Barclays Bank PLC
                                                         5 The North Colonnade
                                                         Canary Wharf
                                                         London E14 4BB

                                                         Tel +44 (0)20 7623 2323


DATE:                 March 30, 2007

TO:                   Wells Fargo Bank, National Association, not individually,
                      but solely as Securities Administrator for Wells Fargo
                      Home Equity Asset-Backed Securities 2007-1 Trust, Home
                      Equity Asset-Backed Certificates, Series 2007-1

ATTENTION:            Client Manager - WFHET 2007-1

TELEPHONE:            410-884-2000

FACSIMILE:            410-715-2380

FROM:                 Barclays Bank PLC

SUBJECT:              Fixed Income Derivatives Confirmation

REFERENCE NUMBER:     1680781B

The purpose of this long-form confirmation ("Confirmation") is to confirm the
terms and conditions of the Transaction entered into on the Trade Date specified
below (the "Transaction") between Barclays Bank PLC ("Party A") and Wells Fargo
Bank, National Association, not individually, but solely as securities
administrator (the "Securities Administrator") on behalf of the supplemental
interest trust with respect to the Wells Fargo Home Equity Asset-Backed
Securities 2007-1 Trust (the "Trust") ("Party B") created under the Pooling and
Servicing Agreement, dated as of March 30, 2007, among Wells Fargo Asset
Securities Corporation, as Depositor, HSBC Bank USA, National Association, as
Trustee, and Wells Fargo Bank, National Association, in its capacity as Servicer
and as Securities Administrator (the "Base Agreement"). This Confirmation
evidences a complete and binding agreement between you and us to enter into the
Transaction on the terms set forth below and replaces any previous agreement
between us with respect to the subject matter hereof. This Confirmation
constitutes a "Confirmation" and also constitutes a "Schedule" as referred to in
the ISDA Master Agreement, and Paragraph 13 of a Credit Support Annex to the
Schedule.

1.    This Confirmation shall supplement, form a part of, and be subject to an
      agreement in the form of the ISDA Master Agreement (Multicurrency - Cross
      Border) as published and copyrighted in 1992 by the International Swaps
      and Derivatives Association, Inc. (the "ISDA Master Agreement"), as if
      Party A and Party B had executed an agreement in such form on the date
      hereof, with a Schedule as set forth in Item 3 of this Confirmation, and
      an ISDA Credit Support Annex (Bilateral Form - ISDA Agreements Subject to
      New York Law Only version) as published and copyrighted in 1994 by the
      International Swaps and Derivatives Association, Inc., with Paragraph 13
      thereof as set forth in Annex A hereto (the "Credit Support Annex"). For
      the avoidance of doubt, the Transaction described herein shall be the sole
      Transaction governed by such ISDA Master Agreement. In the event of any
      inconsistency among any of the following documents, the relevant document
      first listed shall govern: (i) this Confirmation, exclusive of the
      provisions set forth in Item 3 hereof and Annex A hereto; (ii) the
      provisions set forth in Item 3 hereof, which are incorporated by reference
      into the Schedule; (iii) the Credit Support Annex; (iv) the Definitions;
      and (v) the ISDA Master Agreement.

      Each reference herein to a "Section" (unless specifically referencing the
      Base Agreement) or to a "Section of this Agreement" will be construed as a
      reference to a Section of the ISDA Master Agreement; each reference herein
      to a "Part" will be construed as a reference to the provisions herein
      deemed incorporated in a Schedule to the ISDA Master Agreement; each
      reference herein to a "Paragraph" will be construed as a reference to a
      Paragraph of the Credit Support Annex.

2.    The terms of the particular Transaction to which this Confirmation relates
      are as follows:

      Notional Amount:                With respect to any Calculation Period,
                                      the amount set forth for such period on
                                      Schedule I attached hereto.

      Trade Date:                     March 30, 2007

      Effective Date:                 March 30, 2007

      Termination Date:               December 25, 2011, which for the purpose
                                      of the final Fixed Rate Payer Calculation
                                      Period is subject to No Adjustment, and
                                      for the purpose of the final Floating Rate
                                      Payer Calculation Period is subject to
                                      adjustment in accordance with the Business
                                      Day Convention.

      Fixed Amounts:

             Fixed Rate Payer:        Party B

             Fixed Rate Payer
             Period End Dates:        The 25th calendar day of each month during
                                      the Term of this Transaction, commencing
                                      April 25, 2007, subject to No Adjustment.

