procedures (other than
Commencement of Foreclosure as provided herein). In connection therewith, the
Company shall have the same rights to make withdrawals for Monthly Advances and
Liquidations Expenses from the Collateral Fund as are provided under Section
2.02(e), and the Company shall make reimbursements thereto to the limited extent
provided under such subsection in accordance with its customary procedures. The
Company shall not be required to cause, to the extent that the Company as Master
Servicer is granted such authority in the related Servicing Agreement, the
related Servicer to proceed with the Commencement of Foreclosure if (i) the same
is stayed as a result of the mortgagor's bankruptcy or is otherwise barred by
applicable law, or to the extent that all legal conditions precedent thereto
have not yet been complied with, or (ii) the Company believes there is a breach
of representations or warranties by the Company, a Servicer, or the Depositor,
which may result in a repurchase or substitution of such Mortgage Loan, or (iii)
the Company or related Servicer reasonably believes the Mortgaged Property may
be contaminated with or affected by hazardous wastes or hazardous substances
(and, without limiting the related Servicer's right not to proceed with the
Commencement of Foreclosure, the Company supplies the Purchaser with information
supporting such belief). Any foreclosure that has been initiated may be
discontinued (x) without notice to the Purchaser if the Mortgage Loan has been
brought current or if a refinancing or prepayment occurs with respect to the
Mortgage Loan (including by means of a short payoff) or (y) if the related
Servicer has reached the terms of a forbearance agreement.

            (d) Upon the occurrence of a liquidation with respect to any
Mortgage Loan as to which the Purchaser made an Election to Foreclose and as to
which the related Servicer proceeded with the Commencement of Foreclosure in
accordance with subsection (c) above, the Company shall calculate the amount, if
any, by which the unpaid principal balance of the Mortgage Loan at the time of
liquidation (plus all unreimbursed interest and servicing advances and
Liquidation Expenses in connection therewith other than those paid from the
Collateral Fund) exceeds the actual sales price obtained for the related
Mortgaged Property, and the Company shall withdraw the amount of such excess
from the Collateral Fund, shall remit the same to the Trust Estate and in its
capacity as Master Servicer shall apply such amount as additional Liquidation
Proceeds pursuant to the Pooling and Servicing Agreement. After making such
withdrawal, all amounts remaining in the Collateral Fund (after adjustment for
all withdrawals and deposits pursuant to subsection (c) in respect of such
Mortgage Loan shall be released to the Purchaser.

            Section 2.04. Termination.

            (a) With respect to all Mortgage Loans included in the Trust Estate,
the Purchaser's right to make any Election to Delay Foreclosure or any Election
to Foreclose and the Company's obligations under Section 2.01 shall terminate
(i) at such time as the Principal Balance of the Class B Certificates has been
reduced to zero, (ii) if the greater of (x) 43% (or such lower or higher
percentage that represents the related Servicer's actual historical loss
experience with respect to the Mortgage Loans in the related pool as determined
by the Company) of the aggregate principal balance of all Mortgage Loans that
are in foreclosure or are more than 90 days delinquent on a contractual basis
and REO properties or (y) the aggregate amount that the Company estimates
through the normal servicing practices of the related Servicer will be required
to be withdrawn from the Collateral Fund with respect to Mortgage Loans as to
which the Purchaser has made an Election to Delay Foreclosure or an Election to
Foreclosure, exceeds (z) the then-current principal balance of the Class B
Certificates, (iii) upon any transfer by the Purchaser of any interest (other
than the minority interest therein, but only if the transferee provides written
acknowledgment to the Company of the Purchaser's right hereunder and that such
transferee will have no rights hereunder) in the Class B Certificates (whether
or not such transfer is registered under the Pooling and Servicing Agreement),
including any such transfer in connection with a termination of the Trust Estate
or (iv) upon any breach of the terms of this Agreement by the Purchaser.

            (b) Except as set forth in 2.04(a), this Agreement and the
respective rights, obligations and responsibilities of the Purchaser and the
Company hereunder shall terminate upon the later to occur of (i) the final
liquidation of the last Mortgage Loan as to which the Purchaser made any
Election to Delay Foreclosure or any Election to Foreclose and the withdrawal of
all remaining amounts in the Collateral Fund as provided herein and (ii) ten
Business Days' notice. The Purchaser's right to make an election pursuant to
Section 2.02 or Section 2.03 hereof with respect to a particular Mortgage Loan
shall terminate if the Purchaser fails to make any deposit required pursuant to
Section 2.02(d) or 2.03(b) or if the Purchaser fails to make any other deposit
to the Collateral Fund pursuant to this Agreement.

                                  ARTICLE III

                       COLLATERAL FUND; SECURITY INTEREST

            Section 3.01. Collateral Fund.

        Upon receipt from the Purchaser of the initial amount required to be
deposited in the Collateral Fund pursuant to Article II, the Company shall
establish and maintain with [ ] as a segregated account on its books and records
an account (the "Collateral Fund"), entitled "Wells Fargo Bank, N.A., as Master
Servicer, for the benefit of registered holders of Wells Fargo Asset Securities
Corporation Mortgage Pass-Through Certificates, Series [ ]." Amounts held in the
Collateral Fund shall continue to be the property of the Purchaser, subject to
the first priority security interest granted hereunder for the benefit of the
Certificateholders, until withdrawn from the Collateral Fund pursuant to Section
2.02 or 2.03 hereof. The Collateral Fund shall be an "outside reserve fund"
within the meaning of the REMIC Provisions, beneficially owned by the Purchaser
for federal income tax purposes. All income, gain, deduction or loss with
respect to the Collateral Fund shall be that of the Purchaser. All distributions
from the Trust Fund to the Collateral Fund shall be treated as distributed to
the Purchaser as the beneficial owner thereof.

        Upon the termination of this Agreement and the liquidation of all
Mortgage Loans as to which the Purchaser has made any Election to Delay
Foreclosure or any Election to Foreclose pursuant to Section 2.04 hereof, the
Company shall distribute or cause to be distributed to the Purchaser all amounts
remaining in the Collateral Fund (after adjustment for all deposits and
permitted withdrawals pursuant to this Agreement) together with any investment
earnings thereon. In the event the Purchaser has made any Election to Delay
Foreclosure or any Election to Foreclose, prior to any distribution to the
Purchaser of all amounts remaining in the Collateral Fund, funds in the
Collateral Fund shall be applied consistent with the terms of this Agreement.

            Section 3.02. Collateral Fund Permitted Investments.

        The Company shall, at the written direction of the Purchaser, invest the
funds in the Collateral Fund in Collateral Fund Permitted Investments. Such
direction shall not be changed more frequently than quarterly. In the absence of
any direction, the Company shall select such investments in accordance with the
definition of Collateral Fund Permitted Investments in its discretion. All
income and gain realized from any investment as well as any interest earned on
deposits in the Collateral Fund (net of any losses on such investments) and any
payments of principal made in respect of any Collateral Fund Permitted
Investment shall be deposited in the Collateral Fund upon receipt. All costs and
realized losses associated with the purchase and sale of Collateral Fund
Permitted Investments shall be borne by the Purchaser and the amount of net
realized losses shall be deposited by the Purchaser in the Collateral Fund
promptly upon realization. The Company shall periodically (but not more
frequently than monthly) distribute to the Purchaser upon request an amount of
cash, to the extent cash is available therefore in the Collateral Fund, equal to
the amount by which the balance of the Collateral Fund, after giving effect to
all other distributions to be made from the Collateral Fund on such date,
exceeds the Required Collateral Fund Balance. Any amounts so distributed shall
be released from the lien and security interest of this Agreement.

            Section 3.03. Grant of Security Interest.

        The Purchaser hereby grants to the Company for the benefit of the
Certificateholders under the Pooling and Servicing Agreement a security interest
in and lien on all of the Purchaser's right, title and interest, whether now
owned or hereafter acquired, in and to: (1) the Collateral Fund, (2) all amounts
deposited in the Collateral Fund and Collateral Fund Permitted Investments in
which such amounts are invested (and the distributions and proceeds of such
investments) and (3) all cash and non-cash proceeds of any of the foregoing,
including proceeds of the voluntary conversion thereof (all of the foregoing
collectively, the "Collateral").

        The Purchaser acknowledges the lien on and the security interest in the
Collateral for the benefit of the Certificateholders. The Purchaser shall take
all actions requested by the Company as may be reasonably necessary to perfect
the security interest created under this Agreement in the Collateral and cause
it to be prior to all other security interests and liens, including the
execution and delivery to the Company for filing of appropriate financing
statements in accordance with applicable law. The Company shall file appropriate
continuation statements, or appoint an agent on its behalf to file such
statements, in accordance with applicable law.

            Section 3.04. Collateral Shortfalls.

        In the event that amounts on deposit in the Collateral Fund at any time
are insufficient to cover any withdrawals therefrom that the Company is then
entitled to make hereunder, the Purchaser shall be obligated to pay such amounts
to the Company immediately upon demand. Such obligation shall constitute a
general corporate obligation of the Purchaser. The failure to pay such amounts
within two Business Days of such demand (except for amounts to cover interest on
a Mortgage Loan pursuant to Sections 2.02(d) and 2.03 (b)), shall cause an
immediate termination of the Purchaser's right to make any Election to Delay
Foreclosure or Election to Foreclose and the Company's obligations under this
Agreement with respect to all Mortgage Loans to which such insufficiencies
relate, without the necessity of any further notice or demand on the part of the
Company.

                                   ARTICLE IV

            Section 4.01. Assessment of Servicing Compliance; Registered Public
Accounting Firm Attestation Reports; Exchange Act Reporting.

            (a) The Purchaser shall furnish, or cause to be furnished in the
case of clause (iii), to the Master Servicer, no later than March 5 of each year
or if such day is not a Business Day, the next Business Day (with a 10 calendar
day cure period, but in no event later than March 15), commencing in March 20 ,
the following:

            (i) a report (in form and substance reasonably satisfactory to the
      Master Servicer and the Depositor) regarding the Purchaser's assessment of
      compliance with the Servicing Criteria applicable to it during the
      immediately preceding calendar year, as required under Rules 13a-18 and
      15d-18 of the Exchange Act and Item 1122 of Regulation AB. Such report
      shall be addressed to the Master Servicer and signed by an authorized
      officer of the Purchaser, and shall address, at a minimum, each of the
      Servicing Criteria applicable to the Purchaser;

            (ii) a report of a registered public accounting firm reasonably
      acceptable to the Master Servicer and the Depositor that attests to, and
      reports on, the assessment of compliance made by the Purchaser and
      delivered pursuant to the preceding paragraph. Such attestation shall be
      in accordance with Rules 1-02(a)(3) and 2-02(g) of Regulation S-X under
      the Securities Act and the Exchange Act. If requested by the Master
      Servicer or the Depositor, such report shall contain or be accompanied by
      a consent of such accounting firm to inclusion or incorporation of such
      report in the Depositor's Registration Statement on Form S-3 relating to
      the Certificates and the Trust's Form 10-K; and

            (iii) an assessment of compliance and accountants' attestation as
      described in paragraphs (i) and (ii) of this Section 4.01(a) with respect
      to each Subcontractor determined by the Purchaser pursuant to Section 4.02
      to be "participating in the servicing function" within the meaning of Item
      1122 of Regulation AB.

            An assessment of compliance provided by a Subcontractor pursuant to
Section 4.01(a)(iii) need not address any elements of the Servicing Criteria
applicable to it other than those specified by the Purchaser pursuant to Section
4.02.

            No later than 30 days following the end of each fiscal year for the
Trust for which a Form 10-K is required to be filed, the Purchaser shall forward
to the Master Servicer the name of each Subcontractor engaged by it and what
Servicing Criteria will be addressed in the report on assessment of compliance
prepared by such Subcontractor. When the Purchaser submits its assessment to the
Master Servicer, it will also at such time include the assessment (and
attestation pursuant to Section 4.01(a)(ii) hereof) of each Subcontractor
engaged by it.

            (b) Within five (5) calendar days after a Distribution Date, the
Purchaser shall provide to the Master Servicer, to the extent known, in
EDGAR-compatible format, or in such other form as otherwise agreed upon by the
Master Servicer and the Purchaser, the form and substance of any Additional Form
10-D Disclosure applicable to the Purchaser, as indicated in the table in
Exhibit S to the Pooling and Servicing Agreement. The Purchaser acknowledges
that the performance by the Master Servicer of its duties under Section 3.12(a)
of the Pooling and Servicing Agreement relating to the timely preparation and
filing of Form 10-D is contingent upon the Purchaser strictly observing all
applicable deadlines in the performance of its duties under this Section
4.01(b).

            (c) No later than March 5 (with a 10 calendar day cure period, but
in no event later than March 15) of each year that the Trust is subject to the
Exchange Act reporting requirements, commencing in March 20 , the Purchaser
shall provide to the Master Servicer, to the extent known, in EDGAR-compatible
format, or in such other form as otherwise agreed upon by the Master Servicer
and the Purchaser, the form and substance of any Additional Form 10-K Disclosure
applicable to the Purchaser, as indicated in the table in Exhibit T to the
Pooling and Servicing Agreement. The Purchaser acknowledges that the performance
by the Master Servicer of its duties under Section 3.12(b) of the Pooling and
Servicing Agreement relating to the timely preparation and filing of Form 10-K
is contingent upon the Purchaser strictly observing all applicable deadlines in
the performance of its duties under this Section 4.01(c).

            (d) For so long as the Trust is subject to the Exchange Act
reporting requirements, no later than the end of business on the second Business
Day after the occurrence of a Reportable Event applicable to the Purchaser, the
Purchaser shall provide to the Master Servicer, to the extent known, in
EDGAR-compatible format, or in such other form as otherwise agreed upon by the
Master Servicer and the Purchaser, the form and substance of any Form 8-K
Disclosure Information applicable to the Purchaser, as indicated in the table in
Exhibit U to the Pooling and Servicing Agreement. The Purchaser acknowledges
that the performance by the Master Servicer of its duties under Section 3.12(c)
of the Pooling and Servicing Agreement relating to the timely preparation and
filing of Form 8-K is contingent upon the Purchaser strictly observing all
applicable deadlines in the performance of its duties under this Section
4.01(d).

            (e) The Purchaser shall provide such information regarding itself as
the Master Servicer or the Depositor request for the purpose of complying with
Item 1108 of Regulation AB, including at a minimum, the information set forth in
Exhibit A.

            (f) The Purchaser shall indemnify the Master Servicer, each
affiliate of the Master Servicer, the Trust, each broker dealer acting as
underwriter or initial purchaser of the Certificates, each Person who controls
any of such parties and the Depositor (within the meaning of Section 15 of the
Securities Act and Section 20 of the Exchange Act); and the respective present
and former directors, officers, employees and agents of each of the foregoing
and of the Depositor (each such entity, an "Indemnified Party"), and shall hold
each of them harmless from and against any losses, damages, penalties, fines,
forfeitures, legal fees and expenses and related costs, judgments, and any other
costs, fees and expenses that any of them may sustain arising out of or based
upon:

            (i) (A) any untrue statement of a material fact contained or alleged
      to be contained in any information, report, certification, accountants'
      letter or other material provided in written or electronic form under this
      Section 4.01 or Section 4.02 hereof by or on behalf of the Purchaser, or
      provided under Sections 4.01 or 4.02 by or on behalf of any Subcontractor
      (collectively, the "Purchaser Information"), or (B) the omission or
      alleged omission to state in the Purchaser Information a material fact
      required to be stated in the Purchaser Information or necessary in order
      to make the statements therein, in the light of the circumstances under
      which they were made, not misleading; provided, by way of clarification,
      that clause (B) of this paragraph shall be construed solely by reference
      to the Purchaser Information and not to any other information communicated
      in connection with a sale or purchase of securities, without regard to
      whether the Purchaser Information or any portion thereof is presented
      together with or separately from such other information; or

            (ii) any failure by the Purchaser or any Subcontractor engaged by
      the Purchaser to deliver any information, report, certification,
      accountants' letter or other material when and as required under Sections
      4.01 or 4.02, including any failure by the Purchaser to identify pursuant
      to Section 4.02 any Subcontractor "participating in the servicing
      function" within the meaning of Item 1122 of Regulation AB.

        In the case of any failure of performance described in clause (ii) of
this Section, the Purchaser shall promptly reimburse the Master Servicer and the
Depositor, as applicable, for all costs reasonably incurred by each such party
in order to obtain the information, report, certification, accountants' letter
or other material not delivered as required by the Purchaser or any
Subcontractor. If the indemnification provided for herein is unavailable to hold
harmless any Indemnified Party, then the Purchaser agrees that it shall
contribute to the amount paid or payable by such Indemnified Party as a result
of the losses, claims, damages or liabilities of such Indemnified Party in such
proportion as is appropriate to reflect the relative fault of such Indemnified
Party on the one hand and the Purchaser on the other in connection with a breach
of the Purchaser's obligations under this Section 4.1 or the Purchaser's
negligence, bad faith or willful misconduct in connection therewith.

            (g) Notwithstanding anything contained in this Section 4.01 to the
contrary, the provisions of this Section 4.01 shall not apply to the Purchaser
with respect to any calendar year unless the Purchaser exercises its rights set
forth under Sections 2.02 or 2.03 of this Agreement in such calendar year.

            Section 4.02. Engagement of Affiliates or Third-Parties.

            The Purchaser shall not hire any Subservicer without the consent of
the Master Servicer and the Depositor. The Purchaser shall not hire or otherwise
utilize the services of any Subcontractor to fulfill any of the obligations of
the Purchaser as servicer under this Agreement unless the Purchaser complies
with the provisions of this Section.

            It shall not be necessary for the Purchaser to seek the consent of
the Master Servicer or the Depositor to the utilization of any Subcontractor.
The Purchaser shall promptly upon request provide to the Master Servicer (or any
designee of Master Servicer) a written description (in form and substance
satisfactory to the Master Servicer and the Depositor) of the role and function
of each Subcontractor utilized by the Purchaser, specifying (i) the identity of
each such Subcontractor, (ii) which (if any) of such Subcontractors are
"participating in the servicing function" within the meaning of Item 1122 of
Regulation AB, and (iii) which elements of the Servicing Criteria will be
addressed in assessments of compliance provided by each Subcontractor identified
pursuant to clause (ii) of this paragraph.

            As a condition to the utilization of any Subcontractor determined to
be "participating in the servicing function" within the meaning of Item 1122 of
Regulation AB, the Purchaser shall cause any such Subcontractor used by the
Purchaser, for the benefit of the Master Servicer and the Depositor to comply
with the provisions of Section 4.01 of this Agreement to the same extent as if
such Subcontractor were the Purchaser. The Purchaser shall be responsible for
obtaining from each Subcontractor and delivering to the Master Servicer any
assessment of compliance and attestation required to be delivered by such
Subcontractor under Section 4.01, in each case as and when required to be
delivered.

            Section 4.03. Notification of Merger.

            The Purchaser and such successor or surviving Person shall notify
the Depositor, the Master Servicer and the Trustee of any such merger,
conversion or consolidation at least two Business Days prior to the effective
date thereof and shall provide the Depositor and the Master Servicer with all
information required by the Depositor to comply with its reporting obligations
not later than the effective date of such merger, conversion or consolidation
(unless giving prior notice would be prohibited by applicable law or by a
confidentiality agreement, in which case notice shall be given by 12 noon
eastern time one Business Day after such merger or consolidation).

            Section 4.04. Compliance with Article IV.

            If (a) the Purchaser fails to comply with its obligations to deliver
any assessment of servicing compliance or registered public accounting firm
attestation reports required pursuant to this Article IV or (b) any
Subcontractor engaged by the Purchaser fails to comply with its obligations to
deliver any assessment of servicing compliance or registered public accounting
firm attestation reports, the Master Servicer, may, after consultation with the
Depositor, terminate this Agreement pursuant to Section 2.04(a)(iv).

                                   ARTICLE V

                            MISCELLANEOUS PROVISIONS

            Section 5.01. Amendment.

            This Agreement may be amended from time to time by the Company and
the Purchaser by written agreement signed by the Company and the Purchaser,
subject to the acknowledgement of the Rating Agencies as contemplated in Section
3.08 of the Pooling and Servicing Agreement with respect to such amendment.

            Section 5.02. Counterparts.

            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 5.03. 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.

            Section 5.04. Notices.

            All demands, notices and direction hereunder shall be in writing or
by telecopy and shall be deemed effective upon receipt to:

        (a)    in the case of the Company,
                   Wells Fargo Bank, N.A.
                   9062 Old Annapolis Road
                   Columbia, MD 21045

                   Attention: Vice President, Master Servicing
                   Phone: 410-884-2000
                   Fax: 410-715-1573

        (b)    in the case of the Purchaser,

            Section 5.05. Severability of Provisions.

        If any one or more of the covenants, agreements, provisions or terms of
this Agreement shall be for any reason whatsoever, including regulatory, held
invalid, then such covenants, agreements, provisions or terms of this Agreement
and shall in no way affect the validity or enforceability of the other
provisions of this Agreement.

            Section 5.06. Successors and Assigns.

The provisions of this Agreement shall be binding upon and inure to the benefit
of the respective successors and assigns of the parties hereto, and all such
provisions shall inure to the benefit of the Certificateholders; provided,
however, that the rights under this Agreement cannot be assigned by the
Purchaser without the consent of the Company.

            Section 5.07. Article and Section Headings.

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

            Section 5.08. Confidentiality.

        The Purchaser agrees that all information supplied by or on behalf of
the Company pursuant to Sections 2.01 or 2.02, including individual account
information, is the property of the Company and the Purchaser agrees to hold
such information confidential and not to disclose such information.

        Each party hereto agrees that neither it, nor any officer, director,
employee, affiliate or independent contractor acting at such party's direction
will disclose the terms of Section 5.09 of this Agreement to any person or
entity other than such party's legal counsel except pursuant to a final,
non-appealable order of court, the pendency of such order the other party will
have received notice of at least five business days prior to the date thereof,
or pursuant to the other party's prior express written consent.

            Section 5.09. Indemnification.

        The Purchaser agrees to indemnify and hold harmless the Company, the
Depositor, and each Servicer and each person who controls the Company, the
Depositor, or a Servicer and each of their respective officers, directors,
affiliates and agents acting at the Company's, the Depositor's, or a Servicer's
direction (the "Indemnified Parties") against any and all losses, claims,
damages or liabilities to which they may be subject, insofar as such losses,
claims, damages or liabilities (or actions in respect thereof) arise out of, or
are based upon, actions taken by, or actions not taken by, the Company, the
Depositor, or a Servicer, or on their behalf, in accordance with the provisions
of this Agreement and (i) which actions conflict with the Company's, the
Depositor's, or a Servicer's obligations under the Pooling and Servicing
Agreement or the related Servicing Agreement, or (ii) give rise to securities
law liability under federal or state securities laws with respect to the
Certificates. The Purchaser hereby agrees to reimburse the Indemnified Parties
for the reasonable legal or other expenses incurred by them in connection with
investigating or defending any such loss, claim, damage, liability or action.
The indemnification obligations of the Purchaser hereunder shall survive the
termination or expiration of this Agreement.

            Section 5.10 Regulation AB Compliance; Intent of Parties;
Reasonableness.

               The parties hereto acknowledge that interpretations of the
requirements of Regulation AB may change over time, whether due to interpretive
guidance provided by the Commission or its staff, consensus among participants
in the asset-backed securities markets, advice of counsel, or otherwise, and
agree to comply with requests made by the Depositor or the Master Servicer in
good faith for delivery of information under these provisions on the basis of
evolving interpretations of Regulation AB. In connection with the Trust, the
parties hereto shall cooperate fully with the Master Servicer and the Depositor
to deliver to the Master Servicer and/or the Depositor (including its assignees
or designees), any and all statements, reports, certifications, records and any
other information available to such party and reasonably necessary in the good
faith determination of the Depositor or the Master Servicer to permit the
Depositor or the Master Servicer to comply with the provisions of Regulation AB,
together with such disclosures reasonably believed by the Depositor or the
Master Servicer to be necessary in order to effect such compliance.

<PAGE>

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

                                     WELLS FARGO BANK, N.A.

                                     By: ___________________________________
                                         Name:
                                         Title:

                                     [NAME OF PURCHASER]

                                     By: ___________________________________
                                         Name:
                                         Title:

<PAGE>

                                                                       EXHIBIT A
                                                                       ---------

                              PURCHASER INFORMATION

        (A) the Purchaser's form of organization;

        (B) a description of how long the Purchaser has been servicing
residential mortgage loans; a general discussion of the Purchaser's experience
in servicing assets of any type as well as a more detailed discussion of the
Purchaser's experience in, and procedures for, the servicing function it will
perform under the Agreement; information regarding the size, composition and
growth of the Purchaser's portfolio of residential mortgage loans of a type
similar to the Mortgage Loans and information on factors related to the
Purchaser that may be material, in the good faith judgment of the Master
Servicer or the Depositor, to any analysis of the servicing of the Mortgage
Loans or the related asset-backed securities, as applicable, including, without
limitation:

               (1) whether any prior securitizations of mortgage loans of a type
        similar to the Mortgage Loans involving the Purchaser have defaulted or
        experienced an early amortization or other performance triggering event
        because of servicing during the three-year period immediately preceding
        the date of engagement of the Purchaser;

               (2) the extent of outsourcing the Purchaser utilizes;

               (3) whether there has been previous disclosure of material
        noncompliance with the applicable servicing criteria with respect to
        securitizations of residential mortgage loans involving the Purchaser as
        a servicer during the three-year period immediately preceding the date
        of engagement of the Purchaser;

               (4) whether the Purchaser has been terminated as servicer in a
        residential mortgage loan securitization, either due to a servicing
        default or to application of a servicing performance test or trigger;
        and

               (5) such other information as the Master Servicer or the
        Depositor may reasonably request for the purpose of compliance with Item
        1108(b)(2) of Regulation AB;

        (C) a description of any material changes during the three-year period
immediately preceding the date of engagement of the Purchaser to the Purchaser's
policies or procedures with respect to the servicing function it will perform
under the Agreement for mortgage loans of a type similar to the Mortgage Loans;

        (D) information regarding the Purchaser's financial condition, to the
extent that there is a material risk that an adverse financial event or
circumstance involving the Purchaser could have a material adverse effect on the
performance by the Purchaser of its servicing obligations under the Agreement;

        (E) information regarding advances made by the Purchaser on the Mortgage
Loans and the Purchaser's overall servicing portfolio of residential mortgage
loans for the three-year period immediately preceding the date of engagement of
the Purchaser, which may be limited to a statement by an authorized officer of
the Purchaser to the effect that the Purchaser has made all advances required to
be made on residential mortgage loans serviced by it during such period, or, if
such statement would not be accurate, information regarding the percentage and
type of advances not made as required, and the reasons for such failure to
advance;

        (F) a description of the Purchaser's processes and procedures designed
to address any special or unique factors involved in servicing loans of a
similar type as the Mortgage Loans;

        (G) a description of the Purchaser's processes for handling
delinquencies, losses, bankruptcies and recoveries, such as through liquidation
of mortgaged properties, sale of defaulted mortgage loans or workouts; and

        (H) information as to how the Purchaser defines or determines
delinquencies and charge-offs, including the effect of any grace period,
re-aging, restructuring, partial payments considered current or other practices
with respect to delinquency and loss experience.

<PAGE>

                                    EXHIBIT N

                 FORM OF INITIAL CERTIFICATION OF THE CUSTODIAN

                                November 29, 2007

Wells Fargo Asset Securities Corporation
5325 Spectrum Drive
Frederick, Maryland  21703

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, Maryland 21045-1951
Attn: Corporate Trust Services WFMBS 2007-AR8

HSBC Bank USA, National Association
452 Fifth Avenue
New York, New York 10018
Attn: Alexander Pabon

      Re:   The Pooling and Servicing Agreement, dated November 29, 2007, among
            Wells Fargo Asset Securities Corporation, as Depositor, Wells Fargo
            Bank, N.A., as Master Servicer, and HSBC Bank USA, National
            Association, as Trustee, relating to the Wells Fargo Asset
            Securities Corporation; Mortgage Pass-Through Certificates, Series
            2007-AR8
            --------------------------------------------------------------------

Ladies and Gentlemen:

        In accordance with the provisions of Section 2.02 of the
above-referenced Pooling and Servicing Agreement (the "Pooling and Servicing
Agreement"), the undersigned, as Custodian on behalf of the Trustee, hereby
certifies that, except as specified in any list of exceptions attached hereto,
it has received the original Mortgage Note relating to each of the Mortgage
Loans listed on the Mortgage Loan Schedule.

        The Custodian has made no independent examination of any documents
contained in each Mortgage File beyond the review specifically required in the
Pooling and Servicing Agreement in connection with this initial certification.
The Custodian makes no representations as to: (i) the validity, legality,
sufficiency, enforceability, recordability or genuineness of any of the
documents contained in each Mortgage File or any of the Mortgage Loans
identified in the Mortgage Loan Schedule or (ii) the collectibility,
insurability, effectiveness or suitability of any such Mortgage Loan.

<PAGE>

        Capitalized terms used but not defined herein shall have the meanings
ascribed to such terms in the Pooling and Servicing Agreement.

                                     WELLS FARGO BANK, N.A.,
                                       as Custodian on behalf of the Trustee

                                     By:
                                         -----------------------------------
                                         Name:
                                         Title:

<PAGE>

                                    EXHIBIT O

                  FORM OF FINAL CERTIFICATION OF THE CUSTODIAN

                              [---------- --, ----]

Wells Fargo Asset Securities Corporation
5325 Spectrum Drive
Frederick, Maryland  21703

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, Maryland 21045-1951
Attn: Corporate Trust Services WFMBS 2007-AR8

HSBC Bank USA, National Association
452 Fifth Avenue
New York, New York 10018
Attn: Alexander Pabon

      Re:   The Pooling and Servicing Agreement, dated November 29, 2007, among
            Wells Fargo Asset Securities Corporation, as Depositor, Wells Fargo
            Bank, N.A., as Master Servicer, and HSBC Bank USA, National
            Association, as Trustee, relating to the Wells Fargo Asset
            Securities Corporation; Mortgage Pass-Through Certificates, Series
            2007-AR8.
            -------------------------------------------------------------------

Ladies and Gentlemen:

        In accordance with the provisions of Section 2.02 of the
above-referenced Pooling and Servicing Agreement (the "Pooling and Servicing
Agreement"), the undersigned, as Custodian on behalf of the Trustee, hereby
certifies that, as to each Mortgage Loan listed in the Mortgage Loan Schedule,
except as may be specified in any list of exceptions attached hereto, such
Mortgage File contains all of the items required to be delivered pursuant to
Section 2.01 of the Pooling and Servicing Agreement.

        The Custodian has made no independent examination of any documents
contained in each Mortgage File beyond the review specifically required in the
Pooling and Servicing Agreement in connection with this final certification. The
Custodian makes no representations as to: (i) the validity, legality,
sufficiency, enforceability, recordability or genuineness of any of the
documents contained in each Mortgage File or any of the Mortgage Loans
identified in the Mortgage Loan Schedule or (ii) the collectibility,
insurability, effectiveness or suitability of any such Mortgage Loan.

<PAGE>

        Capitalized terms used but not defined herein shall have the meanings
ascribed to such terms in the Pooling and Servicing Agreement.

                                     WELLS FARGO BANK, N.A.,
                                       as Custodian on behalf of the Trustee

                                     By:
                                         ---------------------------------------
                                         Name:
                                         Title:

<PAGE>

                                    EXHIBIT P

                      FORM OF SARBANES-OXLEY CERTIFICATION

                    Wells Fargo Asset Securities Corporation
                       Mortgage Pass-Through Certificates,
                                 Series 2007-AR8

        I, [________], certify that:

1.    I have reviewed this report on Form 10-K and all reports on Form 10-D
      required to be filed in respect of the period covered by this report on
      Form 10-K of the Wells Fargo Asset Securities Corporation, Mortgage
      Pass-Through Certificates, Series 2007-AR8 Trust (the "Exchange Act
      Periodic Reports");

2.    Based on my knowledge, the Exchange Act Periodic Reports, taken as a
      whole, do not contain any untrue statement of a material fact or omit to
      state a material fact necessary to make the statements made, in light of
      the circumstances under which such statements were made, not misleading
      with respect to the period covered by this report;

3.    Based on my knowledge, all of the distribution, servicing and other
      information required to be provided under Form 10-D for the period covered
      by this report is included in the Exchange Act Periodic Reports;

4.    I am responsible for reviewing the activities performed by the Master
      Servicer and based upon my knowledge and the compliance review conducted
      in preparing the servicer compliance statement required in this report
      under Item 1123 of Regulation AB, and except as disclosed in the Exchange
      Act Periodic Reports, the Master Servicer has fulfilled its obligations
      under the pooling and servicing agreement, dated November 29, 2007, among
      Wells Fargo Asset Securities Corporation, as depositor, Wells Fargo Bank,
      N.A., as master servicer, and HSBC Bank USA, National Association, as
      trustee, in all material respects; and

5.    All of the reports on assessment of compliance with the servicing criteria
      for asset-backed securities and their related attestation reports on
      assessment of compliance with servicing criteria for asset-backed
      securities required to be included in this report in accordance with Item
      1122 of Regulation AB and Exchange Act Rules 13a-18 and 15d-18 have been
      included as an exhibit to this report, except as otherwise disclosed in
      this report. Any material instances of noncompliance described in such
      reports have been disclosed in this report on Form 10-K.

[The following is included only for a transaction where there are Servicers
other than Wells Fargo Bank: In giving the certifications above, I have
reasonably relied on information provided to me by the following unaffiliated
parties: [Name of Servicers other than Wells Fargo Bank], as Servicer.]

Date: [_____]

                                       By:
                                          -----------------------------------
                                          Name:
                                          Title:
                                          (senior officer in charge of the
                                          servicing function of the Master
                                          Servicer)

<PAGE>

                                    EXHIBIT Q

WFMBS
WFMBS   2007-AR08 Schedule of Pledged Asset Mortgage Loans
7/1 LIBOR/CMT ARMS

<TABLE>
<CAPTION>
(i)             (ii)                                       (iii)        (iv)        (v)          (vi)        (vii)      (viii)
----------      --------------------------- -----   -----  --------     --------    --------     ----------- --------   ----------
                                                                                    CURRENT
                                                                        CURRENT     NET
MORTGAGE                                                                MORTGAGE    MORTGAGE     CURRENT     ORIGINAL   SCHEDULED
LOAN                                                ZIP    PROPERTY     INTEREST    INTEREST     MONTHLY     TERM TO    MATURITY
NUMBER          CITY                        STATE   CODE   TYPE         RATE        RATE         PAYMENT     MATURITY   DATE
----------      --------------------------- -----   -----  --------     --------    --------     ----------- --------   ----------
<S>             <C>                         <C>     <C>    <C>          <C>         <C>          <C>         <C>        <C>
0170627194      NORTH ROYALTON              OH      44133  SFD          6.250       5.990        $1,770.83   360        1-Aug-37
0170653893      DOVER                       NH      3820   SFD          6.250       5.990        $2,123.74   360        1-Aug-37
0170656011      WESTFIELD                   NJ      7090   SFD          6.250       5.990        $3,255.21   360        1-Aug-37
0170656805      CHICAGO                     IL      60610  HCO          6.250       5.990        $2,526.04   360        1-Aug-37
0170657621      FREEHOLD                    NJ      7728   SFD          6.250       5.990        $4,687.50   360        1-Aug-37
0170679351      BRIAN HEAD                  UT      84719  LCO          6.375       6.115        $2,573.91   360        1-Aug-37

<CAPTION>
(i)              (ix)            (x)      (xi)      (xii)       (xiii)    (xiv)        (xv)     (xvi)    (xvii)     (xviii)
----------       --------------  ------   --------  ---------   -------   ----------   ------   -------  ---------  ----------
                 CUT-OFF
MORTGAGE         DATE                               MORTGAGE              MASTER                                    NEXT
LOAN             PRINCIPAL                          INSURANCE   SERVICE   SERVICE               GROSS    PERIODIC   ADJUSTMENT
NUMBER           BALANCE         LTV      SUBSIDY   CODE        FEE       FEE          INDEX    MARGIN   CAP        DATE
----------       --------------  ------   --------  ---------   -------   ----------   ------   -------  --------   ----------
<S>              <C>             <C>      <C>       <C>         <C>       <C>          <C>      <C>       <C>       <C>
0170627194       $340,000.00     97.14                          0.250     0.010        1CM      2.750     2.000     1-Aug-14
0170653893       $409,892.67     100.00                         0.250     0.010        1CM      2.750     2.000     1-Aug-14
0170656011       $625,000.00     98.43                          0.250     0.010        1CM      2.750     2.000     1-Aug-14
0170656805       $485,000.00     100.00                         0.250     0.010        1CM      2.750     2.000     1-Aug-14
0170657621       $900,000.00     98.90                          0.250     0.010        1CM      2.750     2.000     1-Aug-14
0170679351       $484,500.00     100.00                         0.250     0.010        1CM      2.750     2.000     1-Aug-14

                 $3,244,392.67

<CAPTION>
(i)              (xix)     (xx)         (xxi)
---------        -------   ----------   ----------------------
                                        MORTGAGE
MORTGAGE                   MORTGAGE     LOAN
LOAN             RATE      LOAN         SERVICER
NUMBER           CEILING   TYPE         NAME
----------       -------   ----------   ----------------------
<S>              <C>       <C>          <C>
0170627194       11.250    1            WELLS FARGO BANK, N.A.
0170653893       11.250    1            WELLS FARGO BANK, N.A.
0170656011       11.250    1            WELLS FARGO BANK, N.A.
0170656805       11.250    1            WELLS FARGO BANK, N.A.
0170657621       11.250    1            WELLS FARGO BANK, N.A.
0170679351       11.375    1            WELLS FARGO BANK, N.A.
</TABLE>

COUNT:          6
WAC:            6.268666822
WAM:            357
WALTV:          99.09269614

<PAGE>

<TABLE>
<CAPTION>
                                                     EXHIBIT R

                          Servicing Criteria to be Addressed in Assessment of Compliance

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

                                   SERVICING CRITERIA                          APPLICABLE SERVICING CRITERIA
-------------------------------------------------------------------------- --------------------------------------
                                                                           Master
   Reference                             Criteria                          Servicer Trustee  Servicers Custodian
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                                         General Servicing Considerations
----------------- -------------------------------------------------------- -------- -------- --------- ----------
<S>               <C>                                                         <C>   <C>         <C>        <C>

                  Policies and procedures are instituted to monitor any
                  performance or other triggers and events of default in
1122(d)(1)(i)     accordance with the transaction agreements.                 X      X(1)       X
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  If any material servicing activities are outsourced to
                  third parties, policies and procedures are instituted
                  to monitor the third party's performance and                X                 X
1122(d)(1)(ii)    compliance with such servicing activities.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Any requirements in the transaction agreements to
                  maintain a back-up servicer for the mortgage loans are
1122(d)(1)(iii)   maintained.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  A fidelity bond and errors and omissions policy is in
                  effect on the party participating in the servicing
                  function throughout the reporting period in the amount
                  of coverage required by and otherwise in accordance         X        X        X          X
1122(d)(1)(iv)    with the terms of the transaction agreements.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                                        Cash Collection and Administration
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Payments on mortgage loans are deposited into the
                  appropriate custodial bank accounts and related bank
                  clearing accounts no more than two business days
                  following receipt, or such other number of days             X                 X
1122(d)(2)(i)     specified in the transaction agreements.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Disbursements made via wire transfer on behalf of an
                  obligor or to an investor are made only by authorized
1122(d)(2)(ii)    personnel.                                                  X                 X
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Advances of funds or guarantees regarding collections,
                  cash flows or distributions, and any interest or other
                  fees charged for such advances, are made, reviewed and      X      X(2)       X
1122(d)(2)(iii)   approved as specified in the transaction agreements.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  The related accounts for the transaction, such as cash
                  reserve accounts or accounts established as a form of
                  overcollateralization, are separately maintained            X                 X
                  (e.g., with respect to commingling of cash) as set
1122(d)(2)(iv)    forth in the transaction agreements.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Each custodial account is maintained at a federally
                  insured depository institution as set forth in the
                  transaction agreements. For purposes of this criterion,
                  "federally insured depository institution" with respect
                  to a foreign financial institution means a foreign
                  financial institution that meets the requirements of        X                 X
1122(d)(2)(v)     Rule 13k-1(b)(1) of the Securities Exchange Act.

----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Unissued checks are safeguarded so as to prevent
1122(d)(2)(vi)    unauthorized access.                                        X                 X
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Reconciliations are prepared on a monthly basis for all
                  asset-backed securities related bank accounts,
                  including custodial accounts and related bank clearing
                  accounts. These reconciliations are (A) mathematically
                  accurate; (B) prepared within 30 calendar days after
                  the bank statement cutoff date, or such other number of
                  days specified in the transaction agreements; (C)
                  reviewed and approved by someone other than the person
                  who prepared the reconciliation; and (D) contain
                  explanations for reconciling items. These reconciling
                  items are resolved within 90 calendar days of their
                  original identification, or such other number of days       X                 X
1122(d)(2)(vii)   specified in the transaction agreements.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                                        Investor Remittances and Reporting
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Reports to investors, including those to be filed with
                  the Commission, are maintained in accordance with the
                  transaction agreements and applicable Commission
                  requirements. Specifically, such reports (A) are
                  prepared in accordance with timeframes and other terms
                  set forth in the transaction agreements; (B) provide
                  information calculated in accordance with the terms
                  specified in the transaction agreements; (C) are filed
                  with the Commission as required by its rules and
                  regulations; and (D) agree with investors' or the
                  trustee's records as to the total unpaid principal          X                 X
                  balance and number of mortgage loans serviced by the
1122(d)(3)(i)     Servicer.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Amounts due to investors are allocated and remitted in
                  accordance with timeframes, distribution priority and
1122(d)(3)(ii)    other terms set forth in the transaction agreements.        X                 X
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Disbursements made to an investor are posted within
                  two business days to the Servicer's investor records,       X                 X
                  or such other number of days specified in the
1122(d)(3)(iii)   transaction agreements.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Amounts remitted to investors per the investor reports
                  agree with cancelled checks, or other form of payment,      X                 X
1122(d)(3)(iv)    or custodial bank statements.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                                             Pool Asset Administration
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Collateral or security on mortgage loans is maintained
                  as required by the transaction agreements or related
1122(d)(4)(i)     mortgage loan documents.                                    X                 X          X
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Mortgage loan and related documents are safeguarded as                        X          X
1122(d)(4)(ii)    required by the transaction agreements.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Any additions, removals or substitutions to the asset
                  pool are made, reviewed and approved in accordance
                  with any conditions or requirements in the transaction      X        X        X
1122(d)(4)(iii)   agreements.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Payments on mortgage loans, including any payoffs, made
                  in accordance with the related mortgage loan documents
                  are posted to the Servicer's obligor records maintained
                  no more than two business days after receipt, or such
                  other number of days specified in the transaction
                  agreements, and allocated to principal, interest or
                  other items (e.g., escrow) in accordance with the related                     X
1122(d)(4)(iv)    mortgage loan documents.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  The Servicer's records regarding the mortgage loans agree with
                  the Servicer's records with respect to an obligor's unpaid
1122(d)(4)(v)     principal balance.                                                            X
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Changes with respect to the terms or status of an
                  obligor's mortgage loans (e.g., loan modifications or
                  re-agings) are made, reviewed and approved by
                  authorized personnel in accordance with the transaction
                  agreements and related pool asset                           X                 X
1122(d)(4)(vi)    documents.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Loss mitigation or recovery actions (e.g., forbearance
                  plans, modifications and deeds in lieu of foreclosure,
                  foreclosures and repossessions, as applicable) are
                  initiated, conducted and concluded in accordance with
                  the timeframes or other requirements established by         X                 X
1122(d)(4)(vii)   the transaction agreements.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Records documenting collection efforts are maintained during
                  the period a mortgage loan is delinquent in accordance with
                  the transaction agreements. Such records are maintained on at
                  least a monthly basis, or such other period specified in the
                  transaction agreements, and describe the entity's activities
                  in monitoring delinquent mortgage loans including, for
                  example, phone calls, letters and payment rescheduling plans
                  in cases where delinquency is deemed temporary                                X
1122(d)(4)(viii) (e.g., illness or unemployment).
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Adjustments to interest rates or rates of return for mortgage
                  loans with variable rates are computed based
1122(d)(4)(ix)    on the related mortgage loan documents.                                       X
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Regarding any funds held in trust for an obligor (such
                  as escrow accounts): (A) such funds are analyzed, in
                  accordance with the obligor's mortgage loan documents,
                  on at least an annual basis, or such other period
                  specified in the transaction agreements; (B) interest
                  on such funds is paid, or credited, to obligors in
                  accordance with applicable mortgage loan documents and
                  state laws; and (C) such funds are returned to the
                  obligor within 30 calendar days of full repayment of
                  the related mortgage loans, or such other number of
1122(d)(4)(x)     days specified in the transaction agreements.                                 X
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Payments made on behalf of an obligor (such as tax or
                  insurance payments) are made on or before the related
                  penalty or expiration dates, as indicated on the
                  appropriate bills or notices for such payments,
                  provided that such support has been received by the
                  servicer at least 30 calendar days prior to these
                  dates, or such other number of days specified in the
1122(d)(4)(xi)    transaction agreements.                                                       X
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Any late payment penalties in connection with any
                  payment to be made on behalf of an obligor are paid
                  from the Servicer's funds and not charged to the
                  obligor, unless the late payment was due to the                               X
1122(d)(4)(xii)   obligor's error or omission.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Disbursements made on behalf of an obligor are posted
                  within two business days to the obligor's records                             X
                  maintained by the Servicer, or such other number of
1122(d)(4)(xiii) days specified in the transaction agreements.
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Delinquencies, charge-offs and uncollectible accounts
                  are recognized and recorded in accordance with the
1122(d)(4)(xiv)   transaction agreements.                                     X                 X
----------------- -------------------------------------------------------- -------- -------- --------- ----------
                  Any external enhancement or other support, identified
                  in Item 1114(a)(1) through (3) or Item 1115 of
                  Regulation AB, is maintained as set forth in the
1122(d)(4)(xv)    transaction agreements.                                     X(3)
----------------- -------------------------------------------------------- -------- -------- --------- ----------
</TABLE>

[______________________]

Date:   _________________________

By:_____________________________
    Name:
    Title:

(1) This Servicing Criterion applies to the Trustee with respect to Events of
    Default as set forth in the Pooling and Servicing Agreement.