             Fixed Rate Payer
             Payment Dates:           Early Payment shall be applicable. For
                                      each Calculation Period, the Fixed Rate
                                      Payer Payment Date shall be the first
                                      Business Day prior to the related Fixed
                                      Rate Payer Period End Date.

             Fixed Rate:              With respect to any Calculation Period,
                                      the fixed rate set forth for such period
                                      on Schedule I attached hereto.


             Fixed Rate Day
             Count Fraction:          30/360

      Floating Amounts:

             Floating Rate Payer:     Party A

             Floating Rate Payer

             Period End Dates:        The 25th calendar day of
                                      each month during the Term of this
                                      Transaction, commencing April 25,
                                      2007, subject to adjustment in accordance
                                      with the Business Day Convention.

             Floating Rate Payer
             Payment Dates:           Early Payment shall be applicable. For
                                      each Calculation Period, the Floating Rate
                                      Payer Payment Date shall be the first
                                      Business Day prior to the related Floating
                                      Rate Payer Period End Date.

             Floating Rate Option:    USD-LIBOR-BBA


             Designated Maturity:     One month

             Floating Rate Day
             Count Fraction:          Actual/360

             Reset Dates:             The first day of each Calculation Period.

             Compounding:             Inapplicable

             Business Days:           New York

             Business Day Convention: Modified Following

             Calculation Agent:       Party A

        Account Details and Settlement Information:

               Payments to Party A:   Correspondent: BARCLAYS BANK PLC NEW YORK
                                      FEED: 026002574
                                      Beneficiary: BARCLAYS SWAPS
                                      Beneficiary Account: 050-01922-8

               Payments to Party B:   Wells Fargo Bank, National Association

                                      ABA #: 121000248
                                      Acct #: 3970771416
                                      Acct. Name: SAS Clearing
                                      Ref: For Further Credit 50999801,
                                      WFHET 2007-1 Supplemental Interest
                                      Trust Account



<PAGE>

3.     Provisions Deemed Incorporated in a Schedule to the ISDA Master
       Agreement:

Part 1. Termination Provisions.

For the purposes of this Agreement:-

(a)    "Specified Entity" will not apply to Party A or Party B for any purpose.

(b)    "Specified Transaction" will not apply to Party A or Party B for any
       purpose.

(c)    Events of Default.

       The statement below that an Event of Default will apply to a specific
       party means that upon the occurrence of such an Event of Default with
       respect to such party, the other party shall have the rights of a
       Non-defaulting Party under Section 6 of this Agreement; conversely, the
       statement below that such event will not apply to a specific party means
       that the other party shall not have such rights.

       (i)    The "Failure to Pay or Deliver" provisions of Section 5(a)(i) will
              apply to Party A and will apply to Party B.

       (ii)   The "Breach of Agreement" provisions of Section 5(a)(ii) will
              apply to Party A and will not apply to Party B; provided, however,
              that notwithstanding anything to the contrary in Section 5(a)(ii),
              any failure by Party A to comply with or perform any obligation to
              be complied with or performed by Party A under the Credit Support
              Annex shall not constitute an Event of Default under Section
              5(a)(ii) unless (A) a Required Ratings Downgrade Event has
              occurred and been continuing for 30 or more Local Business Days
              and (B) such failure is not remedied on or before the third Local
              Business Day after notice of such failure is given to Party A.

       (iii)  The "Credit Support Default" provisions of Section 5(a)(iii) will
              apply to Party A and will not apply to Party B except that Section
              5(a)(iii)(1) will apply to Party B solely in respect of Party B's
              obligations under Paragraph 3(b) of the Credit Support Annex;
              provided, however, that notwithstanding anything to the contrary
              in Section 5(a)(iii)(1), any failure by Party A to comply with or
              perform any obligation to be complied with or performed by Party A
              under the Credit Support Annex shall not constitute an Event of
              Default under Section 5(a)(iii) unless (A) a Required Ratings
              Downgrade Event has occurred and been continuing for 30 or more
              Local Business Days and (B) such failure is not remedied on or
              before the third Local Business Day after notice of such failure
              is given to Party A.

       (iv)   The "Misrepresentation" provisions of Section 5(a)(iv) will apply
              to Party A and will not apply to Party B.

       (v)    The "Default under Specified Transaction" provisions of Section
              5(a)(v) will not apply to Party A and will not apply to Party B.

       (vi)   The "Cross Default" provisions of Section 5(a)(vi) will apply to
              Party A and will not apply to Party B. For purposes of Section
              5(a)(vi), solely with respect to Party A:

              "Specified Indebtedness" will have the meaning specified in
              Section 14, except that such term shall not include obligations in
              respect of deposits received in the ordinary course of Party A's
              banking business.

              "Threshold Amount" means with respect to Party A an amount equal
              to 3% of Party A's shareholders' equity (on a consolidated basis)
              determined in accordance with generally accepted accounting
              principles in Party A's jurisdiction of incorporation or
              organization as at the end of Party A's most recently completed
              fiscal year.

       (vii)  The "Bankruptcy" provisions of Section 5(a)(vii) will apply to
              Party A and Party B; provided that clauses (2), (7) and (9)
              thereof shall not apply to Party B; provided further that clause
              (4) thereof shall not apply to Party B with respect to proceedings
              or petitions instituted or presented by Party A or any Affiliate
              of Party A; provided further that clause (6) shall not apply to
              Party B to the extent that it refers to (i) any appointment that
              is effected by or contemplated in connection with the Base
              Agreement (as defined above) or (ii) any appointment to which
              Party B has not become subject; and provided further that clause
              (8) shall not apply to Party B to the extent that clause (8)
              relates to clauses of Section 5(a)(vii) that are not applicable to
              Party B.

       (viii) The "Merger Without Assumption" provisions of Section 5(a)(viii)
              will apply to Party A and will apply to Party B.

(d)    Termination Events.

       The statement below that a Termination Event will apply to a specific
       party means that upon the occurrence of such a Termination Event, if such
       specific party is the Affected Party with respect to a Tax Event, the
       Burdened Party with respect to a Tax Event Upon Merger (except as noted
       below) or the non-Affected Party with respect to a Credit Event Upon
       Merger, as the case may be, such specific party shall have the right to
       designate an Early Termination Date in accordance with Section 6 of this
       Agreement; conversely, the statement below that such an event will not
       apply to a specific party means that such party shall not have such
       right; provided, however, with respect to "Illegality" the statement that
       such event will apply to a specific party means that upon the occurrence
       of such a Termination Event with respect to such party, either party
       shall have the right to designate an Early Termination Date in accordance
       with Section 6 of this Agreement.

       (i)    The "Illegality" provisions of Section 5(b)(i) will apply to Party
              A and will apply to Party B.

       (ii)   The "Tax Event" provisions of Section 5(b)(ii) will apply to Party
              A and will apply to Party B.

       (iii)  The "Tax Event Upon Merger" provisions of Section 5(b)(iii) will
              apply to Party A and will apply to Party B, provided that Party A
              shall not be entitled to designate an Early Termination Date by
              reason of a Tax Event upon Merger in respect of which it is the
              Affected Party.

       (iv)   The "Credit Event Upon Merger" provisions of Section 5(b)(iv) will
              not apply to Party A and will not apply to Party B.

(e)    The "Automatic Early Termination" provision of Section 6(a) will not
       apply to Party A and will not apply to Party B.

(f)    Payments on Early Termination. For the purpose of Section 6(e) of this
       Agreement:

       (i)    Market Quotation will apply, provided, however, that, in the event
              of a Derivative Provider Trigger Event, the following provisions
              will apply:

              (A)    The definition of Market Quotation in Section 14 shall be
                     deleted in its entirety and replaced with the following:

                     "Market Quotation" means, with respect to one or more
                     Terminated Transactions, a Firm Offer which is (1) made by
                     a Reference Market-maker that is an Eligible Replacement,
                     (2) for an amount that would be paid to Party B (expressed
                     as a negative number) or by Party B (expressed as a
                     positive number) in consideration of an agreement between
                     Party B and such Reference Market-maker to enter into a
                     Replacement Transaction, and (3) made on the basis that
                     Unpaid Amounts in respect of the Terminated Transaction or
                     group of Transactions are to be excluded but, without
                     limitation, any payment or delivery that would, but for the
                     relevant Early Termination Date, have been required
                     (assuming satisfaction of each applicable condition
                     precedent) after that Early Termination Date is to be
                     included.