(2) This Servicing Criterion applies to the Trustee if the Trustee was required
    during the preceding calendar year to make an Advance in accordance with
    Section 8.14 of the Pooling and Servicing Agreement.

(3) This Servicing Criterion applies to the Master Servicer only for
    transactions that contain any external credit enhancement or other support
    identified in Item 1114(a)(1) through (3) or Item 1115 of Regulation AB.

<PAGE>

                                         EXHIBIT S

                              Additional Form 10-D Disclosure

<TABLE>
<CAPTION>
------------------------------------------------ ---------------------------------------------
Item on Form 10-D                                     Party Responsible
------------------------------------------------ ---------------------------------------------
<S>                                                   <C>
Item 1: Distribution and Pool Performance             Master Servicer, Depositor
         Information

        Any information required by 1121 which
        is NOT included on the Distribution
        Date Statement
------------------------------------------------ ---------------------------------------------
Item 2: Legal Proceedings per Item 1117 of            (i) All parties to the Pooling and
        Regulation AB                                 Servicing Agreement, the Custodian,
                                                      each Servicer and, if applicable the
                                                      Special Servicer (as to themselves),
                                                      (ii) the Master Servicer as to the
                                                      issuing entity, (iii) the Depositor
                                                      as to the sponsor, any 1110(b)
                                                      originator, any 1100(d)(1) party

------------------------------------------------ ---------------------------------------------
Item 3: Sale of Securities and Use of Proceeds        Depositor
------------------------------------------------ ---------------------------------------------
Item 4: Defaults Upon Senior Securities               Master Servicer
------------------------------------------------ ---------------------------------------------
Item 5: Submission of Matters to a Vote of            Master Servicer, Trustee
         Security Holders
------------------------------------------------ ---------------------------------------------
Item 6: Significant Obligors of Pool Assets           Depositor, if applicable
------------------------------------------------ ---------------------------------------------
Item 7: Significant Enhancement Provider              Depositor, if applicable
         Information
------------------------------------------------ ---------------------------------------------
Item 8: Other Information                             Any party responsible for disclosure
                                                      items on Form 8-K
------------------------------------------------ ---------------------------------------------
Item 9: Exhibits                                      Depositor, Master Servicer
------------------------------------------------ ---------------------------------------------
</TABLE>

<PAGE>

                                         EXHIBIT T

                              Additional Form 10-K Disclosure

<TABLE>
<CAPTION>
------------------------------------------------ ---------------------------------------------
Item on Form 10-K                                      Party Responsible
------------------------------------------------ ---------------------------------------------
<S>                                                    <C>
Item 1B: Unresolved Staff Comments                     Depositor

------------------------------------------------ ---------------------------------------------
Item 9B:  Other Information                            Any party responsible for disclosure
                                                       items on Form 8-K
------------------------------------------------ ---------------------------------------------
Item 15: Exhibits, Financial Statement                 Master Servicer
         Schedules                                     Depositor
------------------------------------------------ ---------------------------------------------
Additional Item:                                       (i) All parties to the Pooling and
                                                       Servicing Agreement, the Custodian,
                                                       each Servicer and, if applicable the
                                                       Special Servicer (as to themselves),
                                                       (ii) the Master Servicer as to the
                                                       issuing entity, (iii) the Depositor
Disclosure per Item 1117 of Regulation AB              as to the sponsor, any 1110(b)
                                                       originator, any 1100(d)(1) party
------------------------------------------------ ---------------------------------------------
Additional Item:                                       (i) All parties to the Pooling and
                                                       Servicing Agreement, the Custodian,
                                                       each Servicer and, if applicable the
Disclosure per Item 1119 of Regulation AB              Special Servicer (as to themselves),
                                                       (ii) the Master Servicer as to the
                                                       issuing entity, (iii) the Depositor
                                                       as to the sponsor, any 1110(b)
                                                       originator, any 1100(d)(1) party, any
                                                       significant obligor, any credit
                                                       enhancement provider or derivative
                                                       counterparty
------------------------------------------------ ---------------------------------------------
Additional Item:                                       Depositor, if applicable

Disclosure per Item 1112(b) of Regulation AB
------------------------------------------------ ---------------------------------------------
Additional Item:                                       Depositor, if applicable

Disclosure per Items 1114(b) and 1115(b) of
Regulation AB
------------------------------------------------ ---------------------------------------------
</TABLE>

<PAGE>

                                         EXHIBIT U

                              Form 8-K Disclosure Information

<TABLE>
<CAPTION>
------------------------------------------------ ---------------------------------------------

Item on Form 8-K                                       Party Responsible
------------------------------------------------ ---------------------------------------------
<S>                                                    <C>

Item 1.01- Entry into a Material Definitive            All parties to the Pooling and
           Agreement                                   Servicing Agreement, each Servicer,
                                                       the Custodian and, if applicable, the
                                                       Special Servicer, as to each
                                                       agreement to which it is a party
------------------------------------------------ ---------------------------------------------
Item 1.02- Termination of a Material                   All parties to the Pooling and
           Definitive Agreement                        Servicing Agreement, each Servicer,
                                                       the Custodian and, if applicable, the
                                                       Special Servicer, as to each
                                                       agreement to which it is a party
------------------------------------------------ ---------------------------------------------
Item 1.03- Bankruptcy or Receivership                  (i) Depositor, as to itself, the
                                                       sponsor, any 1100(d)(1) party, any
                                                       significant obligor, any credit
                                                       enhancement provider or derivative
                                                       counterparty and any other
                                                       transaction party, to the extent
                                                       known to the Depositor, (ii) Trustee,
                                                       as to itself, (iii) each Servicer as
                                                       to itself, (iv) Master Servicer, as
                                                       to itself and any other transaction
                                                       party, to the extent known to the
                                                       Master Servicer
------------------------------------------------ ---------------------------------------------
Item 2.04- Triggering Events that Accelerate           Master Servicer
           or Increase a Direct Financial
           Obligation or an Obligation under
           an Off-Balance Sheet Arrangement
------------------------------------------------ ---------------------------------------------
Item 3.03- Material Modification to Rights of          Master Servicer
           Security Holders
------------------------------------------------ ---------------------------------------------
Item 5.03- Amendments of Articles of                   Master Servicer
           Incorporation or Bylaws; Change of
           Fiscal Year
------------------------------------------------ ---------------------------------------------
Item 6.01- ABS Informational and Computational         Depositor
           Material
------------------------------------------------ ---------------------------------------------
Item 6.02- Change of Servicer or Master                Servicer, Master Servicer
           Servicer
------------------------------------------------ ---------------------------------------------
Item 6.03- Change in Credit Enhancement or             Depositor/Master Servicer
           External Support
------------------------------------------------ ---------------------------------------------
Item 6.04- Failure to Make a Required                  Master Servicer
           Distribution
------------------------------------------------ ---------------------------------------------
Item 6.05- Securities Act Updating Disclosure          Depositor
------------------------------------------------ ---------------------------------------------
Item 7.01- Reg FD Disclosure                           Depositor
------------------------------------------------ ---------------------------------------------
Item 8.01-Other Events                                 Depositor, Master Servicer
------------------------------------------------ ---------------------------------------------
Item 9.01                                              Depositor, Master Servicer
------------------------------------------------ ---------------------------------------------
</TABLE>

<PAGE>

                                    EXHIBIT V

                       Additional Disclosure Notification

**SEND VIA FAX TO 410-715-2380 AND VIA EMAIL TO
CTS.SEC.NOTIFICATIONS@WELLSFARGO.COM AND VIA OVERNIGHT MAIL TO THE ADDRESS
IMMEDIATELY BELOW**

Wells Fargo Bank, N.A., as Master Servicer
9062 Old Annapolis Road
Columbia, Maryland 21045
Attn:  Corporate Trust Services- WFMBS 2007-AR8--SEC REPORT PROCESSING

RE:**[Additional Form [10-D][10-K] Disclosure][Form 8-K Disclosure
Information]** Required

Ladies and Gentlemen:

            In accordance with Section [ ] of the Pooling and Servicing
Agreement, dated as of November 29, 2007, among Wells Fargo Asset Securities
Corporation, as depositor, Wells Fargo Bank, N.A., as master servicer, and HSBC
Bank USA, National Association, as trustee, the undersigned, as [ ], hereby
notifies you that certain events have come to our attention that [will] [may]
need to be disclosed on Form [10-D][10-K][8-K].

Description of [Additional Form [10-D][10-K] Disclosure][Form 8-K Disclosure
Information]:
----------------------------------------------------------------------------

List of any Attachments hereto to be included in the Additional Form
[10-D][10-K] Disclosure][Form 8-K Disclosure Information]:
--------------------------------------------------------------------

            Any inquiries related to this notification should be directed to
[      ], phone number: [      ]; email address: [      ].

                                                      [NAME OF PARTY],
                                                       as [role]

                                                       By: _____________________
                                                           Name:
                                                           Title:EXHIBIT 10.1

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

                             WELLS FARGO BANK, N.A.

                                (Master Servicer)

                                       and

                             WELLS FARGO BANK, N.A.

                                   (Servicer)

                               SERVICING AGREEMENT

                          Dated as of November 29, 2007

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

<PAGE>

                                TABLE OF CONTENTS

                                    ARTICLE 1

                                   Definitions

Section 1.1 Definitions.........................................................
            ACH.................................................................
            Additional Form 10-D Disclosure.....................................
            Additional Form 10-K Disclosure.....................................
            Adjusted Tangible Net Worth.........................................
            Administration Disclosure...........................................
            Advance.............................................................
            Affiliate...........................................................
            Amounts Held for Future Distribution................................
            Applicable Unscheduled Principal Receipt Period.....................
            Appraisal Report....................................................
            ARM Loan............................................................
            Assigned Letter of Credit...........................................
            Assignment..........................................................
            Assumption..........................................................
            Balloon Amount......................................................
            Balloon Loan........................................................
            Bankruptcy Code.....................................................
            BIF.................................................................
            Borrower............................................................
            Business Day........................................................
            Buydown Agreement...................................................
            Buydown Funds.......................................................
            Capitalized Advance Amount..........................................
            Certificate Account.................................................
            Certificates........................................................
            Certificateholders..................................................
            Code................................................................
            Commission..........................................................
            Condominium Project.................................................
            Condominium Unit....................................................
            Converted Mortgage Loan.............................................
            Co-op Shares........................................................
            Credit Counseling Fee Advances......................................
            Current Value.......................................................
            Curtailment.........................................................
            Custodial Agreement.................................................
            Custodial Buydown Account...........................................
            Custodial PITI Account..............................................
            Custodial Principal and Interest (P&I) Account......................
            Custodial Subsidy Account...........................................
            Custodial Taxes and Insurance (T&I) Account.........................
            Custodian...........................................................
            Cut-Off Date........................................................
            Debt Service Reduction..............................................
            Deficient Valuation.................................................
            Delinquency/Delinquent..............................................
            Depositor...........................................................
            Determination Date..................................................
            Directly Operate....................................................
            Distribution Date...................................................
            Document Transfer Date..............................................
            Document Transfer Event.............................................
            Due Date............................................................
            Due-On-Sale Clause..................................................
            Eligible Account....................................................
            Eligible Custodial P&I Account......................................
            Eligible Investments................................................
            Errors and Omissions Policy.........................................
            Escrow Funds........................................................
            Escrow Item.........................................................
            Exchange Act........................................................
            FDIC................................................................
            FHA.................................................................
            FHLMC...............................................................
            Fidelity Bond.......................................................
            Final Scheduled Maturity Date.......................................
            Final Title Condition Report........................................
            Flood Insurance.....................................................
            FNMA................................................................
            Form 8-K............................................................
            Form 8-K Disclosure Information.....................................
            Form 10-D...........................................................
            Form 10-K...........................................................
            Full Unscheduled Principal Receipt..................................
            GNMA................................................................
            GPM (or GPARM) Loan.................................................
            Gross Margin........................................................
            Group...............................................................
            Hazard Insurance....................................................
            HUD.................................................................
            Index...............................................................
            Insurance Policy....................................................
            Insurance Proceeds..................................................
            Interest Adjustment Date............................................
            Letter of Credit....................................................
            Liquidation.........................................................
            Liquidation Proceeds................................................
            Liquidation Profits.................................................
            Loan Group..........................................................
            Loan Originator.....................................................
            Loan-to-Value (LTV).................................................
            Lost Note Affidavit.................................................
            Master Servicer.....................................................
            Master Servicer Loan Number.........................................
            Maximum Lifetime Mortgage Interest Rate.............................
            Maximum Negative Amortization Amount................................
            MERS................................................................
            Mid-Month Receipt Period............................................
            Minimum Lifetime Mortgage Interest Rate.............................
            Month End Interest..................................................
            Month End Interest Shortfall........................................
            Monthly Accounting Reports..........................................
            Monthly Payment.....................................................
            Monthly Remittance..................................................
            Mortgage Interest Rate..............................................
            Mortgage Loan.......................................................
            Mortgage Loan Documents.............................................
            Mortgage Loan Purchase Agreement....................................
            Mortgage Note.......................................................
            Mortgage Note Assumption Rider......................................
            Mortgage Pass-Through Certificates..................................
            Mortgaged Property..................................................
            Mortgagee...........................................................
            Net Mortgage Interest Rate..........................................
            Non-Assigned Letter of Credit.......................................
            Non-Recoverable Advance.............................................
            Notice of Periodic Adjustment.......................................
            Officer.............................................................
            Officers Certificate...............................................
            Opinion of Counsel..................................................
            Owner Mortgage Loan File............................................
            P&I Advance.........................................................
            Partial Liquidation Proceeds........................................
            Partial Liquidation Receipt Period..................................
            Partial Unscheduled Principal Receipt...............................
            Payment Adjustment Date.............................................
            Periodic Payment Cap................................................
            Periodic Rate Cap...................................................
            Person..............................................................
            PITI Funds..........................................................
            PITI Loan...........................................................
            Pledge Holder.......................................................
            Pledged Asset Mortgage Loan.........................................
            PMI Advance.........................................................
            Pool Insurance......................................................
            Pool Insurer........................................................
            Pooling and Servicing Agreement.....................................
            Preliminary Title Report............................................
            Prepayment In Full..................................................
            Primary Mortgage Insurance..........................................
            Primary Mortgage Insurer............................................
            Prior Month Receipt Period..........................................
            Property Inspection Report..........................................
            Prospectus..........................................................
            Prudent Servicing Practices.........................................
            PUD (Planned Unit Development)......................................
            PUD Unit............................................................
            Purchase Price......................................................
            Rating Agency.......................................................
            Real Estate Owned (REO).............................................
            Realized Loss.......................................................
            Recovery............................................................
            Reference Bank......................................................
            Regulation AB.......................................................
            Relevant Servicing Criteria.........................................
            REMIC...............................................................
            REMIC Provisions....................................................
            Remittance Date.....................................................
            Rents from Real Property............................................
            REO Disposition.....................................................
            REO Disposition Period..............................................
            Reportable Event....................................................
            Representing Party..................................................
            Retained Mortgage Loan File.........................................
            SAIF................................................................
            Sarbanes-Oxley Certification........................................
            Scheduled Principal Balance.........................................
            Securities Act......................................................
            Security Instrument.................................................
            Servicer............................................................
            Servicer Loan Mortgage Number.......................................
            Servicer Modification...............................................
            Servicer Mortgage Loan File.........................................
            Servicer Mortgage Loan Schedule.....................................
            Servicing Criteria..................................................
            Servicing Fee.......................................................
            Servicing Fee Percentage............................................
            Single Family Property..............................................
            Subcontractor.......................................................
            Subservicer.........................................................
            Subsidy Funds.......................................................
            Subsidy Loan........................................................
            Tangible Net Worth..................................................
            T&I Advance.........................................................
            Threshold Amount....................................................
            Title Insurance.....................................................
            Transfer of Ownership...............................................
            Trust...............................................................
            Trust Administrator.................................................
            Trustee.............................................................
            Type 1 Mortgage Loans...............................................
            Type 2 Mortgage Loans...............................................
            Unpaid Principal Balance............................................
            Unscheduled Principal Receipt.......................................
            Value...............................................................
            Wells Fargo Bank....................................................

                                    ARTICLE 2

                                  Construction

Section 2.1    Legal Construction...............................................
     2.1.1.    Compliance with Applicable Law...................................
     2.1.2.    Potential Conflict...............................................
     2.1.3.    Consistent Legal Compliance......................................
     2.1.4.    General Interpretive Rules.......................................
     2.1.5.    Construction of Provisions.......................................

Section 2.2    Servicer Practices...............................................
     2.2.1.    Prudent Servicing Practices......................................
     2.2.2.    Non-Discrimination Practices.....................................

Section 2.3    General Provisions...............................................
     2.3.1.    Servicers Agreement.............................................
     2.3.2.    Term of Agreement................................................
     2.3.3.    Amended Mortgage Loan Schedule...................................
     2.3.4.    Assignment and Replacement.......................................
     2.3.5.    Notices..........................................................
     2.3.6.    Change of Accountants............................................

                                    ARTICLE 3

                                REMIC Compliance

Section 3.1    General..........................................................
     3.1.1.    Applicability....................................................
     3.1.2.    Modifications of Mortgage........................................
     3.1.3.    Indemnification with Respect to Certain
               Taxes and Loss of REMIC Status...................................

Section 3.2    REO Qualification................................................
     3.2.1.    Foreclosure Property.............................................
     3.2.2.    Foreclosure Property Qualification
               Restrictions.....................................................
     3.2.3.    REO Disposition..................................................

Section 3.3    Prohibited Transactions and Activities...........................
     3.3.1.    Mortgage Loan Disposition Restriction............................
     3.3.2.    Personal Property................................................

Section 3.4    Eligible Investments.............................................
     3.4.1.    Custodial Account................................................
     3.4.2.    Escrow Account...................................................

                                    ARTICLE 4

                             Servicer Considerations

Section 4.1    Servicer Eligibility Standards...................................
     4.1.1.    Regulatory Approvals and Licensing...............................
     4.1.2.    Net Worth and Portfolio Requirements.............................
     4.1.3.    Auditors Opinion; Other Annual Reports and
               Exchange Act Reporting...........................................
     4.1.4.    Use of Subservicers and Subcontractors...........................
     4.1.5.    Servicing Experience.............................................
     4.1.6.    Material Changes.................................................

Section 4.2    Errors and Omissions Insurance...................................
     4.2.1.    E & O Requirement................................................
     4.2.2.    E & O Scope......................................................
     4.2.3.    E & O Policy Maintenance.........................................
     4.2.4.    E & O Deductible.................................................
     4.2.5.    E & O Qualifications.............................................

Section 4.3    Fidelity Bond Coverage...........................................
     4.3.1.    Fidelity Bond Requirement........................................
     4.3.2.    Fidelity Bond Coverage...........................................
     4.3.3.    Fidelity Bond Scope..............................................
     4.3.4.    Fidelity Bond Maintenance........................................
     4.3.5.    Fidelity Bond Deductible.........................................
     4.3.6.    Fidelity Bond Rating Requirement.................................

Section 4.4    Servicers Liability.............................................
     4.4.1.    Liability Exposure...............................................
     4.4.2.    Scope of Liability...............................................

Section 4.5    Indemnification..................................................
     4.5.1.    Scope of Indemnity by Servicer...................................
     4.5.2.    Survival of Indemnity............................................

Section 4.6    Servicers Compensation; Indemnification.........................
     4.6.1.    Servicing Fee Amount.............................................
     4.6.2.    Servicing Fee Source.............................................
     4.6.3.    Indemnification of Servicer......................................

                                    ARTICLE 5

                         Representations and Warranties

Section 5.1    General..........................................................
     5.1.1.    Reliance.........................................................
     5.1.2.    Survival of Representations and Warranties.......................
     5.1.3.    Breach of Representation or Warranty.............................
     5.1.4.    Assignment of Representations and Warranties.....................

Section 5.2    Servicer Representations and Warranties..........................
     5.2.1.    Qualification of Servicer........................................
     5.2.2.    Requisite........................................................
     5.2.3.    No Conflicts.....................................................
     5.2.4.    Enforceable Agreement............................................
     5.2.5.    No Consents......................................................
     5.2.6.    Agency Approval..................................................
     5.2.7.    Financial Condition..............................................
     5.2.8.    Servicing Practices..............................................
     5.2.9.    No Impairment....................................................
     5.2.10.   No Inquiries.....................................................
     5.2.11.   No Performance Triggering Event..................................
     5.2.12.   No Termination...................................................
     5.2.13.   No Material Noncompliance........................................
     5.2.14.   Servicing Policies and Procedures................................
     5.2.15.   No Affiliations..................................................
     5.2.16.   Legal or Governmental Proceedings................................
     5.2.17.   Custodial and Escrow Accounts Current............................
     5.2.18.   Insurance Maintenance............................................

                                    ARTICLE 6

                              Custodial Accounting

Section 6.1    In General.......................................................
     6.1.1.    Custodial Account Establishment..................................
     6.1.2.    Custodial Account Separateness...................................
     6.1.3.    Custodial Account Maintenance....................................
     6.1.4.    Escrow Investment................................................
     6.1.5.    Clearing Account.................................................
     6.1.6.    Custodial Buydown Account........................................
     6.1.7.    Certificate Account..............................................
     6.1.8.    Custodial Subsidy Account........................................
     6.1.9.    Custodial PITI Account...........................................

Section 6.2    Custodial P&I Account............................................
     6.2.1.    Mandatory Deposits...............................................
     6.2.2.    Optional Deposits................................................
     6.2.3.    Permissible Withdrawals..........................................
     6.2.4.    Account Beneficiary..............................................
     6.2.5.    Use of Accounts..................................................

Section 6.3    Custodial T&I Account............................................
     6.3.1.    Mandatory Deposits...............................................
     6.3.2.    Permissible Withdrawals..........................................
     6.3.3.    Account Requirements.............................................
     6.3.4.    Account Balance..................................................

Section 6.4    Eligible Account Investments.....................................
     6.4.1.    Eligible Investments Permitted...................................
     6.4.2.    Eligible Investment Restrictions.................................
     6.4.3.    Eligible Investment Income.......................................
     6.4.4.    Eligible Investment Losses.......................................
     6.4.5.    Eligible Investments Reports.....................................
     6.4.6.    Inter-Company Uses of Funds......................................

                                    ARTICLE 7

                            Mortgage Loan Accounting

Section 7.1    In General.......................................................
     7.1.1.    Mortgage Loan Accounting Practices...............................
     7.1.2.    Record Keeping...................................................
     7.1.3.    Record Review....................................................

Section 7.2    Mortgage Loan Records............................................
     7.2.1.    Account Records..................................................
     7.2.2.    Account Record Information.......................................
     7.2.3.    Accounting Practice..............................................
     7.2.4.    Access to Certain Documentation and
               Information Regarding the Mortgage Loans.........................

Section 7.3    Accounting Procedures............................................
     7.3.1.    Principal and Interest Computation...............................
     7.3.2.    Amortization Requirement.........................................
     7.3.3.    Negative Amortization............................................
     7.3.4.    Interest Calculations............................................
     7.3.5.    Buydown Loans....................................................

Section 7.4    Application Procedure............................................
     7.4.1.    Application Priority.............................................
     7.4.2.    [Reserved].......................................................
     7.4.3.    Advance Payments.................................................

Section 7.5    Curtailments.....................................................
     7.5.1.    Curtailment Amount...............................................
     7.5.2.    Curtailment Application..........................................
     7.5.3.    Effect of Curtailment............................................
     7.5.4.    Curtailment Transmission.........................................

Section 7.6    Liquidations.....................................................
     7.6.1.    Month End Interest...............................................
     7.6.2.    Liquidation Reports..............................................
     7.6.3.    Deposit of Funds.................................................
     7.6.4.    Document Request.................................................

Section 7.7    Realized Losses..................................................
     7.7.1.    Liquidation Realized Loss Determination..........................
     7.7.2.    Bankruptcy Realized Loss Determination...........................
     7.7.3.    Reporting Requirement............................................
     7.7.4.    Servicers Liability.............................................

                                    ARTICLE 8

                                    ARM Loans

Section 8.1    ARM Loan Servicing...............................................
     8.1.1.    In General.......................................................
     8.1.2.    Servicers Liability.............................................
     8.1.3.    Adjustment Reports...............................................
     8.1.4.    Substitute Index.................................................

Section 8.2    Notice of Periodic Adjustment....................................
     8.2.1.    Notice Requirement...............................................
     8.2.2.    Notice Contents..................................................

Section 8.3    ARM Loan Conversion..............................................
     8.3.1.    Servicers Determination.........................................
     8.3.2.    Purchase by Servicer.............................................

                                    ARTICLE 9

                               Mortgage Loan Files

Section 9.1    Owner Mortgage Loan Files and Retained Mortgage
               Loan Files.......................................................
     9.1.1.    Owner Mortgage Loan File and Retained
               Mortgage Loan File Requirements..................................
     9.1.2.    Custodian........................................................
     9.1.3.    Release of Documents from Owner Mortgage
               Loan File or Retained Mortgage Loan File.........................
     9.1.4.    Execution by Trustee.............................................
     9.1.5.    Representing Party Officers Certificate.........................
     9.1.6.    Custodial Fees...................................................

Section 9.2    Servicer Mortgage Loan Files.....................................
     9.2.1.    Servicer Mortgage Loan File Requirements.........................
     9.2.2.    Servicer Mortgage Loan File Access...............................
     9.2.3.    Alternate Media..................................................

Section 9.3    Requisite Form...................................................
     9.3.1.    Form of Endorsements.............................................
     9.3.2.    Form of Assignment...............................................

                                   ARTICLE 10

                                     Escrows

Section 10.1   Escrow Criteria..................................................
     10.1.1.   Escrow Requirement...............................................
     10.1.2.   Mortgage Loans without Escrow....................................

Section 10.2   Payment of Escrow Items..........................................
     10.2.1.   Escrow Payment Obligation........................................
     10.2.2.   Escrow Item Payments.............................................
     10.2.3.   Escrow Fund Insufficiency........................................
     10.2.4.   Nonpayment Notice................................................

Section 10.3   Escrow Fund Determination........................................
     10.3.1.   Escrow Funds Analysis............................................
     10.3.2.   Escrow Fund Surplus..............................................
     10.3.3.   Escrow Fund Deficiency...........................................

Section 10.4   Records..........................................................
     10.4.1.   Escrow Funds Records.............................................
     10.4.2.   Escrow Obligations Records.......................................

Section 10.5   Escrow Waiver....................................................
     10.5.1.   Waiver Conditions................................................
     10.5.2.   Waiver Rescission................................................

                                   ARTICLE 11

                       Collection and Servicing Practices

Section 11.1   General Servicing Requirements...................................
     11.1.1.   Servicing Practices..............................................
     11.1.2.   Tax Returns and Other Reports....................................
     11.1.3.   Servicer Internal Controls.......................................
     11.1.4.   Pool Insurance Compliance........................................
     11.1.5.   Primary Mortgage Insurance Compliance............................
     11.1.6.   Letter of Credit Compliance......................................

Section 11.2   Delegation of Duties.............................................
     11.2.1.   Permissible Delegations..........................................
     11.2.2.   Delegees Qualifications.........................................
     11.2.3.   Responsibility for Costs.........................................
     11.2.4.   Servicers Liability.............................................

Section 11.3   Due-on-Sale Clause Enforcement...................................
     11.3.1.   Enforcement Requirement..........................................
     11.3.2.   [Reserved].......................................................
     11.3.3.   Approval Requirement.............................................
     11.3.4.   Exempt Transactions..............................................

Section 11.4   Assumptions......................................................
     11.4.1.   Assumption Requirements..........................................
     11.4.2.   Approval and Release.............................................
     11.4.3.   Assumption Agreement Provided to Custodian.......................
     11.4.4.   Assumption Fees..................................................
     11.4.5.   Disclosure Requirement...........................................

Section 11.5   Partial Releases and Easements...................................
     11.5.1.   Prerequisites....................................................
     11.5.2.   Release or Modification of Lien..................................
     11.5.3.   Master Servicers Approval.......................................

Section 11.6   Recordation of Assignments.......................................
     11.6.1.   Recordation Requirement..........................................
     11.6.2.   Extension of Recording Period....................................
     11.6.3.   Delivery Requirement.............................................
     11.6.4.   Waiver of Recordation............................................

Section 11.7   General Servicing Considerations.................................
     11.7.1.   Abandonment......................................................
     11.7.2.   Buydown Funds....................................................
     11.7.3.   Maintenance of Records...........................................
     11.7.4.   Eminent Domain...................................................
     11.7.5.   Late Charges.....................................................

Section 11.8   Borrower Bankruptcy..............................................
     11.8.1.   Servicers Duty..................................................
     11.8.2.   Responsibility for Costs.........................................
     11.8.3.   Challenge Bankruptcy Reductions..................................
     11.8.4.   Bankruptcy Adjustments...........................................
     11.8.5.   Bankruptcy Plan Surveillance.....................................

                                   ARTICLE 12

                             Delinquency Management

Section 12.1   In General.......................................................
     12.1.1.   Servicing Practices..............................................
     12.1.2.   Servicers Capabilities..........................................
     12.1.3.   Servicing Objectives.............................................
     12.1.4.   Servicers Expenses..............................................

Section 12.2   Delinquency Servicing Procedures.................................
     12.2.1.   Late Notice......................................................
     12.2.2.   Telephonic Inquiry...............................................
     12.2.3.   Notice of Default................................................
     12.2.4.   Borrower Interview...............................................
     12.2.5.   Continuing Contacts..............................................
     12.2.6.   Property Inspection..............................................

Section 12.3   Relief of Borrowers..............................................
     12.3.1.   Servicers Role..................................................
     12.3.2.   Servicers Discretion............................................
     12.3.3.   Relief Requirement...............................................
     12.3.4.   Primary Mortgage Insurance Considerations........................
     12.3.5.   Responsibility for Costs.........................................
     12.3.6.   Forbearance Plan.................................................
     12.3.7.   Accommodation Limitations........................................
     12.3.8.   Pool Insurance Considerations....................................

Section 12.4   Special Delinquency Servicing Considerations.....................
     12.4.1.   Advance Responsibility During Delinquency........................
     12.4.2.   Primary Mortgage Insurance Compliance............................
     12.4.3.   Pool Insurance Compliance........................................

                                   ARTICLE 13

                           Foreclosure Administration

Section 13.1   Foreclosure Prerequisites........................................
     13.1.1.   Foreclosure/Alternative to Foreclosure
               Initiation.......................................................
     13.1.2.   Foreclosure Expenses.............................................
     13.1.3.   Hazardous Wastes.................................................

Section 13.2   Deed-in-Lieu of Foreclosure......................................
     13.2.1.   Conditions.......................................................
     13.2.2.   Subsequent Actions...............................................

Section 13.3   Actions Prior to Foreclosure.....................................
     13.3.1.   Notice Requirements..............................................
     13.3.2.   Initiation of Proceedings........................................
     13.3.3.   Short Sale of Defaulted Mortgage Loans in
               Lieu of Foreclosure..............................................

Section 13.4   Foreclosure Procedures...........................................
     13.4.1.   Foreclosure Expenses.............................................
     13.4.2.   Bidding Instructions.............................................
     13.4.3.   Buydown Funds Use................................................
     13.4.4.   Servicers Responsibilities......................................
     13.4.5.   Conveyance Documents.............................................

Section 13.5   Mortgage Loan Reinstatement......................................
     13.5.1.   Borrowers Full Payment..........................................
     13.5.2.   Borrowers Partial Payment.......................................
     13.5.3.   Obligations upon Reinstatement...................................
     13.5.4.   Certain Assumptions Permitted....................................

                                   ARTICLE 14

                               REO Administration

Section 14.1   General Provisions...............................................
     14.1.1.   REO Action Plan..................................................

Section 14.2   REO Servicing....................................................
     14.2.1.   REO Servicing Requirements.......................................
     14.2.2.   Servicers Responsibilities......................................
     14.2.3.   [Reserved].......................................................

Section 14.3   REO Records and Reports..........................................
     14.3.1.   Records Retention................................................
     14.3.2.   Evidence of Title................................................
     14.3.3.   REO Expenses.....................................................
     14.3.4.   REO Documents....................................................

Section 14.4   REO Marketing....................................................
     14.4.1.   REO Marketing Efforts............................................
     14.4.2.   REO Sales........................................................
     14.4.3.   Primary Mortgage Insurance Considerations........................
     14.4.4.   Master Servicer Instructions.....................................
     14.4.5.   Pool Insurance Considerations....................................

Section 14.5   REO Rehabilitation...............................................
     14.5.1.   REO Rehabilitation Requirement...................................
     14.5.2.   [Reserved].......................................................
     14.5.3.   Written Contractor Bids..........................................
     14.5.4.   Primary Mortgage Insurance Considerations........................

Section 14.6   REO Administration Failure.......................................
     14.6.1.   Servicer Removal.................................................
     14.6.2.   Servicers Continuing Obligations................................
     14.6.3.   Servicers Duty to Compensate....................................

                                   ARTICLE 15

                         Insurance and Letter of Credit

Section 15.1   General Provisions...............................................
     15.1.1.   Insurance Requirements...........................................
     15.1.2.   Uninsured Losses.................................................
     15.1.3.   Servicers Obligation to Maintain Insurance......................
     15.1.4.   Insurance Notices................................................
     15.1.5.   Default by Insurer...............................................
     15.1.6.   Insurance Carrier Rating.........................................
     15.1.7.   Insurance Carrier Licenses.......................................
     15.1.8.   Risk Exposure....................................................
     15.1.9.   Evidence of Insurance............................................

Section 15.2   Primary Mortgage Insurance.......................................
     15.2.1.   Primary Mortgage Insurance Requirement...........................
     15.2.2.   Primary Mortgage Insurance Coverage..............................
     15.2.3.   Primary Mortgage Insurer Downgrading.............................
     15.2.4.   Primary Mortgage Insurance Cancellation..........................
     15.2.5.   Primary Mortgage Insurance Claims................................

Section 15.3   Hazard Insurance.................................................
     15.3.1.   Hazard Insurance Requirement.....................................
     15.3.2.   Hazard Insurance Coverage........................................
     15.3.3.   Hazard Insurance Deductible......................................
     15.3.4.   Hazard Insurance Vacancy Coverage................................
     15.3.5.   Hazard Insurance Mortgagee Provisions............................

Section 15.4   Flood Insurance..................................................
     15.4.1.   Flood Insurance Requirement......................................
     15.4.2.   Flood Insurance Coverage.........................................
     15.4.3.   Flood Insurance Deductible.......................................

Section 15.5   Title Insurance..................................................
     15.5.1.   Servicers Obligations...........................................
     15.5.2.   Policy Custody...................................................
     15.5.3.   Title Insurance Claims...........................................

Section 15.6   Insurance Loss Settlements.......................................
     15.6.1.   Settlement Approval..............................................
     15.6.2.   Settlement Disbursements.........................................
     15.6.3.   Settlement Funds.................................................
     15.6.4.   Settlement Notice................................................
     15.6.5.   Continuing Coverage..............................................
     15.6.6.   Property Inspections.............................................

Section 15.7   Letters of Credit................................................
     15.7.1.   Letter of Credit Draws...........................................
     15.7.2.   Draws in the Event of Servicer Termination.......................

                                   ARTICLE 16

                          Condominium and PUD Insurance

Section 16.1   General Provisions...............................................
     16.1.1.   Applicability....................................................
     16.1.2.   Premiums.........................................................
     16.1.3.   Deductible Reserves..............................................
     16.1.4.   Name of Insured..................................................
     16.1.5.   Mortgagee Clause.................................................
     16.1.6.   Reconstruction Coverage..........................................

Section 16.2   Common Area Multiple Peril Insurance.............................
     16.2.1.   Common Area Multiple Peril Insurance
               Requirement......................................................
     16.2.2.   Common Area Multiple Peril Insurance Coverage....................
     16.2.3.   Common Area Multiple Peril Insurance
               Deductible.......................................................
     16.2.4.   Boiler and Machinery Coverage....................................

Section 16.3   Blanket Hazard Insurance.........................................
     16.3.1.   Blanket Hazard Insurance Requirement.............................
     16.3.2.   Blanket Hazard Insurance Coverage................................
     16.3.3.   Blanket Hazard Insurance Deductible..............................

Section 16.4   Common Area Comprehensive General Liability
               (CGL) Insurance..................................................
     16.4.1.   Common Area CGL Insurance Requirement............................
     16.4.2.   Common Area CGL Insurance Coverage...............................

Section 16.5   Owners Association Fidelity Insurance...........................
     16.5.1.   Owners Association Fidelity Insurance
               Requirement......................................................
     16.5.2.   Owners Association Fidelity Insurance
               Coverage.........................................................

Section 16.6   Blanket Flood Insurance..........................................
     16.6.1.   Blanket Flood Insurance Requirement..............................
     16.6.2.   Blanket Flood Insurance Coverage.................................
     16.6.3.   Blanket Flood Insurance Deductible...............................

                                   ARTICLE 17

                                    Advances

Section 17.1   Principal and Interest Advances..................................
     17.1.1.   P&I Advance Requirement..........................................
     17.1.2.   P&I Advance Limitation...........................................
     17.1.3.   P&I Advance Recovery.............................................
     17.1.4.   Advance During Bankruptcy and Foreclosure........................

Section 17.2   Foreclosure Advances.............................................
     17.2.1.   Foreclosure Advance Requirement..................................
     17.2.2.   Foreclosure Advance Limitation...................................
     17.2.3.   Foreclosure Advance Recovery.....................................
     17.2.4.   Foreclosure Advance Records......................................

Section 17.3   Tax & Insurance Advances.........................................
     17.3.1.   T&I Advance Requirement..........................................
     17.3.2.   T&I Advance Recovery.............................................
     17.3.3.   T&I Advance Limitation...........................................
     17.3.4.   Advance During Bankruptcy and Foreclosure........................

Section 17.4   Non-Recoverable Advances.........................................
     17.4.1.   Ordinary Recovery................................................
     17.4.2.   Final Recovery...................................................
     17.4.3.   Non-Recoverable Advance Determination............................

Section 17.5   Failure to Advance...............................................
     17.5.1.   Grounds for Termination..........................................
     17.5.2.   Servicer Reimbursement...........................................
     17.5.3.   Servicer Notification............................................

Section 17.6   Rehabilitation Advance...........................................
     17.6.1.   Rehabilitation Advance Requirement...............................
     17.6.2.   Rehabilitation Advance Limitation................................
     17.6.3.   Rehabilitation Advance Recovery..................................

Section 17.7   PMI Advances.....................................................
     17.7.1.   PMI Advance Option...............................................
     17.7.2.   PMI Advance Recovery.............................................

Section 17.8   Credit Counseling Fee Advances...................................
     17.8.1.   Credit Counseling Fee Advance Option.............................
     17.8.2.   Credit Counseling Fee Advance Recovery...........................

                                   ARTICLE 18

                             Reporting Requirements

Section 18.1   Monthly Accounting Reports.......................................
     18.1.1.   Monthly Accounting Report Requirement............................
     18.1.2.   Monthly Accounting Report Elements...............................
     18.1.3.   Automated Reports................................................
     18.1.4.   Electronic Reporting.............................................
     18.1.5.   Machine Readable Records.........................................

Section 18.2   Account Reconciliations..........................................
     18.2.1.   Reconciliation Preparation.......................................
     18.2.2.   Account Records..................................................

Section 18.3   Monthly Remittance Requirements..................................
     18.3.1.   Remittance of Funds..............................................
     18.3.2.   Servicer Compensation............................................

                               ARTICLE 19

                 Transfers and Termination of Servicing

Section 19.1   Transfer of Servicing............................................
     19.1.1.   Transfer Prohibition.............................................
     19.1.2.   Transfer Request.................................................
     19.1.3.   Servicer Liability...............................................
     19.1.4.   Master Servicers Determination..................................

Section 19.2   Termination of Servicing.........................................
     19.2.1.   Grounds for Termination..........................................
     19.2.2.   Trustee Notification.............................................
     19.2.3.   Servicer Termination.............................................
     19.2.4.   Consequences of Termination......................................
     19.2.5.   Effect of Termination............................................
     19.2.6.   Custodial Account Threshold Reduction............................
     19.2.7.   Expenses of Termination..........................................

                                   ARTICLE 20

                            Miscellaneous Provisions

Section 20.1   Amendments.......................................................
     20.1.1.   Unilateral Authority.............................................
     20.1.2.   Consensual Amendment.............................................
     20.1.3.   Trustee Notification.............................................
     20.1.4.   Trustee Disapproval..............................................