              (B)    The definition of Settlement Amount shall be deleted in its
                     entirety and replaced with the following:

                     "Settlement Amount" means, with respect to any Early
                     Termination Date, an amount equal to:

                     (a)    If a Market Quotation for the relevant Terminated
                            Transaction or group of Terminated Transactions is
                            accepted by Party B so as to become legally binding
                            on or before the day falling ten Local Business Days
                            after the day on which the Early Termination Date is
                            designated, or such later day as Party B may specify
                            in writing to Party A, but in either case no later
                            than one Local Business Day prior to the Early
                            Termination Date (such day, the "Latest Settlement
                            Amount Determination Day"), the Termination Currency
                            Equivalent of the amount (whether positive or
                            negative) of such Market Quotation;

                     (b)    If, on the Latest Settlement Amount Determination
                            Day, no Market Quotation for the relevant Terminated
                            Transaction or group of Terminated Transactions has
                            been accepted by Party B so as to become legally
                            binding and one or more Market Quotations from
                            Approved Replacements have been made and remain
                            capable of becoming legally binding upon acceptance,
                            the Settlement Amount shall equal the Termination
                            Currency Equivalent of the amount (whether positive
                            or negative) of the lowest of such Market Quotations
                            (for the avoidance of doubt, the lowest of such
                            Market Quotations shall be the lowest Market
                            Quotation of such Market Quotations expressed as a
                            positive number or, if any of such Market Quotations
                            is expressed as a negative number, the Market
                            Quotation expressed as a negative number with the
                            largest absolute value); or

                     (c)    If, on the Latest Settlement Amount Determination
                            Day, no Market Quotation for the relevant Terminated
                            Transaction or group of Terminated Transactions is
                            accepted by Party B so as to become legally binding
                            and no Market Quotation from an Approved Replacement
                            remains capable of becoming legally binding upon
                            acceptance, the Settlement Amount shall equal Party
                            B's Loss (whether positive or negative and without
                            reference to any Unpaid Amounts) for the relevant
                            Terminated Transaction or group of Terminated
                            Transactions.

              (C)    Party A may obtain Market Quotations, and if Party B
                     requests Party A in writing to obtain Market Quotations,
                     Party A shall use its reasonable efforts to do so before
                     the Latest Settlement Amount Determination Day.

              (D)    If the Settlement Amount is a negative number, Section
                     6(e)(i)(3) shall be deleted in its entirety and replaced
                     with the following:

                     "(3) Second Method and Market Quotation. If the Second
                     Method and Market Quotation apply, (I) Party B shall pay to
                     Party A an amount equal to the absolute value of the
                     Settlement Amount in respect of the Terminated
                     Transactions, (II) Party B shall pay to Party A the
                     Termination Currency Equivalent of the Unpaid Amounts owing
                     to Party A and (III) Party A shall pay to Party B the
                     Termination Currency Equivalent of the Unpaid Amounts owing
                     to Party B; provided, however, that (x) the amounts payable
                     under the immediately preceding clauses (II) and (III)
                     shall be subject to netting in accordance with Section 2(c)
                     of this Agreement and (y) notwithstanding any other
                     provision of this Agreement, any amount payable by Party A
                     under the immediately preceding clause (III) shall not be
                     netted-off against any amount payable by Party B under the
                     immediately preceding clause (I)."

              (E)    At any time on or before the Latest Settlement Amount
                     Determination Day at which two or more Market Quotations
                     from Approved Replacements remain capable of becoming
                     legally binding upon acceptance, Party B shall be entitled
                     to accept only the lowest of such Market Quotations (for
                     the avoidance of doubt, the lowest of such Market
                     Quotations shall be the lowest Market Quotation of such
                     Market Quotations expressed as a positive number or, if any
                     of such Market Quotations is expressed as a negative
                     number, the Market Quotation expressed as a negative number
                     with the largest absolute value).

       (ii)   The Second Method will apply.

(g)    "Termination Currency" means USD.

(h)    Additional Termination Events. Additional Termination Events will apply
       as provided in Part 5(c).

<PAGE>

Part 2. Tax Matters.

(a)    Tax Representations.

       (i)    Payer Representations. For the purpose of Section 3(e) of this
              Agreement:

              (A)    Party A makes the following representation(s):

                     None.

              (B)    Party B makes the following representation(s):

                     None.

       (ii)   Payee Representations. For the purpose of Section 3(f) of this
              Agreement:

              (A)    Party A makes the following representation(s):

                     None.

              (B)    Party B makes the following representation(s):

                     None.

(b)    Tax Provisions.

       (i)    Indemnifiable Tax. Notwithstanding the definition of
              "Indemnifiable Tax" in Section 14 of this Agreement, all Taxes in
              relation to payments by Party A shall be Indemnifiable Taxes
              unless (i) such Taxes are assessed directly against Party B and
              not by deduction or withholding by Party A or (ii) arise as a
              result of a Change in Tax Law (in which case such Tax shall be an
              Indemnifiable Tax only if such Tax satisfies the definition of
              Indemnifiable Tax provided in Section 14). In relation to payments
              by Party B, no Tax shall be an Indemnifiable Tax, unless the Tax
              is due to a Change in Tax Law and otherwise satisfies the
              definition of Indemnifiable Tax provided in Section 14.


<PAGE>

Part 3. Agreement to Deliver Documents.

 (a) For the purpose of Section 4(a)(i), tax forms, documents, or certificates
to be delivered are:

<TABLE>
<CAPTION>

Party required to   Form/Document/                           Date by which to
deliver document    Certificate                              be delivered
<S>                 <C>                                      <C>
Party A             Any form or document required or         Promptly upon reasonable demand by
                    reasonably requested to allow Party B    Party B.
                    to make payments under the Agreement
                    without any deduction or withholding
                    for or on account of any Tax, or with
                    such deduction or withholding at a
                    reduced rate.

Party B             (i) A correct, complete and duly         In each case (a) upon entering into
                    executed IRS Form W-9 (or any            this Agreement, provided however,
                    successor thereto) of the Trust that     with respect to (i), Party B shall
                    eliminates U.S. federal withholding      apply for the employer identification
                    and backup withholding tax on payments   number of the Trust promptly upon
                    under this Agreement, (ii) if            entering into this Agreement and
                    requested by Party A, a correct,         deliver the related correct, complete
                    complete and executed Form W-8IMY of     and duly executed IRS Form W-9
                    the Trust, and (iii) a complete and      promptly upon receipt, and in any
                    executed IRS Form W-9, W-8BEN, W-8ECI,   event, no later than the first
                    or W-8IMY (with attachments) (as         Payment Date of this Transaction;
                    appropriate) from each                   (b) in the case of a W-8ECI, W-8IMY,
                    Certificateholder that is not an         and W-8BEN that does not include a
                    "exempt recipient" as that term is       U.S. taxpayer identification number
                    defined in Treasury regulations          in line 6, before December 31 of each
                    section 1.6049-4(c)(1)(ii), that         third succeeding calendar year, (c)
                    eliminates U.S. federal withholding      promptly upon reasonable demand by
                    and backup withholding tax on payments   Party A, and (d) promptly upon
                    under this Agreement.                    learning that any such Form
                                                             previously provided by Party B has
                                                             become obsolete or incorrect.
</TABLE>

(b)    For the purpose of Section 4(a)(ii), other documents to be delivered are:

<TABLE>
<CAPTION>
                                                                                      Covered by
Party required to   Form/Document/                   Date by which to                 Section 3(d)
deliver document    Certificate                      be delivered                     Representation

<S>                 <C>                              <C>                              <C>
Party A and         A certificate of an authorized   Upon the execution and           Yes
Party B             officer of the party (except,    delivery of this Agreement
                    with respect to Party B, of
                    the Securities Administrator),
                    as to the incumbency and
                    authority of the respective
                    officers of the party signing
                    the Agreement, this
                    Confirmation, and any relevant
                    Credit Support Document, as
                    the case may be
Party A             An opinion of counsel to Party   Upon the execution and           No
                    A reasonably satisfactory to     delivery of this Agreement
                    Party B.
Party B             An opinion of counsel to Party   Upon the execution and           No
                    B reasonably satisfactory to     delivery of this Agreement
                    Party A.
Party B             An executed copy of the Base     Within 30 days after the date    No
                    Agreement                        of this Agreement.
</TABLE>

Part 4. Miscellaneous.

(a)    Address for Notices: For the purposes of Section 12(a) of this Agreement:

       Address for notices or communications to Party A:

       Address:      5 The North Colonnade
                     Canary Wharf
                     London E14 4BB
       Facsimile:    44(20) 777 36461
       Phone:        44(20) 777 36810

       (For all purposes)

       Address for notices or communications to Party B:

       Address:      Wells Fargo Bank, National Association
                     9062 Old Annapolis Road
                     Columbia, Maryland 21045

       Attention:    Client Manager - WFHET 2007-1
       Facsimile:    (410) 715-2380
       Phone:        (410) 884-2000

       (For all purposes)

(b)    Process Agent. For the purpose of Section 13(c):

       Party A appoints as its Process Agent: Not applicable.

       Party B appoints as its Process Agent: Not applicable.

(c)    Offices. The provisions of Section 10(a) will apply to this Agreement.

(d)    Multibranch Party. For the purpose of Section 10(c) of this Agreement:

       Party A is not a Multibranch Party.

       Party B is not a Multibranch Party.

(e)    Calculation Agent. The Calculation Agent is Party A.