Section 20.2   General Construction.............................................
     20.2.1.   Binding Nature...................................................
     20.2.2.   Entire Agreement.................................................
     20.2.3.   Governing Law....................................................
     20.2.4.   Indulgences Not Waivers..........................................
     20.2.5.   Titles Not to Affect Interpretation..............................
     20.2.6.   Provisions Severable.............................................
     20.2.7.   Servicer an Independent Contractor...............................
     20.2.8.   Third Party Beneficiary..........................................
     20.2.9.   Counterparts.....................................................

Section 20.3   Regulation AB Compliance; Intent of Parties;
               Reasonableness...................................................

EXHIBIT A   Wells Fargo & Company Master Guarantee Agreement
            Regarding Custodial P&I Account Funds
EXHIBIT B   Form of Annual Certification
EXHIBIT C   Subservicer Information

<PAGE>

      This Servicing Agreement, made as of this 29th day of November, 2007
(the "Agreement"), between Wells Fargo Bank, N.A., a national banking
association (the "Servicer") and Wells Fargo Bank, N.A., a national banking
association, (the "Master Servicer"), recites and provides as follows:

                                   RECITALS

      WHEREAS, the Servicer is engaged in the business of servicing
residential mortgage loans and the Servicer desires to be retained to service
the Mortgage Loans identified on the Servicer Mortgage Loan Schedule subject
to and in accordance with the terms of this Agreement; and

      WHEREAS, the Master Servicer, acting pursuant to the Pooling and
Servicing Agreement related to the Wells Fargo Asset Securities Corporation,
Mortgage Pass-Through Certificates, Series 2007-AR8, will supervise, monitor
and oversee the performance of the Servicer under this Agreement.

      NOW THEREFORE, in consideration of the mutual promises, covenants,
representations and warranties hereinafter set forth, and for other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the Servicer and the Master Servicer agree as follows:

                                    ARTICLE 1

                                   Definitions

   Section 1.1 Definitions.

      ACH: Automated Clearing House.

      Additional Form 10-D Disclosure: As defined in the Pooling and
Servicing Agreement.

      Additional Form 10-K Disclosure: As defined in the Pooling and
Servicing Agreement.

      Adjusted Tangible Net Worth: As of the date of determination thereof,
the sum of: (i) Servicer's Tangible Net Worth; plus (ii) one percent (1%) of
the amount of Servicer's servicing portfolio, as determined by the Master
Servicer in the Master Servicer's reasonable discretion.

      Administration Disclosure: With respect to a Pledged Asset Mortgage
Loan, the Pledged Asset Mortgage Loan Administration and Information Sharing
Disclosure and Acknowledgment executed by the related Borrower.

      Advance: Any payment, including Credit Counseling Fee Advances, made
with respect to a Mortgage Loan or the related Mortgaged Property by the
Servicer from its own funds made in the nature of an advance pursuant to the
provisions of this Agreement.

      Affiliate: Any person or entity controlling, controlled by or under
common control with a specified entity. The term "control" means the power to
direct the management and policies of a person or entity, directly or
indirectly, whether through ownership of voting securities, by contract or
otherwise. "Controlling" and "controlled" shall have meanings correlative to
the foregoing.

      Amounts Held for Future Distribution: As to any Remittance Date,
amounts on account of (i) all Unscheduled Principal Receipts received after
the last day of the Applicable Unscheduled Principal Receipt Period ending in
the month of such Remittance Date and all related payments of interest on
such principal prepayments and amounts received from the Servicer or a
Representing Party in the month of such Remittance Date as the Purchase Price
for any repurchased Mortgage Loan and (ii) payments which represent early
receipt of scheduled payments of principal and interest due on a date or
dates subsequent to the related Due Date.

      Applicable Unscheduled Principal Receipt Period: With respect to the
Type 1 Mortgage Loans and both Full Unscheduled Principal Receipts and
Partial Unscheduled Principal Receipts, the Mid-Month Receipt Period. With
respect to the Type 2 Mortgage Loans and both Full Unscheduled Principal
Receipts and Partial Unscheduled Principal Receipts, the Prior Month Receipt
Period.

      Appraisal Report: A report setting forth the fair market value of a
Mortgaged Property as determined by an appraiser who, at the time the
appraisal was conducted, met the minimum qualifications of FNMA and FHLMC for
appraisers of conventional residential mortgage loans.

      ARM Loan: A Mortgage Loan, if any, the Mortgage Interest Rate of which
is subject to periodic adjustment in accordance with the terms of the related
Mortgage Note.

      Assigned Letter of Credit: A Letter of Credit related to a Pledged
Asset Mortgage Loan originated on or after June 14, 2002 where the named
beneficiary has been changed from Wells Fargo Bank to the Trustee.

      Assignment: The document which transfers all the rights of the secured
party pursuant to a Security Instrument to a transferee for valid
consideration.

      Assumption: The process whereby, on sale or transfer of a legal or
beneficial interest in a Mortgaged Property, the new owner of such Mortgaged
Property becomes legally obligated under the terms of the related existing
Security Instrument, Mortgage Note and any addenda and riders to such
Security Instrument or Mortgage Note. Subsequent to the Assumption, the new
owner of the property shall be deemed to be the Borrower under the related
Mortgage Loan Documents.

      Balloon Amount: The remaining principal balance to be paid at maturity
of a Balloon Loan by the related Borrower pursuant to the terms of the
related Mortgage Note.

      Balloon Loan: A Mortgage Loan, if any, which amortizes its principal
payments over a period which is longer than the stated maturity of such
Mortgage Loan pursuant to the terms of the related Mortgage Note so as to
require the payment of the Balloon Amount at maturity in order to retire the
Mortgage Loan.

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

      BIF: The Bank Insurance Fund.

      Borrower: The individual obligated to repay a Mortgage Loan. (The
Borrower may be the beneficiary or beneficiaries of an Illinois land trust
when the Mortgaged Property is located in Illinois.)

      Business Day: Any day other than (i) a Saturday or a Sunday, or (ii) a
legal holiday in the City of New York, State of Maryland, State of Minnesota
or State of Iowa or (iii) a day on which banking institutions in the City of
New York, or the State of Maryland, State of Minnesota or State of Iowa are
authorized or obligated by law or executive order to be closed.

      Buydown Agreement: An agreement governing the application of Buydown
Funds with respect to a Mortgage Loan.

      Buydown Funds: Money advanced by a builder, seller or other interested
party to reduce a Borrower's Monthly Payment during the initial years of a
Mortgage Loan.

      Capitalized Advance Amount: As of any date, the amount of Advances that
have been added to the unpaid principal balance of a Mortgage Loan in
connection with a Servicer Modification.

      Certificate Account: A segregated custodial account established by the
Master Servicer into which the Servicer shall remit funds from the related
Custodial P&I Account.

      Certificates: As defined in the Pooling and Servicing Agreement.

      Certificateholders: As defined in the Pooling and Servicing Agreement.

      Code: The Internal Revenue Code of 1986, as it may be amended from time
to time, any successor statutes thereto, and applicable U.S. Department of
the Treasury temporary or final regulations promulgated thereunder.

      Commission: The United States Securities and Exchange Commission.

      Condominium Project: Real estate including the separate ownership in
fee, or on a satisfactory leasehold estate, of a particular residential unit
with an indivisible interest in the real estate designated for common
ownership strictly by unit owners.

      Condominium Unit: A Single Family Property within a Condominium Project.

      Converted Mortgage Loan: An ARM Loan with respect to which the Borrower
has complied with the applicable requirements of the related Mortgage Note to
convert the related Mortgage Interest Rate to a fixed rate of interest, and
the Servicer has processed such conversion.

      Co-op Shares: Shares issued by private non-profit housing corporations.

      Credit Counseling Fee Advances: With respect to a Mortgage Loan in
default or as to which a default is reasonably foreseeable, fees advanced by
the Servicer to an unaffiliated credit counseling organization in connection
with any credit counseling services, including but not limited to counseling
regarding consumer credit, money and debt management and budgeting, used to
aid the Borrower of such Mortgage Loan with respect to payments on such
Mortgage Loan.

      Current Value: The appraised value of the related Mortgaged Property
(a) from an Appraisal Report conducted within six (6) months of the use of
such value under this Agreement or (b) determined by such other method
acceptable to the Master Servicer.

      Curtailment: A partial prepayment by the Borrower of principal on a
Mortgage Loan that otherwise is current, which prepayment is not accompanied
by an amount representing the full amount of scheduled interest due on the
related Mortgage Loan.

      Custodial Agreement: As defined in the Pooling and Servicing Agreement.

      Custodial Buydown Account: An account maintained by the Servicer
specifically to hold all Buydown Funds to be applied to individual Mortgage
Loans.

      Custodial PITI Account: An account maintained by the Servicer
specifically to hold all PITI Funds to be applied to individual Mortgage
Loans.

      Custodial Principal and Interest (P&I) Account: An account maintained
by the Servicer, specifically for the collection of principal and interest,
Insurance Proceeds, Liquidation Proceeds and other amounts received with
respect to Mortgage Loans.

      Custodial Subsidy Account: An account maintained by the Servicer
specifically to hold all Subsidy Funds to be applied to individual Mortgage
Loans.

      Custodial Taxes and Insurance (T&I) Account: An account maintained by
the Servicer, specifically for the payment of real estate tax assessments and
insurance premiums in respect of Mortgaged Property related to Mortgage Loans.

      Custodian: The Corporate Trust Services division of  Wells Fargo Bank
or its successor in interest under the Custodial Agreement.

      Cut-Off Date: As specified in Article XI of the Pooling and Servicing
Agreement.

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

      Deficient Valuation: With respect to any Mortgage Loan the related
Mortgaged Property of which is involved in a bankruptcy proceeding, the
reduction by the bankruptcy court of the Unpaid Principal Balance of the
Mortgage Note.

      Delinquency/Delinquent: A Delinquency with respect to a Mortgage Loan
occurs, or a Mortgage Loan is Delinquent when all or part of a Borrower's
Monthly Payment or, where applicable, an Escrow Item is paid after the
applicable Due Date. For reporting purposes, a Delinquency that remains
uncured for 30 days or more, but less than 60 days, is considered a 30-day
Delinquency. A Delinquency that has been uncured for more than 60 days, but
less than 90 days, is considered a 60-day Delinquency. A Delinquency that has
been uncured for 90 days or more is considered a 90-day Delinquency. The
foregoing shall be determined based on an assumption of a year comprised of
twelve 30-day months.

      Depositor: Wells Fargo Asset Securities Corporation.

      Determination Date: The 17th day of the month in which the related
Remittance Date occurs, or if such 17th day is not a Business Day, the
Business Day preceding such 17th day.

      Directly Operate: With respect to any REO, the direct or indirect
furnishing or rendering of services to the tenants thereof, management or
operation of such REO, the holding of such REO primarily for sale to
customers, performance of any construction work thereon or any use of such
REO in a trade or business, in each case other than with the approval of the
Master Servicer; provided, however, that the Servicer shall not be considered
to Directly Operate an REO solely because it 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.

      Distribution Date: As defined in the Pooling and Servicing Agreement.

      Document Transfer Date: As defined in the Pooling and Servicing
Agreement.

      Document Transfer Event: As defined in the Pooling and Servicing
Agreement.

      Due Date: With respect to a Mortgage Loan, the day of each month on
which a Monthly Payment and, where applicable, any Escrow Funds payment is
due as stated in the related Mortgage Note. The Due Date for all Mortgage
Loans shall be the first day of each month.

      Due-On-Sale Clause: The clause in a Security Instrument requiring the
payment of the Unpaid Principal Balance of the related Mortgage Loan upon the
sale of, or the transfer of an interest in, the related Mortgaged Property.

      Eligible Account: As defined in the Pooling and Servicing Agreement.

      Eligible Custodial P&I Account: As defined in Section 6.1.2.

      Eligible Investments: As defined in the Pooling and Servicing Agreement.

      Errors and Omissions Policy: An insurance policy naming the Trustee,
its successors and assigns as loss payees relative to losses caused by errors
or omissions of the Servicer and its personnel, including, but not limited to
losses caused by the failure to pay insurance premiums or taxes, to record or
perfect liens, to effect valid transfers of Mortgage Notes, or to properly
service Mortgage Loans.

      Escrow Funds: All funds collected with respect to a Mortgage Loan by
the Servicer to cover related Escrow Items according to the provisions of
this Agreement.

      Escrow Item: An expense required to be paid by a Borrower under the
related Security Instrument including, without limitation, taxes, special
assessments, ground rents, water, sewer and other governmental impositions or
charges that are or may become liens on the related Mortgaged Property prior
to that of the related Security Instrument, as well as Hazard Insurance,
Flood Insurance and Primary Mortgage Insurance premiums.

      Exchange Act: The Securities Exchange Act of 1934, as amended.

      FDIC: Federal Deposit Insurance Corporation and its successors.

      FHA: The Federal Housing Administration and its successors.

      FHLMC: Federal Home Loan Mortgage Corporation and its successors.

      Fidelity Bond: An insurance policy naming the Trustee, its successors
and assigns as loss payees relative to losses caused by improper or unlawful
acts of the Servicer's personnel.

      Final Scheduled Maturity Date: As defined in the Pooling and Servicing
Agreement.

      Final Title Condition Report. A title condition report issued by
American Land Title Company, Inc., a wholly-owned subsidiary of the Servicer,
evidencing that according to the records of the county in which the Mortgaged
Property is located, the Security Instrument is a valid first lien on the
related Mortgaged Property subject only to permitted encumbrances.

      Flood Insurance: An insurance policy insuring against flood damage to a
Mortgaged Property, where required.

      FNMA: Federal National Mortgage Association and its successors.

      Form 8-K: As defined in the Pooling and Servicing Agreement.

      Form 8-K Disclosure Information: As defined in the Pooling and
Servicing Agreement.

      Form 10-D: As defined in the Pooling and Servicing Agreement.

      Form 10-K: As defined in the Pooling and Servicing Agreement.

      Full Unscheduled Principal Receipt: Any Unscheduled Principal Receipt
with respect to a Mortgage Loan (i) in the amount of the outstanding
principal balance of such Mortgage Loan and resulting in the full
satisfaction of such Mortgage Loan or (ii) representing Liquidation Proceeds
other than Partial Liquidation Proceeds.

      GNMA: Government National Mortgage Association and its successors.

      GPM (or GPARM) Loan: A fixed rate Mortgage Loan or ARM Loan, if any,
that provides during a portion of its term that the interest portion of the
Monthly Payment on such Mortgage Loan shall be less than the full amount of
interest due on such Mortgage Loan based on the related Mortgage Interest
Rate.

      Gross Margin: With respect to each ARM Loan, the fixed percentage
specified in the related Mortgage Note that is added to the applicable Index
on each Interest Adjustment Date to determine the new Mortgage Interest Rate
for such ARM Loan.

      Group: If applicable, as defined in the Pooling and Servicing Agreement.

      Hazard Insurance: A fire and casualty extended coverage insurance
policy insuring against loss or damage from fire and other perils covered
within the scope of standard extended hazard coverage naming the Servicer,
its successors and assigns, as a mortgagee under a standard mortgagee clause,
together with all riders and endorsements thereto.

      HUD: The United States Department of Housing and Urban Development and
its successors.

      Index: With respect to each ARM Loan, the applicable index specified in
the related Mortgage Note that is added to the related Gross Margin on each
Interest Adjustment Date to determine the new Mortgage Interest Rate for such
ARM Loan.

      Insurance Policy: Any insurance policy for a Mortgage Loan required
hereunder, including, without limitation, Primary Mortgage Insurance, Hazard
Insurance, Flood Insurance, Pool Insurance and Title Insurance policies.

      Insurance Proceeds: Proceeds from an Insurance Policy, other than such
proceeds which are applied by the Borrower or held to be applied by the
Borrower to the restoration of the related Mortgaged Property.

      Interest Adjustment Date: With respect to each ARM Loan, the date on
which the related Mortgage Interest Rate changes in accordance with the terms
of such Mortgage Note, the first of which is set forth in such Mortgage Note
and on the respective Servicer Mortgage Loan Schedule.

      Letter of Credit: With respect to a Pledged Asset Mortgage Loan, a
letter of credit issued by the Pledge Holder which may be drawn on by the
Servicer in the event that the related Pledged Asset Mortgage Loan continues
in default for 90 days.

      Liquidation: Application of full payment to a Mortgage Loan which
results in the release of the lien of the related Security Instrument on any
related Mortgaged Property, whether through foreclosure and sale of the
related REO, condemnation, prepayment in full or otherwise, or the
realization of all sums from the final disposition of the related REO,
provided that when a PMI Advance is made with respect to a Mortgage Loan, for
purposes of Sections 7.6, 7.7, 18.1 and 18.3, the Liquidation of a Mortgage
Loan will be deemed to have occurred upon the application of all payments to
the Mortgage Loan other than the Primary Mortgage Insurance proceeds covered
by such PMI Advance.

      Liquidation Proceeds: The amount received or advanced by the Servicer
which ultimately relates to the Liquidation of a Mortgage Loan, including any
PMI Advances and amounts received by drawing on a Letter of Credit in
connection with the Liquidation of a Mortgage Loan.

      Liquidation Profits: As defined in the Pooling and Servicing Agreement.

      Loan Group: If applicable, as defined in the Pooling and Servicing
Agreement.

      Loan Originator: The entity that closes a Mortgage Loan in its own name.

      Loan-to-Value (LTV): The ratio that results when the Unpaid Principal
Balance of a Mortgage Loan is divided by the Value of the related Mortgaged
Property.

      Lost Note Affidavit: An affidavit executed by an Officer of the
Servicer identifying the applicable Mortgage Note, stating that such Mortgage
Note has not been located after a thorough and diligent search and agreeing
to indemnify the purchaser of the Mortgage Loan against any loss from the
unavailability of the original Mortgage Note. Attached to such affidavit
shall be a true and correct copy of the original Mortgage Note.

      Master Servicer: Wells Fargo Bank or any successors or assigns.
Initially, the maser servicing function will be performed by the Corporate
Trust Services division of Wells Fargo Bank.

      Master Servicer Loan Number: A unique number assigned by the Master
Servicer to each Mortgage Loan set forth in the Servicer Mortgage Loan
Schedule.

      Maximum Lifetime Mortgage Interest Rate: With respect to each ARM (or
GPARM) Loan, the interest rate set forth in the related Mortgage Note as the
maximum Mortgage Interest Rate thereunder.

      Maximum Negative Amortization Amount: With respect to any Mortgage Loan
that provides for negative amortization, the maximum principal balance which
is permitted under the terms of the related Mortgage Note.

      MERS: Mortgage Electronic Registration Systems, Inc. or its designee.

      Mid-Month Receipt Period: With respect to each Remittance Date, the one
month period beginning on the Determination Date occurring in the calendar
month preceding the month in which such Remittance Date occurs and ending on
the day preceding the Determination Date immediately preceding such
Remittance Date.

      Minimum Lifetime Mortgage Interest Rate: With respect to each ARM Loan,
the interest rate set forth in the related Mortgage Note as the minimum
Mortgage Interest Rate thereunder, if any.

      Month End Interest: In the event that any Prepayments in Full of any
Mortgage Loans are received by the Servicer after the Applicable Unscheduled
Principal Receipt Period in the month in which such prepayments occurred, the
lesser of (i) the aggregate of the difference for each such Mortgage Loan
between the interest payment that would have been paid on such Mortgage Loan
that was prepaid through the last day of the month in which such prepayment
occurred and the interest payment actually received by the Servicer on such
Mortgage Loan that was prepaid and (ii) the product of 1/12th of 0.20% and
the aggregate of the Scheduled Principal Balance of all the Mortgage Loans
serviced hereunder.

      Month End Interest Shortfall: The excess of the amount described in
clause (i) of the definition of Month End Interest over the amount described
in clause (ii) of the definition thereof.

      Monthly Accounting Reports: The reports due from the Servicer on a
monthly basis (in the case of Type 2 Mortgage Loans, due no later than the
tenth calendar day of the month, or the preceding Business Day if the tenth
day is not a Business Day and, in the case of Type 1 Mortgage Loans, due no
later than the 18th calendar day of the month, or the preceding Business Day
if the 18th day is not a Business Day) relative to all Mortgage Loans
serviced by the Servicer, which reports are required to be submitted to the
Master Servicer.

      Monthly Payment: With respect to any Mortgage Loan, the scheduled
monthly payment of principal and interest due in the applicable month under
the terms of the related Mortgage Note.

      Monthly Remittance: The Servicer's aggregate payment due each month to
the Certificate Account as specified in Section 18.3.1.

      Mortgage Interest Rate: The interest rate payable by the Borrower on a
Mortgage Loan according to the terms of the Mortgage Note which, in the case
of ARM Loans, may be adjusted periodically as provided in such Mortgage Note.

      Mortgage Loan: A mortgage loan identified on the Servicer Mortgage Loan
Schedule. "Mortgage Loan" includes all of the Trustee's right, title and
interest in and to such Mortgage Loan, including, without limitation, the
related Mortgage Loan Documents and all other material and information
collected by the Servicer in connection with the Mortgage Loan including
Monthly Payments, Liquidation Proceeds, Insurance Proceeds and all other
rights, benefits and proceeds arising from or in connection with such
Mortgage Loan.

      Mortgage Loan Documents. With respect to a Mortgage Loan, the documents
to be delivered to the Custodian pursuant to Section 2.01 of the Pooling and
Servicing Agreement, and all other documents described in Article 9 hereof.

      Mortgage Loan Purchase Agreement: As defined in the Pooling and
Servicing Agreement.

      Mortgage Note: A manually executed written instrument evidencing the
related Borrower's promise to repay a stated sum of money, plus interest, to
the related Loan Originator by a specific date according to a schedule of
monthly principal and interest payments.

      Mortgage Note Assumption Rider: A rider attached to a Mortgage Note
which states the terms upon which an Assumption may occur, including, but not
limited to, consent in writing by the insurer under any Primary Mortgage
Insurance Policy with respect to the related Mortgage Loan.

      Mortgage Pass-Through Certificates: The specific series of Wells Fargo
Asset Securities Corporation, mortgage pass-through certificates specified on
page 1 of this Agreement.

      Mortgaged Property: Land, improvements thereon and other property
subject to the lien of a Security Instrument, which may include Co-op Shares
or residential long-term leases, securing repayment of the debt evidenced by
the related Mortgage Note.

      Mortgagee: The secured party to which a Security Instrument initially
grants a lien on the related Mortgaged Property.

      Net Mortgage Interest Rate: With respect to a Mortgage Loan, the
difference between (a) the Mortgage Interest Rate on such Mortgage Loan and
(b) the Servicing Fee Percentage.

      Non-Assigned Letter of Credit: A Letter of Credit where the named
beneficiary is Wells Fargo Bank.

      Non-Recoverable Advance: Any amount previously advanced by the Servicer
with respect to a Mortgage Loan which the Servicer has determined, pursuant
to the terms of this Agreement, not to be recoverable from Insurance
Proceeds, Liquidation Proceeds or other payments with respect to such
Mortgage Loan.

      Notice of Periodic Adjustment: With respect to each ARM Loan, a notice
provided to the Borrower of any changes or adjustments to the related
Mortgage Interest Rate or the related Monthly Payment.

      Officer: An officer of a corporation or a principal of a partnership,
who is authorized to execute documents on behalf of his corporation or
partnership, respectively.

      Officer's Certificate: A certificate signed by the Chairman of the
Board or a Vice President or an Assistant Vice President and certified by the
Treasurer or the Secretary or one of the Assistant Treasurers or Assistant
Secretaries of the Servicer, and delivered to the Master Servicer as required
by this Agreement.

      Opinion of Counsel: A written opinion of counsel, reasonably acceptable
in form and substance to the Master Servicer, and who may be in-house or
outside counsel to the Servicer but which must be Independent outside counsel
with respect to any such opinion of counsel concerning the taxation, or
status for tax purposes, of the Trustee.

      Owner Mortgage Loan File: With respect to each Mortgage Loan, a file
maintained by the Custodian for such Mortgage Loan, which file contains the
documents specified in Section 2.01(a) of the Pooling and Servicing
Agreement, as well as any other documents required to be added to the Owner
Mortgage Loan File pursuant to the Pooling and Servicing Agreement.

      P&I Advance: An advance by the Servicer of any principal and interest
payments not timely paid by the related Borrower (other than with respect to
a Balloon Loan, any amounts of principal payments in respect of Balloon
Amounts) to ensure that there are sufficient funds to cover the Monthly
Remittance on each Remittance Date.

      Partial Liquidation Proceeds: As to any Remittance Date, Liquidation
Proceeds received by the Servicer on a Mortgage Loan during the related
Partial Liquidation Receipt Period other than those Liquidation Proceeds
received during such Partial Liquidation Receipt Period which result from the
complete and final Liquidation of such Mortgage Loan.

      Partial Liquidation Receipt Period: As to any Remittance Date, the
period from and including the Determination Date occurring in the month
preceding the month of such Remittance Date (or, in the case of the first
Remittance Date, from and including the Cut-off Date) to but not including
the Determination Date occurring in the month of such Remittance Date.

      Partial Unscheduled Principal Receipt: An Unscheduled Principal Receipt
which is not a Full Unscheduled Principal Receipt.

      Payment Adjustment Date: With respect to each ARM Loan, the date on
which the Borrower's Monthly Payment changes in accordance with the terms of
the related Mortgage Note.

      Periodic Payment Cap: With respect to an ARM Loan, the limit on the
percentage increase that may be made on the related Monthly Payment on any
Payment Adjustment Date, as set forth in the related Mortgage Note.

      Periodic Rate Cap: With respect to an ARM Loan, the limit, expressed as
incremental percentage points, on the increase or decrease that may be made
to the related Mortgage Interest Rate on any Interest Adjustment Date from
such Mortgage Interest Rate immediately prior to such Interest Adjustment
Date, as set forth in the related Mortgage Note.

      Person: Any individual, corporation, partnership, joint venture,
association, joint-stock company, trust or unincorporated organization.

      PITI Funds: Funds contributed by a builder on behalf of a Borrower in
order to reduce the payments required from the Borrower for a specified
period in specified amounts.

      PITI Loan: A Mortgage Loan, if any, as to which a builder makes
payments of principal, interest, taxes and/or insurance on behalf of the
Borrower for a specified period of time.

      Pledge Holder: The entity which issued a Letter of Credit.

      Pledged Asset Mortgage Loan : A Mortgage Loan as to which, at the time
of origination, a Letter of Credit was issued in favor of the initial holder
of such Mortgage Loan.

      PMI Advance: As defined in Section 17.7.1.

      Pool Insurance: An insurance policy insuring against certain credit
risk losses on certain Mortgage Loans up to a certain amount.

      Pool Insurer: With respect to any Mortgage Loan, the insurer under the
Pool Insurance policy relating to such Mortgage Loan.

      Pooling and Servicing Agreement: The pooling and servicing agreement
among Wells Fargo Asset Securities Corporation, as depositor, Wells Fargo
Bank, N.A., as master servicer, the Trustee, and, if applicable, the Trust
Administrator, relating to the issuance of the Mortgage Pass-Through
Certificates.

      Preliminary Title Report: A report issued by a title insurance company
in anticipation of issuing a Title Insurance policy which evidences existing
liens and gives a preliminary opinion as to the absence of any encumbrance on
title to a Mortgaged Property, except liens to be removed on or before
purchase or refinance, as the case may be, by the Borrower and Permitted
Encumbrances.

      Prepayment In Full: With respect to any Mortgage Loan, any payment by
the Borrower in the amount of the outstanding principal balance of such
Mortgage Loan which is received in advance of its Due Date and is not
accompanied by an amount representing scheduled interest for any period
subsequent to the date of prepayment.

      Primary Mortgage Insurance: Insurance obtained from a Primary Mortgage
Insurer which insures the holder of a Mortgage Note against loss in the event
the related Borrower defaults under such Mortgage Note or the related
Security Instrument, including all riders and endorsements thereto.

      Primary Mortgage Insurer: With respect to any Mortgage Loan, the
insurer under the Primary Mortgage Insurance policy relating to such Mortgage
Loan.

      Prior Month Receipt Period: With respect to each Remittance Date, the
calendar month preceding the month in which such Remittance Date occurs.

      Property Inspection Report: A report, submitted by the Servicer to the
Master Servicer, describing the related Mortgaged Property.

      Prospectus: As defined in the Pooling and Servicing Agreement.

      Prudent Servicing Practices: Such practices observed generally by
servicers in discharging their servicing obligations in a prudent manner in
accordance with industry standards for mortgage loans similar to the Mortgage
Loans.

      PUD (Planned Unit Development): A parcel of real estate that contains
property and improvements owned and maintained by a homeowners' association,
corporation or trust for the enjoyment and use of individual PUD Unit owners
within that parcel of land. The shared portions of the parcel are known as
common property.

      PUD Unit: A single family residential property within a PUD.

      Purchase Price: With respect to any Mortgage Loan required to be
purchased by the Servicer pursuant to Section 5.1.3 or Section 8.3.2 hereof,
an amount equal to (a) the Unpaid Principal Balance of the Mortgage Loan,
plus (b) accrued interest thereon at the Mortgage Interest Rate through the
last day of the month in which the purchase occurs, and, if the Servicer is
the entity paying the Purchase Price, minus (c) any unreimbursed advances of
principal and interest made by the Servicer on such Mortgage Loan and any
outstanding Servicing Fee owed with respect to such Mortgage Loan. Further,
in connection with any such purchase of a Mortgage Loan as a result of a
breach of a representation or warranty under this Agreement, the Servicer
shall provide the Trustee with an indemnity, in form and substance
satisfactory to the Master Servicer, against additional costs, expenses and
taxes arising out of the repurchase. With respect to any Mortgage Loan
purchased or repurchased from the Trustee pursuant to an agreement other than
this Agreement, the purchase price specified in such other agreement.

      Rating Agency: As defined in the Pooling and Servicing Agreement.

      Real Estate Owned (REO): Any Mortgaged Property the title to which is
acquired on behalf of the Trustee through foreclosure, deed-in-lieu of
foreclosure, abandonment or reclamation from bankruptcy in connection with a
defaulted Mortgage Loan.

      Realized Loss: As to any defaulted Mortgage Loan, any loss realized by
the Trustee of such Mortgage Loan as calculated pursuant to Section 7.7
hereof.

      Recovery : As defined in the Pooling and Servicing Agreement.

      Reference Bank: Wells Fargo Bank, N.A. or if such entity is no longer
lending money or no longer quoting a prime rate, such other entity as the
Master Servicer may specify by written notice to the Servicer.

      Regulation AB: Subpart 229.1100 - Asset Backed Securities (Regulation AB),
17 C.F.R. ss.ss.229.1100-229.1123, as such may be amended from time to time, and
subject to such clarification and interpretation as have been publicly provided
by the Commission in the adopting release (Asset-Backed Securities, Securities
Act Release No. 33-8518, 70 Fed. Reg. 1,506 (Jan. 7, 2005)) or by the staff of
the Commission, or as may be provided by the Commission or its staff from time
to time.

      Relevant Servicing Criteria: The Servicing Criteria applicable to the
Servicer, as set forth on Exhibit R to the Pooling and Servicing Agreement.
For clarification purposes, multiple parties can have responsibility for the
same Relevant Servicing Criteria. With respect to a Subcontractor or
Subservicer engaged by the Servicer, the term "Relevant Servicing Criteria"
refers to the portion of the Relevant Servicing Criteria applicable to the
Servicer insofar as the functions required to be performed by the Servicer
are to be performed by the Subcontractor or Subservicer, as applicable.

      REMIC: The segregated pool or pools of assets designated as one or more
real estate mortgage investment conduits, within the meaning of the REMIC
Provisions, pursuant to the Pooling and Servicing Agreement.

      REMIC Provisions: The provisions of the federal income tax law relating
to real estate mortgage investment conduits, which appear at Sections 860A
through 860G of the Code, and related provisions, and regulations and rulings
promulgated thereunder, as the foregoing may be in effect from time to time
and including any proposed legislation or regulations which, as proposed,
would have an effective date prior to enactment thereof.

      Remittance Date: The 24th day of each month (or the preceding Business
Day if the 24th day is not a Business Day). Each month, the Servicer must
transfer all required funds from the Custodial P&I Account to the Certificate
Account on or before the Remittance Date.

      Rents from Real Property: With respect to any REO, gross income of the
character described in Section 856(d) of the Code (generally, rent for the
use of real property, the amount of which is not dependent, in whole or in
part, upon the income or profit of any person, including certain payments for
certain services and personal property incidental to and customarily provided
in connection with the rental of such real property.)

      REO Disposition: The receipt by the Servicer of Liquidation Proceeds
and other payments and recoveries (including proceeds of a final sale) from
the sale or other disposition of the REO.

      REO Disposition Period: The period of time in which the Servicer shall
dispose or cooperate with the Trustee in disposing of an REO as set forth in
Section 14.4.2.

      Reportable Event: As defined in the Pooling and Servicing Agreement.

      Representing Party: A Person that has transferred Mortgage Loans,
directly or through one or more intermediaries, to the Trustee pursuant to an
agreement for the sale of Mortgage Loans pursuant to which a Representing
Party has made representations and warranties with respect to certain
Mortgage Loans, and under which the Trustee, its successors and assigns has
recourse against such Representing Party for any breach thereunder with
respect to such Mortgage Loans.

      Retained Mortgage Loan File: A file for each Mortgage Loan maintained
by the Servicer prior to any Document Transfer Date and by the Custodian
after any Document Transfer Date that contains the documents specified in
Section 2.01(b) of the Pooling and Servicing Agreement and any additional
documents required to be added to the Retained Mortgage Loan File pursuant to
the Pooling and Servicing Agreement.

      SAIF: The Savings Association Insurance Fund.

      Sarbanes-Oxley Certification: As defined in the Pooling and Servicing
Agreement.

      Scheduled Principal Balance: With respect to each Mortgage Loan (or
related REO), the principal balance of such Mortgage Loan as of the
applicable Due Date calculated by taking into account the application of any
Monthly Payments due on or before such Due Date (whether or not such Monthly
Payments were received from the Borrower), and Curtailments, Insurance
Proceeds or Liquidation Proceeds, and Realized Losses received or realized by
the Servicer prior to such Due Date.

      Securities Act: The Securities Act of 1933, as amended.

      Security Instrument: A written instrument creating a valid first lien
on a Mortgaged Property. A Security Instrument may be in the form of a
mortgage, deed of trust, deed to secure debt or security deed, including any
riders and addenda thereto.

      Servicer: Wells Fargo Bank, the entity that has entered into this
Agreement with the Master Servicer and any successors or assigns of Wells
Fargo Bank. Initially the servicing functions will be performed by the Wells
Fargo Home Mortgage division of Wells Fargo Bank.

      Servicer Loan Mortgage Number: A unique number assigned by the Servicer
to a Mortgage Loan.

      Servicer Modification: A permanent modification to the terms of a
Mortgage Loan, in accordance with the terms of Section 12.3.6, as to which
the Mortgagor is in default or as to which, in the judgment of the Servicer,
default is reasonably foreseeable.

      Servicer Mortgage Loan File: A file maintained by the Servicer for each
Mortgage Loan that contains the documents specified in Section 9.2 hereof, as
well as any other documents that come into the Servicer's possession with
respect to a Mortgage Loan.

      Servicer Mortgage Loan Schedule: The Mortgage Loans on the Mortgage
Loan Schedule (as defined in the Pooling and Servicing Agreement) that are
serviced by the Servicer.

      Servicing Criteria: The "servicing criteria" set forth in Item 1122(d)
of Regulation AB, as such may be amended from time to time.

      Servicing Fee: For each Mortgage Loan, the compensation due the
Servicer in an amount equal to the product of (i) one-twelfth of the
Servicing Fee Percentage and (ii) the Scheduled Principal Balance of the
Mortgage Loan as of the immediately preceding Due Date (without taking into
account any payment of principal due on such Due Date).

      Servicing Fee Percentage: With respect to each Mortgage Loan, the
percentage specified on the Servicer Mortgage Loan Schedule.

      Single Family Property: A one-unit residential property.

      Subcontractor: Any vendor, subcontractor or other Person that is not
responsible for the overall servicing (as "servicing" is commonly understood
by participants in the mortgage-backed securities market) of the Mortgage
Loans but performs one or more discrete functions identified in Item 1122(d)
of Regulation AB with respect to the Mortgage Loans under the direction or
authority of the Servicer or a Subservicer.

      Subservicer: Any Person that services the Mortgage Loans on behalf of
the Servicer or any Subservicer and is responsible for the performance
(whether directly or through Subservicers or Subcontractors) of a substantial
portion of the material servicing functions required to be performed by the
Servicer under this Agreement that are identified in Item 1122(d) of
Regulation AB.

      Subsidy Funds: Funds contributed by the employer of a Borrower in order
to reduce the payments required from the Borrower for a specified period in
specified amounts.

      Subsidy Loan: A Mortgage Loan, if any, subject to a temporary interest
subsidy agreement pursuant to which the monthly interest payments made by the
related Borrower will be less than the scheduled monthly interest payments on
such Mortgage Loan, with the resulting difference in interest payments being
provided by the employer of the Borrower.

      Tangible Net Worth: As of the date of determination thereof, the par
value (or value stated on the Servicer's books) of the capital stock of all
classes of the Servicer, plus, or minus in the case of a deficiency, the
amount of paid in capital and retained earnings of the Servicer, all
determined in accordance with generally accepted accounting principles as are
then in effect. The Master Servicer may exclude assets that are unacceptable,
in the Master Servicer's reasonable discretion, from the determination of the
Servicer's Tangible Net Worth.

      T&I Advance: An advance by the Servicer of any taxes and insurance
premiums due with respect to any Mortgage Loan.

      Threshold Amount: With respect to any Custodial P&I Account, (i)
$100,000 or, in the case of any Eligible Custodial P&I Account, the aggregate
amount on deposit therein (i.e., an unlimited amount); or (ii) after any
notice has been given pursuant to Section 19.2.6, the amount specified in
such notice.

      Title Insurance: An American Land Title Association (ALTA) mortgage
loan title policy form 1970, or other form of Title Insurance Policy
acceptable to FNMA or FHLMC, including all riders and endorsements thereto,
insuring that the Security Instrument constitutes a valid first lien on the
related Mortgaged Property subject only to permitted encumbrances.

      Transfer of Ownership: Includes, but is not limited to, the conveyance
of a Mortgaged Property, whether legal or equitable, voluntary or
involuntary, by any of the following methods:

      (a) outright sale;
      (b) deed;
      (c) installment sale contract;
      (d) land contract;
      (e) contract for deed;
      (f) leasehold interest with the term greater than three years;
      (g) lease with option to purchase;
      (h) land trust; or
      (i) any other conveyance of an interest in real property,
          including those involving secondary financing.

      Trust: The trust created by the Pooling and Servicing Agreement.

      Trust Administrator: If applicable, the trust administrator specified
in the Pooling and Servicing Agreement, its successors and assigns.

      Trustee: The trustee specified in the Pooling and Servicing Agreement,
its successors and assigns.

      Type 1 Mortgage Loans: The Mortgage Loans identified on the Mortgage
Loan Schedule as Type 1 Mortgage Loans.

      Type 2 Mortgage Loans: The Mortgage Loans identified on the Mortgage
Loan Schedule as Type 2 Mortgage Loans.

      Unpaid Principal Balance: With respect to any Mortgage Loan, the
outstanding principal balance payable by the Borrower under the terms of the
Mortgage Note.

      Unscheduled Principal Receipt: Any Mortgagor payment or other recovery
of principal on a Mortgage Loan which is received in advance of its Due Date
and is not accompanied by an amount representing scheduled interest for any
period subsequent to the date of prepayment, including, without limitation,
prepayments of principal (whether full or partial), Liquidation Proceeds,
Partial Liquidation Proceeds, Insurance Proceeds, proceeds of REO
Dispositions, Recoveries and proceeds received from any condemnation award or
proceeds in lieu of condemnation other than that portion of such proceeds
released to the mortgagor in accordance with the terms of the Mortgage Loan
Documents or Prudent Servicing Practices and excluding any proceeds of a
repurchase of a Mortgage Loan by the Servicer or a Representing Party.

      Value: The lesser of the appraised value or sales price of the related
Mortgaged Property at the time the Mortgage Loan is closed. For a refinanced
Mortgage Loan, the Value of the related Mortgaged Property is its appraised
value at the time the refinanced Mortgage Loan is closed.

      Wells Fargo Bank: Wells Fargo Bank, N.A., or its successor in interest.

                                    ARTICLE 2

                                  Construction

   Section 2.1  Legal Construction

      2.1.1. Compliance with Applicable Law. The obligations of the Servicer
pursuant to this Agreement shall at all times be performed in compliance with
all applicable laws.

      2.1.2. Potential Conflict. If any obligation of the Servicer pursuant
to this Agreement shall give rise to a potential conflict with applicable
law, such obligation shall be construed so as to (a) comply with all
applicable laws and (b) effectuate with respect to such obligations, to the
fullest extent permitted by law, the intention of the parties hereto as
expressed in this Agreement.

      2.1.3. Consistent Legal Compliance. The fact that certain provisions of
this Agreement contain language which expressly requires compliance with all
applicable laws, shall not give rise to an implication that other provisions,
which do not expressly include such language, operate in derogation of the
requirement for such legal compliance.

      2.1.4. General Interpretive Rules. For purposes of this Agreement,
except as otherwise expressly provided or unless the context otherwise
requires, (i) the terms defined in this Agreement have the meanings assigned
to them in this Agreement and include the plural as well as the singular, and
the use of any gender herein shall be deemed to include the other gender;
(ii) reference herein to "Article", "Section", "Clause", and other
subdivisions, and to "Exhibits", without reference to a document, are to
designated Articles, Sections, Clauses and other subdivisions of, and to
Exhibits to, this Agreement; (iii) reference to a Clause without further
reference to a Section is a reference to such Clause as contained in the same
Section in which the reference appears, and this rule shall also apply to
other subdivisions; (iv) "including" means "including but not limited to";
and (v) the words "herein", "hereof", "hereunder" and other words of similar
import refer to this Agreement as a whole and not to any particular provision.

      2.1.5. Construction of Provisions. Although certain provisions of this
Agreement contain express language which precludes the Servicer's recovery
of, or reimbursement for, expenses incurred hereunder, no inference to the
contrary shall be drawn from absence of such, or similar, language in any
other provision hereof regarding expenses.

   Section 2.2  Servicer Practices

      2.2.1. Prudent Servicing Practices. Where not inconsistent with the
provisions of this Agreement, the Servicer shall at all times perform its
obligations hereunder in accordance with Prudent Servicing Practices, which
shall not be less exacting than the Servicer employs and exercises in
servicing and administering mortgage loans for its own account, or for the
account of FNMA or FHLMC, including exploring alternatives to foreclosure to
mitigate Realized Losses.

      2.2.2. Non-Discrimination Practices. The Servicer shall at all times
perform its obligations under this Agreement so as to (a) treat Borrowers on
the basis of their individual merits and (b) not discriminate against
Borrowers on the basis of their race, creed or national origin.

   Section 2.3  General Provisions

      2.3.1. Servicer's Agreement. The Servicer agrees with the Master
Servicer to service the Mortgage Loans in accordance with the provisions of
this Agreement and, to the extent of any instructions of the Master Servicer
that are given, such instructions and, subject to the provisions hereof and
without any further instruction by the Master Servicer except as shall be
expressly provided for herein, shall have full power and authority to do all
things necessary in connection therewith.

      2.3.2. Term of Agreement. Except as otherwise provided herein, the
duties, responsibilities and obligations to be performed and carried out by
the Servicer under this Agreement shall commence upon the execution of this
Agreement and shall continue until (a) each Mortgage Loan is (i) liquidated
or (ii) otherwise paid in full, (b) all payments related thereto are remitted
in accordance with this Agreement, and (c) all obligations hereunder related
thereto are discharged.

      2.3.3. Amended Mortgage Loan Schedule. From time to time as additional
Mortgage Loans are transferred to be serviced hereunder by the Servicer, the
Servicer Mortgage Loan Schedule shall be amended by the Master Servicer to
include the new Mortgage Loans. Due to defects in documentation and for other
reasons, certain Mortgage Loans referred to in the Servicer Mortgage Loan
Schedule may be deleted and other Mortgage Loans may be added. The Servicer
hereby agrees to any such addition and/or deletion of any Mortgage Loans and,
in the event any Mortgage Loans are added and/or deleted from the Servicer
Mortgage Loan Schedule, the Servicer authorizes the Master Servicer to amend
the Servicer Mortgage Loan Schedule. The Master Servicer shall provide the
Servicer with the corrected and updated Servicer Mortgage Loan Schedule.

      2.3.4. Assignment and Replacement. The Servicer acknowledges and agrees
that in the event that the Master Servicer resigns as Master Servicer under
this Agreement, any successor master servicer has the right to assume the
Master Servicer's rights and obligations and to enforce the Servicer's
obligations under this Agreement.

      2.3.5. Notices. All notices, requests, demands and other communications
required or permitted under this Agreement shall be in writing and shall be
deemed to have been duly given, made and received upon actual receipt of
registered or certified mail, postage prepaid, return receipt requested,
addressed as set forth below:

            (a)   if to the Master Servicer:

                  Wells Fargo Bank, N.A.
                  9062 Old Annapolis Road
                  Columbia, Maryland 21045
                  Attention: Director of Master Servicing

            (b)   if to the Servicer:

                  Wells Fargo Bank, N.A.
                  1 Home Campus
                  Des Moines, Iowa 50328-0001
                  Attention: John Brown, MAC X2302-033
                  Fax: 515-324-3118

                  with a copy to:

                  Wells Fargo Bank, N.A.
                  1 Home Campus
                  Des Moines, Iowa 50328-0001
                  Attention: General Counsel, MAC X2401-06T

            (c)   if to the Custodian:

                  Wells Fargo Bank, N.A.
                  1015 10th Avenue South East
                  Minneapolis, Minnesota 55414
                  Attention: WFMBS 2007-AR8

            (d)   if to the Trustee:

                  HSBC Bank USA, National Association
                  452 Fifth Avenue
                  New York, New York 10018
                  Attention: Corporate Trust

            (e)   if to the Depositor:

                  5325 Spectrum Drive
                  Frederick, Maryland 21703
                  Attention: Structured Finance

Any party may alter the address to which communications or copies are to be
sent by giving notice of such change of address in conformity with the
provisions of this paragraph for the giving of notice.

      2.3.6. Change of Accountants. During the term of this Agreement, the
Servicer shall not change, or make any substitution of, its certified public
accountants except upon written notice to the Master Servicer given 30 days
prior to such change or substitution.

                                    ARTICLE 3

                                REMIC Compliance

   Section 3.1  General

      3.1.1. Applicability. The provisions of this Article 3 apply to all the
Mortgage Loans or Mortgaged Property unless the Mortgage Loan has not been
transferred (or been identified for a future transfer) to an entity with
respect to which an election to be characterized as a REMIC has been (or is
expected to be) made.

      3.1.2. Modifications of Mortgage. With the prior written consent of the
Master Servicer, the Servicer may modify the terms of a Mortgage Loan which
is in default or a Mortgage Loan as to which default is reasonably
foreseeable; provided, however, that (i) such modification may not reduce the
amount of principal owed under the related Mortgage Note or permanently
reduce the Mortgage Interest Rate for such Mortgage Loan or extend the final
maturity date with respect to any Mortgage Loan beyond the Final Scheduled
Maturity Date for the Certificates, or if the Mortgage Loans are divided into
two or more Loan Groups, the Final Scheduled Maturity Date for the
Certificates in the related Group and (ii) the Servicer and the Master
Servicer have determined that such modification is likely to increase the
proceeds of such Mortgage Loan over the amount expected to be collected
pursuant to foreclosure. Notwithstanding anything to the contrary in this
Agreement, the Servicer shall not permit any modification of any material
term of a Mortgage Loan (including the Mortgage Interest Rate, the principal
balance, the amortization schedule, or any other term affecting the amount or
timing of payments on the Mortgage Loan) where such modification is not the
result of a default or as to which default is reasonably foreseeable under
the Mortgage Loan unless the Master Servicer has consented thereto and the
Servicer has received an Opinion of Counsel or a ruling from the Internal
Revenue Service (at the expense of the Servicer or the party making the
request of the Servicer to modify the Mortgage Loan) to the effect that such
modification would not be treated as giving rise to a new debt instrument for
federal income tax purposes or a disposition of the modified Mortgage Loan
and that such modification is permitted under the REMIC Provisions. The
Servicer shall be responsible for the determination that any extension of the
maturity date of a Mortgage Loan complies with this paragraph.

      3.1.3. Indemnification with Respect to Certain Taxes and Loss of REMIC
Status. In the event that the REMIC fails to qualify as a REMIC, loses its
status as a REMIC, or incurs state or local taxes, or tax as a result of a
prohibited transaction or contribution subject to taxation under the REMIC
Provisions due to the negligent performance by the Servicer of its duties and
obligations set forth herein, the Servicer shall indemnify the Trustee, the
Trust Administrator (if applicable), the Master Servicer and the holders of
the related Certificates against any and all losses, claims, damages,
liabilities or expenses ("REMIC Failure Losses") resulting from such
negligence; provided, however, that the Servicer shall not be liable for any
such REMIC Failure Losses attributable to the action or inaction of the
Master Servicer or the holders of such Certificates nor for any such REMIC
Failure Losses resulting from misinformation provided by the Master Servicer
on which the Servicer has relied. The foregoing shall not be deemed to limit
or restrict the rights and remedies of the other holders of the Certificates
now or hereafter existing at law or in equity.

   Section 3.2  REO Qualification

      3.2.1. Foreclosure Property. Notwithstanding any other provision of
this Agreement, the Servicer, shall not rent, lease, or otherwise earn income
on behalf of the REMIC with respect to any REO which might cause such REO to
fail to qualify as "foreclosure" property within the meaning of section
860G(a)(8) of the Code (e.g., rent based upon the earnings of the lessee) or
result in the receipt by the REMIC of any "income from non-permitted assets"
within the meaning of section 860F(a)(2) of the Code (e.g., income
attributable to any asset which is not a qualified mortgage, a cash flow or
reserve fund investment, or personal property not incidental to the REO) or
any "net income from foreclosure property" which is subject to tax under the
REMIC Provisions unless the Master Servicer has received an Opinion of
Counsel (at the Servicer's expense) to the effect that, under the REMIC
Provisions and (where appropriate, any relevant proposed legislation) any
income generated for the REMIC by the REO would not result in the imposition
of a tax upon the REMIC. In general, the purpose of this Section 3.2 and the
REMIC Provisions (which this section is intended to implement) is to ensure
that the income earned by the REMIC is passive type income such as interest
on mortgages and passive type rental income on real property.

      3.2.2. Foreclosure Property Qualification Restrictions. Without
limiting the generality of the foregoing, the Servicer shall not:

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

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

      (c) authorize or permit any construction on any REO, 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

      (d) Directly Operate or allow any other Person to Directly Operate, any
   REO on any date more than 90 days after its acquisition date, other than
   through an "independent contractor," within the meaning of Section 856(e)
   of the Code;

unless, in any such case, the Servicer has requested and received an Opinion
of Counsel (at the Servicer's expense) to the effect that such action will
not cause such REO 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 the
REMIC, in which case the Servicer may take such actions as are specified in
such Opinion of Counsel.

      3.2.3. REO Disposition. Within 30 days following an REO Disposition,
the Servicer shall provide to the Master Servicer a statement of accounting
for the related REO, including without limitation, (i) the loan number of the
related Mortgage Loan, (ii) the date such Mortgaged Property was acquired in
foreclosure or by deed in lieu of foreclosure, (iii) the date of REO
Disposition, (iv) the gross sales price and related selling and other
expenses, (v) accrued interest calculated from the date of acquisition to the
disposition date and (vi) such other information as the related trustee may
reasonably request.

   Section 3.3  Prohibited Transactions and Activities

      3.3.1. Mortgage Loan Disposition Restriction. The Servicer shall not
permit the sale, disposition or substitution for any of the Mortgage Loans
(except in a disposition pursuant to (i) the foreclosure or default of a
Mortgage Loan, (ii) the bankruptcy or insolvency of the REMIC, (iii) the
termination of the REMIC in a "qualified liquidation" or "clean-up" call as
defined in Section 860F of the Code or (iv) a substitution of a Qualifying
Substitution Mortgage Loan as permitted under the REMIC Provisions), nor
acquire any assets for the REMIC, after the startup day of the REMIC, nor
sell or dispose of any investments in any of the accounts established by the
Servicer for the REMIC for gain, nor accept any contributions to the REMIC
(other than certain cash contributions permitted by Section 860G(c) of the
Code) unless it has received an Opinion of Counsel (at the expense of the
Person requesting the Servicer to take such action) to the effect that such
disposition, acquisition, substitution, or acceptance will not (a) affect
adversely the status of the REMIC as a REMIC or of the Certificates, other
than the Certificates representing the residual interest in the REMIC, as the
regular interests therein within the meaning of the REMIC Provisions, (b)
affect the distribution of interest or principal on the Certificates, (c)
result in the encumbrance of the assets transferred or assigned to the REMIC
(except pursuant to the provisions of this Agreement) or (d) cause the REMIC
to be subject to a tax on "prohibited transactions" or "prohibited
contributions" pursuant to the REMIC Provisions.

      3.3.2. Personal Property. The Servicer shall not acquire any personal
property relating to any Mortgage Loan unless either:

      (a) such personal property is incident to real property (within the
   meaning of Section 856(e)(1) of the Code) so acquired by the Servicer; or

      (b) the Servicer shall have requested and received an Opinion of
   Counsel, at the expense of the Servicer, to the effect that the holding of
   such personal property by the REMIC will not cause the imposition of a tax
   on the REMIC under the REMIC Provisions or cause the REMIC to fail to
   qualify as a REMIC at any time that any Certificate is outstanding.

   Section 3.4  Eligible Investments

      3.4.1. Custodial Account. Funds in any custodial accounts established
by the Servicer and maintained in respect of the REMIC may be invested and,
if invested, shall be invested in Eligible Investments selected by the
Servicer which shall mature not later than the Business Day immediately
preceding the next Remittance Date, and any such Eligible Investment shall
not be sold or disposed of prior to its maturity. All such Eligible
Investments shall be made in the name of the REMIC or its nominee. All income
and gain realized from any such investment shall be, as long as the Servicer
is servicing the Mortgage Loans held by the REMIC, for the benefit of the
Servicer as additional compensation and shall be subject to its withdrawal or
order from time to time. The amount of any losses incurred in respect of any
such investments shall be deposited in the relevant account by the Servicer
out of its own funds immediately as realized. The foregoing requirements for
deposit in such account are exclusive, it being understood and agreed that,
without limiting the generality of the foregoing, payments of interest on
funds in such account and, as long as the Servicer is servicing the Mortgage
Loans held by the REMIC, payments in the nature of prepayment fees, late
payment charges, assumption fees or any similar fees customarily associated
with the servicing mortgage loans paid by any mortgagor need not be deposited
by the Servicer in such account and may be retained by the Servicer as
additional servicing compensation. If the Servicer deposits in such account
any amount not required to be deposited therein, it may at any time withdraw
such amount, any provision herein to the contrary notwithstanding.

      3.4.2. Escrow Account. Subject to the terms of the related Mortgage
Notes and Security Instrument, and further subject to applicable law, any
funds in any escrow account shall be invested in Eligible Investments that
mature prior to the date on which payments have to be made out of the related
escrow account and any such Eligible Investment shall not be sold or disposed
of prior to its maturity; provided that, if any loss is incurred on any such
investment, the Servicer shall cover such loss by making a deposit into the
appropriate escrow account out of its own funds in the amount of such loss.
Withdrawals from any escrow account may be made (to the extent amounts have
been escrowed for such purpose and to the extent permitted by the related
Security Instrument and Mortgage Note) only (i) to effect timely payment of
Escrow Items in connection with the related Mortgage Loan, (ii) to reimburse
the Master Servicer or Servicer out of related collections for advances with
respect to Escrow Items, (iii) to refund to any mortgagors any sums
determined to be overages, (iv) to pay interest, if any, owed to mortgagors
on such account to the extent required by law, (v) for application to
restoration or repair of the Mortgaged Property, (vi) to clear and terminate
the escrow account on the termination of this Agreement or (vii) to remove
funds placed in such escrow account in error. The Servicer shall be entitled
to all investment income on any escrow account not required to be paid to
mortgagors pursuant to the preceding sentence.

                                    ARTICLE 4

                             Servicer Considerations

   Section 4.1  Servicer Eligibility Standards

      To service Mortgage Loans under this Agreement the Servicer must
satisfy the eligibility standards set forth in this Section 4.1 initially and
at all times thereafter.

      4.1.1. Regulatory Approvals and Licensing. The Servicer must be:

      (a) FNMA or FHLMC approved and in good standing;

      (b) a HUD approved mortgagee in good standing;

      (c) in compliance with all applicable capital requirements and other
   requirements from time to time specified by any governmental agency or
   quasi-governmental authority having jurisdiction over the Servicer; and

      (d) properly licensed to service the Mortgage Loans in all relevant
   jurisdictions where such licenses are required.

      4.1.2. Net Worth and Portfolio Requirements.

      (a) The Servicer must maintain a Tangible Net Worth of at least
   $1,000,000.

      (b) The Servicer must maintain an Adjusted Tangible Net Worth of at
   least $1,000,000.

      (c) The Servicer must maintain a servicing portfolio of at least
   $1,000,000,000.

      4.1.3. Auditor's Opinion; Other Annual Reports and Exchange Act
Reporting. (a)  For so long as the Mortgage Loans are master serviced by the
Master Servicer, the Servicer shall provide, or cause to be provided in the
case of clause (iii), to the Master Servicer, no later than March 5 of each
year or if such day is not a Business Day, the next Business Day (with a 10
calendar day cure period, but in no event later than March 15), commencing in
March 2008, the following:

      (i) a report (in form and substance reasonably satisfactory to the Master
   Servicer and the Depositor) regarding the Servicer's assessment of compliance
   with the Servicing Criteria applicable to it during the immediately preceding
   calendar year, as required under Rules 13a-18 and 15d-18 of the Exchange Act
   and Item 1122 of Regulation AB. Such report shall be addressed to the Master
   Servicer and the Depositor and signed by an authorized officer of the
   Servicer, and shall address, at a minimum, each of the Servicing Criteria
   applicable to the Servicer, as specified in the table in Exhibit R to the
   Pooling and Servicing Agreement;

      (ii) a report of a registered public accounting firm reasonably acceptable
   to the Master Servicer and the Depositor that attests to, and reports on, the
   assessment of compliance made by the Servicer and delivered pursuant to the
   preceding paragraph. Such attestation shall be in accordance with Rules
   1-02(a)(3) and 2-02(g) of Regulation S-X under the Securities Act and the
   Exchange Act. If requested by the Master Servicer or the Depositor, such
   report shall contain or be accompanied by a consent of such accounting firm
   to inclusion or incorporation of such report in the Depositor's Registration
   Statement on Form S-3 relating to the Certificates and the Trust's Form 10-K;
   and

      (iii) an assessment of compliance and accountants' attestation described
   in paragraphs (i) and (ii) of this Section 4.1.3(a) with respect to each
   Subservicer, and each Subcontractor determined by the Servicer pursuant to
   Section 4.1.4(b) to be "participating in the servicing function" within the
   meaning of Item 1122 of Regulation AB.

      (b) Each assessment of compliance provided by a Subservicer pursuant to
Section 4.1.3(a)(iii) shall address each of the Relevant Servicing Criteria. An
assessment of compliance provided by a Subcontractor pursuant to Section
4.1.3(a)(iii) need not address any elements of the Servicing Criteria applicable
to it other than those specified by the Servicer pursuant to Section 4.1.4(b).

      (c) On or before March 5 of each calendar year or if such day is not a
Business Day, the next Business Day (with a 10 calendar day cure period, but in
no event later than March 15), commencing in March 2008, the Servicer shall
deliver to the Master Servicer a certificate signed by an authorized officer of
the Servicer, for the benefit of the Master Servicer and its officers, directors
and affiliates in the event that the Master Servicer is required under the
Pooling and Servicing Agreement to file a Sarbanes-Oxley Certification directly
with the Commission in connection with the securitization of the Mortgage Loans
(the "Transaction"), a certification in the form attached hereto as Exhibit B.

      The foregoing certification shall also be given upon thirty (30) days
written request by the Master Servicer in connection with any additional
Sarbanes-Oxley Certifications directly filed by the Master Servicer involving
the Mortgage Loans. The Servicer acknowledges that the Master Servicer may rely
on the certification provided by the Servicer pursuant to this Section 4.1.3(c)
in signing a Sarbanes-Oxley Certification and filing such with the Commission.
The Master Servicer will not request delivery of a certification under this
Section 4.1.3(c) unless the Depositor is required under the Exchange Act to file
an annual report on Form 10-K with respect to the Transaction.

      (d) On or before March 5 of each calendar year or if such day is not a
Business Day, the next Business Day (with a 10 calendar day cure period, but in
no event later than March 15), commencing in March 2008, the Servicer shall (i)
deliver to the Master Servicer a statement of compliance addressed to the Master
Servicer and signed by an authorized officer of the Servicer, to the effect that
(A) a review of the Servicer's activities during the immediately preceding
calendar year (or applicable portion thereof) and of its performance under this
Agreement during such period has been made under such officer's supervision, and
(B) to the best of such officers' knowledge, based on such review, the Servicer
has fulfilled all of its obligations under this Agreement in all material
respects throughout such calendar year (or applicable portion thereof) or, if
there has been a failure to fulfill any such obligation in any material respect,
specifically identifying each such failure known to such officer and the nature
and the status thereof and (ii) cause each Subservicer to deliver to the Master
Servicer a statement of compliance addressed to the Master Servicer and signed
by an authorized officer of the Subservicer, to the effect that (A) a review of
the Subservicer's activities during the immediately preceding calendar year (or
applicable portion thereof) and of its performance under the applicable
agreement during such period has been made under such officer's supervision, and
(B) to the best of such officers' knowledge, based on such review, the
Subservicer has fulfilled all of its obligations under the applicable agreement
in all material respects throughout such calendar year (or applicable portion
thereof) or, if there has been a failure to fulfill any such obligation in any
material respect, specifically identifying each such failure known to such
officer and the nature and the status thereof.

      (e) For so long as the Mortgage Loans are master serviced by the Master
Servicer, the Servicer shall provide to the Master Servicer, no later than March
5 of each year or if such day is not a Business Day, the next Business Day (with
a 10 calendar day cure period, but in no event later than March 15), commencing
in March 2008, financial statements for the most recently closed fiscal year,
together with an unqualified opinion thereon of an independent certified public
accountant who is a member of the American Institute of Certified Public
Accountants, unless the Master Servicer, in its reasonable discretion, decides
to waive this requirement regarding qualification.

      (f) Within five (5) calendar days after a Distribution Date, the Servicer
shall provide to the Master Servicer, to the extent known, in EDGAR-compatible
form, or in such other form as otherwise agreed upon by the Master Servicer and
the Servicer, the form and substance of any Additional Form 10-D Disclosure
applicable to the Servicer, as indicated in the table in Exhibit S to the
Pooling and Servicing Agreement. The Servicer acknowledges that the performance
by the Master Servicer of its duties under Section 3.12(a) of the Pooling and
Servicing Agreement relating to the timely preparation and filing of Form 10-D
is contingent upon the Servicer strictly observing all applicable deadlines in
the performance of its duties under this Section 4.1.3(f).

      (g) No later than March 5 (with a 10 calendar day cure period, but in no
event later than March 15) of each year that the Trust is subject to the
Exchange Act reporting requirements, commencing in March 2008, the Servicer
shall provide to the Master Servicer, to the extent known, in EDGAR-compatible
form, or in such other form as otherwise agreed upon by the Master Servicer and
the Servicer, the form and substance of any Additional Form 10-K Disclosure
applicable to the Servicer, as indicated in the table in Exhibit T to the
Pooling and Servicing Agreement. The Servicer acknowledges that the performance
by the Master Servicer of its duties under Section 3.12(b) of the Pooling and
Servicing Agreement relating to the timely preparation and filing of Form 10-K
is contingent upon the Servicer strictly observing all applicable deadlines in
the performance of its duties under this Section 4.1.3(g).

      (h) For so long as the Trust is subject to the Exchange Act reporting
requirements, no later than the end of business on the second Business Day after
the occurrence of a Reportable Event applicable to the Servicer, the Servicer
shall provide to the Master Servicer, to the extent known, in EDGAR-compatible
form, or in such other form as otherwise agreed upon by the Master Servicer and
the Servicer, the form and substance of any Form 8-K Disclosure Information
applicable to the Servicer, as indicated in the table in Exhibit U to the
Pooling and Servicing Agreement. The Servicer acknowledges that the performance
by the Master Servicer of its duties under Section 3.12(c) of the Pooling and
Servicing Agreement relating to the timely preparation and filing of Form 8-K is
contingent upon the Servicer strictly observing all applicable deadlines in the
performance of its duties under this Section 4.1.3(h).

      (i) The Servicer shall indemnify the Master Servicer, each affiliate of
the Master Servicer, the Trust, each broker dealer acting as underwriter or
initial purchaser, each Person who controls any of such parties and the
Depositor (within the meaning of Section 15 of the Securities Act and Section 20
of the Exchange Act), and the respective present and former directors, officers,
employees and agents of each of the foregoing and of the Depositor (each such
entity, a "Servicer Information Indemnified Party"), and shall hold each of them
harmless from and against any losses, damages, penalties, fines, forfeitures,
legal fees and expenses and related costs, judgments, and any other costs, fees
and expenses that any of them may sustain arising out of or based upon:

            (i)   (A) any untrue statement of a material fact contained or
                  alleged to be contained in any information, report,
                  certification, accountants' letter or other material
                  provided in written or electronic form under Sections 4.1.3
                  and 4.1.4 hereof by or on behalf of the Servicer, or
                  provided under Sections 4.1.3 or 4.1.4 by or on behalf of
                  any Subservicer or Subcontractor (collectively, the
                  "Servicer Information"), or (B) the omission or alleged
                  omission to state in the Servicer Information a material
                  fact required to be stated in the Servicer Information or
                  necessary in order to make the statements therein, in the
                  light of the circumstances under which they were made, not
                  misleading; provided, by way of clarification, that clause
                  (B) of this paragraph shall be construed solely by
                  reference to the Servicer Information and not to any other
                  information communicated in connection with a sale or
                  purchase of securities, without regard to whether the
                  Servicer Information or any portion thereof is presented
                  together with or separately from such other information;

            (ii)  any failure by the Servicer, any Subservicer or any
                  Subcontractor to deliver any information, report,
                  certification, accountants' letter or other material when
                  and as required under Sections 4.1.3 and 4.1.4, including
                  any failure by the Servicer to identify pursuant to Section
                  4.1.4(b) any Subcontractor "participating in the servicing
                  function" within the meaning of Item 1122 of Regulation AB;
                  or

            (iii) any breach by the Servicer of a representation or warranty
                  set forth in Section 5.2.

   In the case of any failure of performance described in clause (ii) of this
Section, the Servicer shall promptly reimburse the Master Servicer and the
Depositor, as applicable, for all costs reasonably incurred by each such party
in order to obtain the information, report, certification, accountants' letter
or other material not delivered as required by the Servicer, any Subservicer or
any Subcontractor. If the indemnification provided for herein is unavailable to
hold harmless any Servicer Information Indemnified Party, then the Servicer
agrees that it shall contribute to the amount paid or payable by such Servicer
Information Indemnified Party as a result of the losses, claims, damages or
liabilities of such Servicer Information Indemnified Party in such proportion as
is appropriate to reflect the relative fault of such Servicer Information
Indemnified Party on the one hand and the Servicer on the other in connection
with a breach of the Servicer's obligations under this Section 4.1.3 or the
Servicer's negligence, bad faith or willful misconduct in connection therewith.

      4.1.4. Use of Subservicers and Subcontractors. The Servicer shall not
hire or otherwise utilize the services of any Subservicer to fulfill any of
the obligations of the Servicer as servicer under this Agreement unless the
Servicer complies with the provisions of paragraph (a) of this Section. The
Servicer shall not hire or otherwise utilize the services of any
Subcontractor, and shall not permit any Subservicer to hire or otherwise
utilize the services of any Subcontractor, to fulfill any of the obligations
of the Servicer as servicer under this Agreement unless the Servicer complies
with the provisions of paragraph (b) of this Section.

      (a) It shall not be necessary for the Servicer to seek the consent of the
Master Servicer or the Depositor to the utilization of any Subservicer. The
Servicer shall cause any Subservicer used by the Servicer (or by any
Subservicer) for the benefit of the Master Servicer and the Depositor to comply
with the provisions of this Section and with Sections 4.1.3 and 5.2 of this
Agreement to the same extent as if such Subservicer were the Servicer, and to
provide such information regarding the Subservicer as the Master Servicer or the
Depositor request for the purpose of complying with Item 1108 of Regulation AB,
including at a minimum, the information set forth in Exhibit C. The Servicer
shall be responsible for obtaining from each Subservicer and delivering to the
Master Servicer any servicer compliance statement required to be delivered by
such Subservicer under Section 4.1.3(d), any assessment of compliance and
attestation required to be delivered by such Subservicer under Section 4.1.3(a)
and any certification required to be delivered to the Person that will be
responsible for signing the Sarbanes-Oxley Certification under Section 4.1.3(c)
as and when required to be delivered.

      (b) It shall not be necessary for the Servicer to seek the consent of the
Master Servicer or any Depositor to the utilization of any Subcontractor. The
Servicer shall promptly upon request provide to the Master Servicer (or any
designee of Master Servicer) a written description (in form and substance
satisfactory to the Master Servicer and the Depositor) of the role and function
of each Subcontractor utilized by the Servicer or any Subservicer, specifying
(i) the identity of each such Subcontractor, (ii) which (if any) of such
Subcontractors are "participating in the servicing function" within the meaning
of Item 1122 of Regulation AB (as then interpreted by the Commission), and (iii)
which elements of the Servicing Criteria will be addressed in assessments of
compliance provided by each Subcontractor identified pursuant to clause (ii) of
this paragraph. In the event of any disagreement among any of the parties hereto
regarding the application of the Commission's interpretation to a particular
Subcontractor, the determination of the Master Servicer shall be binding.

      As a condition to the utilization of any Subcontractor determined to be
"participating in the servicing function" within the meaning of Item 1122 of
Regulation AB, the Servicer shall cause any such Subcontractor used by the
Servicer (or by any Subservicer) for the benefit of the Master Servicer and the
Depositor to comply with the provisions of Section 4.1.3 (other than subsection
(d)) of this Agreement to the same extent as if such Subcontractor were the
Servicer. The Servicer shall be responsible for obtaining from each
Subcontractor and delivering to the Master Servicer any assessment of compliance
and attestation required to be delivered by such Subcontractor under Section
4.1.3, in each case as and when required to be delivered.

      4.1.5. Servicing Experience. The Servicer shall satisfactorily
demonstrate to the Master Servicer, in the Master Servicer's reasonable
discretion, the following experience:

      (a) that it has at least three (3) years of conventional mortgage loan
   servicing experience;

      (b) that it has a staff knowledgeable in servicing of Mortgage Loans
   and the administration of REO; and

      (c) that it has experience maintaining a servicing portfolio in excess
   of $1 billion.

      4.1.6. Material Changes. The Servicer shall promptly report to the
Master Servicer any change in its business operations, financial condition,
properties or assets since the date of the latest submitted financial
statements which could have a material adverse effect on the Servicer's
ability to perform its obligations hereunder. Events for which the Master
Servicer must receive notice include, but are not limited to, the following:

      (a) any change in the Servicer's business address and/or telephone
   number;

      (b) any merger, consolidation, or significant reorganization;

      (c) any changes in the Servicer's ownership whether by direct or
   indirect means. Indirect means include any change in ownership of the
   Servicer's parent;

      (d) any change in the Servicer's corporate name;

      (e) if the Servicer is a savings and loan association, any change in
   the Servicer's charter from federal to state or vice versa;

      (f) any decreases in capital, adverse alteration of debt/equity ratios,
   or changes in management ordered or required by a regulatory authority
   supervising or licensing the Servicer;

      (g) any significant adverse change in the Servicer's financial position;

      (h) entry of any court judgment or regulatory order in which the
   Servicer is or may be required to pay a claim or claims which, in the
   Master Servicer's reasonable opinion, have a material adverse effect on
   the Servicer's financial condition; and

      (i) the Servicer admits to committing, or is found to have committed, a
   material, in the Master Servicer's reasonable opinion, violation of any
   law, regulation, or order.

   Section 4.2  Errors and Omissions Insurance

      4.2.1. E & O Requirement. A Servicer shall maintain, at all times and
at its own expense, an Errors and Omissions Policy in an amount and with an
insurer acceptable to FNMA or FHLMC.

      4.2.2. E & O Scope. The Errors and Omissions Policy shall insure the
Servicer, its successors and assigns, against any losses resulting from
negligence, errors or omissions on the part of officers, employees or other
persons acting on behalf of the Servicer in the performance of its duties as
a Servicer pursuant to this Agreement.

      4.2.3. E & O Policy Maintenance. The Servicer shall maintain in effect
the Errors and Omissions Policy at all times and the Errors and Omissions
Policy may not be canceled, permitted to lapse or otherwise terminated
without the acquisition of comparable coverage by the Servicer.

      4.2.4. E & O Deductible. The terms of the Errors and Omissions Policy
shall provide for a deductible amount that is acceptable to FNMA or FHLMC
with respect to its approved mortgage loan servicers.

      4.2.5. E & O Qualifications. The Errors and Omissions Policy shall be
obtained by the Servicer from an insurer which satisfies FNMA or FHLMC
standards in this regard.

   Section 4.3  Fidelity Bond Coverage

      4.3.1. Fidelity Bond Requirement. A Servicer must maintain, at all
times, at its own expense, a Fidelity Bond in an amount and with an insurer
acceptable to FNMA or FHLMC and having terms that are acceptable to FNMA or
FHLMC.

      4.3.2. Fidelity Bond Coverage. The amount of Fidelity Bond coverage
shall be an amount acceptable to FNMA or FHLMC.

      4.3.3. Fidelity Bond Scope. The coverage of the Fidelity Bond must
explicitly insure the Servicer, its successors and assigns, against any
losses resulting from dishonest, fraudulent or criminal acts on the part of
Officers, employees or other persons acting on behalf of the Servicer.

      4.3.4. Fidelity Bond Maintenance. The Servicer must maintain in effect
the Fidelity Bond at all times and the Fidelity Bond may not be canceled,
permitted to lapse or otherwise terminated without thirty Business Days'
prior written notice by registered mail to the Master Servicer. Further, the
Fidelity Bond must provide that, or the insurer must state in writing to the
Master Servicer that, the Fidelity Bond shall not be cancelable without the
giving of notice as provided for in the prior sentence.

      4.3.5. Fidelity Bond Deductible. The terms of the Fidelity Bond must
provide for a deductible amount that does not exceed FNMA or FHLMC
requirements.

      4.3.6. Fidelity Bond Rating Requirement. The Fidelity Bond must be
obtained from a company which satisfies FNMA or FHLMC standards in this
regard.

   Section 4.4  Servicer's Liability

      4.4.1. Liability Exposure. Any and all losses not covered under the
Fidelity Bond or Errors and Omissions Policy, as a result of (i) the
respective deductible provisions thereof, (ii) the limits of coverage of the
Fidelity Bond or Errors and Omissions Policy or (iii) any claim denied which
should have been covered by the Fidelity Bond or the Errors and Omissions
Policy, as the case may be, according to the terms of this Agreement had the
Fidelity Bond or Errors and Omissions Policy been properly obtained and
maintained and respective claim been properly submitted for payment, shall be
borne by the Servicer, where the Servicer has acted in a manner in which the
Servicer is not relieved from liability as described in Section 4.4.2 hereof.

      4.4.2. Scope of Liability. Neither the Servicer or any subservicer
appointed by it, nor any of their respective partners, directors, officers,
employees or agents, or its delegees pursuant to Section 11.2.1 hereof, shall
be under any liability to the Master Servicer, the Trustee or, if applicable,
the Trust Administrator 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
Servicer, any subservicer or any of their respective partners, directors,
officers, employees or agents, or its delegees pursuant to Section 11.2.1
hereof, against any liability which would otherwise be imposed by reason of
willful misfeasance, bad faith or gross negligence in the performance of his
or its duties or by reason of reckless disregard of his or its obligations
and duties hereunder. The Servicer, any subservicer and any of their
respective partners, directors, officers, employees or agents, or its
delegees pursuant to Section 11.2.1 hereof, 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.

   Section 4.5  Indemnification

      4.5.1. Scope of Indemnity by Servicer. The Servicer hereby agrees to
indemnify and hold harmless (a) the Master Servicer, (b) the Trustee, (c) the
Trust Administrator (if applicable), (d) the Depositor and (e) the officers,
directors, employees, agents and Affiliates of any of the foregoing (any of
the foregoing hereinafter referred to as the "Indemnified Party"), from and
against any and all claims, losses, damages, liabilities, fines, settlements,
awards, offsets, defenses, counterclaims, actions, penalties, forfeitures,
legal fees, judgments and any other costs, fees and expenses (including,
without limitation, reasonable attorneys' fees and court costs) (any of the
foregoing which satisfy the criteria of this paragraph are collectively
referred to as "Claims"), either directly or indirectly arising out of, based
upon, or relating to (i) a breach by the Servicer, its officers, directors,
employees, or agents, or its delegees pursuant to Section 11.2.1 hereof, of
any representation or warranty contained herein, or any failure to disclose
any matter that makes such representation and warranty misleading or
inaccurate, or any inaccuracy in material information furnished by the
Servicer regarding itself, (ii) a breach of any representation or warranty
made by any Indemnified Party in reliance upon any such representation or
warranty, failure to disclose, or inaccuracy in information furnished by the
Servicer regarding itself, (iii) any failure of the Servicer, its officers,
directors, employees, or agents, or its delegees pursuant to Section 11.2.1
hereof, to perform any of its obligations under this Agreement in a manner in
which the Servicer is not relieved from liability as described in Section
4.4.2 hereof, and (iv) any acts or omissions of the Servicer, its officers,
directors, employees, or agents, or its delegees pursuant to Section 11.2.1
hereof, in a manner in which the Servicer is not relieved from liability as
described in Section 4.4.2 hereof. Each Indemnified Party shall cooperate
with the Servicer in the defense of such Claims and shall not settle any such
Claim without the prior written consent of the Servicer.

      4.5.2. Survival of Indemnity. This indemnification shall survive
purchase, transfer of any interest in a Mortgage Loan by any indemnified
party, the Liquidation of such Mortgage Loan, termination of the Servicer's
servicing rights with respect to such Mortgage Loan and termination or
expiration of this Agreement between the Servicer and the Master Servicer and
its successors and assigns.

   Section 4.6  Servicer's Compensation; Indemnification

      4.6.1. Servicing Fee Amount. In consideration of the services rendered
under this Agreement, absent default by the Servicer, the Servicer shall on
each Remittance Date be entitled to a monthly aggregate servicing
compensation (the "Monthly Servicing Compensation") for the preceding month
which shall equal the sum of (a) the Servicing Fee payable with respect to
each Mortgage Loan serviced during such month and (b) any interest earnings
on each Custodial P&I Account with respect to such month other than interest
earnings thereon which are payable to the Borrower pursuant to the Security
Instrument or applicable law, subject to any adjustment for Month End
Interest as described in Section 7.6.1. Absent default by the Servicer, the
Servicer shall also be entitled to retain in addition to the Monthly
Servicing Compensation any late charges, prepayment fees, penalty interest,
assumption fees, modification fees or deficiency recovery fees paid by the
Borrower, any Liquidation Profits or any other customary income or any
payments of interest related to any Prepayment in Full received by the
Servicer prior to the Applicable Unscheduled Receipt Period, which amounts
are not required to be deposited into the Custodial P&I Account. 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 for herein.

      4.6.2. Servicing Fee Source. The Servicing Fee for each Mortgage Loan
shall be payable solely from the interest portion of the related Monthly
Payment paid by the Borrower or other payment of interest paid with respect
to the Mortgage Loan, whether from the proceeds of foreclosure or any
judgment, writ of attachment or levy against the Borrower or his assets, or
from funds paid in connection with any prepayment in full or from Insurance
Proceeds or Liquidation Proceeds.

      4.6.3. Indemnification of Servicer. The Master Servicer hereby agrees
to indemnify and hold harmless the Servicer, any Subservicer appointed by it,
any of their respective directors, officers, employees or agents, or its
delegees for any action taken by the Servicer, any Subservicer or any of
their respective directors, officers, employees or agents, or its delegees or
for refraining from the taking of any action in good faith pursuant to this
Agreement, or for errors in judgment; provided, however, that the Servicer,
any Subservicer or any of their respective directors, officers, employees or
agents, or its delegees are not protected against any liability which would
otherwise be imposed by reason of willful misfeasance, bad faith or gross
negligence in the performance of his or its duties or by reason of reckless
disregard of his or its obligations and duties under this Agreement.

                                    ARTICLE 5

                         Representations and Warranties

   Section 5.1  General

      5.1.1. Reliance. The Master Servicer relies upon the representations
and warranties contained in this Article 5 hereof, in the acceptance of the
Servicer. The representations, warranties and covenants contained herein
shall inure to the benefit of the Master Servicer, the Trustee and, if
applicable, the Trust Administrator.

      5.1.2. Survival of Representations and Warranties. The representations
and warranties made herein shall survive termination of this Agreement, and
shall inure to the benefit of the Master Servicer, its respective successors,
Affiliates and assigns and each indemnified party under Section 4.5.1, its
respective successors, Affiliates and assigns, in each case, regardless of
any review or investigation made by or on behalf of such parties with respect
to any Mortgage Loan.

      5.1.3. Breach of Representation or Warranty. Upon breach of any
requirement or representation or warranty included in this Agreement relative
to any Mortgage Loan, the Servicer must:

      (a) Give written notice within two (2) days to the Master Servicer of
   the nature of the breach, the date on which the breach occurred or began
   and the Servicer's plans, if any, for curing the breach;

      (b) Effect a cure of the breach within 30 days after its occurrence or
   onset and a reasonable extension will be granted if warranted and
   necessary to fully cure the breach but in no event greater than 90 days;
   and

      (c) If no complete cure has been effected within such period the Master
   Servicer shall take such action against the Servicer as it deems necessary
   to protect the Trustee's interest in the Mortgage Loan.

      5.1.4. Assignment of Representations and Warranties. The Servicer
agrees that each of the Trustee and, if applicable, Trust Administrator may,
at any time, assign the representations and warranties given by the Servicer
as set forth in this Article 5 which it then possesses, in whole or in part,
or an undivided interest therein, to one or more Persons.

   Section 5.2  Servicer Representations and Warranties

      The Servicer represents and warrants, as of the date of this Agreement
and, except as otherwise provided, throughout the term of this Agreement,
that the statements set forth below in this Section 5.2 are true and accurate.

Relative to the Servicer:

      5.2.1. Qualification of Servicer. The Servicer is duly incorporated,
validly existing and in good standing under the laws of the state of its
incorporation and is duly qualified to do business and is in good standing
under the laws of each jurisdiction that requires such qualification wherein
it owns or leases any material properties, or in which it conducts any
material business or in which the performance of its duties under this
Agreement would require such qualification, except where the failure to so
qualify would not have a material adverse effect on (a) the Servicer's
performance of its obligations under this Agreement, (b) the value or
marketability of the Mortgage Loans, or (c) the ability to foreclose on the
related Mortgaged Properties.

      5.2.2. Requisite. The Servicer has the corporate power and authority to
own its properties and conduct any and all business required or contemplated
by this Agreement and to perform the covenants and obligations to be
performed by it under this Agreement. The Servicer holds all material
licenses, certificates and permits from all governmental authorities
necessary for conducting its business as it is presently conducted.

      5.2.3. No Conflicts. The execution and delivery of this Agreement are
within the corporate power of the Servicer and have been duly authorized by
all necessary actions on the part of the Servicer; neither the execution and
delivery of this Agreement by the Servicer, nor the consummation by the
Servicer of the transactions herein contemplated, nor compliance with the
provisions hereof by the Servicer, will (i) conflict with or result in a
breach of, or constitute a default under, any of the provisions of the
articles of incorporation or bylaws of the Servicer or any law, governmental
rule or regulation, or any judgment, decree or order binding on the Servicer
or any of its properties, or any of the provisions of any indenture,
mortgage, deed of trust, contract or other instrument to which it is a party
or by which it is bound or (ii) result in the creation or imposition of any
lien, charge or encumbrance upon any of its properties pursuant to the terms
of any such indenture, mortgage, deed of trust, contract or other instrument.

      5.2.4. Enforceable Agreement. This Agreement, when duly executed and
delivered by the Servicer, will constitute a legal, valid and binding
agreement of the Servicer, enforceable in accordance with its terms, subject,
as to enforcement or remedies, to applicable bankruptcy, reorganization,
insolvency or other similar laws affecting creditors' rights generally from
time to time in effect, and to general principles of equity.

      5.2.5. No Consents. No consent, approval, order or authorization of any
governmental authority or registration, qualification or declaration with any
such authority is required in order for the Servicer to perform its
obligations under this Agreement.

      5.2.6. Agency Approval. The Servicer has been approved by FNMA or FHLMC
and will remain approved as an "eligible seller/servicer" of conventional,
residential mortgage loans as provided in FNMA or FHLMC guidelines and in
good standing. The Servicer has not received any notification from FNMA or
FHLMC that the Servicer is not in compliance with the requirements of the
approved seller/servicer status or that such agencies have threatened the
servicer with revocation of its approved seller/servicer status.

      5.2.7. Financial Condition. The Servicer is not, and, with passage of
time, does not expect to become, insolvent or bankrupt. Except as disclosed
in the Prospectus, there is no material risk that the Servicer's financial
condition could affect one or more aspects of the performance by the Servicer
of its servicing obligations under this Agreement in a manner that could have
a material impact on the performance of the Mortgage Loans or the
Certificates. The Servicer shall promptly notify the Master Servicer of any
material adverse change of its financial condition.

      5.2.8. Servicing Practices. The servicing practices used by the
Servicer under this Agreement have been and are in all respects in compliance
with all federal, state and local laws, rules, regulations and requirements
in connection therewith and are in accordance with Prudent Servicing
Practices.

      5.2.9. No Impairment. There is no action, suit, proceeding or
investigation pending or, to the best of the Servicer's knowledge after due
inquiry, threatened, against the Servicer which, either in any one instance
or in the aggregate, may result in any material adverse change in business
operations, financial condition, properties or assets of the Servicer, or in
any material impairment of the right or ability of the Servicer to carry on
its business substantially as now conducted, or in any material liability on
the part of the Servicer, or which if adversely determined would affect the
validity of this Agreement or of any action taken or to be taken in
connection with the obligations of the Servicer contemplated herein, or which
would be likely to impair materially the ability of the Servicer to perform
under the terms of this Agreement.