(f)    Credit Support Document.

       Party A:      The Credit Support Annex, and any guarantee in support
                     of Party A's obligations under this Agreement.

       Party B:      The Credit Support Annex, solely in respect of Party
                     B's obligations under Paragraph 3(b) of the Credit Support
                     Annex.

(g)    Credit Support Provider.

       Party A:      The guarantor under any guarantee in support of Party
                     A's obligations under this Agreement.

       Party B:      None.

(h)    Governing Law. The parties to this Agreement hereby agree that the law of
       the State of New York shall govern their rights and duties in whole
       (including any claim or controversy arising out of or relating to this
       Agreement), without regard to the conflict of law provisions thereof
       other than New York General Obligations Law Sections 5-1401 and 5-1402.

(i)    Netting of Payments. The parties agree that subparagraph (ii) of Section
       2(c) will apply to each Transaction hereunder.

(j)    Affiliate. "Affiliate" shall have the meaning assigned thereto in Section
       14; provided, however, that Party B shall be deemed to have no Affiliates
       for purposes of this Agreement, including for purposes of Section
       6(b)(ii).



<PAGE>

Part 5. Others Provisions.

(a)    Definitions. Unless otherwise specified in a Confirmation, this Agreement
       and each Transaction under this Agreement are subject to the 2000 ISDA
       Definitions as published and copyrighted in 2000 by the International
       Swaps and Derivatives Association, Inc. (the "Definitions"), and will be
       governed in all relevant respects by the provisions set forth in the
       Definitions, without regard to any amendment to the Definitions
       subsequent to the date hereof. The provisions of the Definitions are
       hereby incorporated by reference in and shall be deemed a part of this
       Agreement, except that (i) references in the Definitions to a "Swap
       Transaction" shall be deemed references to a "Transaction" for purposes
       of this Agreement, and (ii) references to a "Transaction" in this
       Agreement shall be deemed references to a "Swap Transaction" for purposes
       of the Definitions. Each term capitalized but not defined in this
       Agreement shall have the meaning assigned thereto in the Base Agreement.

(b)    Amendments to ISDA Master Agreement.

       (i)    Single Agreement. Section 1(c) is hereby amended by the adding the
              words "including, for the avoidance of doubt, the Credit Support
              Annex" after the words "Master Agreement".

       (ii)   Change of Account. Section 2(b) is hereby amended by the addition
              of the following after the word "delivery" in the first line
              thereof:

              "to another account in the same legal and tax jurisdiction as the
              original account".

       (iv)   Representations. Section 3 is hereby amended by adding at the end
              thereof the following subsection (g):

              "(g) Relationship Between Parties.

                     (1)    Non-Reliance. Party A has made its own independent
                            decisions to enter into this Transaction and as to
                            whether this Transaction is appropriate or proper
                            for it based upon its own judgment and upon advice
                            from such advisors as it has deemed necessary. The
                            Securities Administrator is acting, not individually
                            or personally, but as Securities Administrator on
                            behalf of the Trust and has been directed pursuant
                            to the Base Agreement to enter into this Agreement
                            on behalf of the Trust, which has made its own
                            independent decisions to enter into this Transaction
                            and as to whether this Transaction is appropriate or
                            proper for it based upon its own judgment and upon
                            advice from such advisors as it has deemed
                            necessary. Each party is not relying on any
                            communication (written or oral) of the other party
                            as investment advice or as a recommendation to enter
                            into this Transaction; it being understood that
                            information and explanations related to the terms
                            and conditions of this Transaction shall not be
                            considered investment advice or a recommendation to
                            enter into this Transaction. Further, such party has
                            not received from the other party any assurance or
                            guarantee as to the expected results of this
                            Transaction.

                     (2)    Assessment and Understanding. It is capable of
                            assessing the merits of and understanding (on its
                            own behalf or through independent professional
                            advice), and understands and accepts, the terms,
                            conditions and risks of that Transaction. It is also
                            capable of assuming, and assumes, the risks of that
                            Transaction.

                     (3)    Purpose. It is entering into the Transaction for the
                            purposes of managing its borrowings or investments,
                            hedging its underlying assets or liabilities or in
                            connection with a line of business.

                     (4)    Status of Parties. The other party is not acting as
                            fiduciary for or advisor to it in respect of the
                            Transaction.

                     (5)    Eligible Contract Participant. It is an "eligible
                            contract participant" as defined in Section 1(a)(12)
                            of the Commodity Exchange Act, as amended."