      5.2.10. No Inquiries. The Servicer has not been the subject of an audit
by any of the Master Servicer, FHA, HUD, FDIC, FNMA, FHLMC, GNMA or any
Primary Mortgage Insurer, which audit included material allegations of
failure to comply with applicable loan origination, servicing or claims
procedures, or resulted in a request for repurchase of Mortgage Loans or
indemnification in connection with the Mortgage Loans.

      5.2.11. No Performance Triggering Event. Except as disclosed in the
Prospectus, the Servicer is not aware and has not received notice that any
default, early amortization or other performance triggering event has
occurred as to any securitization due to any act or failure to act of the
Servicer under such securitization.

      5.2.12. No Termination. Except as disclosed in the Prospectus, the
Servicer has not been terminated as servicer in a residential mortgage loan
securitization, either due to a servicing default or to application of a
servicing performance test or trigger.

      5.2.13. No Material Noncompliance. Except as disclosed in the
Prospectus or otherwise in writing provided by the Servicer to the Master
Servicer, there has been no material noncompliance with the applicable
servicing criteria with respect to securitizations of residential mortgage
loans involving the Servicer as a servicer within the past three (3) years.

      5.2.14. Servicing Policies and Procedures. Except as disclosed in the
Prospectus, no material changes to the Servicer's policies or procedures with
respect to the servicing function it will perform under this Agreement for
mortgage loans of a type similar to the Mortgage Loans have occurred during
the three-year period immediately preceding the date of this Agreement.

      5.2.15. No Affiliations. Except as disclosed in the Prospectus, there
are no affiliations, relationships or transactions relating to the Servicer
and any party identified in Item 1119 of Regulation AB of the type described
therein.

      5.2.16. Legal or Governmental Proceedings. Except as disclosed in the
Prospectus, there are no material legal or governmental proceedings pending
(or known to be contemplated) against the Servicer or any Subservicer that
would be material to Certificateholders.

Relative to the Mortgage Loans:

      5.2.17. Custodial and Escrow Accounts Current. All Custodial P&I
Accounts, Custodial T&I Accounts, Custodial Buydown Accounts and Escrow Funds
are maintained by the Servicer and have been maintained in accordance with
applicable law and the terms of the Mortgage Loans. The Escrow Items required
by the Mortgages which have been paid to the Servicer for the account of the
Borrower are on deposit in the appropriate Custodial Account. All funds
received by the Servicer in connection with the Mortgage Loans, including,
without limitation, foreclosure proceeds, Insurance Proceeds, condemnation
proceeds and principal reductions, have promptly been deposited in the
appropriate Custodial Account, and all such funds have been applied to reduce
the principal balance of the Mortgage Loans in question, or for reimbursement
of repairs to the Mortgaged Property or as otherwise required by applicable
law.

      5.2.18. Insurance Maintenance. Pursuant to the terms of the related
Security Instrument, all buildings or other improvements upon the related
Mortgaged Property are insured by an insurance policy or policies meeting the
requirements of Articles 15 and 16 hereof. The related Security Instrument
obligates the Borrower thereunder to maintain the hazard insurance policy at
the Borrower's cost and expense and, upon the Borrower's failure to do so,
authorizes the Mortgagee under the related Security Instrument to obtain and
maintain such insurance at the Borrower's cost and expense and to seek
reimbursement therefor from the Borrower. The hazard insurance policy is the
valid and binding obligation of the insurer, is in full force and effect, and
will be in full force and effect and inure to the benefit of the Trustee. The
Servicer and the Borrower have not engaged in any act or omission that would
impair the coverage of any such policy, the benefits of the endorsement
provided for herein, or the validity and binding effect of either. The
Mortgage Loan Documents permit the maintenance of an escrow account to pay
the premiums for the above mentioned insurance, and the requirement for such
escrows has not been waived, unless otherwise required by applicable state
law.

                                    ARTICLE 6

                              Custodial Accounting

   Section 6.1  In General

      6.1.1. Custodial Account Establishment. The Servicer must establish
appropriate custodial accounts for the benefit of the Trustee, its successors
and assigns for the deposit of funds collected in connection with such
Mortgage Loans. All custodial accounts and related records must be maintained
in accordance with sound and controlled accounting practices. The custodial
accounts maintained pursuant to this Agreement may be custodial accounts for
one or more other series of mortgage pass-through certificates issued by
Wells Fargo Asset Securities Corporation; provided, however, that (a) the
trustee for such other series under the related pooling and servicing
agreement(s) is the Trustee and (b) the master servicer for such other series
under the related pooling and servicing agreement(s) is the Master Servicer.

      6.1.2. Custodial Account Separateness. (a) At least one custodial
account for principal and interest (i.e., a Custodial P&I Account), one
custodial account for taxes and insurance (i.e., a Custodial T&I Account),
one custodial account for Subsidy Funds, if applicable (i.e., a Custodial
Subsidy Account), one custodial account for PITI Funds, if applicable (i.e.,
a Custodial PITI Account) and one custodial account for Buydown Funds, if
applicable (i.e., a Custodial Buydown Account), shall be established and
maintained for the Mortgage Loans. Except as specified in 6.1.2(b), without
the written consent of the Master Servicer, funds in these accounts may not
be commingled with other funds held by the Servicer. Each Custodial P&I
Account shall be established as an Eligible Account ("Eligible Custodial P&I
Account").

      (a) Notwithstanding anything to the contrary elsewhere in this
   Agreement, the Servicer may employ the Custodial T&I Account as the
   Custodial Subsidy Account, the Custodial PITI Account and/or the Custodial
   Buydown Account to the extent that the Servicer can separately identify
   any Subsidy Funds, PITI Funds or Buydown Funds, as applicable, deposited
   therein.

      6.1.3. Custodial Account Maintenance. The Servicer must ensure that
each Custodial P&I Account, Custodial T&I Account, Custodial Subsidy Account,
Custodial PITI Account and Custodial Buydown Account meets the following
guidelines:

      (a) the accounts must be Eligible Accounts;

      (b) the name of each Custodial P&I Account, Custodial T&I Account and
   Custodial Buydown Account shall include a reference to the name of the
   Trustee and the designation of the series of Mortgage Pass-Through
   Certificates or, where such accounts are accounts maintained for multiple
   series of mortgage pass-through certificates as described in Section
   6.1.1, a reference to "HSBC Bank USA, National Association, as trustee for
   Wells Fargo Asset Securities Corporation, Mortgage Pass-Through
   Certificates;"

      (c) the Servicer must transfer all funds on hand relating to such
   Mortgage Loans, Monthly Payments due on or after the related Cut-Off Date
   and any principal prepayments received after the related Cut-Off Date,
   into the appropriate custodial accounts meeting the requirements of
   Sections 6.1.1 and 6.1.2 hereof;

      (d) beginning with any payment due on or after the related Cut-Off
   Date, all collections on the Mortgage Loans must be credited to the
   appropriate custodial account no later than the second Business Day
   following receipt;

      (e) (i) the Servicer shall not permit the balance of any Custodial P&I
   Account to exceed the Threshold Amount or include any amounts then
   required to be remitted to the Certificate Account pursuant to Section
   18.3.1, (ii) in the event the Servicer collects amounts in excess of the
   Threshold Amount prior to the next scheduled transfer of funds to the
   respective Certificate Account, the Servicer must transfer the excess
   funds directly to the related Certificate Account by wire before the close
   of business on any day on which the amount on deposit in such account
   exceeds the Threshold Amount and (iii) in the event that the Servicer
   fails to transfer the funds in excess of the Threshold Amount to the
   related Certificate Account or to remit to the Certificate Account the
   Monthly Remittance on the Remittance Date pursuant to Section 18.3.1, the
   Master Servicer is authorized to debit such Custodial P&I Account and
   transfer such amounts to the related Certificate Account;

      (f) (i) the Servicer must file with the Master Servicer the appropriate
   ACH Debit Form for each Custodial P&I Account; (ii) the Master Servicer
   may monitor the principal balance of each Custodial P&I Account and may
   issue an ACH debit for amounts on deposit in any such account in excess of
   the Threshold Amount or otherwise in violation of Section 6.1.3(e); (iii)
   such amounts will immediately be deposited into the appropriate
   Certificate Account; and (iv) the ability of the Master Servicer to
   withdraw and remit such funds to the appropriate Certificate Account does
   not relieve the Servicer of its obligations to remit such funds to the
   related Certificate Account;

      (g) upon the establishment of a Custodial P&I Account, Custodial T&I
   Account or Custodial Buydown Account, the Servicer shall promptly advise
   the Master Servicer in writing of, or of any change in, the name and
   address of the depository, the account number and the title of the
   account; and

      (h) (i) establishment and maintenance of the Custodial P&I Account,
   Custodial T&I Account and Custodial Buydown Account will be an expense of
   the Servicer; (ii) such custodial accounts may be interest-bearing
   accounts provided that such accounts comply with all local, state and
   federal laws and regulations governing interest-bearing accounts and, in
   the case of a Custodial T&I Account or Custodial Buydown Account,
   governing Borrower escrow accounts; and (iii) the Servicer must ensure
   that all interest credited to any custodial account that is not due the
   Borrower is removed by the Servicer within 30 days after receipt of such
   interest.

      6.1.4. Escrow Investment. If the Servicer elects or is required by law
to deposit the Borrower's Escrow Funds into an interest-bearing custodial
account, the Servicer shall either (a) deposit such funds into an account
which permits withdrawal on demand so as to pay Escrow Items as they come
due, or (b) invest such funds in an Eligible Account so that adequate funds
mature the Business Day prior to the date payment is due for each Escrow
Item.

      6.1.5. Clearing Account. If the Servicer finds it necessary to use a
clearing account, the following guidelines must be followed:

      (a) the titles of such accounts must reflect that they are custodial in
   nature, and the depository in which the accounts are maintained must be
   informed in writing that the accounts are custodial accounts;

      (b) a check drawn on or funds transferred from a Custodial P&I Account
   or Custodial T&I Account must be deposited to a disbursement clearing
   account before or at the same time as any checks on the clearing account
   are issued;

      (c) a single clearing account must not be utilized both as a collection
   and disbursement clearing account;

      (d) the accounts must be held at depository institutions in which
   accounts are insured by the FDIC, through either the BIF or SAIF;

      (e) the Servicer must maintain adequate records and audit trails to
   support all debits and credits of each Borrower's payment records and
   accounts; and

      (f) collections deposited to a depository clearing account must be
   credited to the appropriate custodial account no later than one Business
   Day following receipt by the Servicer.

      6.1.6. Custodial Buydown Account. The Servicer must establish a
separate custodial account to hold Buydown Funds on Mortgage Loans being
serviced for the Trustee, its successors and assigns. These accounts must be
clearly marked to indicate that the Servicer is a custodian for Buydown Funds
being held for the Trustee, its successors and assigns.

      6.1.7. Certificate Account. The Master Servicer shall establish a
segregated Certificate Account in accordance with Section 3.01 of the Pooling
and Servicing Agreement.

      6.1.8. Custodial Subsidy Account. The Servicer must establish a
separate custodial account to hold Subsidy Funds on Mortgage Loans being
serviced for the Trustee, its successors and assigns. These accounts must be
clearly marked to indicate that the Servicer is a custodian for Subsidy Funds
being held for the Trustee, its successors and assigns.

      6.1.9. Custodial PITI Account. The Servicer must establish a separate
custodial account to hold PITI Funds on Mortgage Loans being serviced for the
Trustee, its successors and assigns. These accounts must be clearly marked to
indicate that the Servicer is a custodian for PITI Funds being held for the
Trustee, its successors and assigns.

   Section 6.2  Custodial P&I Account

      6.2.1. Mandatory Deposits. The following funds must be deposited into
each related Custodial P&I Account within two Business Days after the
Servicer's receipt of such amounts, or in the case of clauses (d) and (e)
hereof, on the Remittance Date or, in the case of clause (g) hereof, on the
Business Day after the Servicer's receipt of the Borrower's required monthly
payment under the related subsidy agreement:

      (a) Principal collections from related Mortgage Loans (including
   Prepayments in Full and Curtailments), together with Month End Interest,
   if applicable;

      (b) Interest collections from related Mortgage Loans (net of Servicing
   Fees or other compensation of the Servicer as set forth in Section 4.6.1);

      (c) Liquidation Proceeds and Insurance Proceeds from related Mortgage
   Loans other than proceeds held in an escrow account and applied to the
   restoration and repair of the related Mortgaged Property;

      (d) related P&I Advances;

      (e) any related PMI Advances;

      (f) the proceeds of any purchase, or substitution under a purchase
   agreement, of a related Mortgage Loan by the Servicer or a Representing
   Party, or sale of an REO;

      (g) an amount from the Custodial Subsidy Account that when added to the
   Borrower's payment will equal the full monthly amount due under the
   related Mortgage Note;

      (h) any amounts received pursuant to Section 15.7; and

      (i) an amount, if any, representing principal and/or interest with
   respect to a PITI Loan.

      6.2.2. Optional Deposits. The following funds may, but are not required
to, be deposited into each related Custodial P&I Account:

      (a) late charges;

      (b) prepayment fees;

      (c) penalty interest;

      (d) assumption fees;

      (e) Liquidation Profits; and

      (f) unapplied funds if the Borrower that remitted such funds is not
   required to maintain Escrow Funds.

The Servicer shall maintain separate accounting for each of the foregoing
types of funds. Provided that the Servicer is not in default of its
obligations hereunder, the Servicer may retain any late charges, prepayment
fees, penalty interest, assumption fees and Liquidation Profits as additional
servicing compensation.

      6.2.3. Permissible Withdrawals. The Servicer may make withdrawals from
each related Custodial P&I Account solely for the following:

      (a) remittances to the related Certificate Account;

      (b) reimbursement to itself for advances or for Capitalized Advance
   Amounts which have been recovered by subsequent collections including late
   payments, Liquidation Proceeds or Insurance Proceeds, to the extent funds
   on deposit recovered by such subsequent collections relate to the Mortgage
   Loans as to which such advances or Capitalized Advance Amounts were made;

      (c) interest earnings on deposits to the related Custodial P&I Account,
   but only to the extent that such interest has been credited;

      (d) removal of amounts deposited in error;

      (e) removal of charges or other such amounts deposited on a temporary
   basis in the account;

      (f) removal of Servicing Fees to the extent deposited therein; and

      (g) termination of the account.

      6.2.4. Account Beneficiary. Each Custodial P&I Account (other than any
Eligible Custodial P&I Account) must be titled to show the respective
interests of the Servicer as trustee and of the Master Servicer as
beneficiary.

      6.2.5. Use of Accounts. The Servicer shall not use the Custodial P&I
Account as a collection clearing account.

   Section 6.3  Custodial T&I Account

      6.3.1. Mandatory Deposits. The following funds must be deposited into
each respective Custodial T&I Account:

      (a) related Borrowers' Escrow Funds;

      (b) related T&I Advances;

      (c) the remaining balance of Title Insurance loss drafts;

      (d) rent receipts to offset any related T&I Advances by the Servicer;

      (e) unapplied funds;

      (f) Liquidation Proceeds from a related Mortgage Loan that offset a
   deficit balance in the related Borrower's Escrow Funds; and

      (g) amounts, if any, of PITI Funds representing taxes and insurance
   premiums due.

      6.3.2. Permissible Withdrawals. With respect to each related Borrower,
the Servicer may make withdrawals from each respective Custodial T&I Account
to the extent of the balance of such related Borrower's Escrow Funds for the
following:

      (a) timely payment of such related Borrower's taxes and insurance
   premiums;

      (b) refunds to such related Borrower of excess Escrow Funds collected
   from such Borrower;

      (c) recovering T&I Advances made with respect to such related Borrower
   by the Servicer;

      (d) payment of interest, if required, to such related Borrower on his
   Escrow Funds;

      (e) removal of any deposits made in error;

      (f) to transfer payment on account of Buydown Funds and/or Subsidy
   Funds to the Custodial P&I Account; and

      (g) termination of the account.

      6.3.3. Account Requirements. Each Custodial T&I Account is to be
designated in the name of the Servicer acting as an agent for the individual
related Borrowers to make such Escrow Item payments in order to show that the
account is custodial in nature. The Servicer is required to keep records
identifying each Borrower's payment deposited into the account.

      6.3.4. Account Balance. The Servicer must never allow any Custodial T&I
Account to become overdrawn as to any individual related Borrower. If there
are insufficient funds in the account, the Servicer must advance its own
funds to cure the overdraft.

   Section 6.4  Eligible Account Investments

      6.4.1. Eligible Investments Permitted .Unless prevented or restricted
by written notice of the Master Servicer pursuant to Section 6.4.5 hereof,
the Servicer may, from time to time, withdraw funds from a Custodial P&I
Account, Custodial Subsidy Account, Custodial PITI Account or Custodial
Buydown Account, and immediately invest such funds in Eligible Investments in
accordance with this Agreement. Upon the maturity of such Eligible
Investments, such funds shall be redeposited into the Eligible Account from
which they were drawn or into the Certificate Account.

      6.4.2. Eligible Investment Restrictions. No Eligible Investment shall
be sold or disposed of at a gain prior to maturity unless the Servicer has
obtained the consent of the Master Servicer.

      6.4.3. Eligible Investment Income. All income (other than any gain from
a sale or disposition of the type referred to in Section 6.4.2 hereof)
realized from any such Eligible Investment shall be for the benefit of the
Servicer as additional servicing compensation.

      6.4.4. Eligible Investment Losses. The amount of any losses incurred in
respect of any investments permitted under this Section 6.4 shall be
deposited in the Certificate Account by the Servicer out of its own funds
immediately as realized. The Master Servicer may, in its reasonable
discretion, from time to time, require the Servicer to provide a reasonable
amount of security to cover the risk of such investment losses. To the extent
that the Servicer shall not immediately deposit the amount of such losses in
the Certificate Account, the Master Servicer may immediately act against such
security as well as pursue all other remedies permitted by law.

      6.4.5. Eligible Investments Reports. The Servicer shall, at any time
provide such information and reports regarding its Eligible Investments under
this Agreement as the Master Servicer may request.

      6.4.6. Inter-Company Uses of Funds .Notwithstanding anything herein to
the contrary, and subject to the proviso set forth below, the Servicer is
permitted to withdraw funds from a Custodial P & I Account and commingle such
funds with the general assets of the Servicer to be used for general
corporate purposes until such time as such funds are required to be remitted
to the related Certificate Account; provided, however, that the provisions of
this Section 6.4.6 shall be applicable only for so long as (i) a master
guarantee substantially in the form of Exhibit A attached hereto has been
issued by Wells Fargo & Company for the benefit of the certificateholders of
the Mortgage Pass-Through Certificates and is currently in force and (ii) the
short-term debt or long-term debt of Wells Fargo & Company is rated by each
of the Rating Agencies in its highest short-term or highest long-term rating
category or in such lower rating category as would not result in a
downgrading or withdrawing of the rating then assigned to any of the Mortgage
Pass-Through Certificates by either Rating Agency or result in any of such
rated Mortgage Pass-Through Certificates being placed on credit review status
by either Rating Agency.

                                    ARTICLE 7

                            Mortgage Loan Accounting

   Section 7.1  In General

      7.1.1. Mortgage Loan Accounting Practices. The Servicer shall
administer the application and accounting of payments made on the Mortgage
Loans in accordance with the provisions of this Agreement.

      7.1.2. Record Keeping. The Servicer must maintain complete and accurate
records of all transactions affecting any Mortgage Loan. Each Mortgage Loan
must be clearly marked to indicate that it is being serviced for the Trustee,
its successors and assigns.

      7.1.3. Record Review. The Master Servicer and its designee have the
right to:

      (a) conduct reviews and audits of the Servicer's records and operating
   procedures during any Business Day; and

      (b) examine the Servicer's financial records, the Borrowers' Escrow
   Funds records and any and all other relevant documents and materials,
   whether held by the Servicer or by another on behalf of the Servicer, to
   ensure compliance with terms and conditions of this Agreement and the
   Master Servicer's standards.

   Section 7.2  Mortgage Loan Records

      7.2.1. Account Records. Permanent Mortgage Loan account records must be
maintained by the Servicer for each Mortgage Loan. Each account record must
be identifiable by the Servicer Loan Number.

      7.2.2. Account Record Information. The Servicer shall maintain the
following information for each Mortgage Loan in a readily accessible form:

      (a) the Master Servicer Loan Number;

      (b) the current Unpaid Principal Balance;

      (c) the date of receipt, amount of payment and distribution of such
   payment for each Monthly Payment received with respect to such Mortgage
   Loan as to each related Due Date;

      (d) for ARM Loans, the current Mortgage Interest Rate, all limitations
   contained in the Mortgage Note with respect to periodic adjustments in the
   Mortgage Interest Rate, the scheduled Interest Adjustment Dates, Payment
   Adjustment Dates, the Gross Margin and the Index;

      (e) other transactions affecting the amounts due from or payable to the
   related Borrower;

      (f) the current outstanding balances of principal and interest
   deposits, advances, taxes and insurance deposits and unapplied payments
   with respect to such Mortgage Loan;

      (g) any overdraft of the Borrower's Escrow Funds;

      (h) any servicing reports or loan histories; and

      (i) any other information customarily maintained by a mortgage loan
   servicer of one to four family residential mortgages.

      7.2.3. Accounting Practice. Except as otherwise provided herein, all
Mortgage Loan account records must be maintained according to (a) the Uniform
Single Attestation Program for Mortgage Bankers and (b) where applicable,
sound and generally accepted accounting practices.

      7.2.4. Access to Certain Documentation and Information Regarding the
Mortgage Loans At the request of the Master Servicer, the Servicer shall
provide to the Master Servicer, the Office of Thrift Supervision, the FDIC
and the supervisory agents and examiners of the Office of Thrift Supervision
and the examiners of the FDIC, as appropriate, access to the documentation
regarding the Mortgage Loans required by applicable regulations of the Office
of Thrift Supervision or the FDIC, such access being afforded without charge
but only upon reasonable request and during normal business hours at the
offices of the Servicer designated by it. The Servicer shall permit such
representatives to photocopy any such documentation and shall provide
equipment for that purpose at a charge reasonably approximating the cost of
such photocopying to the Servicer.

   Section 7.3  Accounting Procedures

      7.3.1. Principal and Interest Computation. All Mortgage Loans must
amortize with interest calculated and paid in arrears. Under this method, the
interest due from a Borrower on a Due Date is calculated based on (a) the
Unpaid Principal Balance of the related Mortgage Loan prior to application of
the principal portion of the related current Monthly Payment, (b) thirty days
interest at the related Mortgage Interest Rate and (c) adjusted as herein
provided for the effects of Curtailments, Partial Liquidation Proceeds,
Prepayments in Full and Liquidations. The calculated interest portion is then
subtracted from the related Monthly Payment to obtain the principal portion.
The principal portion is then applied to the Unpaid Principal Balance of the
related Mortgage Loan. The amount to be applied to interest for a multiple
installment must be calculated using the Unpaid Principal Balance of the
related Mortgage Loan remaining after the previous interest calculation and
principal application.

      7.3.2. Amortization Requirement. The amortization of each Mortgage Loan
must reduce to zero, or as to Balloon Loans, the respective Balloon Amount,
at the end of the Mortgage Loan term through the application of regular
monthly payments. Capitalization of interest is not permitted, except as
provided by the terms of any Mortgage Loan that provides for negative
amortization.

      7.3.3. Negative Amortization. To the extent any Mortgage Loan provides
for negative amortization, such as a GPM or GPARM Loan, the Servicer must
assure that the Unpaid Principal Balance of such Mortgage Loan never exceeds
the related Maximum Negative Amortization Amount, and that the related
Monthly Payment is recast as provided for in the Mortgage Note such that the
balance fully amortizes within the remaining term of such Mortgage Loan.

      7.3.4. Interest Calculations. Monthly interest calculations for periods
of a full month must be based on a 30-day month and a 360-day year. Factors
used for such calculations should be carried to a minimum of three decimal
places. The dollar amount of any interest payment shall be carried out to a
minimum of three decimal places. Interest calculations for a period of less
than a full month must be based on a 365-day year.

      7.3.5. Buydown Loans. The Servicer must amortize a Mortgage Loan for
which Buydown Funds are applied at the Mortgage Interest Rate, not at the
buy-down rate, in order to ensure that payments are collected to amortize
properly the Mortgage Loan.

   Section 7.4  Application Procedure

      7.4.1. Application Priority. A payment from a Borrower will normally
consist of interest, principal, deposits for insurance and taxes and late
charges, if applicable. Payments received from Borrowers must be applied in
the order provided for in the related Security Instrument. To the extent not
inconsistent with the related Security Instrument, such payments shall be
applied in the following order:

      (a) required monthly interest;

      (b) required monthly principal;

      (c) deposits for taxes and insurance;

      (d) prepayment charges; and

      (e) any fees which may be retained by the Servicer, including late
   charges, returned check fees, and assumption fees.

      7.4.2. [Reserved].

      7.4.3. Advance Payments. Payments made by the Borrower to satisfy
future installments must be accounted for as prepaid installments of
principal and interest. The Servicer should contact the Borrower if there is
a question about the Borrower's intention in making any unscheduled payment.

   Section 7.5  Curtailments

      7.5.1. Curtailment Amount. The Servicer may accept Curtailments at any
time. If a Mortgage Loan is delinquent, funds received must first be applied
to bring the Mortgage Loan current. If there are excess funds after the
application of amounts received from the Borrower to pay the related Monthly
Payment, the excess funds represent a Curtailment and may be applied as a
partial principal prepayment.

      7.5.2. Curtailment Application. If a Curtailment is received on or
after the Due Date, the Servicer may either (i) retroactively apply the
Curtailment to the Scheduled Principal Balance of the related Mortgage Loan
as of the Due Date, or (ii) to the extent permitted by law and the Mortgage
Loan, apply such Curtailment at the end of the current period. The interest
portion of the next installment due is then calculated based on the Unpaid
Principal Balance of the related Mortgage Loan after application of the
Curtailment.

      7.5.3. Effect of Curtailment. A Curtailment may not be used to reduce
the related Mortgage Interest Rate for any Mortgage Loan or to postpone the
Due Date of any payment.

      7.5.4. Curtailment Transmission. Each Curtailment must be deposited
into the related Custodial P&I Account within one Business Day after receipt
and must be remitted no later than the regularly scheduled Monthly Remittance
to the related Certificate Account.

   Section 7.6  Liquidations

      7.6.1. Month End Interest. If a Prepayment in Full of a Mortgage Loan
occurs, such prepayment is received by the Servicer after the Applicable
Unscheduled Receipt Period ending in the month in which such prepayment
occurs, and the Servicer does not receive a full 30 days of interest
(calculated on a 30-day month, 360-day year basis) on the prepaid amount for
the month in which such Prepayment in Full occurs, the Servicer must pay the
Month End Interest on all such Mortgage Loans so prepaid in full on the
Remittance Date in the month following the month of such prepayment. Any
Month End Interest Shortfall for any month shall not be recoverable from the
Servicer or any other source in the future. The payment of Month End Interest
by the Servicer, as provided for above, shall not be an "advance" and shall
not be reimbursable from the proceeds of any Mortgage Loan.

      7.6.2. Liquidation Reports. The Servicer will report information with
respect to Liquidations in the monthly reports delivered to the Master
Servicer by the eighteenth calendar day of each succeeding month.

      7.6.3. Deposit of Funds. Within one day after the Liquidation of a
Mortgage Loan, the Servicer shall deposit the related Liquidation Proceeds
together with the related Month End Interest into the related Custodial P&I
Account.

      7.6.4. Document Request. After any Liquidation, the Servicer must
complete and send a Request for Release of Documents to the Custodian to
ensure the release of documents within the period required by applicable
state law.

   Section 7.7  Realized Losses

      7.7.1. Liquidation Realized Loss Determination. With respect to the
calculation of a Realized Loss suffered on the related Mortgage Loan on a
Liquidation of such Mortgage Loan, the amount of such Realized Loss is equal
to (a) the sum of:

      (i)   Unpaid Principal Balance;

      (ii)  unpaid interest accrued at the related Mortgage Interest Rate;

      (iii) attorneys' fees and other foreclosure and sale expenses;

      (iv)  unpaid taxes;

      (v)   unpaid property maintenance expenses;

      (vi)  unpaid insurance premiums; and

      (vii) hazard loss expenses;

   less the sum of:

      (i)   the balance of Escrow Funds, if any;

      (ii)  any refund of any Hazard Insurance premium;

      (iii) rental income receipts;

      (iv)  Insurance Proceeds or PMI Advances;

      (v)   cash proceeds of any foreclosure sale;

      (vi)  proceeds from sale of a REO; and

      (vii) any amounts received pursuant to bankruptcy or insolvency
            proceedings.

      7.7.2. Bankruptcy Realized Loss Determination. With respect to the
calculation of a Realized Loss on a Mortgage Loan subject to a Deficient
Valuation, the amount of the Realized Loss is the difference between the
Unpaid Principal Balance of the related Mortgage Loan immediately prior to
the Deficient Valuation and the Unpaid Principal Balance as reduced by the
Deficient Valuation.

      7.7.3. Reporting Requirement. As to any defaulted Mortgage Loan, the
Servicer must account to, and report in writing to, the Master Servicer as to
any Realized Loss (or gain) upon the Liquidation or Deficient Valuation in
respect of such Mortgage Loan.

      7.7.4. Servicer's Liability. Except in the case of a purchase by the
Servicer of a Mortgage Loan from the Trustee thereof due to a breach of a
representation or warranty by the Servicer or failure to perform the
servicing procedures as set forth in this Agreement, the Servicer is not
liable for any Realized Loss on any Mortgage Loan.

                                    ARTICLE 8

                                    ARM Loans

   Section 8.1  ARM Loan Servicing

      8.1.1. In General. It is the Servicer's responsibility to enforce each
ARM Loan (and any other Mortgage Loan) according to its terms and in
conformity with all applicable law. The Servicer's records must, at all
times, reflect the then-current Mortgage Interest Rate and Monthly Payment
for such ARM Loan and the Servicer must timely notify the Borrower of any
changes to the Mortgage Interest Rate and/or the Borrower's Monthly Payment.

      8.1.2. Servicer's Liability. If the Servicer fails to make either a
timely or accurate adjustment to the Mortgage Interest Rate or Monthly
Payment for an ARM Loan or to notify the Borrower of such adjustments, and
subsequently receives a short Monthly Payment, the Servicer must pay from its
own funds any shortage until the Servicer has made the necessary corrections
in conformance with applicable law so as to secure the correct Monthly
Payment from the Borrower. In the event that such error results in the
Borrower making a Monthly Payment in excess of the amount which he should
have made if such adjustment were properly calculated, then the Servicer
shall promptly (a) make the required adjustment to the Borrower's Monthly
Payment and Mortgage Interest Rate so that they reflect the amounts as
properly calculated as of the related Payment Adjustment Date, (b) refund to
the Borrower the amount of any such excess received by the Servicer from the
related Payment Adjustment Date and (c) deduct from the respective Custodial
P&I Account or the Certificate Account the amount of such refund to reimburse
the Servicer for making such refund. Any amounts paid by the Servicer
pursuant to this Section shall not be an advance and shall not be
reimbursable from the proceeds of any Mortgage Loan.

      8.1.3. Adjustment Reports. All Mortgage Interest Rate and Monthly
Payment adjustments must be reported to the Master Servicer in a ARM Loan
change report.

      8.1.4. Substitute Index. If the Index required to be used to determine
the Mortgage Interest Rate for a Mortgage Loan is not available on an
Interest Adjustment Date, the Servicer, will select an index that is based on
comparable information, over which the Servicer has no control and that is
readily verifiable.

   Section 8.2  Notice of Periodic Adjustment

      8.2.1. Notice Requirement. The Notice of Periodic Adjustment is the
legal and official announcement to the Borrower of an ARM Loan of a change in
the Mortgage Interest Rate or the Monthly Payment. The Servicer must send
this notice to the Borrower, as stated in the related Mortgage Note and in
accordance with applicable law, and at least 25 days before each Payment
Adjustment Date.

      8.2.2. Notice Contents. Each Notice of Periodic Adjustment pertaining
to an ARM Loan shall meet the requirements and specifications of the Security
Instrument, the Mortgage Loan, and applicable federal or state laws or
regulations.

   Section 8.3  ARM Loan Conversion

      8.3.1. Servicer's Determination. In the event a Borrower with a
convertible ARM Loan exercises its option to convert such Mortgage Loan to a
fixed interest rate, the Servicer will determine whether the conditions and
qualifications for conversion have been met and determine the fixed rate to
be applied to such Mortgage Loan pursuant to the terms of the related
Mortgage Note.

      8.3.2. Purchase by Servicer. The Servicer shall purchase such Converted
Mortgage Loan from the applicable Trustee at the Purchase Price by depositing
the Purchase Price into the Custodial P&I Account.

                                    ARTICLE 9

                               Mortgage Loan Files

   Section 9.1  Owner Mortgage Loan Files and Retained Mortgage Loan Files

      9.1.1. Owner Mortgage Loan File and Retained Mortgage Loan File
Requirements. For each Mortgage Loan, the Master Servicer shall ensure that
the Custodian will maintain an Owner Mortgage Loan File on behalf of the
Trustee that contains each of the documents or instruments specified in
Section 2.01(a) of the Pooling and Servicing Agreement.

      For each Mortgage Loan after a Document Transfer Event, the Servicer
shall deliver to the Custodian the Retained Mortgage Loan File that contains
each of the documents or instruments specified in Section 2.01(b) of the
Pooling and Servicing Agreement and the Custodian will maintain such Retained
Mortgage Loan File on behalf of the Trustee.

      9.1.2. Custodian .If the original Security Instrument or the Assignment
from the respective prior owner of the related Mortgage Loan to the Trustee
or, if applicable, to the Trust Administrator, on behalf of the Trustee, has
not been delivered to the Custodian on the date of the transfer of ownership
of such Mortgage Loan to the Trustee because it is in the process of being
recorded, the Servicer shall, within five Business Days after its receipt of
the original recorded document, deliver it to the Custodian. The Servicer
shall promptly deliver to the Custodian any other Mortgage Loan Document to
be included in an Owner Mortgage Loan File, charged to the custody of the
Custodian, that comes into Servicer's possession.

      9.1.3. Release of Documents from Owner Mortgage Loan File or Retained
Mortgage Loan File. In the event any document contained in an Owner Mortgage
Loan File or, after the Document Transfer Event, a Retained Mortgage Loan
File, is needed by the Servicer for the proper servicing of a Mortgage Loan,
the Servicer must send to the Trustee or the Custodian, as the case may be,
two copies of a Request for Release as defined in the Pooling and Servicing
Agreement of documents. The Master Servicer hereby authorizes the Trustee or
the Custodian, as the case may be, to release such Owner Mortgage Loan Files
or Retained Mortgage Loan Files after receipt of such Servicer's request (i)
upon payment in full of such Mortgage Loan, (ii) when necessary for
foreclosure or (iii) for such other cause as the Master Servicer deems
appropriate, in its reasonable discretion. The Servicer shall be responsible
for such Mortgage Loan Documents while they are in its possession and will be
deemed to hold such Owner Mortgage Loan Files or Retained Mortgage Loan Files
in trust for the benefit of the Trustee. If such Mortgage Loan has not been
paid in full or otherwise liquidated, the Servicer shall promptly return such
Owner Mortgage Loan Files or Retained Mortgage Loan Files when they are no
longer required. Notwithstanding the foregoing, unless such Mortgage Loan has
been liquidated or the related Owner Mortgage Loan Files or Retained Mortgage
Loan Files have been delivered to an attorney, a public trustee or other
public official in order to foreclose on the related Mortgaged Property, all
such Owner Mortgage Loan Files or Retained Mortgage Loan Files released by
the Trustee or the respective Custodian, as the case may be, must be returned
within 60 calendar days after their release.

      9.1.4. Execution by Trustee. In the event the Trustee's signature is
required on any document with respect to a Mortgage Loan for any reason,
including payment in full, assumption or foreclosure, the Servicer shall
deliver to the Trustee a written notice requesting that the Trustee execute
such documents and certifying as to the reason such documents are required.
Upon receipt of such executed documents, the Servicer shall record, file or
deliver such documents as appropriate for the proper servicing of such
Mortgage Loan.

      9.1.5. Representing Party Officers' Certificate. If it is necessary for
the respective Representing Party to deliver an Officers' certificate with
respect to the existence of a Title Insurance policy or a Primary Mortgage
Insurance policy for several Mortgage Loans, the Master Servicer may consent
to the delivery of a single Officers' certificate of the respective
Representing Party for a schedule of mortgage loans in lieu of a separate
Officers' certificate for each such Mortgage Loan.

      9.1.6. Custodial Fees. The Servicer is responsible for the related
ongoing fees of each Custodian. If for any reason at any time the Master
Servicer pays custodial fees (including any payment made by the Master
Servicer pursuant to Section 3.4 of the Custodial Agreement), the Servicer
will promptly reimburse the Master Servicer for such payments.

   Section 9.2  Servicer Mortgage Loan Files

      9.2.1. Servicer Mortgage Loan File Requirements. The Servicer must
maintain a Servicer Mortgage Loan File for each Mortgage Loan, which may be
distributed among several different files, each of which shall be clearly
marked with the Servicer Loan Number and shall be readily accessible to the
Master Servicer during regular business hours, that includes the following:

      (a) copies of each of the documents listed in Section 2.01 of the
   Pooling and Servicing Agreement that are held by the Custodian as part of
   the Owner Mortgage Loan File or Retained Mortgage Loan File, if applicable;

      (b) where such coverage is not provided under a blanket policy
   maintained by the Servicer, an original Hazard Insurance policy, or a copy
   thereof, or a certificate of insurance issued by the applicable insurer or
   its agent indicating such a policy is in effect for the related Mortgaged
   Property;

      (c) a Flood Insurance policy or a certificate of insurance issued by
   the insurer or its agent indicating that such a policy is in effect with
   respect to the related Mortgaged Property, if Flood Insurance is required
   pursuant to the provisions of Section 15.4 or Section 16.6 hereof for such
   Mortgaged Property;

      (d) originals or copies of all documents submitted to a Primary
   Mortgage Insurer for credit and property underwriting approval with
   respect to the related Mortgaged Property, if Primary Mortgage Insurance
   is required pursuant to the provisions of Section 15.2 hereof for such
   Mortgaged Property;

      (e) the originals of all RESPA and Regulation Z disclosure statements
   executed by the Borrower with respect to such Mortgage Loan;

      (f) the related Appraisal Report made at the time such Mortgage Loan
   was originated;

      (g) the HUD-1 or other settlement statement for the purchase or
   refinance, as the case may be, of the Mortgaged Property by the Borrower
   and mortgagor under the related Mortgage Note and Security Instrument with
   respect to such Mortgage Loan;

      (h) evidence of any tax service contract, if any;

      (i) copies of documentation, including the appropriate approval by the
   Master Servicer, relating to any modifications to the related original
   Mortgage Loan Documents;

      (j) documentation, including the appropriate approval by the Master
   Servicer, relating to any releases of any collateral supporting such
   Mortgage Loan;

      (k) collection letters or form notices sent to the Borrower with
   respect to such Mortgage Loan, but only if the Servicer does not maintain
   separate collection files, including all collection letters or notices,
   indexed by Borrower;

      (l) foreclosure correspondence, bankruptcy correspondence and legal
   notifications, if applicable with respect to the related Mortgaged
   Property; and

      (m) all other related Mortgage Loan Documents which are customarily
   maintained in accordance with Prudent Servicing Practices in a mortgage
   loan file in order to properly service a mortgage loan including, without
   limitation, documents regarding title claims.

      9.2.2. Servicer Mortgage Loan File Access. The Servicer acknowledges
that each Servicer Mortgage Loan File shall be held in trust for the Trustee.
The Servicer further acknowledges that the Master Servicer may, from
time-to-time, request immediate delivery of any or all Mortgage Loan records
and documents to the Master Servicer, the Trustee, the Custodian or another
entity designated by the Master Servicer, and the Servicer shall thereupon
immediately deliver such records and documents, at the expense of the
Servicer. The Servicer agrees to permit the Master Servicer, from time to
time to conduct audits or inspections of any Servicer Mortgage Loan Files at
one or more of the Servicer's offices during normal business hours with
advance notice. The Servicer must grant the Master Servicer access to all
books, records and files relating to the Servicer's systems and procedures
for servicing Mortgage Loans as to all Servicer Mortgage Loan Files or to the
Servicer's compliance with the terms and conditions of this Agreement.

      9.2.3. Alternate Media. Subject to any applicable law concerning
document retention requirements, the Servicer may maintain any Servicer
Mortgage Loan File, or any portion thereof, on microfilm, microfiche, optical
storage or magnetic media and may retain the microfilm, microfiche, optical
storage or magnetic media in lieu of hard copies of the documents required to
be maintained in such Servicer Mortgage Loan Files. The following
requirements must be met:

      (a) the process must accurately reproduce originals onto a durable
   medium;

      (b) unless the Master Servicer provides otherwise by notice to the
   Servicer, the Master Servicer Loan Number must be clearly marked on the
   copies or optical storage or magnetic media;

      (c) the copies or optical storage or magnetic media must be easily
   transferable to legible hard copies of the material relating to the
   Mortgage Loans; and

      (d) backup copies of the microfilm, microfiche, optical storage or
   magnetic media must be made by the Servicer and retained off-site to
   protect against fire and other hazard losses.

If the copies, optical storage or magnetic media become damaged or lost for
any reason, the Servicer must bear the entire cost of restoring each Servicer
Mortgage Loan File and any other related documents which had been transferred
to microfilm, microfiche, optical storage or magnetic media. The Servicer
also must bear all costs of reproducing legible hard copies reasonably
requested by the Master Servicer. The Master Servicer may reasonably request
copies of any Servicer Mortgage Loan File in optical storage or magnetic
media which the Servicer has previously transferred to magnetic media or
optical storage, as the case may be. The Servicer shall furnish to the Master
Servicer optical storage or magnetic media copies of the requested Servicer
Mortgage Loan File in such format as maintained by the Servicer at the
Servicer's expense.

   Section 9.3  Requisite Form

      9.3.1. Form of Endorsements. Except for endorsements in blank, the
Servicer shall require that endorsements of any Mortgage Notes comply with
the format specified in Section 2.01(c) of the Pooling and Servicing
Agreement.

      9.3.2. Form of Assignment. Except for assignments in blank or in the
case of any Security Instrument registered in the name of MERS, the Servicer
shall require that assignments of any Security Instrument comply with the
following format specified in Section 2.01(c) of the Pooling and Servicing
Agreement.

                                   ARTICLE 10

                                     Escrows

   Section 10.1 Escrow Criteria

      10.1.1. Escrow Requirement. Unless, (a) at the origination of a
Mortgage Loan the Borrower is not required to make Escrow Item payments
thereafter, (b) Escrow Funds collection has been waived pursuant to Section
10.5.1 hereof, or (c) the collection of Escrow Funds is precluded by
applicable law, the Servicer must continue to collect 1/12th of the annual
total for all Escrow Items with each Monthly Payment on such Mortgage Loan,
as determined pursuant to Section 10.3.1 hereof.

      10.1.2. Mortgage Loans without Escrow. If the Servicer is not required
to collect Escrow Funds on a Mortgage Loan, the Servicer shall require proof
of payment of all taxes, ground rents, assessments, insurance or other
charges, or use other means commonly used in the mortgage industry to
ascertain that such items are paid on a timely basis.

   Section 10.2 Payment of Escrow Items

      10.2.1. Escrow Payment Obligation. Where the Servicer is responsible
for the collection of Escrow Funds with respect to a Mortgage Loan, the
Servicer shall promptly pay all bills for any Escrow Items in such a manner
as to avoid late charges or penalties and to take advantage of any available
discount.

      10.2.2. Escrow Item Payments. Where (a) the Servicer has been
collecting Escrow Funds with respect to a Mortgage Loan, or (b) the Borrower
has not been obliged to make Escrow Funds payments or such payments have been
waived and such Borrower has failed to timely pay obligations which otherwise
would be Escrow Items, the Servicer must pay any obligation (i) which could
become a first lien on the related Mortgaged Property, or (ii) to maintain in
force the applicable Insurance Policies. Where Escrow Funds are maintained by
the Servicer, such obligations should be paid from the Borrower's Escrow
Funds, or in accordance with Section 10.2.3 hereof.

      10.2.3. Escrow Fund Insufficiency. When a Borrower's Escrow Funds are
insufficient to pay taxes, assessments and premiums, when due, subject to
applicable law, the Servicer must attempt to obtain the additional funds from
such Borrower. If sufficient additional funds have not been recovered by the
time the payment is due, the Servicer must advance its own funds to ensure
prompt payment. The Servicer may elect to advance funds prior to attempting
to obtain the additional funds from such Borrower; however, to the extent
permitted by applicable law, the Servicer shall thereafter attempt to obtain
the advanced funds from the Borrower or collect such advanced funds as
described in Section 10.3.3.

      10.2.4. Nonpayment Notice. The Servicer must notify the Master Servicer
immediately of any Escrow Item that does not conform to either FNMA or FHLMC
standards.

   Section 10.3 Escrow Fund Determination

      10.3.1. Escrow Funds Analysis. Subject to all applicable Federal, State
and local laws, the Servicer must conduct an analysis of each Borrower's
Escrow Funds at least annually to determine the monthly deposits which must
be made by such Borrower. The analysis shall be performed based upon (a)
reasonable projections of the expenses to be paid from the Escrow Funds and
(b) that as such expenses come due, the Escrow Funds balance shall at all
times be sufficient to effect the payment of such expenses, unless a lower
amount is required by applicable law. Each Borrower must receive a statement
of this analysis. The analysis also must determine whether there is a surplus
or deficiency in such Borrower's Escrow Funds.

      10.3.2. Escrow Fund Surplus. A surplus in a Borrower's Escrow Funds
shall be refunded to such Borrower or taken into consideration in determining
the amount to be collected for Escrow Funds.

      10.3.3. Escrow Fund Deficiency. Where it is determined that a
deficiency exists in such Borrower's Escrow Funds, such Borrower may be
requested to pay the shortage in full or the deficiency may be taken into
consideration in determining the amount to be collected for Escrow Funds
during the next twelve months (or such longer period as may be permitted in
the discretion of the Servicer).

   Section 10.4 Records

      10.4.1. Escrow Funds Records. The Servicer shall keep records of Escrow
Funds collected from each Borrower.

      10.4.2. Escrow Obligations Records. The Servicer must maintain accurate
records of the imposition of Escrow Item obligations and the payment of
Escrow Items.

   Section 10.5 Escrow Waiver

      10.5.1. Waiver Conditions. For any Mortgage Loan (other than a GPM or
GPARM Loan which provides for negative amortization in the future) that has
amortized down so that its current LTV is 80% or less, the Servicer may waive
the Borrower's future obligation to make Escrow Funds payments provided:

      (a) the Unpaid Principal Balance of such Mortgage Note divided by the
   value of the Mortgaged Property based on an appraisal made within 60 days
   of the date of determination is 80% or less;

      (b) such Mortgage Loan is at least 12 months old; and

      (c) such Mortgage Loan has not been more than 30 days delinquent during
   the preceding 12 months.

      10.5.2. Waiver Rescission. The Servicer shall enforce the Escrow Funds
requirements with respect to any Mortgage Loan if the related Borrower fails
to act responsibly in making the required payments.

                                   ARTICLE 11

                       Collection and Servicing Practices

   Section 11.1 General Servicing Requirements

      11.1.1. Servicing Practices. The Servicer agrees to service Mortgage
Loans in accordance with the requirements of this Agreement. In general,
where not otherwise expressly required by the provisions of this Agreement,
the Servicer shall service the Mortgage Loans in accordance with Prudent
Servicing Practices and generally in accordance with FNMA guidelines. As to
each Mortgage Loan, the Servicer shall take all such actions as may be
necessary to preserve the lien of the related Security Instrument upon the
related Mortgaged Property.

      11.1.2. Tax Returns and Other Reports. Unless otherwise instructed by
notice from the Master Servicer, the Servicer shall forward to each Mortgagor
such forms and furnish such information within the control of the Servicer as
are required by the Code to be furnished to them and shall prepare and file
annual reports required by the state authorities. By way of example, the
Servicer shall provide the Mortgagors with the reports required under Code
Sections 6050H (e.g., reporting on Form 1098 any mortgage interest, including
points, received and any reimbursements of qualified mortgage interest) and
6050J (Abandonments and Foreclosure of Real Property, Form 1099-A).

      11.1.3. Servicer Internal Controls. The Servicer shall maintain at all
times an adequate system of audit and internal controls in accordance with
Prudent Servicing Practices.

      11.1.4. Pool Insurance Compliance. Notwithstanding any other provision
of this Agreement, the Servicer shall at all times comply with all applicable
Pool Insurance policy requirements so as to assure the full benefit of such
Pool Insurance policy to the Trustee.

      11.1.5. Primary Mortgage Insurance Compliance. Notwithstanding any
other provision of this Agreement, the Servicer shall at all times comply
with all applicable Primary Mortgage Insurance policy requirements so as to
assure the full benefit of such Primary Mortgage Insurance policy to the
Trustee.

      11.1.6. Letter of Credit Compliance. Notwithstanding any other
provision of this Agreement, the Servicer shall comply with all the
requirements of any Letter of Credit so as to assure the full benefit of such
Letter of Credit to the Trustee.

   Section 11.2 Delegation of Duties

      11.2.1. Permissible Delegations. Without the written consent of the
Master Servicer authorizing further delegations, the only servicing duties
which the Servicer may elect to delegate, by agency, subcontract or
otherwise, and the only categories of such delegees, are as follows:

      (a) professional collection agencies to perform those duties and
   functions for the collection of delinquent amounts due on any Mortgage
   Loan that are customarily performed by such agencies in the locality where
   the related Mortgaged Property are located;

      (b) title insurance companies, escrow companies and trust companies to
   issue or provide reports reflecting the condition of title to any
   Mortgaged Property and services incidental to the foreclosure or
   acquisition in lieu of foreclosure of any Mortgaged Property, or the sale
   or disposition of any Mortgaged Property acquired by the Servicer;

      (c) attorneys licensed to practice in the state where the related
   Mortgaged Property is located to perform customary legal services in
   connection with the foreclosure or acquisition of such Mortgaged Property
   or the sale or disposition of such Mortgaged Property acquired by the
   Servicer at or in lieu of foreclosure, or for the collection of delinquent
   sums owed on any Mortgage Loan;

      (d) professional property inspection companies and appraisers to
   conduct routine inspections of, and provide written inspection reports on,
   any Mortgaged Property as required by this Agreement;

      (e) title companies, escrow companies and real estate tax service
   companies to provide periodic reports as to the amount of real estate
   taxes due on any Mortgaged Property and the due date or dates of each
   required installment;

      (f) credit bureaus or credit reporting companies to provide credit
   reports on Borrowers or persons who have applied to assume any Mortgage
   Loans;

      (g) construction companies, contractors and laborers to provide labor,
   materials and supplies necessary to protect, preserve and repair any
   Mortgaged Property as required by this Agreement;

      (h) lock box providers or payment processing administrators to provide
   payment processing services;

      (i) hazard insurance servicing companies to provide periodic reports as
   to the amount of hazard insurance premiums due on any Mortgaged Property
   and the Due Date or Due Dates of each required premium payment; and

      (j) such other third party service providers as the Servicer, in
   accordance with Prudent Servicing Practices, may deem appropriate.

      11.2.2. Delegee's Qualifications. The Servicer shall assure that each
Person retained to provide any of the services set forth in Section 11.2.1
hereof is fully licensed and holds all required Federal, State or local
governmental franchises, certificates and permits necessary to conduct the
business in which he is engaged and that such Person is reputable,
knowledgeable, skilled and experienced and has the necessary personnel,
facilities and equipment required to provide the services for which he is
retained.

      11.2.3. Responsibility for Costs. Any Person retained in accordance
with Section 11.2.1 hereof shall be retained solely for the Servicer's
account and at the Servicer's sole expense and shall not be deemed to be an
agent or representative of the Trustee, its successors or assigns, or the
Master Servicer or its successors or assigns.

      11.2.4. Servicer's Liability. The Servicer shall remain liable to the
Master Servicer for the performance of the Servicer's duties and obligations
under this Agreement, notwithstanding the delegation of any servicing
function pursuant to this Section 11.2.

   Section 11.3 Due-on-Sale Clause Enforcement

      11.3.1. Enforcement Requirement. The Servicer is required to enforce
the Due-on-Sale Clause on any Mortgage Loan to the extent permitted by
applicable law upon the transfer of title of the related Mortgaged Property
unless (a) a Mortgage Loan is assumable pursuant to the terms of the related
Mortgage Note Assumption Rider, or (b) enforcement of the Due-on-Sale Clause
will jeopardize the Primary Mortgage Insurance coverage on such Mortgage Loan.

      11.3.2. [Reserved].

      11.3.3. Approval Requirement. In all circumstances of an unapproved
transfer of a Mortgaged Property initiated by the Borrower, the Servicer is
required to promptly notify, where applicable, the respective Primary
Mortgage Insurer and/or the respective Pool Insurer, of such transfer and
obtain written approval before initiating enforcement proceedings.

      11.3.4. Exempt Transactions. (a) The Servicer shall not be required to
enforce the due-on-sale (or transfer) provision of this Agreement for certain
types of property transfers or related transactions. The Servicer shall
process these exempt transactions without the approval or notification of the
Master Servicer. In each case, the Mortgaged Property shall remain subject to
the lien of the related Mortgage Loan, and each transferee or grantee
described below shall take subject to such lien. The following transactions
shall be deemed to be exempt transactions and shall require the review and
approval of the Servicer only prior to transfer:

      (i)       a transfer of the Mortgaged Property to the surviving party on
            the death of a joint tenant or a tenant by the entirety;

      (ii)      a transfer of the Mortgaged Property to a junior lienholder as
            the result of a foreclosure or the acceptance of a deed in lieu of
            foreclosure for the subordinate mortgage;

      (iii)     a transfer of the Mortgaged Property (or, if the Borrower is an
            inter vivos revocable trust, a transfer of a beneficial interest in
            such trust) to a relative of a deceased Borrower (or, in the case of
            an inter vivos revocable trust Borrower, to a relative of the
            individual who established the trust), provided that the transferee
            will occupy the Mortgaged Property;

      (iv)      a transfer of the Mortgaged Property (or, if the Borrower is an
            inter vivos revocable trust, a transfer of a beneficial interest in
            such trust) to the spouse, child(ren), parent(s), brother(s), or
            sister(s), grandparent(s), or grandchild(ren) of the Borrower (or,
            in the case of an inter vivos revocable trust Borrower, of the
            individual who established the trust), provided that the transferee
            will occupy the Mortgaged Property;

      (v)       a transfer of the Mortgaged Property (or, if the Borrower is an
            inter vivos revocable trust, a transfer of a beneficial interest in
            such trust) to a spouse of the Borrower (or, in the case of an inter
            vivos revocable trust Borrower, of the individual who established
            the trust) under a divorce decree or legal separation agreement or
            from an incidental property settlement agreement, provided that the
            transferee will occupy the Mortgaged Property;

      (vi)      a transfer of a Mortgaged Property that is jointly owned by
            unrelated co-borrowers from one of the Borrowers to the other,
            provided that the Borrower who is gaining full ownership of the
            Mortgaged Property shall continue to occupy it and the transfer
            occurs after at least 12 months have elapsed since the Mortgage Loan
            was closed;

      (vii)     a transfer of the Mortgaged Property (or, if the Borrower is an
            inter vivos revocable trust, a transfer of a beneficial interest in
            such trust) into an inter vivos revocable trust (or, if the Borrower
            is an inter vivos revocable trust, into a new trust), so long as the
            Borrower (or the individual who established the original inter vivos
            revocable trust) will be the beneficiary of the trust and the
            occupant of the Mortgaged Property;

      (viii)    the granting of a leasehold interest in the Mortgaged Property
            that has a term of three or fewer years and does not provide an
            option to purchase the Mortgaged Property, or a renewal option that
            would allow the term to extend beyond three years;

      (ix)      the creation of a subordinate lien upon the Mortgaged Property,
            provided that there is no transfer of occupancy rights therein; or

      (x)       the creation of a purchase money security interest for household
            appliances which are situated in or upon the Mortgaged Property.

      (b) If the individual or entity transferring the Mortgaged Property
   requests a release of liability, the Servicer must review the credit and
   financial capacity of the individual or entity receiving the Mortgaged
   Property. The Servicer may approve the release of liability if it believes
   the recipient is capable of assuming the mortgage obligations and, where
   applicable, with the consent of the respective Primary Mortgage Insurer
   and/or the respective Pool Insurer. If the Servicer does not believe that
   the recipient is credit worthy or if the consent of the respective Primary
   Mortgage Insurer and/or the respective Pool Insurer is required but not
   obtained, the Servicer shall deny the request for the release of
   liability, although the transfer may still be processed without the
   release. If the request is denied based solely on the Primary Mortgage
   Insurer's or the respective Pool Insurer's decision, the denial letter
   should state that fact.

      (c) The Servicer shall advise (i) each insurance company providing
   Hazard Insurance and Flood Insurance, where applicable, (ii) the relevant
   tax authorities, where applicable, (iii) the respective Primary Mortgage
   Insurer and/or the respective Pool Insurer and (iv) other interested
   parties when it processes transactions under this Section 11.3.4. The
   Master Servicer does not need to be notified about such a transaction
   unless the Servicer agrees to a release of liability under Section
   11.3.4(b).

   Section 11.4 Assumptions

      11.4.1. Assumption Requirements. Any Assumption permitted under this
Agreement shall be performed in accordance with Prudent Servicing Practices.
In connection with an Assumption of an assumable Mortgage Loan, the Servicer
shall process such Assumption as provided for in the Mortgage Note or the
Mortgage Note Assumption Rider and shall verify that:

      (a) no material term of the Mortgage Note (including, but not limited
   to, the Mortgage Interest Rate, the remaining term to maturity, the Gross
   Margin, the Index, the Maximum Lifetime Mortgage Interest Rate, the
   Minimum Lifetime Mortgage Interest Rate, and any Periodic Rate Cap or any
   Periodic Payment Cap) may be changed in connection with such Assumption;

      (b) that the new Borrower qualifies for credit under the Master
   Servicer's criteria and standards for similar loans;

      (c) where applicable, the respective Primary Mortgage Insurer, and/or
   the respective Pool Insurer has in advance approved in writing such
   Assumption of such Mortgage Loan by the new Borrower and such Mortgage
   Loan will continue to be insured by such Primary Mortgage Insurer and/or
   such Pool Insurer;

      (d) the documents relating to such Assumption (i) create a valid and
   enforceable promise to pay the Unpaid Principal Balance of the related
   Mortgage Loan, together with interest thereon in accordance with the
   related Mortgage Note by the new Borrower and (ii) the related Security
   Instrument continues to evidence a valid and perfected first lien on the
   related Mortgaged Property; and

      (e) such Mortgage Loan will continue to be a valid first priority
   security interest upon the related Mortgaged Property.

      11.4.2. Approval and Release. In connection with an Assumption of an
assumable Mortgage Loan and in accordance with the provisions of the related
Mortgage Loan Documents, upon such verification, (a) the Servicer may approve
such Assumption and (b) only with the prior written approval of, where
applicable, the Primary Mortgage Insurer and/or the Pool Insurer, unless such
approval is precluded by the terms of the Mortgage Loan Documents, release
the previous Borrower from liability.

      11.4.3. Assumption Agreement Provided to Custodian. The Servicer shall
provide to the Custodian the original assumption agreement.

      11.4.4. Assumption Fees. Subject to applicable law or regulation and
the provisions of the related Mortgage Note, the Servicer may charge the
Borrower and retain a reasonable and customary assumption fee. Such fee is
receivable only from the Borrower directly and may not be withdrawn from any
of the custodial accounts maintained hereunder.

      11.4.5. Disclosure Requirement. In connection with an Assumption of an
assumable Mortgage Loan, the Servicer shall make all disclosures required by
applicable law.

   Section 11.5 Partial Releases and Easements

      11.5.1. Prerequisites. The Servicer must take the following actions
prior to permitting the grant of a partial release of a Mortgaged Property
from the lien of the related Security Instrument, easement, consent to
substantial alterations and any other changes affecting the related Mortgage
Loan or such Mortgaged Property:

      (a) where applicable, obtain the respective Primary Mortgage Insurer's
   and/or the respective Pool Insurer's prior written approval;

      (b) if the value of the released property is more than five thousand
   ($5,000) dollars, obtain an acceptable Appraisal Report showing the
   current market value of such Mortgaged Property before and after the
   release and showing individually both the value of the land and of the
   improvements thereon;

      (c) ensure that any and all cash consideration received at least equals
   the current market value of property or rights to be released regarding
   such Mortgaged Property;

      (d) ensure that any and all cash consideration received is applied to
   the Unpaid Principal Balance of such Mortgage Loan to the extent of the
   diminution of the value of such Mortgaged Property;

      (e) cause all legal documents for the transaction to be reviewed;

      (f) ensure that such Mortgaged Property, following such release or
   change, adequately secures the Unpaid Principal Balance of the Mortgage
   Loan and accrued interest thereon and that the related Loan-to-Value ratio
   will not be greater than 80%, after giving effect to clause (d) hereof; and

      (g) obtain written notification from the respective Title Insurer that
   the related Title Insurance policy remains fully in effect with respect to
   such Mortgaged Property, as modified, following such release or change.

      11.5.2. Release or Modification of Lien. With the consent, where
applicable, of the respective Primary Mortgage Insurer, and/or the respective
Pool Insurer, the Servicer may approve applications for partial release of a
Mortgaged Property from the lien of the related Security Instrument,
easements, consent to substantial alterations and any other changes affecting
the related Mortgage Loan or such Mortgaged Property if the perquisites in
Section 11.5.1 have been satisfied.

      11.5.3. Master Servicer's Approval. If the Servicer is not able to meet
the prerequisites specified in Section 11.5.1 or if the amount of
consideration received is less than the reduction in the value of the
Mortgaged Property due to the partial release or other changes, the Servicer
must obtain the approval of the Master Servicer prior to permitting an
application described in Section 11.5.2. The Servicer shall furnish such
information as the Master Servicer shall request in connection with an
application under this Section 11.5.3.

   Section 11.6 Recordation of Assignments

      11.6.1. Recordation Requirement. The Servicer must, at its own expense,
record the Assignment of each Security Instrument (other than with respect to
any Mortgage Loan registered in the name of MERS) to the Trustee or, if
applicable, to the Trust Administrator on behalf of the Trustee, as well as
any previously unrecorded intervening Assignments. In the case of any
Mortgage Loan registered in the name of MERS, the Servicer shall take all
actions as are necessary to cause the Trustee or, if applicable, to the Trust
Administrator on behalf of the Trustee, to be shown as the owner of the
related Mortgage Loan on the records of MERS for purposes of the system of
recording transfers of beneficial ownership of mortgages maintained by MERS.
If any Security Instrument or Assignment is not recorded within the later to
occur of (i) the date 120 days after the acquisition of the a Mortgage Loan
by the Trustee or, if applicable, the Trust Administrator on behalf of the
Trustee, if the Servicer has been servicing such Mortgage Loan from the
Trustee's or, if applicable, the Trust Administrator's date of acquisition or
(ii) the date 120 days after the date the Servicer began servicing such
Mortgage Loan, the Master Servicer shall have the right to so effect such
recordation at the Servicer's expense.

      11.6.2. Extension of Recording Period. The time to record an Assignment
of a Security Instrument may be extended from the end of permissible
recordation period set forth in Section 11.6.1 if the Servicer provides an
Officer's Certificate acceptable to the Master Servicer certifying that the
Servicer has used its best efforts to complete the recordation process for
the Security Instrument and/or Assignment, as applicable, and that the
factors preventing completion of the recordation process are beyond the
Servicer's control.

      11.6.3. Delivery Requirement. Promptly following the recordation of any
Security Instrument or an Assignment, the Servicer shall deliver to the
Custodian, unless otherwise directed in writing by the Master Servicer, such
Security Instrument or Assignment bearing evidence of recordation or, if the
original Security Instrument or Assignment is retained by the recording
office, a certified copy of the original recorded Security Instrument or
Assignment.

      11.6.4. Waiver of Recordation. The Master Servicer shall generally
require the Servicer to record an Assignment of the Security Instrument for
each Mortgage Loan to the Trustee or, if applicable, to the Trust
Administrator on behalf of the Trustee. However, the recordation requirement
with respect to an Assignment may be waived for a Mortgage Loan if (a) the
related Mortgaged Property is in a state in which recordation of such an
Assignment is not required to protect the Trustee's right, title and interest
in and to the related Mortgage Loan and the Depositor or the Servicer has
delivered to the Master Servicer an Opinion of Counsel, acceptable to the
Master Servicer, to that effect or (b) the Master Servicer has been advised
by the Depositor that the nonrecordation of an Assignment in a state will not
result in a reduction of the rating assigned by each Rating Agency at the
time of the initial issuance of the Wells Fargo Asset Securities Corporation,
Mortgage Pass-Through Certificates, Series 2007-AR8.

   Section 11.7 General Servicing Considerations

      11.7.1. Abandonment. If the Servicer discovers that any Mortgaged
Property is not occupied, the Servicer must immediately attempt to contact
the Borrower in order to determine the reason for the vacancy. If the
Servicer determines that such Mortgaged Property has been abandoned, the
Servicer, at its own expense, must take all necessary actions to protect such
Mortgaged Property from waste, damage and vandalism. Such expenses shall be
recoverable by the Servicer solely from the Liquidation Proceeds of the
related Mortgage Loan, if any, or directly from the Borrower.

      11.7.2. Buydown Funds. The Servicer must distribute any Buydown Funds
in each Custodial Buydown Account in accordance with the terms of the
applicable Buydown Agreement.

      11.7.3. Maintenance of Records. Based upon information obtained
pursuant to its obligations under Section 12.2.6, the Servicer shall maintain
accurate records of the occurrence of any of the following:

      (a) deterioration of, waste of, or lack of repair to, any Mortgaged
   Property, which materially and adversely affects the Value of such
   Mortgaged Property and the Borrower refuses or is not financially able to
   make the necessary repairs;

      (b) sale or transfer of any Mortgaged Property in a manner not approved
   by the Servicer pursuant to the provisions of this Agreement;

      (c) material litigation involving any Mortgaged Property;

      (d) abandonment of any Mortgaged Property;

      (e) a material default, determined in accordance with Prudent Servicing
   Practices, under the terms of any Security Instrument, Mortgage Note,
   Condominium Project or PUD constituent document or similar obligations of
   a Borrower; or

      (f) any other situation that may materially and adversely affect the
   value of any Mortgage Loan.

      11.7.4. Eminent Domain. The Servicer must submit appropriate
recommendations and documentation to, where applicable, the respective
Primary Mortgage Insurer and/or the respective Pool Insurer, of any taking by
eminent domain if:

      (a) the Mortgaged Property will be taken in whole and the consideration
   to be paid to the Borrower will be insufficient to satisfy the Unpaid
   Principal Balance (plus any unreimbursed Advances) of the related Mortgage
   Loan, or

      (b) the Mortgaged Property will be taken in part and (i) the ratio of
   the (A) Unpaid Principal Balance (plus any unreimbursed Advances) of the
   Mortgage Loan to (B) the Current Value of the remaining Mortgaged Property
   is higher than (ii) the LTV ratio of the Mortgage Loan immediately before
   the taking, even after applying any consideration to the Unpaid Principal
   Balance of the Mortgage Loan.

      The Servicer must take all steps necessary to prevent loss of any
      Primary Mortgage Insurance or Pool Insurance benefits due to any taking
      by eminent domain.

      11.7.5. Late Charges. Late charges may not be assessed unless a
Borrower failed to make payments in accordance with the Mortgage Note.

   Section 11.8 Borrower Bankruptcy

      11.8.1. Servicer's Duty. The Servicer shall be responsible for
representing the interests of the Trustee in any bankruptcy proceedings
involving a Borrower.

      11.8.2. Responsibility for Costs. The costs of protecting the interests
of the Trustee shall be advanced by the Servicer and are not (a) chargeable
to the related Borrower's Escrow Funds or (b) reimbursable from the Master
Servicer.

      11.8.3. Challenge Bankruptcy Reductions. If the bankruptcy judge or
trustee should propose to (a) reduce the Unpaid Principal Balance of a
Mortgage Note, (b) reduce the related Mortgage Interest Rate, (c) extend the
final maturity of such Mortgage Note, or (d) reduce the level of any monthly
payment on such Mortgage Note, the Servicer shall (i) challenge any such
modification on a timely basis and (ii) exercise reasonable judgment to
protect the interests of the Trustee.

      11.8.4. Bankruptcy Adjustments. If the action of any court results in a
Deficient Valuation or Debt Service Reduction, the Servicer shall provide a
calculation of the effects of such modification notifying the Master Servicer
of the new principal balance, Mortgage Interest Rate, new final maturity, or
monthly payment level, as the case may be, of such Mortgage Loan.

      11.8.5. Bankruptcy Plan Surveillance. With respect to each Mortgage
Loan which is the subject of a Deficient Valuation or a Debt Service
Reduction, the Servicer shall verify that payments are being made in
accordance with the plan approved in the related bankruptcy proceedings.

                                   ARTICLE 12

                             Delinquency Management

   Section 12.1 In General

      12.1.1. Servicing Practices. The provisions set forth in this Article
constitute the minimum guidelines and procedures for servicing Delinquent
Mortgage Loans. The Servicer must use collection procedures which meet or
exceed these guidelines. The Servicer's procedures must be sufficient for
promptly dealing with delinquencies. The Master Servicer retains the right to
require the Servicer to perform additional collection procedures which the
Master Servicer deems, in its reasonable discretion, necessary to realize the
objectives set forth herein or otherwise to protect the interests of the
Trustee.

      12.1.2. Servicer's Capabilities. The Servicer's collection staff must
be sufficiently skilled in financial counseling and mortgage servicing
techniques to assist a Borrower to bring his Mortgage Loan current and to
protect his equity and credit rating, while at the same time protecting the
interests of the Trustee and of the Master Servicer.

      12.1.3. Servicing Objectives. The purpose of any collection effort is
to cure a Delinquency in the shortest possible time. The Servicer should
treat each Delinquency individually. Discussions with the Borrower must cover
the cause of such Delinquency and the time frame in which such Delinquency
shall be cured. The Servicer should use notices, letters, telegrams,
telephone calls, face-to-face contact and other responsible collection
techniques consistent with Prudent Servicing Practices. The Servicer is
required to maintain all collection records. The Servicer must vary its
collection techniques to fit individual circumstances, avoiding a fixed
collection pattern which may be ineffective in dealing with particular
Borrowers. The Servicer should recognize the importance of telephone and
face-to-face contact in any collection program. As part of its collection
procedures, the Servicer shall closely monitor all newly originated Mortgage
Loans.

      12.1.4. Servicer's Expenses. Unless otherwise specified, the cost of
any of the servicing procedures detailed in this Agreement shall be borne
solely by the Servicer. The Servicer may not charge such expenses against the
Borrower's Escrow Funds. The foregoing shall not preclude the Servicer from
recovering such expenses from the Borrower to the extent permitted by
applicable law and the related Mortgage Loan Documents.

   Section 12.2 Delinquency Servicing Procedures

      12.2.1. Late Notice. A late notice shall be mailed by the Servicer to
the Borrower by the 18th day of such Delinquency.

      12.2.2. Telephonic Inquiry. The Servicer shall use best efforts to make
telephone contact with the Borrower by the 22nd day of such Delinquency.

      12.2.3. Notice of Default. Notification of default of such Mortgage
Loan shall be mailed by the Servicer to the Borrower by the 35th day of such
Delinquency.

      12.2.4. Borrower Interview. The Servicer shall comply with applicable
FNMA and FHLMC requirements with regard to Borrower interviews.

      12.2.5. Continuing Contacts. If satisfactory arrangements have not been
made to cure such Delinquency by the 90th day, the Servicer must continue to
contact the Borrower until either the related Mortgage Loan has been brought
current or the Servicer has made the decision to commence foreclosure of such
Mortgaged Property or other action.

      12.2.6. Property Inspection. The Servicer is required to inspect each
Delinquent Mortgaged Property at such time and in such manner as is in
accordance with Prudent Servicing Practices. The Servicer must prepare a
Property Inspection Report following each inspection. All Property Inspection
Reports must be retained by the Servicer and copies thereof must be forwarded
to the Master Servicer promptly upon request. All expenses related to the
foregoing shall be recoverable by the Servicer from the Principal or from
Liquidation Proceeds, Insurance Proceeds, payments on the related Mortgage
Loan or any other source relating to the related Mortgage Loan or the related
Mortgaged Property. The foregoing shall not preclude the Servicer from
recovering such expenses from the Borrower to the extent permitted by
applicable law and the related Mortgage Loan Documents.

   Section 12.3 Relief of Borrowers

      12.3.1. Servicer's Role. The Servicer shall be readily available to
Borrowers to offer skilled financial counsel and advice and shall make
personal contact with delinquent Borrowers as often as possible to achieve a
solution that will bring the Mortgage Loan current as soon as possible. The
Servicer shall be fully familiar with the form of relief to Borrowers
provided for herein and shall employ such relief.

      12.3.2. Servicer's Discretion. The Servicer shall have reasonable
discretion to extend appropriate relief to Borrowers who encounter hardship
and who are cooperative and demonstrate proper regard for their obligations.
However, no such relief shall be granted to any Borrower under a Mortgage
Loan unless the Servicer reasonably believes that there is a reasonable
expectation that such Borrower shall bring his Mortgage Loan current within a
period conforming to acceptable servicing practices; provided that such
period will not exceed 21 months from the Due Date of the earliest unpaid
installment and will not result in a "significant modification" of the
Mortgage Loan under the REMIC Provisions.

      12.3.3. Relief Requirement. Prior to granting relief with respect to a
delinquent Mortgage Loan as herein provided, the Servicer shall ascertain
that (i) the reasons for the default and (ii) the attitude and circumstances
of such Borrower justify the relief to be granted.

      12.3.4. Primary Mortgage Insurance Considerations. Where applicable,
the Servicer shall satisfy all requirements under the applicable Primary
Mortgage Insurance policy regarding the relief granted with respect to a
delinquent Mortgage Loan.

      12.3.5. Responsibility for Costs. The Servicer is responsible for
collection from such Borrower of any recording or similar costs or expenses
incidental to the granting of relief with respect to a delinquent Mortgage
Loan.

      12.3.6. Forbearance Plan. (a) Where relief is appropriate, the Servicer
shall arrange with a Borrower a "Forbearance Plan" giving such Borrower a
definite period in which to reinstate his Mortgage Loan by immediately
commencing payments in excess of the regular Monthly Payments. Without the
prior written consent of the Master Servicer, special forbearance relief
agreements reducing or suspending the regular Monthly Payment of the related
Mortgage Loan for a specified period of time are not permitted. To the extent
that (i) the priority of the lien represented by such Mortgage Loan remains
in effect and is not adversely affected, (ii) where applicable, the related
Primary Mortgage Insurance policy remains in full force and effect and (iii)
where applicable, the related Pool Insurance policy remains in full force and
effect, the Servicer, in its discretion, may enter into a Forbearance Plan
that provides that the total amount owed during such Delinquency, including
costs and expenses, will be repaid within the shortest period practicable,
commencing immediately. With respect to such Mortgage Loan, the Forbearance
Plan shall provide that such Delinquency will be cured within a period
conforming to acceptable servicing practices; provided that such period will
not exceed 21 months from the Due Date of the earliest unpaid installment and
will not result in a "significant modification" of the Mortgage Loan under
the REMIC Provisions. The Forbearance Plan for such Mortgage Loan shall be
set forth in writing and executed by the Borrower and by the Servicer in the
form of a letter agreement if the earliest unpaid installment is more than 60
days past due.

      (b) The Servicer may modify the payment terms of Mortgage Loans that
   are in default, or as to which default is reasonably foreseeable; provided
   that no such modification shall reduce the Unpaid Principal Balance of
   such Mortgage Loan or permanently reduce the Mortgage Interest Rate of
   such Mortgage Loan or extend the final maturity date with respect to any
   Mortgage Loan beyond the Final Scheduled Maturity Date for the Certificates,
   or if the Mortgage Loans are divided into two or more Loan Groups, the Final
   Scheduled Maturity Date for the Certificates in the related Group; and
   provided further that prior to entering into any such modification the
   Servicer and the Master Servicer shall determine that such modification is
   likely to increase the proceeds of such Mortgage Loan over the amount
   expected to be collected pursuant to a foreclosure or other similar
   procedure. Nothing in this Section 12.3.6(b) shall be construed to limit the
   ability of the Servicer to arrange for the sale of a Mortgaged Property
   pursuant to Section 13.3.3. The Servicer shall be responsible for the
   determination that any extension of the maturity date of a Mortgage Loan
   complies with this Section 12.3.6(b).

      12.3.7. Accommodation Limitations. No modification, recast, extension,
or capitalization of delinquent payments of a Mortgage Loan other than as
provided in Section 12.3.6 hereof shall be permitted with respect to a
Mortgage Loan.

      12.3.8. Pool Insurance Considerations. Where applicable, the Servicer
shall satisfy all requirements under the applicable Pool Insurance policy
regarding the relief granted with respect to a delinquent Mortgage Loan,
including, without limitation, securing the prior written consent of the
respective Pool Insurer regarding (a) any change in any term of such Mortgage
Loan, (b) the release of the related Borrower from any liability related to
such Mortgage Loan, or (c) the release of any portion of, or interest in, the
Mortgaged Property from the lien of the related Security Instrument.

   Section 12.4 Special Delinquency Servicing Considerations

      12.4.1. Advance Responsibility During Delinquency. In the event of a
Delinquency with respect to a Mortgage Loan, the Servicer agrees to advance
from its own funds the full amount of Monthly Payments (which may be net of
the related Servicing Fee) for such Mortgage Loan. These advances shall
provide the Trustee with a regular flow of funds on such delinquent Mortgage
Loan. The advance obligation stated above is in addition to any other advance
obligations which the Servicer has pursuant to the provisions of this
Agreement. The Servicer must still advance funds in accordance with the
provisions of this Agreement even if a forbearance has been granted.

      12.4.2. Primary Mortgage Insurance Compliance. Where applicable, the
Servicer shall be familiar with and shall satisfy all requirements of the
applicable Primary Mortgage Insurance policy with respect to a delinquent
Borrower. The Servicer shall have adequate controls to assure timely filing
of all notices to the appropriate Primary Mortgage Insurer. The Servicer
shall prepare and file all appropriate claims with respect to the applicable
Primary Mortgage Insurance policy and the Servicer shall prepare and, upon
request, deliver to the Master Servicer, copies of all claims forms and other
papers received from or presented to any Primary Mortgage Insurer in
connection with any claims presented under any such policy.

      12.4.3. Pool Insurance Compliance. Where applicable, the Servicer shall
be familiar with and shall satisfy all requirements of the applicable Pool
Insurance policy with respect to a delinquent Borrower. The Servicer shall
have adequate controls to assure timely filing of all notices to the
appropriate Pool Insurer. Copies of all such notices shall be sent to the
Master Servicer upon request. The Servicer shall prepare and file all
appropriate claims with respect to the applicable Pool Insurance policy and
the Servicer shall prepare and, upon request, deliver to the Master Servicer,
copies of all claims forms and other papers received from or presented to any
Pool Insurer in connection with any claims presented under any such policy.

                                   ARTICLE 13

                           Foreclosure Administration

   Section 13.1 Foreclosure Prerequisites

      13.1.1. Foreclosure/Alternative to Foreclosure Initiation. (a) When a
Borrower reaches the 90th day of Delinquency and the Servicer has exhausted
all reasonable means of curing the Delinquency, the Servicer shall either
begin the foreclosure process or suggest an alternative to foreclosure in
accordance with Prudent Servicing Practices. In conjunction with the
Servicer's decision to begin the foreclosure action or seek an alternative to
foreclosure, the Servicer shall provide written notice to, where applicable,
the respective Primary Mortgage Insurer and/or the respective Pool Insurer no
later than ten days after the initiation of foreclosure proceedings or the
alternative to foreclosure. Notwithstanding anything to the contrary in this
Section 13.1.1, the Master Servicer may direct the Servicer to stop the
foreclosure action or to modify any alternative to foreclosure. The Servicer
shall prepare all necessary documentation to initiate the foreclosure
proceedings.

      (b) Notwithstanding anything to the contrary in this Section 13.1, if
   the Master Servicer has entered into a special servicing agreement
   pursuant to Section 3.08 of the Pooling and Servicing Agreement, the
   Master Servicer may direct the Servicer to commence foreclosure
   proceedings as contemplated by such special servicing agreement.

      13.1.2. Foreclosure Expenses. All fees and expenses shall be consistent
with FNMA standards and, where applicable, shall not exceed those permitted
under the respective Pool Insurance policy and/or the respective Primary
Mortgage Insurance policy. Fees in excess of the amount permitted by FNMA
guidelines or extraordinary legal services must be approved in writing in
advance, where applicable, by the respective Primary Mortgage Insurer or the
respective Pool Insurer, as the case may be, if required by the applicable
policy. All attorneys' fees, and other costs in excess of FNMA's standards in
respect of any foreclosure or acquisition in lieu of foreclosure shall be
identified in advance and a detailed estimate of the amounts thereof shall be
set forth in the Servicer's written recommendation. The billing by a
foreclosure attorney must demonstrate the appropriateness of any
extraordinary fees by the services required. In cases of full or partial
reinstatement of the related Mortgage Loan, the fees shall be reasonable and
in proportion to the authorized fee for services rendered for a completed
foreclosure. Unless otherwise expressly agreed in writing, neither the Master
Servicer, any of its Affiliates, their respective officers, directors,
employees, agents, successors or assigns, the Trustee nor, if applicable, the
Trust Administrator shall be liable for any attorneys' fees, trustees' fees,
witness fees, title search fees, court costs or other expenses incurred by
the Servicer in respect of any foreclosure or acquisition in lieu of
foreclosure, except to the extent that such fees, costs and expenses are
fully reimbursable under a Primary Mortgage Insurance policy and in fact are
reimbursed.

      13.1.3. Hazardous Wastes. In the event that the Mortgaged Property,
related to a Mortgage Loan which is being considered for liquidation by
foreclosure or the transfer of a deed-in-lieu of foreclosure, contains, and
the Servicer has reason to believe that it contains, hazardous or regulated
substances which may impose liability, for damages, remediation or otherwise,
upon the owner of such Mortgaged Property pursuant to Federal, State or local
law, the Servicer shall not, except with the express prior written approval
of the Master Servicer, which approval makes specific reference to the
presence of such hazardous or regulated substances, undertake or continue the
process of foreclosure with respect to such Mortgaged Property.

   Section 13.2 Deed-in-Lieu of Foreclosure

      13.2.1. Conditions. If the Master Servicer and the respective Primary
Mortgage Insurer and/or the respective Pool Insurer, if applicable, have
approved the liquidation of a Mortgage Loan by accepting a deed-in-lieu of
foreclosure of the related Mortgaged Property, the Servicer may accept such
deed without any further action or approval by the Master Servicer or, where
applicable, the respective Primary Mortgage Insurer and/or the respective
Pool Insurer, provided that:

      (a) the Servicer determines that the pursuit of a deficiency judgment
   is not practical or warranted;

      (b) the Mortgaged Property has been listed for sale at a market value
   for three months or more without a reasonable sales offer;

      (c) there reasonably appear to be legal impediments to pursuing
   foreclosure;

      (d) the acceptance of the deed-in-lieu of foreclosure will enable the
   Trustee to acquire the Mortgaged Property earlier than under a foreclosure
   action;

      (e) the Borrower acknowledges in writing that the deed is being
   accepted as an accommodation to him or her;

      (f) where applicable, the respective Primary Mortgage Insurer and/or
   the respective Pool Insurer has agreed to the acceptance of a deed-in-lieu;

      (g) the Borrower has not received cash consideration to deed the
   Mortgaged Property over to the Trustee, unless the Master Servicer
   otherwise approves;

      (h) the Borrower can convey acceptable marketable title, evidenced by a
   Title Insurance policy;

      (i) the Mortgaged Property is vacant (unless, where applicable, the
   respective Primary Mortgage Insurer and/or the respective Pool Insurer has
   agreed to accept an occupied property);

      (j) the Mortgaged Property is not subject to liens (held by others),
   judgments, or attachments; and

      (k) the Borrower agrees to assign and transfer to the benefit of the
   Trustee, where applicable, any rents if the Mortgaged Property is rented,
   and the Servicer agrees to collect any rental income.

      13.2.2. Subsequent Actions. Upon acquisition by the Trustee, the
Servicer shall promptly notify, if applicable, the respective Primary
Mortgage Insurer and/or the respective Pool Insurer, indicating the details
of the transaction and reasons for the conveyance and providing such other
information as is required under a Primary Inspection Report to, if
applicable, the Primary Mortgage Insurer and/or the Pool Insurer. Title shall
be conveyed directly from the Borrower to the Trustee or to such other Person
designated by the Master Servicer.

   Section 13.3 Actions Prior to Foreclosure

      13.3.1. Notice Requirements. The Servicer shall send the Borrower a
letter, not less than 30 days before the commencement of foreclosure
proceedings, setting out (i) the nature of the default, (ii) the steps that
must be taken by the Borrower to cure the default and (iii) the date when
foreclosure proceedings will begin. If the Servicer has reason to believe
that the related Mortgaged Property has been abandoned or if the Borrower has
displayed an obvious disregard for his obligations under such Mortgage Loan,
the foregoing notice shall be forwarded at the earliest possible date
following the Borrower's default.

      13.3.2. Initiation of Proceedings. If foreclosure approval has not been
withheld by the Master Servicer and, where applicable, by the respective
Primary Mortgage Insurer and/or the respective Pool Insurer, with respect to
a Mortgaged Property, including Co-op Shares, the Servicer shall, unless it
arranges for the sale by the Borrower of the Mortgaged Property to a third
party pursuant to Section 13.3.3, initiate or cause to be initiated such
foreclosure actions as are authorized by law and consistent with practices in
the locality where the Mortgaged Property is located, including, in the case
where such Mortgaged Property includes a residential long-term lease, the
succession by the Servicer to the rights of the Borrower under the lease by
foreclosure, assignment in lieu of foreclosure or other comparable means. If
such Mortgaged Property has been abandoned or vacated by the Borrower and the
Borrower has evidenced no intention of honoring his obligations under the
related Mortgage Loan, the foreclosure process shall be expedited to the
fullest extent permitted by law.