       (v)    Transfer to Avoid Termination Event. Section 6(b)(ii) is hereby
              amended by deleting the words "or if a Tax Event Upon Merger
              occurs and the Burdened Party is the Affected Party."

       (vi)   Jurisdiction. Section 13(b) is hereby amended by: (i) deleting in
              the second line of subparagraph (i) thereof the word "non-" and
              (ii) deleting the final paragraph thereof.

(c)    Additional Termination Events. The following Additional Termination
       Events will apply:

       (i)    First Rating Trigger Collateral. If (A) it is not the case that a
              Moody's Second Trigger Ratings Event has occurred and been
              continuing for 30 or more Local Business Days and (B) Party A has
              failed to comply with or perform any obligation to be complied
              with or performed by Party A in accordance with the Credit Support
              Annex, then an Additional Termination Event shall have occurred
              with respect to Party A and Party A shall be the sole Affected
              Party with respect to such Additional Termination Event.

       (ii)   Second Rating Trigger Replacement. If (A) a Required Ratings
              Downgrade Event has occurred and been continuing for 30 or more
              Local Business Days and (B) (i) at least one Eligible Replacement
              has made a Firm Offer to be the transferee of all of Party A's
              rights and obligations under this Agreement (and such Firm Offer
              remains an offer that will become legally binding upon such
              Eligible Replacement upon acceptance by the offeree) and/or (ii)
              an Eligible Guarantor has made a Firm Offer to provide an Eligible
              Guarantee (and such Firm Offer remains an offer that will become
              legally binding upon such Eligible Guarantor immediately upon
              acceptance by the offeree), then an Additional Termination Event
              shall have occurred with respect to Party A and Party A shall be
              the sole Affected Party with respect to such Additional
              Termination Event.

       (iii)  Amendment of Base Agreement. If, without the prior written consent
              of Party A where such consent is required under the Base
              Agreement, an amendment is made to the Base Agreement (excluding,
              for the avoidance of doubt, any amendment to the Base Agreement
              that is entered into solely for the purpose of appointing a
              successor servicer, master servicer, securities administrator,
              trustee or other service provider) under this Agreement, an
              Additional Termination Event shall have occurred with respect to
              Party B and Party B shall be the sole Affected Party with respect
              to such Additional Termination Event.

       (iv)   Termination of Trust/ Securitization Unwind. If the Trust is
              terminated pursuant to the Base Agreement and all rated
              certificates have been paid in accordance with the terms of the
              Base Agreement or if a Securitization Unwind (as hereinafter
              defined) occurs, an Additional Termination Event shall have
              occurred with respect to Party B and Party B shall be the sole
              Affected Party with respect to such Additional Termination Event.
              As used herein, "Securitization Unwind" means notice of the
              requisite amount of a party's intention to exercise its option to
              purchase the underlying mortgage loans pursuant the Base Agreement
              is given by the Trustee or the Securities Administrator to
              certificateholders or noteholders, as applicable, pursuant to the
              Base Agreement.

       (v)    Regulation AB.

              (A) If (1) the Depositor still has a reporting obligation with
              respect to this Transaction pursuant to Regulation AB (as defined
              below) and (2) Party A has not, within 30 days after receipt of a
              10% Disclosure Request (as defined below) complied with the
              provisions set forth in clauses (ii) and (iii) of Part 5(q) below
              (provided that if the significance percentage is 10% or more and
              less than 20% when the 10% Disclosure Request is made or reaches
              10% after a 10% Disclosure Request has been made to Party A, Party
              A must comply with the provisions set forth in clauses (ii) and
              (iii) of Part 5(q) below within 3 calendar days of Party A being
              informed of the significance percentage reaching 10% or more),
              then an Additional Termination Event shall have occurred with
              respect to Party A and Party A shall be the sole Affected Party
              with respect to such Additional Termination Event.

              (B) If (1) the Depositor still has a reporting obligation with
              respect to this Transaction pursuant to Regulation AB and (2)
              Party A has not, within 30 days after receipt of a 20% Disclosure
              Request (as defined below) complied with the provisions set forth
              in clauses (iv) and (v) of Part 5(q) below (provided that if the
              significance percentage is 20% or more when the 20% Disclosure
              Request is made or reaches 20% after a 20% Disclosure Request has
              been made to Party A, Party A must comply with the provisions set
              forth in clauses (iv) and (v) of Part 5(q) below within 3 calendar
              days of Party A being informed of the significance percentage
              reaching 20% or more), then an Additional Termination Event shall
              have occurred with respect to Party A and Party A shall be the
              sole Affected Party with respect to such Additional Termination
              Event.