      13.3.3. Short Sale of Defaulted Mortgage Loans in Lieu of Foreclosure.
With respect to any defaulted Mortgage Loan for which the Servicer would
otherwise be required to initiate foreclosure proceedings, the Servicer may
arrange for the sale of the Mortgaged Property by the Borrower to a third
party if, in the good faith judgment of the Servicer, the net proceeds from
such sale would be equal to or greater than the net proceeds of a bid
conducted in accordance with Section 13.4.2.

   Section 13.4 Foreclosure Procedures

      13.4.1. Foreclosure Expenses. During the period in which the Mortgaged
Property related to a Mortgage Loan is being foreclosed, remaining Escrow
Funds, if any, as well as any rent receipts, shall be used to pay all taxes
and insurance premiums that become due with respect to such Mortgaged
Property to the extent permitted by law. Except where other arrangements have
been made with the applicable Primary Mortgage Insurer, the Servicer shall,
with respect to each Mortgaged Property undergoing foreclosure, advance
payment of attorneys' fees, trustees' fees and other foreclosure costs from
the commencement of foreclosure proceedings pertaining to such Mortgaged
Property.

      13.4.2. Bidding Instructions.. The Servicer shall issue bidding
instructions to the attorney or trustee in a foreclosure proceeding in
accordance with Prudent Servicing Practices. Where applicable, the Servicer
shall incorporate any bidding requirements issued by the respective Primary
Mortgage Insurer and/or the respective Pool Insurer. Any proceeds received
from an insurance loss settlement shall be included as part of the bid
amount. Where a claim or claim settlement under a Hazard Insurance or Flood
Insurance policy is pending, the Servicer shall contact the Hazard Insurance
or Flood Insurance carrier to verify that the proposed bid will not
invalidate the claim, in that, in certain jurisdictions, a bid for the total
indebtedness will be considered as satisfaction of the debt and would thus
bar the Hazard Insurance or Flood Insurance claim.

      13.4.3. Buydown Funds Use. Unless the related Buydown Agreement
provides otherwise, the Servicer may not use Buydown Funds relating to a
Mortgage Loan to cure a Delinquency with respect to such Mortgage Loan. Any
Buydown Funds remaining in the associated Custodial Buydown Account of a
Mortgage Loan in foreclosure must be disposed of in accordance with the terms
of the related Buydown Agreement.

      13.4.4. Servicer's Responsibilities. Subject to the provisions of
Article Three hereof, after acquisition of a Mortgaged Property, through
foreclosure or a deed-in-lieu of foreclosure, or after the Servicer shall
have taken possession of the Mortgaged Property, whichever occurs first, the
Servicer shall be responsible for the management of such Mortgaged Property.
The Servicer shall remain responsible until possession has been assumed by
the applicable Primary Mortgage Insurer or the applicable Pool Insurer or
until such Mortgaged Property are otherwise disposed of, as the case may be.
The Servicer shall take such action as is necessary to protect the Trustee's
security or, after acquisition thereof, ownership interest in such Mortgaged
Property. Such action shall include, without limitation, (i) management of
such Mortgaged Property, (ii) maintenance of such Mortgaged Property and
(iii) if such Mortgaged Property are vacant, protection of such Mortgaged
Property against vandals and the elements.

      13.4.5. Conveyance Documents. Where applicable, any conveyance by the
Servicer to the respective Primary Mortgage Insurer or the respective Pool
Insurer of a Mortgaged Property shall be made by the form of deed commonly
used in the particular jurisdiction where such Mortgaged Property is located.
The Servicer shall prepare the necessary documents within two weeks after the
date of sale at foreclosure or confirmation of sale, if applicable, or within
a reasonable time frame. The documents shall be forwarded to the Trustee for
approval and execution. After execution by the Trustee, such documents will
be returned to the Servicer for delivery to the respective Primary Mortgage
Insurer or the respective Pool Insurer which is acquiring such Mortgaged
Property.

   Section 13.5 Mortgage Loan Reinstatement

      13.5.1. Borrower's Full Payment. If a Borrower offers to fully
reinstate his Mortgage Loan during the foreclosure process, the Servicer
shall accept the offer. To achieve full reinstatement of his Mortgage Loan, a
Borrower shall make payment of all (i) payments due to bring such Mortgage
Loan current, (ii) attorneys' fees, (iii) trustees' fees, (iv) any additional
legal costs, (v) all applicable late fees and (vi) any other expenditures or
Advances made by the Servicer during the foreclosure process.

      13.5.2. Borrower's Partial Payment. Except where otherwise required by
applicable law, the Servicer may not accept an amount in payment from a
Borrower which is less than the amount required for full reinstatement
pursuant to Section 13.5.1 hereof toward reinstatement of a Mortgage Loan
during the foreclosure process without the prior written approval from, if
applicable, the respective Primary Mortgage Insurer and/or the respective
Pool Insurer.

      13.5.3. Obligations upon Reinstatement. Upon accepting the
reinstatement of a Mortgage Loan, the Servicer shall immediately contact the
appropriate foreclosure attorney or trustee to avoid incurring additional
legal costs or fees. The Servicer must apply the reinstatement Funds upon
receipt from a Borrower in payment of the expenses enumerated in Section
13.5.1 hereof. Upon receipt of the reinstatement funds from a Borrower the
Servicer must return to the Custodian the related Mortgage Note and other
related Mortgage Loan Documents for reinclusion in the related Mortgage Loan
File.

      13.5.4. Certain Assumptions Permitted. The Servicer is authorized,
notwithstanding the other provisions of this Article 13, to permit the
assumption of a defaulted Mortgage Loan rather than to foreclose or accept a
deed-in-lieu of foreclosure if, in the Servicer's judgment, the default is
unlikely to be cured and the assuming borrower meets the underwriting
guidelines that originally applied to such Mortgage Loan.

                                   ARTICLE 14

                               REO Administration

   Section 14.1 General Provisions

      14.1.1. REO Action Plan. With regard to each REO which is acquired, the
Servicer shall prepare a plan of action within 30 Business Days after the
date on which the Trustee acquires marketable title to such REO. Each plan of
action shall set forth (i) a recommendation for the most effective manner to
dispose of the REO, based on a current appraisal report, a broker's price
opinion and a market analysis; (ii) the steps to be taken by the Servicer to
secure such REO; and (iii) an estimate of the amount of time that is required
to dispose of such REO. The Servicer shall promptly submit copies of each
plan of action to the Master Servicer and, where applicable, to the
respective Primary Mortgage Insurer, and/or the respective Pool Insurer. The
Servicer shall implement each plan of action in an expeditious manner. The
Servicer shall maintain monthly progress reports with regard to each plan of
action detailing the status of the related REO and the progress achieved in
implementing the plan of action.

   Section 14.2 REO Servicing

      14.2.1. REO Servicing Requirements. The Servicer shall service each REO
from its acquisition through its disposition and shall ensure that all funds
received with respect to such REO are deposited to the appropriate Custodial
P&I Account for remittance to the Trustee, unless the Master Servicer has
relieved the Servicer of these responsibilities by written notification.

      14.2.2. Servicer's Responsibilities. In addition to any other
obligations set forth herein, upon acquisition of each REO, the Servicer
shall be responsible for:

      (a) managing, maintaining, securing and, where applicable, renting such
   REO until it is conveyed or sold;

      (b) inspecting such REO at least once every 30 days and promptly
   sending the Master Servicer an updated Property Inspection Report upon
   request;

      (c) paying all taxes, insurance, maintenance, management and
   foreclosure costs relating to such REO;

      (d) submitting recommendations for listing and soliciting offers on
   such REO;

      (e) marketing such REO;

      (f) completing the sale of such REO;

      (g) depositing sales proceeds relating to such REO into the appropriate
   Custodial P&I Account for remittance to the Trustee;

      (h) where applicable, satisfying all of the Primary Mortgage Insurer's
   procedural requirements and filing all required forms and claims;

      (i) where applicable, depositing Primary Mortgage Insurance or Pool
   Insurance proceeds relating to such REO into the applicable Custodial P&I
   Account for remittance to the Trustee; and

      (j) processing the conveyance of such REO to the Primary Mortgage
   Insurer, where applicable.

      14.2.3. [Reserved].

   Section 14.3 REO Records and Reports

      14.3.1. Records Retention. The Servicer shall retain in its files
copies of all documents, reports and invoices described in this Section.

      14.3.2. Evidence of Title. Evidence that title to a REO is held by the
Trustee shall be submitted by the Servicer to the Master Servicer and, if
applicable, to the Primary Mortgage Insurer and/or the Pool Insurer, within
ten Business Days after marketable title to such REO has been acquired.

      14.3.3. REO Expenses. At the request of the Master Servicer, Primary
Mortgage Insurer and/or the Pool Insurer, the Servicer shall send a report
listing all expenses in administering each REO. The Servicer shall retain
such invoices in its records and shall, by request, (i) produce any such
invoices for inspection or (ii) at its own expense, provide copies of any
such invoices to the Master Servicer and, if applicable, to the Primary
Mortgage Insurer and/or the Pool Insurer, as directed. The foregoing expense
invoices shall include, without limitation, the following:

      (a) insurance premiums;

      (b) real estate tax bills;

      (c) special assessments;

      (d) owners' association dues; and

      (e) utility bills.

      14.3.4. REO Documents. Upon request, the Servicer shall send copies to
the Master Servicer and, where applicable, to the respective Primary Mortgage
Insurer and/or the respective Pool Insurer, of the following documents
relating to each REO:

      (a) any forced placed Hazard Insurance policy or Flood Insurance
   policy, if applicable;

      (b) any maintenance contracts;

      (c) any contractor bids relating to the rehabilitation of such REO
   pursuant to Section 14.5.3 hereof;

      (d) an updated Title Insurance policy which reflects the occurrence of
   foreclosure; and

      (e) plat map or house location survey, if already available.

   Section 14.4 REO Marketing

      14.4.1. REO Marketing Efforts. The Servicer shall begin efforts to
market a REO as soon as marketable title is acquired by the Trustee.

      14.4.2. REO Sales. (a) The Servicer shall obtain the best market price
for a REO for the Trustee while disposing of such REO in a timely and
efficient manner. The Servicer, acting on behalf of the Trustee, shall
dispose or cooperate with the Trustee in disposing of such REO prior to the
close of the third calendar year following the year of its acquisition by the
Trustee (the "REO Disposition Period") or, if an extension has been obtained
from the Internal Revenue Service pursuant to Section 14.4.2(b), within such
period. If the Servicer is otherwise unable to sell such REO, the Servicer
shall before the end of the REO Disposition Period or, if an extension has
been obtained from the Internal Revenue Service pursuant to Section
14.4.2(b), before the end of such period, following the acquisition of such
REO, auction such REO to the highest bidder in an auction reasonably designed
to bring a fair price. The Servicer is eligible to bid in such an auction.

      (b) The Servicer may apply to the Internal Revenue Service, in the
   manner contemplated by Code Section 856(e)(3), for an extension of the REO
   Disposition Period with respect to an REO.

      14.4.3. Primary Mortgage Insurance Considerations. The Servicer must
ensure that any action taken with respect to the sale of a REO does not
jeopardize the maximum benefits available under the related Primary Mortgage
Insurance Policy, if any, with respect to the related Mortgage Loan. The
Servicer must inform the related Primary Mortgage Insurer of any listing
agreements or purchase offers that are received before the related Primary
Mortgage Insurer has finalized the disposition of the claim.

      14.4.4. Master Servicer Instructions. Where the Servicer receives
instructions from the Master Servicer regarding the marketing and sale of a
REO, either with respect to a specific property or generally, such
instructions shall govern the Servicer's actions, notwithstanding any
provision herein.

      14.4.5. Pool Insurance Considerations. The Servicer must ensure that
any action taken with respect to the sale of a REO does not jeopardize the
maximum benefits available under the related Pool Insurance Policy, if any,
with respect to the related Mortgage Loan. The Servicer must inform the
related Pool Insurer of any listing agreements or purchase offers that are
received before the Primary Mortgage Insurer has finalized the disposition of
the claim.

   Section 14.5 REO Rehabilitation

      14.5.1. REO Rehabilitation Requirement. Unless the Master Servicer
shall otherwise direct, and subject to Section 3.2.2(ii) and Section 17.6.2,
the Servicer must ensure that any rehabilitation work (which shall not
include the cleaning of a recently acquired REO property) to any REO which is
necessary to restore such REO to a marketable condition is performed and that
such work is performed in a professional and workmanlike manner.

      14.5.2. [Reserved].

      14.5.3. Written Contractor Bids. The Servicer shall solicit detailed
written bids from independent contractors when the value of a contract for
rehabilitation of a REO exceeds five hundred dollars ($500.00) (which shall
not include the cleaning of a recently acquired REO property). Where the
value of a contract exceeds five thousand dollars ($5,000.00) (which shall
not include the cleaning of a recently acquired REO property), the Servicer
shall receive bids from a minimum of two independent and unrelated
contractors and, upon request, forward copies of such bids to the Master
Servicer. Where the value of a contract exceeds fifty thousand dollars
($50,000.00) (which shall not include the cleaning of a recently acquired REO
property), the Servicer shall receive bids from a minimum of three
independent and unrelated contractors and, upon request, forward copies of
such bids to the Master Servicer.

      14.5.4. Primary Mortgage Insurance Considerations. If a Mortgaged
Property which has become a REO and the related Mortgage Loan is covered by a
policy of Primary Mortgage Insurance, the Servicer shall notify the related
Primary Mortgage Insurer of such rehabilitation plans before the completion
of the Primary Mortgage Insurance claim to ensure reimbursement from the
Primary Mortgage Insurer. If the related Primary Mortgage Insurer elects not
to reimburse all rehabilitation expenses, work should be postponed until
after final disposition of the Primary Mortgage Insurance claim.

   Section 14.6 REO Administration Failure.

      14.6.1. Servicer Removal. The Master Servicer may in its reasonable
discretion, in the event that the Servicer's actions or omissions result in
damage to any REO or a failure to sell any REO property within a reasonable
time, the Master Servicer may remove the servicing of such REO from the
Servicer and assume responsibility for management, control, maintenance,
security, rehabilitation and disposition of such REO.

      14.6.2. Servicer's Continuing Obligations. In the event that the
Servicer is removed from servicing a REO by virtue of the provisions of
Section 14.6.1, the Servicer, as to such REO, shall nevertheless remain
responsible to (a) pay when due all insurance premiums, property taxes and
assessments; (b) file when due all claims for Primary Mortgage Insurance,
Pool Insurance, Hazard Insurance and, if applicable, Flood Insurance
benefits; and (c) fulfill any other related responsibilities required by the
Master Servicer.

      14.6.3. Servicer's Duty to Compensate. Whether or not a Servicer is
removed from servicing with respect to a particular REO, the Servicer must
compensate the Master Servicer for any damages caused as a result of the
Servicer's breach of its obligation to service efficiently each REO. The
Servicer acknowledges that any damages suffered as a result of the Servicer's
inefficiency in managing a REO may not be quantified in advance of the Master
Servicer assuming responsibility for such REO.

                                   ARTICLE 15

                         Insurance and Letter of Credit

   Section 15.1 General Provisions

      15.1.1. Insurance Requirements.

      The Servicer must verify that each Mortgage Loan has the insurance
coverage required pursuant to Article 15 and 16. All claims arising under
Insurance Policies maintained hereunder must be settled or otherwise disposed
of by the Servicer, and all such Insurance Policies must be maintained,
including, without limitation, the payment of premiums on a timely basis, by
the Servicer at no expense to the Trustee, the Trust Administrator (if
applicable) or the Master Servicer.

      If the Insurance Proceeds paid in respect of any Mortgage Loan are not
used to repair the related Mortgaged Property due to the particular
circumstances of the loss, and instead such Insurance Proceeds are applied to
reduce the Unpaid Principal Balance of such Mortgage Loan and such
application causes the Unpaid Principal Balance of such Mortgage Loan to
reduce to zero, the Servicer must treat the application of such proceeds as a
Liquidation, and notify the Master Servicer of such Liquidation.

      15.1.2. Uninsured Losses. The Servicer must take the following actions
in the event of loss or damage to any Mortgaged Property caused by an
earthquake, flood, tornado or other natural disaster immediately following,
the earlier to occur of (x) its notification or discovery of such loss or
damage or (y) the time at which the Servicer reasonably should have known of
such loss or damage in the exercise of Prudent Servicing Practices:

      (a) determine the extent of the losses or damages;

      (b) secure any abandoned Mortgaged Property from vandalism and the
   elements;

      (c) communicate with and counsel the respective Borrower on any
   disaster relief programs or other assistance which is available; and

      (d) take appropriate action to protect the interests of the Trustee and
   the respective Borrower.

      15.1.3. Servicer's Obligation to Maintain Insurance. If the Servicer
discovers that a Borrower does not have adequate insurance coverage as
required pursuant to the provisions of this Article, the Servicer must obtain
and maintain at its own expense the required insurance coverage on the
related Mortgaged Property. The Servicer may, in its discretion, cause the
required coverage to be maintained through a blanket insurance policy. Such
expenses shall not be recoverable by the Servicer from the Master Servicer or
from payments on the Mortgage Loan or any other source relating to the
related Mortgage Loan or the related Mortgaged Property, other than from
Liquidation Proceeds or Insurance Proceeds from the related Mortgage Loan. To
the extent permitted by applicable law and the related Mortgage Loan
Documents, the Servicer may initiate forced placed coverage with respect to
such Mortgaged Property and thereafter attempt to recover such expenses from
the related Borrower.

      15.1.4. Insurance Notices. The Servicer must arrange for all insurance
drafts, notices, policies, invoices, or other correspondence to be delivered
directly to the Servicer. The Servicer, its successors and assigns must be
named as the Mortgagee, the endorsement must show the Servicer's address as
shown in the following example:

      Wells Fargo Bank, N.A.
      7001 Westown Parkway
      West Des Moines, Iowa 50266

      15.1.5. Default by Insurer. If the Servicer knows or has reasonable
cause to suspect that an insurer under any applicable insurance policy
required pursuant to the provisions of this Article will, for any reason, be
unable to pay a valid claim, the Servicer shall immediately (i) find a
substitute insurer and (ii) pay any premiums to the insurer. In any case, the
Servicer shall not be liable in any way for the financial inability of any
insurer under any insurance policy required herein to pay a valid claim so
long as the provisions of Article 15 and 16 hereof are complied with.

      15.1.6. Insurance Carrier Rating. Each Insurance Policy must be
underwritten by an insurance carrier that is a FNMA or FHLMC approved
Mortgage Insurer.

      15.1.7. Insurance Carrier Licenses. Each insurance carrier must be
licensed or otherwise authorized by law to conduct business in each state in
which a related Mortgaged Property is located.

      15.1.8. Risk Exposure. If any Mortgaged Property is exposed to hazards
not fully covered by Hazard Insurance or Flood Insurance, the Servicer must
notify the Master Servicer immediately with a recommendation for additional
coverage.

      15.1.9. Evidence of Insurance. (a) The Servicer must maintain the
following documentation with respect to insurance coverage on each Mortgage
Loan:

      (i)   if Primary Mortgage Insurance is required, a copy of the Primary
            Mortgage Insurance policy and any related endorsements;

      (ii)  for one- to four-unit dwellings where such coverage is not provided
            under a blanket policy maintained by the Servicer, an original of
            the Hazard Insurance policy, if applicable, and any related
            endorsements;

      (iii) a copy of the Title Insurance policy and any related endorsements,
            unless a Final Title Condition Report was obtained;

      (iv)  For properties covered under a blanket policy, an original of any
            blanket policy, and any related endorsements; and

      (v)   an original of any Flood Insurance policy, if Flood Insurance is
            required, and any related endorsements.

      (b) A certificate of insurance is acceptable in lieu of any of the
   foregoing policies if it contains the following information:

      (i)   named insured and Mortgagee or, for PUD or Condominium Units, named
            insured association, unit owner and unit owner Mortgagee;

      (ii)  address of the Mortgaged Property;

      (iii) type, amount and effective dates of coverage;

      (iv)  deductible amount;

      (v)   any endorsement or optional coverage obtained and made part of the
            original policy;

      (vi)  insurer's agreement to provide at least ten day's prior written
            notice to the Servicer and Borrower (or applicable unit owner
            Mortgagee if for a PUD or Condominium Unit) before any reduction in
            coverage or cancellation of the policy; and

      (vii) signature of an authorized representative of the insurer, if
            required by applicable law.

   Section 15.2 Primary Mortgage Insurance

      15.2.1. Primary Mortgage Insurance Requirement. Unless Primary Mortgage
Insurance coverage with respect to a Mortgage Loan is canceled as provided in
Section 15.2.4 herein, the Servicer must maintain at all times Primary
Mortgage Insurance on any Mortgage Loan with an original LTV ratio in excess
of 80%.

      15.2.2. Primary Mortgage Insurance Coverage. As to each Mortgage Loan
which is required to have Primary Mortgage Insurance, pursuant to this
Agreement or the related Mortgage Loan Documents, Primary Mortgage Insurance
must at least provide coverage which insures against loss of that portion of
the Unpaid Principal Balance of the Mortgage Loan that exceeds 75% of the
Value of the Mortgaged Property. If the Mortgage Loan provides for negative
amortization or for the potential of negative amortization, the Primary
Mortgage Insurance policy must also insure any increase in the Unpaid
Principal Balance from the original principal balance of the related Mortgage
Note.

      15.2.3. Primary Mortgage Insurer Downgrading. In the event that the
rating assigned by a Rating Agency to the claims paying ability of any
Primary Mortgage Insurer is reduced below the level permitted under Section
15.1.6, the Servicer shall use its best efforts to replace each Primary
Mortgage Insurance Policy issued by such Primary Mortgage Insurer with a new
Primary Mortgage Insurance policy issued by an insurer whose claims paying
ability is acceptable to the Master Servicer. The premium for any replacement
Primary Mortgage Insurance policy shall not exceed the premium for the
discontinued Primary Mortgage Insurance policy.

      15.2.4. Primary Mortgage Insurance Cancellation. If a Borrower requests
cancellation of the Primary Mortgage Insurance policy with respect to his
Mortgaged Property, the following requirements must be met:

      (a) The current LTV ratio must be 80% or less. The current LTV ratio
   must be calculated by dividing the Unpaid Principal Balance of the related
   Mortgage Loan by the Current Value of the Mortgaged Property;

      (b) The related Mortgage Loan may not have been 30 days or more
   delinquent within the preceding twelve months; and

      (c) There may not have been any other default under the terms of the
   related Mortgage Loan at any time during the preceding twelve months.

   If there are indications that the Current Value of the Mortgaged Property has
   declined, the Servicer shall obtain an Appraisal Report with respect to such
   Mortgaged Property that is not more than 60 days old. The Current Value of
   such Mortgaged Property set forth the Appraisal Report shall be used as the
   divisor in clause (a) hereof to determine whether the recalculated current
   LTV is 80% or less. If the recalculated current LTV is greater, the Primary
   Mortgage Insurance cancellation request will be denied.

      15.2.5. Primary Mortgage Insurance Claims. The Servicer must take all
steps to ensure the payment of the maximum benefits payable under the terms
of any Primary Mortgage Insurance policy. The Servicer must work diligently
with each Primary Mortgage Insurer to determine whether such insurer will
settle the claim by taking title to the Mortgaged Property in question or in
some other manner. Upon receipt of any Primary Mortgage Insurance proceeds,
the Servicer must deposit such amounts in the appropriate Custodial P&I
Account. The Servicer shall promptly notify the Master Servicer in writing if
any Primary Mortgage Insurer at any time denies any or all of a claim filed
under its Primary Mortgage Insurance policy.

   Section 15.3 Hazard Insurance

      15.3.1. Hazard Insurance Requirement. Unless alternative coverage is
provided pursuant to Section 16.3 hereunder, the Servicer must ensure that
each Mortgaged Property is covered at all times by Hazard Insurance.

      15.3.2. Hazard Insurance Coverage. As to each Mortgaged Property, the
amount of Hazard Insurance must be at least equal to the lesser of (a) the
Unpaid Principal Balance of the related Mortgage Loan or (b) 100% of the
insurable value of the improvements on the Mortgaged Property; provided,
however, that in no case shall the amount of Hazard Insurance be less than
the amount required to fully compensate for any damage to the improvements on
the Mortgaged Property on a replacement cost basis.

      15.3.3. Hazard Insurance Deductible. Except as a greater amount may be
required by an applicable law, each Hazard Insurance deductible may not
exceed FNMA or FHLMC's required deductible.

      15.3.4. Hazard Insurance Vacancy Coverage. The Servicer must ensure
that each Mortgaged Property is adequately covered even when vacant and,
where available, must obtain a vacancy permit endorsement.

      15.3.5. Hazard Insurance Mortgagee Provisions. Each Hazard Insurance
Policy must contain or have attached a standard mortgagee clause in the form
customarily used by or required by private institutional mortgage loan
investors. Such clause must provide that the Hazard Insurance carrier shall
notify the named Mortgagee at least ten days before any reduction in coverage
or cancellation of the policy. All mortgagee clauses must be properly
endorsed, necessary notices of transfer must be given and any other action
must be taken that is necessary in order to protect the interests of the
Trustee, its successors and/or assigns. The standard mortgagee clause should
read as follows: "Insuring Wells Fargo Bank, N.A., as agent for HSBC Bank
USA, National Association, its successors and/or assigns."

   Section 15.4 Flood Insurance

      15.4.1. Flood Insurance Requirement. Unless alternate coverage is
provided pursuant to Section 16.6 hereunder, the Servicer must ensure that
Flood Insurance is maintained at all times on Mortgaged Property that are in
a special flood hazard area identified by the Secretary of HUD or the
Director of the Federal Emergency Management Agency.

      15.4.2. Flood Insurance Coverage. As to each Mortgaged Property, the
amount of Flood Insurance must be at least equal to the lesser of (a) the
maximum amount available under the National Flood Insurance Program's regular
program or its emergency program, (b) the Unpaid Principal Balance of the
related Mortgage Loan or (c) 100% of the replacement cost of the improvements
on the Mortgaged Property.

      15.4.3. Flood Insurance Deductible. Except as a greater amount may be
required by applicable law, each Flood Insurance deductible may not exceed
the lesser of (a) $1,000 or (b) one percent of the applicable amount of
coverage.

   Section 15.5 Title Insurance

      15.5.1. Servicer's Obligations. The Servicer shall perform and comply
with all requirements and conditions of each Title Insurance policy for each
Mortgage Loan and the related Mortgaged Property that are to be performed or
observed by the "Insured" or obligee thereunder as a condition to maintaining
and keeping it in force, or making a claim under, such Title Insurance
policy. The Servicer shall be named as a payee on all Title Insurance policy
loss drafts, and upon receipt thereof, the funds shall be credited to the
extent of the sum of (i) the Unpaid Principal Balance of such Mortgage Loan
and any interest accrued thereon, (ii) any outstanding advances thereon (iii)
any outstanding Advances relating to such Mortgage Loans and (iv) any
expenses owed by such Borrower which are due the Trustee, the Master Servicer
or the Servicer, whether for its own account or others, to the appropriate
Custodial P&I Account and the balance of such funds, if any, shall be
credited to the appropriate Custodial T&I Account.

      15.5.2. Policy Custody. [Reserved]

      15.5.3. Title Insurance Claims. The Master Servicer must be notified
contemporaneously with the making of any claim under the Title Insurance
policy.

   Section 15.6 Insurance Loss Settlements

      15.6.1. Settlement Approval. The approval of the Master Servicer need
not be requested for disposition of insurance loss settlements and the
Servicer may disburse the loss proceeds as provided herein.

      15.6.2. Settlement Disbursements. For each Mortgage Loan, including a
Mortgage Loan secured by Mortgaged Property located in a Condominium Project
or PUD, the Servicer is fully responsible for the disbursement of insurance
loss settlements under each Hazard Insurance policy and each Flood Insurance
policy where property damage is $10,000 or more, including but not limited to:

      (a) arranging for and authorizing the restoration and rehabilitation of
   the related damaged Mortgaged Property in cooperation with the Borrower;

      (b) subject to applicable law, applying the Insurance Proceeds to
   reduction of the Unpaid Principal Balance of such Mortgage Loan, provided
   that the Servicer (i) shall have determined that such proceeds are
   insufficient to repair and restore the related Mortgaged Property, or that
   the repair and restoration of such Mortgaged Property is not feasible; and
   (ii) shall have obtained authorization of the Master Servicer to make such
   application of the Insurance Proceeds;

      (c) collecting, endorsing and disbursing the Insurance Proceeds and
   arranging for progress inspections and payments, if necessary;

      (d) complying with all requirements of any Primary Mortgage Insurance
   policy pertaining to the filing of claims and the settlement of insurance
   losses to assure that the security of such Mortgage Loan is not impaired
   and that the coverage of such Primary Mortgage Insurance policy is not
   jeopardized or otherwise adversely affected;

      (e) assuring, through the receipt of Borrower's affidavits, repair
   contract copies, lien waivers and the like, that the priority of the lien
   of the Security Instrument is preserved, and that the Insurance Proceeds
   are applied to the restoration or repair of the related Mortgaged Property
   if not applied in payment of such Mortgage Loan;

      (f) obtain releases or waivers of liens and taking such other actions
   as are necessary to avoid the filing of laborers', materialmen's or
   mechanic's liens against the related Mortgaged Property; and

      (g) maintaining procedures and practices acceptable to the Master
   Servicer and in conformity with Prudent Servicing Practices for the
   control and disposition of insurance loss drafts.

      15.6.3. Settlement Funds. The Servicer shall be named as a payee on all
insurance loss drafts and upon receipt thereof, the funds shall be credited
to the Borrower's Insurance Proceeds balance and deposited into (a) where
such funds will be applied to the repair and restoration of the related
Mortgaged Property and where required by applicable state law, one or more
separate escrow accounts, so that the balance on deposit in such accounts is
fully insured at all times by the FDIC through either the BIF or SAIF or (b)
where such funds will not be applied to the repair and restoration of the
related Mortgaged Property, the respective Custodial P&I Account.

      15.6.4. Settlement Notice. Upon written request received from the
Master Servicer, the Servicer shall provide any report relating to such
settlement to the Master Servicer on a Hazard Insurance Loss Draft
Notification, together with a summary of the disposition of the proceeds.

      15.6.5. Continuing Coverage. If a letter of assurance is obtained from
any insurer under a Hazard Insurance policy or a Flood Insurance policy that
the insurance coverage shall continue in full force and effect, the Servicer
shall deposit such letter in the appropriate Servicer Mortgage Loan File.

      15.6.6. Property Inspections. The Servicer shall conduct property
inspections in accordance with the milestones of the repair and
rehabilitation plan for such Mortgaged Property and prepare Property
Inspection Reports on any Mortgaged Property involving property damage over
$15,000. The Servicer shall furnish a copy of the repair and rehabilitation
plan for such Mortgaged Property to the Master Servicer upon request.

   Section 15.7 Letters of Credit

      15.7.1. Letter of Credit Draws. The Servicer shall take all steps
necessary to make draws under any Letter of Credit in accordance with the
provisions thereof. The Servicer shall notify the Master Servicer promptly in
writing if the Pledge Holder does not renew a Letter of Credit. Upon receipt
of any amounts as a result of a draw on a Letter of Credit because of the
nonrenewal of such Letter of Credit, the Servicer shall deposit such amounts
in the appropriate Custodial P&I Account and such amount shall be treated as
a prepayment of principal. Upon receipt of any amounts as a result of a draw
on a Letter of Credit for a reason other than the nonrenewal of such Letter
of Credit, the Servicer shall deposit such amounts in the appropriate
Custodial P&I Account for application in accordance with the provisions of
the applicable Administration Disclosure.

            15.7.2. Draws in the Event of Servicer Termination.
Notwithstanding anything to the contrary in this Agreement (including without
limitation the termination or transfer of the servicing rights and/or
obligations of the Servicer pursuant to Article 19 hereof), Wells Fargo Bank,
as beneficiary under the Non-Assigned Letters of Credit, shall continue to
make draws thereunder in accordance with the provisions thereof. Under this
provision, in the event a Pledged Asset Mortgage Loan is ninety days
delinquent, the Servicer shall deliver a copy of the related Letter of Credit
to Wells Fargo Bank and shall notify both the Master Servicer and Wells Fargo
Bank that the Pledged Asset Mortgage Loan is ninety days delinquent. Any
funds received from draws on the Non-Assigned Letters of Credit after Wells
Fargo Bank is no longer the Servicer hereunder shall be remitted by Wells
Fargo Bank to the Servicer for deposit into the related Custodial P&I
Account. Under this provision, in the event a Pledged Asset Mortgage Loan is
liquidated or paid in full the Master Servicer shall notify Wells Fargo Bank
in writing.

                                   ARTICLE 16

                          Condominium and PUD Insurance

   Section 16.1 General Provisions

      16.1.1. Applicability. The provisions of this Article pertain solely to
Mortgage Loans secured by Condominium Units or PUD Units.

      16.1.2. Premiums. The premiums for insurance policies required pursuant
to this Article must be paid as a common expense by the Owners' Association.

      16.1.3. Deductible Reserves. Funds for each of the deductibles
associated with the insurance policies required pursuant to this Article must
be included in the Owners' Association's reserves and must be so designated.

      16.1.4. Name of Insured. The name of the insured stated under each
Insurance Policy required pursuant to the provisions of this Article must be
similar in form and substance to the following:

      "Association of Owners of the [Name of Condominium Project or PUD] for use
      and benefit of the individual Condominium or PUD Unit owners" (designated
      by name, if required).

      16.1.5. Mortgagee Clause. Each insurance policy required pursuant to
the provisions of this Article must contain the standard mortgagee clause
endorsed to provide that any disbursements shall be paid to the Owners'
Association for the use and benefit of Mortgagees as their interests may
appear, or otherwise endorsed to fully protect the interest of (a) the
Trustee and (b) the holders of a beneficial interest therein, if any.

      16.1.6. Reconstruction Coverage. If, with respect to a PUD or
Condominium Project in which a Mortgaged Property is located, there is a
construction code provision that would require changes to undamaged portions
of the PUD or Condominium Project's building(s) even when only part of a
building is destroyed by an insured hazard, then the Servicer must ensure
that each insurance policy required by this Article contains the necessary
construction code endorsements to cover this exposure.

   Section 16.2 Common Area Multiple Peril Insurance

      16.2.1. Common Area Multiple Peril Insurance Requirement. The Servicer
must ensure that the Owner's Association maintains, with respect to the PUD
or Condominium Project in which a Mortgaged Property is located, a policy of
Common Area Multiple Peril Insurance, with premiums being paid as a common
expense. The Common Area Multiple Peril Insurance policy must at least
protect against loss or damage by fire and all other hazards that are
normally covered by the standard extended coverage endorsement, and all of
the perils customarily covered for similar types of projects, including those
covered by the standard "all risk" endorsement.

      16.2.2. Common Area Multiple Peril Insurance Coverage. As to each
Condominium Project or PUD in which a Mortgaged Property is located, a Common
Area Multiple Peril Insurance policy must cover 100% of the current
replacement cost of all of the common areas (other than the land and
foundation), common elements including fixtures and building service
equipment, as well as common personal property and supplies.

      16.2.3. Common Area Multiple Peril Insurance Deductible. Except as a
greater amount may be required by applicable law, each Common Area Multiple
Peril Insurance deductible may not exceed the lesser of (a) $10,000 or (b)
one percent of the applicable amount of coverage.

      16.2.4. Boiler and Machinery Coverage. If a steam boiler is operating
within the Condominium Project or PUD in which a Mortgaged Property is
located, then the Servicer must ensure that boiler and machinery coverage is
in force at all times. This coverage must be evidenced by the standard form
of boiler and machinery endorsement. The minimum liability coverage per
accident under boiler and machinery coverage must equal the insurable value
of the boiler and equipment and the building housing such boiler or
machinery, based upon current replacement cost, or $2 million, whichever is
less.

   Section 16.3 Blanket Hazard Insurance

      16.3.1. Blanket Hazard Insurance Requirement. Unless alternative
coverage is provided pursuant to Section 16.3 hereunder, the Servicer must
verify that each such Mortgaged Property is covered at all times by Hazard
Insurance policy which provides blanket coverage for the individual units in
the Condominium Project or PUD.

      16.3.2. Blanket Hazard Insurance Coverage. As to each Condominium
Project or PUD which contains a Mortgaged Property for which its Hazard
Insurance coverage is provided through a blanket policy, the amount of Hazard
Insurance for a blanket policy a Condominium Project or PUD must be at least
equal to the lesser of (a) the aggregate of the outstanding principal
balances of all mortgage notes secured by units within the Condominium
Project or PUD (including the Mortgage Notes secured by Mortgaged Properties)
or (b) 100% of the replacement cost of the improvements on the Condominium
Project or PUD Unit site.

      16.3.3. Blanket Hazard Insurance Deductible. Except as a greater amount
may be required by an applicable law, each Hazard Insurance deductible for a
blanket policy covering a Condominium Project or PUD may not exceed the
lesser of (a) $10,000 or (b) one percent of the applicable amount of coverage.

   Section 16.4 Common Area Comprehensive General Liability (CGL) Insurance

      16.4.1. Common Area CGL Insurance Requirement. The Servicer must ensure
that the Owners' Association maintains a Comprehensive General Liability
Insurance policy covering all of the common areas, common elements,
commercial spaces and public ways in the Condominium Project or PUD in which
a Mortgaged Property is located.

      16.4.2. Common Area CGL Insurance Coverage. As to each Condominium
Project or PUD in which a Mortgaged Property is located, a CGL Insurance
policy should provide coverage of at least $1,000,000 for personal injury,
bodily injury or property damage for any single occurrence. Each CGL
Insurance policy must contain a severability of interest endorsement
preventing the insurer from denying the claim of a Condominium or PUD Unit
owner because of negligent acts of the Owners' Association or other unit
owners. Each CGL Insurance policy must include all other types of coverage
and endorsements in the types and amounts required by private institutional
mortgage loan investors for developments similar in construction, location
and use.

   Section 16.5 Owners' Association Fidelity Insurance

      16.5.1. Owners' Association Fidelity Insurance Requirement. The
Servicer must ensure that the Owners' Association maintains a fidelity bond
or insurance against dishonest and fraudulent acts on the part of directors,
managers, trustees, employees or volunteers responsible for handling funds
belonging to or administered by the association.

      16.5.2. Owners' Association Fidelity Insurance Coverage. The Owners'
Association fidelity bond or insurance must name the Owners' Association as
the insured and must be written in an amount sufficient to provide protection
at least 150% of the insured's estimated annual operating expenses and
reserves. An appropriate endorsement to the policy to cover any persons who
serve without remuneration must be added if the policy would not otherwise
cover volunteers. Owners' Association fidelity insurance coverage must be in
an amount equal to at least 3 months assessments on all units in the
Condominium Project or PUD. Owners' Association fidelity insurance coverage
is not required if the Condominium Project or the PUD have fewer than 20
units.

   Section 16.6 Blanket Flood Insurance

      16.6.1. Blanket Flood Insurance Requirement. Where a Mortgaged Property
is a Condominium Unit or PUD Unit and is not individually covered by a Flood
Insurance policy in accordance with the provisions of Section 15.4 hereof,
the Servicer must verify that a Flood Insurance policy which provides blanket
coverage for the individual units in the Condominium Project or PUD, is
maintained at all times on Mortgaged Property that are in a special flood
hazard area identified by the Secretary of HUD or the Director of the Federal
Emergency Management Agency.

      16.6.2. Blanket Flood Insurance Coverage. As to each Condominium
Project or PUD which contains a Mortgaged Property for which its Flood Hazard
Insurance coverage is provided through a blanket policy, the amount of Flood
Insurance must be at least equal to the lesser of (a) the maximum amount
available under the National Flood Insurance Program's regular program or the
its emergency program, (b) the aggregate of the outstanding principal
balances of all mortgage notes secured by units within the Condominium
Project or PUD (including the Mortgage Notes secured by Mortgaged
Properties), or (c) 100% of the replacement cost of the improvements on the
Condominium Project or PUD Unit site.

      16.6.3. Blanket Flood Insurance Deductible. Except as a greater amount
may be required by applicable law, each Flood Insurance deductible for a
blanket policy covering a Condominium Project or PUD may not exceed the
lesser of (a) $5,000 or (b) one percent of the applicable amount of coverage.

                                   ARTICLE 17

                                    Advances

   Section 17.1 Principal and Interest Advances

      17.1.1. P&I Advance Requirement. The Servicer shall advance P&I
Advances and deposit to the respective Custodial P&I Account on or before
each Remittance Date an amount equal to the aggregate of the difference
between (a) the Monthly Payment that each Borrower was required to pay to the
Servicer on the immediately preceding Due Date (excluding the amount of the
related Servicing Fee) and (b) the amount actually received with respect to
the related Monthly Payment by the Servicer (excluding the amount of the
related Servicing Fee), which deposit may be made in whole or in part from
any Amounts Held for Future Distribution. For purposes of the preceding
sentence, the Monthly Payment on each Balloon Loan with a delinquent Balloon
Amount 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 Loan. Any Amount Held for Future Distribution so used shall
be replaced by the Servicer from its own funds by deposit in the Custodial
P&I Account on or before the Business Day preceding any future Remittance
Date to the extent that funds in the Custodial P&I Account on such Remittance
Date shall be less than the amount required to be remitted on such date

The Servicer shall designate on its records the specific Mortgage Loans and
related installments (or portions thereof) as to which such P&I Advance shall
be deemed to have been made, such determination and related reimbursement
allocations pursuant to the following paragraphs being conclusive for
purposes of Section 17.1.3.

The Servicer shall have no obligation to make any P&I Advances as to any
Mortgage Loan with respect to shortfalls relating to the Servicemembers Civil
Relief Act or similar state and local laws.

      17.1.2. P&I Advance Limitation. The Servicer is required to make P&I
Advances with respect to a Mortgage Loan unless a P&I Advance is reasonably
determined by the Servicer to be eventually non-recoverable from any
Insurance Proceeds, Liquidation Proceeds, or the Borrower.

      17.1.3. P&I Advance Recovery. The Servicer's P&I Advance shall be
recoverable from subsequent Borrower Monthly Payments, Insurance Proceeds,
Liquidation Proceeds related to the Mortgage Loan as to which such P&I
Advance was made or, if the Representing Party is obligated to purchase such
Mortgage Loan from the Trustee, from the price paid for such Mortgage Loan or
pursuant to Section 17.4.

      17.1.4. Advance During Bankruptcy and Foreclosure. During litigation,
bankruptcy proceedings or foreclosure proceedings pertaining to any Mortgage
Loan or while REO transferred to the Trustee through foreclosure or a
deed-in-lieu of foreclosure is held by the Trustee or its successors, the
Servicer must continue to make monthly P&I Advances in respect of each such
Mortgage Loan or REO to the respective Custodial P&I Account. Subject to the
provisions of Section 17.1.2 hereof, these P&I Advances must be made until
the (i) Liquidation of each Mortgage Loan subject to such proceedings or (ii)
in the case of REO transferred to the Trustee through foreclosure or a
deed-in-lieu of foreclosure, the Liquidation of such REO. Advances with
respect to REO shall be made as if the related Mortgage Loan and Mortgage
Note remained in effect.

   Section 17.2 Foreclosure Advances

      17.2.1. Foreclosure Advance Requirement. During foreclosure
proceedings, the Servicer must advance from its own funds all foreclosure
expenses as they occur in accordance with the terms of this Agreement. Such
advances must be made by the Servicer up to the time of final disposition of
the related Mortgaged Property.

      17.2.2. Foreclosure Advance Limitation. The Servicer is required to
make advances pursuant to Section 17.2.1 with respect to a Mortgage Loan
unless the Servicer reasonably determines (i) that such foreclosure will not
increase the proceeds to the Trustee of liquidation of such Mortgage Loan
after reimbursement of the Servicer for its expenses or (ii) that such
expenses will be eventually non-recoverable from any Insurance Proceeds,
Liquidation Proceeds or the Borrower.

      17.2.3. Foreclosure Advance Recovery. If foreclosure proceedings are
terminated, the Servicer must collect all legal fees and costs from the
Borrower. Otherwise, the Servicer's advances for reasonable foreclosure
expenses shall be recoverable from Insurance Proceeds, Liquidation Proceeds
or, if the Representing Party is obligated to purchase a Mortgage Loan from
the Trustee, from the price paid for such Mortgage Loan.

      17.2.4. Foreclosure Advance Records. All foreclosure advances by the
Servicer and reimbursements to the Servicer must be clearly identifiable in
the respective Custodial T & I Account.

   Section 17.3 Tax & Insurance Advances

      17.3.1. T&I Advance Requirement. If a Borrower's Escrow Funds are
insufficient to pay taxes or insurance premiums, the Servicer must advance
from its own funds to the respective Custodial T&I Account an amount
sufficient to cover the shortage and so as to assure the maintenance of a
first lien position of the related Security Instrument on the related
Mortgaged Property.

      17.3.2. T&I Advance Recovery. T&I Advances may be recovered from the
Borrower's subsequent monthly escrow payments, Insurance Proceeds,
Liquidation Proceeds or the Borrower, but must never be recovered from
scheduled principal or interest collections. The Servicer may not recover T&I
Advances from another Borrower's Escrow Funds.

      17.3.3. T&I Advance Limitation. The Servicer is required to make a T&I
Advance with respect to a Mortgage Loan unless such T&I Advance is reasonably
determined by the Servicer to be eventually non-recoverable from any
Insurance Proceeds, Liquidation Proceeds, or the Borrower.

      17.3.4. Advance During Bankruptcy and Foreclosure. During litigation,
bankruptcy proceedings or foreclosure proceedings pertaining to any Mortgage
Loan or while REO transferred to the Trustee through foreclosure or a
deed-in-lieu of foreclosure is held by the Trustee, the Servicer must
continue to make required T&I Advances in respect of each such Mortgage Loan
or REO to the respective Custodial T&I Account. These T&I Advances must be
made until each Mortgage Loan subject to such proceedings is liquidated or in
the case of REO transferred to the Trustee through foreclosure or a
deed-in-lieu of foreclosure is liquidated. Advances with respect to REO shall
be made as if the related Mortgage Loan and Mortgage Note remained in effect.

   Section 17.4 Non-Recoverable Advances

      17.4.1. Ordinary Recovery. If at any time an advance made by a Servicer
hereunder is determined by the Servicer to be a Non-Recoverable Advance, then
the Servicer shall be entitled to be reimbursed for such advance by
withdrawing from the Custodial P&I Account an amount equal to the
Non-Recoverable Advance.

      17.4.2. Final Recovery. If the amounts on deposit in the related
Custodial P&I Account are insufficient to reimburse the Servicer, then prior
to any distribution to the Trustee, the Servicer shall be entitled to
reimbursement from the payments made and the proceeds received with respect
to such Mortgage Loan.

      17.4.3. Non-Recoverable Advance Determination. To determine whether an
Advance is a Non-Recoverable Advance, the Servicer shall employ a broker's
price opinion, which is no more than twelve months old when so employed, of
the fair market value of the Mortgaged Property related to the Mortgage Loan
which is subject to such Advance, and calculate the difference between (a)
the fair market value of such Mortgaged Property and (b) the sum of (i) a
reasonable estimate of foreclosure costs which may be incurred in the
foreclosure of such Mortgaged Property, and (ii) the amount of unreimbursed
Advances made by the Servicer with respect to the related Mortgage Loan
pursuant to the terms of this Agreement, is greater than zero. If such a
difference is greater than zero, then such difference represents the maximum
amount of additional Advances which the Servicer shall make before
determining that any additional Advances in excess of such amount are
Non-Recoverable Advances. If such difference is negative, then the magnitude
of such difference is the amount of previously made unreimbursed Advances
which the Servicer may now regard as Non-Recoverable Advances. The Servicer
shall provide the Master Servicer with an Officer's Certificate upon the
determination that any Advance is a Non-Recoverable Advance.

   Section 17.5 Failure to Advance

      17.5.1. Grounds for Termination. The failure of the Servicer to advance
any funds required to be advanced by the Servicer under this Article 17 is
cause for termination of Servicer under this Agreement.

      17.5.2. Servicer Reimbursement. To the extent the Master Servicer or
the respective trustee, if any, must advance their respective funds due to
the failure of the Servicer to advance as provided for in this Agreement or
to remit funds to the Certificate Account as required by Section 18.3.1, the
Servicer shall reimburse the advancing party for such amounts, on demand,
together with all costs and expenses incurred by the advancing party,
including, but not limited to, interest on the funds advanced. Such interest
shall be calculated at the lesser of the "prime rate" (as set forth in The
Wall Street Journal) and the maximum interest rate permitted by law.

      17.5.3. Servicer Notification. The Servicer must notify the Master
Servicer of any failure of the Servicer to advance as provided for in this
Agreement or to remit funds to the Certificate Account as required by Section
18.3.1 on the day of such failure to advance or remit.

   Section 17.6 Rehabilitation Advance

      17.6.1. Rehabilitation Advance Requirement. The Servicer must advance
from its own funds such amounts as are necessary to restore any damaged REO
not covered by Hazard Insurance or Special Hazard Insurance in accordance
with Section 14.5.

      17.6.2. Rehabilitation Advance Limitation. The Servicer is required to
make advances pursuant to Sections 17.6.1 and 14.5 with respect to a Mortgage
Loan unless the Servicer reasonably determines (i) that such rehabilitation
will not increase the proceeds to the Trustee on liquidation of such Mortgage
Loan after reimbursement of the Servicer for its expenses or (ii) that such
expenses will be eventually non-recoverable from any Insurance Proceeds,
Liquidation Proceeds or the Borrower.

      17.6.3. Rehabilitation Advance Recovery. The Servicer's advances for
reasonable rehabilitation expenses shall be recoverable from Insurance
Proceeds, Liquidation Proceeds, or, if the Representing Party is obligated to
purchase a Mortgage Loan from the Trustee, from the price paid for such
Mortgage Loan.

   Section 17.7 PMI Advances

      17.7.1. PMI Advance Option.In the event that the Servicer has recovered
all Liquidation Proceeds with respect to a Mortgage Loan other than any
amounts as to which a Primary Mortgage Insurance claim has been made, the
Servicer shall have the option, but not the obligation, to advance the amount
of such claim (a "PMI Advance").

      17.7.2. PMI Advance Recovery. The Servicer's PMI Advance shall be
recoverable from the related Primary Mortgage Insurance proceeds; provided,
however that if such PMI Advance or a portion thereof is eventually
determined to be a Non-Recoverable Advance, the Servicer shall be entitled to
reimbursement pursuant to Section 17.4. Notwithstanding the foregoing, the
Servicer shall not be entitled to reimbursement for a PMI Advance if the
amount is not recoverable from the related Primary Mortgage Insurance
proceeds as a result of an action by the Servicer which violates Section
4.4.2.

   Section 17.8 Credit Counseling Fee Advances

      17.8.1. Credit Counseling Fee Advance Option. The Servicer shall have
the option, but not the obligation, to make a Credit Counseling Fee Advance
with respect to any Mortgage Loan.

      17.8.2. Credit Counseling Fee Advance Recovery. The Servicer's Credit
Counseling Fee Advance shall be recoverable from subsequent Borrower Monthly
Payments, Insurance Proceeds or Liquidation Proceeds related to the Mortgage
Loan or, if the Servicer determines that all or part of a Credit Counseling
Fee Advance has become a Non-Recoverable Advance, pursuant to Section 17.4.

                                   ARTICLE 18

                             Reporting Requirements

   Section 18.1 Monthly Accounting Reports

      18.1.1. Monthly Accounting Report Requirement. With respect to any
Remittance Date, the period for monthly accounting reports shall be from the
first Business Day of the prior month through the last Business Day of the
prior month, provided that (I) the reporting period for Prepayments in Full,
Curtailments and Partial Liquidation Proceeds shall be from the Determination
Date in the month of such Remittance Date, and (ii) such report shall include
only (a) Monthly Payments received by the Servicer by the close of business
on the Business Day preceding the Determination Date in the month of such
Remittance Date which relate to the Due Date in such month, or in prior
months to the extent not previously remitted and reported, and (b) any P&I
Advances made in respect of such Monthly Payments. With respect to Type 2
Mortgage Loans, all monthly reports prepared by the Servicer must be complete
and must be received by the Master Servicer by the tenth calendar day of the
following month. With respect to Type 1 Mortgage Loans, all monthly reports
prepared by the Servicer must be complete and must be received by the Master
Servicer by the eighteenth calendar day of the following month. All monthly
accounting reports must show information in, and must be submitted in, a
sequence according to Servicer Loan Number order.

      18.1.2. Monthly Accounting Report Elements. The Servicer shall forward
to the Master Servicer a Monthly Accounting Report (or in such other format
mutually agreed upon by the Servicer and the Master Servicer) setting forth
substantially the information required by FNMA Form 2010.

      The Servicer must also complete and forward to the Master Servicer any
other form or report as provided for in this Agreement, or as reasonably
requested by the Master Servicer, including information with respect to
modified Mortgage Loans.

      18.1.3. Automated Reports. The Servicer may submit to the Master
Servicer for review the Servicer's automated reports which include all of the
information required by the provisions of Section 18.1.2 hereof. Upon
approval by the Master Servicer, the Servicer may submit approved automated
reports to the Master Servicer instead of the Forms listed in Section 18.1.2
hereof.

      18.1.4. Electronic Reporting. With the prior written consent of the
Master Servicer, all reports to be made by the Servicer to the Master
Servicer may be transmitted electronically in lieu of written reporting. If
the Servicer services more than one hundred Mortgage Loans for the Master
Servicer, it shall arrange for electronic transmission of the required
reports. Any expenses occasioned by the electronic transmission of reports
shall be borne by the Servicer.

      18.1.5. Machine Readable Records. At the request of the Master
Servicer, the Servicer shall provide to the Master Servicer, in a mutually
agreed machine readable format, the current names and mailing addresses of
each Borrower. The Master Servicer shall utilize such information solely for
audit purposes, or in the event the Servicer is terminated hereunder.

   Section 18.2 Account Reconciliations

      18.2.1. Reconciliation Preparation. The Servicer shall prepare
reconciliations for each Custodial P&I Account, Custodial T&I Account and
Custodial Buydown Account on a monthly basis and shall forward the same to
the Master Servicer upon request.

      18.2.2. Account Records. Upon request of the Master Servicer, the
Servicer shall also cause the depository for each of the accounts described
in Section 18.2.1 hereof to forward directly to the Master Servicer, copies
of all monthly account statements for the preceding monthly reporting period.

   Section 18.3 Monthly Remittance Requirements

      18.3.1. Remittance of Funds. On each Remittance Date the Servicer shall
transfer, to the extent not previously transferred as required pursuant to
Section 6.1.3(e), from the funds in (or required hereunder to be in) the
respective Custodial P&I Account as of the close of the Business Day
immediately preceding the Determination Date in the month of such Remittance
Date to the related Certificate Account, the following (other than any
Amounts Held for Future Distribution in respect of such Remittance Date not
exceeding the Threshold Amount and any amounts permitted to be retained by
the Servicer or withdrawn from such account by the Servicer pursuant to the
terms of this Agreement):

      (a) all payments on account of principal (including Prepayments in Full
   and Curtailments received during the Applicable Unscheduled Principal
   Receipt Period) and interest (other than payments of interest related to
   any Unscheduled Principal Receipt as to which the Applicable Unscheduled
   Principal Receipt Period is a Mid-Month Receipt Period received by the
   Servicer on or before the last day of the Applicable Unscheduled Principal
   Receipt Period ending in the month in which such prepayment occurs), all
   net REO Disposition proceeds and proceeds received from any condemnation
   award or proceeds in lieu of condemnation other than that portion of such
   proceeds released to the mortgagor in accordance with the terms of the
   Mortgage Loan Documents or Prudent Servicing Practices;

      (b) all net Liquidation Proceeds, all net Partial Liquidation Proceeds
   and Insurance Proceeds, other than any portion of Insurance Proceeds to be
   applied to the restoration or repair of the related Mortgaged Property or
   released to the Borrower in accordance with the requirements of law or
   Prudent Servicing Practices;

      (c) all P&I Advances made by the Servicer;

      (d) the Purchase Price, or portion thereof, paid for any Mortgage Loans
   or property acquired in respect thereof repurchased or substituted by a
   Representing Party; and

      (e) all other amounts required to be deposited in the Custodial P&I
   Account or the Certificate Account pursuant to this Agreement.

      (f) Notwithstanding Section 18.3.1, the Servicer shall be entitled to
   withhold and to pay to itself the applicable Servicing Fee (as adjusted
   pursuant to Section 7.6.1) from any payment on account of interest or
   other recovery (including Net REO Proceeds) as received and prior to
   deposit of such payments in the Certificate Account; provided further that
   with respect to any payment of interest received by the Servicer in
   respect of a Mortgage Loan (whether paid by the Mortgagor or received as
   Liquidation Proceeds, Insurance Proceeds or otherwise) which is less than
   the full amount of interest then due with respect to such Mortgage Loan,
   only that portion of such payment that bears the same relationship to the
   total amount of such payment of interest as the per annum rate used to
   calculate the Servicing Fee, as set forth in Section 4.6, bears to the
   Mortgage Interest Rate borne by such Mortgage Loan shall be allocated to
   the Servicing Fee with respect to such Mortgage Loan.

      18.3.2. Servicer Compensation. The Servicer shall withdraw its
Servicing Fee for each Mortgage Loan net of any Month End Interest payable
pursuant to Section 7.6.1 from the related Custodial P&I Account prior to the
remittance of such amounts to the Certificate Account with all other payments
received with respect to the Mortgage Loans.

                                   ARTICLE 19

                     Transfers and Termination of Servicing

   Section 19.1 Transfer of Servicing

      19.1.1. Transfer Prohibition. The Servicer may not sell or transfer its
portfolio serviced hereunder without the prior written consent of the Master
Servicer, which consent cannot be unreasonably withheld. Further, the
Servicer may not subcontract any of its servicing duties, except as set forth
in Section 11.2.1.

      19.1.2. Transfer Request. Any request for sale or transfer of servicing
shall be reviewed on an individual basis. For a request to be considered,
however, the transferor must submit a written request to the Master Servicer.
The transferee must agree to enter into a servicing agreement with the Master
Servicer substantially in the form of this Agreement and must be approved by
the Master Servicer, and, if applicable, any rating agency with respect
Mortgage Loans which are owned by a trust which has issued mortgage-backed
securities, securitized by such Mortgage Loans, which have been rated at the
request of such trust by such rating agency. The Master Servicer must receive
this documentation at least 45 days prior to the requested date of transfer.
The transferor shall be notified in writing of the Master Servicer's approval
or denial. Such transfer shall be denied if the transferee does not meet the
approval requirements of the Master Servicer, or any such rating agency.

      19.1.3. Servicer Liability. The transferor of servicing shall be liable
to the Master Servicer and the Trustee for any servicing obligation
violations that occur before, during, and up to and including the day the
portfolio is actually transferred. The transferee of servicing shall be
liable for any breach of servicing obligations that occurs after the transfer
of the servicing portfolio.

      19.1.4. Master Servicer's Determination. If the transferor and
transferee disagree about liability for violations of representations and
warranties and servicing requirements hereunder, the Master Servicer has the
right, in its reasonable discretion, to determine which party or parties are
liable for such violations.

   Section 19.2 Termination of Servicing

      19.2.1. Grounds for Termination. The Trustee shall have the right to
terminate for cause the servicing privileges of the Servicer under this
Agreement, either with respect to certain Mortgage Loans serviced hereunder
or with respect to all Mortgage Loans serviced hereunder in the event that
(i) any of the following occur, (ii) the Trustee has given the Servicer prior
written notice of the occurrence of such event, (iii) with respect to clauses
(a), (e) or (j) hereof, the Servicer has failed to cure such event within a
reasonable time, which shall in all cases be no less than ninety (90) days
and (iv) with respect to clause (i), the Servicer has failed to cure such
event by 5:00 PM New York time on the Business Day following receipt of
notice of such failure to advance provided by the Master Servicer or trustee:

      (a) the Servicer has made one or more false or misleading
   representations or warranties in this Agreement or any Mortgage Loan
   Purchase Agreement, or in any documents relating to the foregoing
   agreements;

      (b) the appointment of a trustee or receiver for the Servicer or any of
   its property;

      (c) the execution by the Servicer of an assignment for the benefit of
   its creditors;

      (d) any material change in the financial status of the Servicer that,
   in the opinion of the Trustee, could materially adversely affect the
   Trustee, or the Servicer's ability to service the Mortgage Loans;

      (e) the Servicer's placement on probation or suspension by a federal or
   state government agency, including, without limitation, FHLMC, FNMA or
   GNMA;

      (f) the Servicer's assignment or attempted assignment of any of its
   interests, rights, or obligations set forth herein without the Master
   Servicer's prior written consent;

      (g) the Servicer has been terminated for cause pursuant to the terms of
   another servicing agreement with the Master Servicer;

      (h) failure by the Servicer to duly perform, within the required time
   periods, its obligations under Sections 4.1.3 or 4.1.4, subject to any
   cure period set forth in such Sections;

      (i) failure by the Servicer to make a P&I Advance pursuant to Section
   17.1 hereof; or

      (j) the Servicer has breached any material obligation set forth or
   incorporated by reference in this Agreement (other than any obligation
   referred to in clauses (a) through (i) of this Section 19.2.1) or the
   Mortgage Loan Purchase Agreement, including, without limitation, the
   Servicer's failure to maintain the requisite Fidelity Bond and Errors and
   Omissions Policy in the amounts specified herein.

      19.2.2. Trustee Notification. The Master Servicer shall notify the
Trustee of the occurrence of any of the events set forth in Section 19.2.1,
together with the Master Servicer's recommended course of action regarding
the termination of the Servicer.

      19.2.3. Servicer Termination. (a) Following the occurrence of any of
the events set forth in Section 19.2.1, the Trustee may elect, at its
reasonable discretion, to terminate the Servicer under this Agreement with
respect to the Mortgage Loans. The Trustee shall provide a written
termination notice to the Servicer.

      (b) Notwithstanding anything to the contrary in this Agreement, the
   Trustee or, if applicable, the Trust Administrator may terminate the
   Servicer following the occurrence of any of the events set forth in
   Section 3.09 of the Pooling and Servicing Agreement, in accordance with
   the procedure for termination set forth therein.

      19.2.4. Consequences of Termination. If this Agreement with the
Servicer is terminated pursuant to Section 19.2.3 hereof, the Servicer shall
deliver all Servicer Mortgage Loan Files, in their entirety, for those
Mortgage Loans serviced under this Agreement, as well as any other documents
or reports held by the Servicer concerning such Mortgage Loans, to the
transferee designated by the Trustee and shall assist in the efficient and
timely transfer of the servicing to such transferee. The Servicer shall not
be entitled to compensation for servicing following its termination.

      19.2.5. Effect of Termination. In the event of the termination of this
Agreement, the Servicer is not released from its obligations under this
Agreement. If its servicing is terminated for cause, the Servicer must pay
the expenses of the Master Servicer incurred in connection with transfer of
the servicing and any actual and direct damages, including, without
limitation, actual and direct damages or losses of the Trustee resulting from
such termination.

      19.2.6. Custodial Account Threshold Reduction. In the event that any of
the events specified in clauses (a) through (g) or clause (j) of Section
19.2.1 or in clauses (g), (h) or (i) of Section 4.1.6 occur, the Master
Servicer, in its reasonable discretion, may notify the Servicer in writing
that the applicable Threshold Amount has been reduced to such amount not less
than $1,000 as shall be specified in such notice.

      19.2.7. Expenses of Termination. The Servicer shall promptly reimburse
the Master Servicer (or any designee of the Master Servicer), the Trustee and
the Depositor for all reasonable expenses incurred by the Master Servicer (or
such designee), the Trustee or the Depositor, as such are incurred, in
connection with the termination of the Servicer as servicer and the transfer
of servicing of the Mortgage Loans to a successor servicer. The provisions of
this paragraph shall not limit whatever rights the Master Servicer, the
Trustee or the Depositor may have under other provisions of this Agreement or
otherwise, whether in equity or at law, such as an action for damages,
specific performance or injunctive relief.

                                   ARTICLE 20

                            Miscellaneous Provisions

   Section 20.1 Amendments

      20.1.1. Unilateral Authority. The Servicer acknowledges that the Master
Servicer may, upon written notice, supplement or amend the provisions of this
Agreement from time to time, without the need to obtain the Servicer's
consent to (a) correct ambiguous or erroneous provisions in this Agreement;
(b) make changes necessary or helpful to maintain compliance with applicable
law, including any supplement or amendment necessary to effect or facilitate
compliance by the Servicer with Regulation AB or to conform this Agreement to
industry practices relating to Regulation AB; (c) conform to evolving
industry standards regarding the servicing of residential mortgage loans
generally; (d) modify the Servicer Mortgage Loan Schedule to reflect the
purchase of any Mortgage Loan pursuant to this Agreement or another agreement
or to change the applicable loan Type for any Mortgage Loan; (e) to change
the definition of Applicable Unscheduled Receipt Period with respect to any
Mortgage Loan and any type of Unscheduled Principal Receipt from a Mid-Month
Receipt Period to a Prior Month Receipt Period or from a Prior Month Receipt
Period to a Mid-Month Receipt Period; or (f) make such other modifications or
amendments thereto, which the Master Servicer deems advisable, provided that
no such modification or amendment shall have a material adverse impact so as
to materially increase the obligations of, or to materially decrease the
benefits to, the Servicer.

      20.1.2. Consensual Amendment. Except as provided for in Section 20.1.1
hereof, the Master Servicer must obtain the written consent of the Servicer
to any amendment hereto that would either increase materially the obligations
of the Servicer or decrease materially the benefits to the Servicer.

      20.1.3. Trustee Notification. The Trustee shall be provided with notice
of the substance of any amendments or modifications made to this Servicing
Agreement pursuant to the provisions of this Section 20.1.

      20.1.4. Trustee Disapproval. With regard to any proposed modification
or amendment to this Agreement which shall have a material adverse impact
upon the beneficial rights enjoyed hereunder by the Trustee, the Trustee
shall receive written notice of the substance of any proposed amendments or
modifications at least ten business days prior to the proposed date of
enactment of such amendment or modification which shall also state therein
the proposed date of enactment. If the Trustee notifies the Master Servicer
in writing, prior to the proposed date of enactment, of its opposition to the
adoption of such an amendment or modifications, the Master Servicer shall not
proceed with such modification or amendment.

   Section 20.2 General Construction

      20.2.1. Binding Nature. This Agreement shall be binding upon and inure
to the benefit of the parties hereto and their respective successors and
permitted assigns.

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

      20.2.3. Governing Law. This Agreement and all questions relating to its
validity, interpretation, performance and enforcement shall be governed by,
construed, interpreted and enforced in accordance with the laws of the State
of New York, notwithstanding any New York or other choice-of-law rules to the
contrary.

      20.2.4. Indulgences Not Waivers. Neither the failure nor any delay on
the part of a party to exercise any right, remedy, power or privilege under
this Agreement shall operate as a waiver thereof, nor shall any single or
partial exercise of any right, remedy, power or privilege preclude any other
or further exercise of the same or of any other right, remedy, power or
privilege, nor shall any waiver of any right, remedy, power or privilege,
with respect to any occurrence be construed as a waiver of such right,
remedy, power or privilege with respect to any other occurrence. No waiver
shall be effective unless it is in writing and is signed by the party
asserted to have granted such waiver.

      20.2.5. Titles Not to Affect Interpretation. The titles of the articles
and sections contained in this Agreement are for convenience only, and they
neither form a part of this Agreement nor are they to be used in the
construction or interpretation hereof.

      20.2.6. Provisions Severable. The provisions of this Agreement are
independent of and severable from each other, and no provision shall be
affected or rendered invalid or unenforceable by virtue of the fact that for
any reason any other or others of them may be invalid or unenforceable in
whole or in part.

      20.2.7. Servicer an Independent Contractor. All services, duties and
responsibilities of the Servicer under this Agreement shall be performed and
carried out by the Servicer as an independent contractor, and none of the
provisions of this Agreement shall be deemed to make, authorize or appoint
the Servicer as agent or representative of any Trustee of any Mortgage Loans
or of the Master Servicer.

      20.2.8. Third Party Beneficiary.

      (a) The parties agree that the Trustee and, if applicable, the Trust
   Administrator are intended third party beneficiaries of the
   representations, warranties, covenants and agreements of the Servicer set
   forth in this Agreement. The Trustee shall have full authorization to
   enforce directly against the Servicer any of the obligations of the
   Servicer provided for herein.

      (b) For purposes of this Agreement, including but not limited to
   Section 4.1.3, any Master Servicer shall be considered a third party
   beneficiary to this Agreement entitled to all the rights and benefits
   accruing to any Master Servicer herein as if it were a direct party to
   this Agreement.

      (c) The parties agree that the Depositor is an intended third party
   beneficiary of the representations, warranties, covenants and agreements
   of the Servicer set forth in this Agreement. The Depositor shall have full
   authorization to enforce directly against the Servicer any of the
   obligations of the Servicer provided for herein.

      20.2.9. Counterparts. This Agreement may be executed in counterparts,
each of which shall be deemed an original, and such counterparts shall
constitute one and the same instrument.

      Section 20.3 Regulation AB Compliance; Intent of Parties; Reasonableness.
The parties hereto acknowledge that interpretations of the requirements of
Regulation AB may change over time, whether due to interpretive guidance
provided by the Commission or its staff, consensus among participants in the
asset-backed securities markets, advice of counsel, or otherwise, and agree to
comply with requests made by the Depositor or the Master Servicer in good faith
for delivery of information under these provisions on the basis of evolving
interpretations of Regulation AB. In connection with the Trust, the Servicer
shall cooperate fully with the Master Servicer and the Depositor to deliver to
the Master Servicer and/or the Depositor (including its assignees or designees),
any and all statements, reports, certifications, records and any other
information available to such party and reasonably necessary in the good faith
determination of the Depositor or the Master Servicer to permit the Depositor to
comply with the provisions of Regulation AB, together with such disclosures
relating to the Servicer reasonably believed by the Depositor or the Master
Servicer to be necessary in order to effect such compliance.

<PAGE>

      IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their duly authorized representatives as of the date set forth
above.

                                    WELLS FARGO BANK, N.A.
                                       as Servicer

                                    By: /s/ Bradley A. Davis
                                       ----------------------------------------
                                       Name: Bradley A. Davis
                                       Title: Vice President

                                    WELLS FARGO BANK, N.A.
                                       as Master Servicer

                                    By: /s/ Christopher Furlow
                                       ----------------------------------------
                                       Name: Christopher Furlow
                                       Title: Assistant Vice President

<PAGE>

                                                                       EXHIBIT A

                     WELLS FARGO & COMPANY MASTER GUARANTEE
                 AGREEMENT REGARDING CUSTODIAL P&I ACCOUNT FUNDS

      THIS MASTER GUARANTEE AGREEMENT (the "Guarantee") dated as of May 1, 1999
is entered into by Wells Fargo & Company ("Wells Fargo"), a Delaware
corporation, in favor of each trustee now or hereafter acting in such capacity
for the benefit of the certificateholders of each outstanding and future series
of Wells Fargo Asset Securities Corporation mortgage backed securities
transactions (collectively, the "MBS Transactions"), including without
limitation the trustees identified in Paragraph 8 hereof, and any successor
trustee, all of which trustees are referred collectively in this Guarantee as
the "Trustee."

      WHEREAS, this Guarantee has been required by Standard & Poor's, Fitch,
Inc., Duff & Phelps Credit Rating Co. and Moody's Investors Service, Inc.
(collectively, the "Rating Agencies") (each of which has assigned ratings to
certain of the classes issued in certain of the MBS Transactions) in connection
with their agreement to permit Wells Fargo Bank, N.A., as servicer in the MBS
Transactions (in such capacity, "Servicer"), to hold among Servicer's general
corporate funds for a period of time principal and interest payments, insurance
proceeds, liquidation proceeds and other amounts received by Servicer pertaining
to the mortgage loans underlying the MBS Transactions serviced by Servicer
(collectively, the "Mortgage Loans").

      WHEREAS, Servicer is an indirect, wholly-owned subsidiary of Wells Fargo,
a bank holding company, and Wells Fargo derives substantial benefit from
Servicer's servicing of the Mortgage Loans pursuant to the terms of a separate
servicing agreement between Wells Fargo Bank, N.A., as master servicer, and
Servicer, as servicer, for each MBS Transaction (each, a "Servicing Agreement").

      WHEREAS, to further induce the Rating Agencies to permit Servicer to
withdraw funds from the Custodial P&I Accounts and commingle such funds with the
general assets of Servicer to be used for general corporate purposes until such
time as such funds are required by the terms of the applicable Servicing
Agreement to be remitted to the related Certificate Account, Wells Fargo has
agreed to guarantee the performance of Servicer's obligation under the Servicing
Agreements to timely remit to the related Certificate Accounts the amounts, if
any, so withdrawn from the Custodial P&I Accounts and so used by Servicer.

      NOW THEREFORE, in consideration of the Rating Agencies' permitting the
described arrangement, and for other good and valuable consideration the receipt
and sufficiency of which Wells Fargo hereby acknowledges, Wells Fargo hereby
agrees for the benefit of each Trustee for the benefit of the certificateholders
of each MBS Transaction as follows:

1.    Defined Terms. Capitalized terms used but not defined in this Guarantee
      shall have the respective meanings ascribed to such terms in each
      Servicing Agreement.

2.    Guarantee of Certain Obligation of Servicer under Servicing Agreement.
      Wells Fargo hereby absolutely, unconditionally and irrevocably
      guarantees to each Trustee for the benefit of the certificateholders of
      each MBS Transaction the full and prompt performance, satisfaction and
      discharge of Servicer's obligation under each Servicing Agreement to
      remit to the related Certificate Account by the time specified in each
      Servicing Agreement amounts, if any, withdrawn by the Servicer from the
      related Custodial P&I Account and commingled with the Servicer's
      general assets (such obligation, the "Servicer's Obligation").

3.    Guarantee Absolute. The liability of Wells Fargo under this Guarantee
      shall be absolute and unconditional irrespective of: (i) any change in the
      time, manner of place of performance of, or in any other term of, the
      Servicer's Obligation; (ii) the avoidance or subordination of any
      Servicer's Obligation, or the invalidity or unenforceability thereof;
      (iii) the waiver, consent, extension, forbearance or granting of any
      indulgence, or other modification or amendment to any obligation of
      Servicer under the Servicing Agreement; including without limitation the
      Servicer's Obligation; (iv) the disallowance under bankruptcy or similar
      laws relating to insolvency applicable to Servicer of all or any portion
      of any claim by the Trustee or certificate holders for the performance,
      satisfaction, and discharge of the Servicer's Obligation; or (v) any other
      circumstance that might otherwise constitute a defense to, or a discharge
      of the Servicer's Obligation (except for an express written release or
      discharge of Servicer by the Trustee), all of the foregoing being
      expressly waived by Wells Fargo as defenses to its obligations under this
      Guarantee.

4.    Waiver. Wells Fargo hereby waives any requirement of promptness,
      diligence, presentment, demand, filing of claims with a court in the event
      of receivership or bankruptcy of Servicer, protest, or notice of protest
      with respect to the Servicer's Obligation, and notice of acceptance of
      this Guarantee.

5.    Reinstatement. Guarantor further agrees that, to the extent that the
      Servicer or the Guarantor makes a payment or payments to the Trustee,
      which payment or payments or any part thereof are subsequently
      invalidated, declared to be fraudulent or preferential, set aside and/or
      required to be repaid to the Servicer or the Guarantor or their respective
      estate, trustee, receiver or any other party under any bankruptcy law,
      state or federal law, common law or equitable cause, then to the extent of
      such payment or repayment, this Guarantee and the advances or part thereof
      which have been paid, reduced or satisfied by such amount shall be
      reinstated and continued in full force and effect as of the date such
      initial payments, reduction or satisfaction occurred.

6.    No Waiver of Rights. No failure or delay on the part of the Trustee or the
      Trust Administrator, if applicable, in exercising any right or remedy
      arising under this Guarantee shall operate as a waiver of the Trustee's
      rights hereunder; nor shall any single or partial exercise of any right
      hereunder preclude any other or further exercise hereunder or the exercise
      of any other right by or on behalf of the Trustee.

7.    Representation and Warranties. Wells Fargo hereby represents and warrants
      to the Trustee as follows:

      (a)   Organization. Wells Fargo is a corporation duly organized, validly
            existing and in good standing under the laws of the State of
            Delaware. Wells Fargo is duly qualified and in good standing to
            transact business in each jurisdiction in which such qualification
            is necessary, other than those jurisdictions where the failure to be
            so qualified would not have a material adverse effect upon the
            business, assets or financial condition of Wells Fargo.

      (b)   Authority. Wells Fargo has all requisite corporate power and
            authority to execute and enter into this Guarantee and to perform
            the obligations required of it hereunder. The execution and delivery
            of this Guarantee and the consummation of the undertakings
            contemplated hereby, have each been duly and validly authorized by
            all necessary corporate action, and this Guarantee constitutes a
            valid and legally binding agreement of Wells Fargo enforceable in
            accordance with its terms, except as such enforcement may be limited
            by applicable bankruptcy, moratorium, reorganization or other laws
            and regulations affecting the rights and remedies of creditors
            generally.

      (c)   No Conflicts. The execution, delivery, and performance of this
            Guarantee by Wells Fargo will not constitute (a) a violation or
            breach of any terms or provisions of Wells Fargo's Restated
            Certificate of Incorporation or by-laws or (b) a violation or breach
            of any terms or provisions of, or a default under any provision of
            statutory law or published regulation or any indenture, mortgage,
            deed of trust, loan agreement or other agreement or instrument to
            which Wells Fargo is a party or by which Wells Fargo is bound, or
            any order, rule or regulation binding on Wells Fargo and known to
            Wells Fargo of any court or governmental agency or body having
            jurisdiction over Wells Fargo.

8.    Notices. All notices and other communications hereunder shall be in
      writing (including a writing delivered by facsimile transmission) and
      shall be deemed to have been duly given (a) when delivered, if sent by
      registered or certified mail (return receipt requested), or (b) when
      delivered, if delivered personally or by facsimile, or (c) on the
      following business day, if sent by overnight mail or overnight courier, in
      each case to Wells Fargo and the Trustee at the following addresses (or at
      such other addresses as shall be specified by like notice):

      If to Wells Fargo :

            Corporate Secretary
            Wells Fargo & Company
            Wells Fargo Center
            Sixth and Marquette
            Minneapolis, MN  55479-1026
            Facsimile No.: 612-667-6082

      With a copy to:

            Corporate Treasury
            Wells Fargo & Company
            Wells Fargo Center
            Sixth and Marquette
            Minneapolis, MN  55479-1019
            Facsimile No.: 612-667-9908

      If to the Trustee:

            Wachovia Bank, National Association, as Trustee
            401 South Tryon Street
            Charlotte, North Carolina 28202

      or to such other address to receive any such confirmation or notice as
      the notice party may have designated by written notice to the other
      notice party at the above address.

9.    Successors and Assigns. This Guarantee shall be binding upon Wells Fargo,
      its successors, transferees, and assigns, and shall inure to the benefit
      of and be enforceable by the Trustee and its successors, transferees and
      assigns.

10.   Waiver of Subrogation. As long as any Servicer's Obligation has not been
      satisfied and discharged in full, Wells Fargo shall have no right of
      subrogation and hereby waives any right to enforce any remedy which the
      Trustee now has or may hereafter have against Servicer or any other
      guarantor of all or any part of the Servicer's Obligation.

11.   Subordination. Wells Fargo agrees that any and all claims of Wells Fargo
      against Servicer or any other guarantor of all or any part of the
      Servicer's Obligation, whether arising by reason of any payment by Wells
      Fargo pursuant to the provisions hereof or otherwise, and all indebtedness
      of Servicer to Wells Fargo, shall be subordinate and subject in right of
      payment to the full and prompt performance, satisfaction, and discharge,
      of Servicer's Obligation.

12.   Entire Agreement; Amendment and Waivers. This Guarantee contains the
      complete and entire agreement of Wells Fargo with respect to its
      provisions, and no change, waiver or amendment hereto shall be binding
      upon Wells except as separately set forth in a writing and duly executed
      by Wells Fargo.

13.   Severability. The invalidity, illegality, or unenforceability of any
      provision of this Guarantee pursuant to judicial decree shall not affect
      the validity, legality, or enforceability of any other provisions of this
      Guarantee, all of which other provisions shall remain in full force and
      effect as written.

14.   Governing Law. This Guarantee shall be governed by and construed in
      accordance with the laws of the State of New York (regardless of the laws
      that might otherwise govern under applicable principles of conflicts of
      law or comity).

<PAGE>

      IN WITNESS WHEREOF, the undersigned, a duly authorized officer of the
Guarantor, has executed this Guarantee on behalf of the Guarantor as of the day
and year first written above.

                                          WELLS FARGO & COMPANY

                                          By
                                            -----------------------------------
                                             [   ]
                                             [   ]

<PAGE>

                                                                     EXHIBIT B

                            FORM OF ANNUAL CERTIFICATION

            Re: The Servicing Agreement dated as of [______], (the
            "Agreement"), between Wells Fargo Bank, N.A., a national
            banking association (the "Servicer") and Wells Fargo Bank,
            N.A., a national banking association, (the "Master
            Servicer"),

            I, ________________________________, the _______________________
      of Wells Fargo Bank, N.A., certify to the Depositor and the Master
      Servicer, and their officers, with the knowledge and intent that they
      will rely upon this certification, that:

            (1) I have reviewed the servicer compliance statement of the
      Servicer provided in accordance with Item 1123 of Regulation AB (the
      "Compliance Statement"), the report on assessment of the Servicer's
      compliance with the servicing criteria set forth in Item 1122(d) of
      Regulation AB (the "Servicing Criteria"), provided in accordance with
      Rules 13a-18 and 15d-18 under Securities Exchange Act of 1934, as
      amended (the "Exchange Act") and Item 1122 of Regulation AB (the
      "Servicing Assessment"), the registered public accounting firm's
      attestation report provided in accordance with Rules 13a-18 and 15d-18
      under the Exchange Act and Section 1122(b) of Regulation AB (the
      "Attestation Report"), and all servicing reports, officer's
      certificates and other information relating to the servicing of the
      Mortgage Loans by the Servicer during 200[_] that were delivered by the
      Depositor and the Master Servicer pursuant to the Agreement
      (collectively, the "Servicer Servicing Information");

            (2) Based on my knowledge, the Servicer Servicing Information,
      taken as a whole, does not contain any untrue statement of a material
      fact or omit to state a material fact necessary to make the statements
      made, in the light of the circumstances under which such statements
      were made, not misleading with respect to the period of time covered by
      the Servicer Servicing Information;

            (3) Based on my knowledge, all of the Servicer Servicing
      Information required to be provided by the Servicer under the Agreement
      has been provided to the Depositor and the Master Servicer;

            (4) I am responsible for reviewing the activities performed by
      the Servicer as servicer under the Agreement, and based on my knowledge
      and the compliance review conducted in preparing the Compliance
      Statement and except as disclosed in the Compliance Statement, the
      Servicing Assessment or the Attestation Report, the Servicer has
      fulfilled its obligations under the Agreement in all material respects;
      and

            (5) The Compliance Statement required to be delivered by the
      Servicer pursuant to the Agreement, and the Servicing Assessment and
      Attestation Report required to be provided by the Servicer and by any
      Subservicer or Subcontractor pursuant to the Agreement, have been
      provided to the Depositor and the Master Servicer. Any material
      instances of noncompliance described in such reports have been
      disclosed to the Depositor and the Master Servicer. Any material
      instance of noncompliance with the Servicing Criteria has been
      disclosed in such reports.

      Date: _________________________

      By:

      Name: ________________________________

      Title: ________________________________

<PAGE>

                                                                     EXHIBIT C

                             SUBSERVICER INFORMATION

      (A) the Subservicer's form of organization;

      (B) a description of how long the Subservicer has been servicing
residential mortgage loans; a general discussion of the Subservicer's
experience in servicing assets of any type as well as a more detailed
discussion of the Subservicer's experience in, and procedures for, the
servicing function it will perform under the Agreement; information regarding
the size, composition and growth of the Subservicer's portfolio of
residential mortgage loans of a type similar to the Mortgage Loans and
information on factors related to the Subservicer that may be material, in
the good faith judgment of the Master Servicer or the Depositor, to any
analysis of the servicing of the Mortgage Loans or the related asset-backed
securities, as applicable, including, without limitation:

            (1) whether any prior securitizations of mortgage loans of a type
      similar to the Mortgage Loans involving the Subservicer have defaulted
      or experienced an early amortization or other performance triggering
      event because of servicing during the three-year period immediately
      preceding the date of engagement of the Subservicer;

            (2) the extent of outsourcing the Subservicer utilizes;

            (3) whether there has been previous disclosure of material
      noncompliance with the applicable servicing criteria with respect to
      securitizations of residential mortgage loans involving the Subservicer
      as a servicer during the three-year period immediately preceding the
      date of engagement of the Subservicer;

            (4) whether the Subservicer has been terminated as servicer in a
      residential mortgage loan securitization, either due to a servicing
      default or to application of a servicing performance test or trigger;
      and

            (5) such other information as the Master Servicer or the
      Depositor may reasonably request for the purpose of compliance with
      Item 1108(b)(2) of Regulation AB;

      (C) a description of any material changes during the three-year period
immediately preceding the date of engagement of the Subservicer to the
Subservicer's policies or procedures with respect to the servicing function
it will perform under the Agreement for mortgage loans of a type similar to
the Mortgage Loans;

      (D) information regarding the Subservicer's financial condition, to the
extent that there is a material risk that an adverse financial event or
circumstance involving the Subservicer could have a material adverse effect
on the performance by the Subservicer of its servicing obligations under the
Agreement;

      (E) information regarding advances made by the Subservicer on the
Mortgage Loans and the Subservicer's overall servicing portfolio of
residential mortgage loans for the three-year period immediately preceding
the date of engagement of the Subservicer, which may be limited to a
statement by an authorized officer of the Subservicer to the effect that the
Subservicer has made all advances required to be made on residential mortgage
loans serviced by it during such period, or, if such statement would not be
accurate, information regarding the percentage and type of advances not made
as required, and the reasons for such failure to advance;

      (F) a description of the Subservicer's processes and procedures
designed to address any special or unique factors involved in servicing loans
of a similar type as the Mortgage Loans;

      (G) a description of the Subservicer's processes for handling
delinquencies, losses, bankruptcies and recoveries, such as through
liquidation of mortgaged properties, sale of defaulted mortgage loans or
workouts; and

      (H) information as to how the Subservicer defines or determines
delinquencies and charge-offs, including the effect of any grace period,
re-aging, restructuring, partial payments considered current or other
practices with respect to delinquency and loss experience.

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00134-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00134-of-00352.parquet"}]]