(d)    Required Ratings Downgrade Event. In the event that no Relevant Entity
       has credit ratings at least equal to the Required Ratings Threshold of
       each relevant Swap Rating Agency (such event, a "Required Ratings
       Downgrade Event"), then Party A shall, as soon as reasonably practicable
       and so long as a Required Ratings Downgrade Event is in effect, at its
       own expense, use commercially reasonable efforts to procure either (A) a
       Permitted Transfer or (B) an Eligible Guarantee from an Eligible
       Guarantor.

(e)    Transfers.

       (i)    Section 7 is hereby amended to read in its entirety as follows:

              "Subject to Section 6(b)(ii), neither Party A nor Party B is
              permitted to assign, novate or transfer (whether by way of
              security or otherwise) as a whole or in part any of its rights,
              obligations or interests under the Agreement or any Transaction
              without (a) the prior written consent of the other party and (b)
              satisfaction of the Rating Agency Condition, except that:

              (a)    a party may make such a transfer of this Agreement pursuant
                     to a consolidation or amalgamation with, or merger with or
                     into, or transfer of all or substantially all its assets
                     to, another entity (but without prejudice to any other
                     right or remedy under this Agreement);

              (b)    a party may make such a transfer of all or any part of its
                     interest in any amount payable to it from a Defaulting
                     Party under Section 6(e); and

              (c)    Party A may transfer or assign this Agreement to any
                     Person, including, without limitation, another of Party A's
                     offices, branches or affiliates (any such Person, office,
                     branch or affiliate, a "Transferee") on at least five
                     Business Days' prior written notice to Party B and the
                     Securities Administrator; provided that, with respect to
                     this clause (c), (A) as of the date of such transfer the
                     Transferee will not be required to withhold or deduct on
                     account of a Tax from any payments under this Agreement
                     unless the Transferee will be required to make payments of
                     additional amounts pursuant to Section 2(d)(i)(4) of this
                     Agreement in respect of such Tax (B) a Termination Event or
                     Event of Default does not occur under this Agreement as a
                     result of such transfer; (C) such notice is accompanied by
                     a written instrument pursuant to which the Transferee
                     acquires and assumes the rights and obligations of Party A
                     so transferred; (D) Party A will be responsible for any
                     costs or expenses incurred in connection with such transfer
                     and (E) Party A obtains in respect of such transfer a
                     written acknowledgement of satisfaction of the Rating
                     Agency Condition (except for Moody's). Party B will execute
                     such documentation as is reasonably deemed necessary by
                     Party A for the effectuation of any such transfer."

       (ii)   If an Eligible Replacement has made a Firm Offer (which remains an
              offer that will become legally binding upon acceptance by Party B)
              to be the transferee pursuant to a Permitted Transfer, Party B
              shall, at Party A's written request and at Party A's expense, take
              any reasonable steps required to be taken by Party B to effect
              such transfer.

       (iii)  Upon any transfer of this Agreement, each of the transferee and
              the transferor must be a "dealer in notional principal contracts"
              for purposes of Treasury regulations section 1.1001-4(a). For the
              avoidance of doubt, the Securities Administrator on behalf of
              Party B is not obligated to determine whether each of the
              transferee and the transferor are such "dealers in notional
              principal contracts."

(f)    Non-Recourse. Party A acknowledges and agree that, notwithstanding any
       provision in this Agreement to the contrary, the obligations of Party B
       hereunder are limited recourse obligations of Party B, payable solely
       from the Trust and the proceeds thereof, in accordance with the priority
       of payments and other terms of the Base Agreement and that Party A will
       not have any recourse to any of the directors, officers, employees,
       shareholders or affiliates of Party B with respect to any claims, losses,
       damages, liabilities, indemnities or other obligations in connection with
       any transactions contemplated hereby. In the event that the Trust and the
       proceeds thereof, should be insufficient to satisfy all claims
       outstanding and following the realization of the account held by the
       Trust and the proceeds thereof, any claims against or obligations of
       Party B under the ISDA Master Agreement or any other confirmation
       thereunder still outstanding shall be extinguished and thereafter not
       revive. The Securities Administrator shall not have liability for any
       failure or delay in making a payment hereunder to Party A due to any
       failure or delay in receiving amounts in the account held by the Trust
       from the Trust created pursuant to the Base Agreement. This provision
       will survive the termination of this Agreement.

(g)    Rating Agency Notifications. Notwithstanding any other provision of this
       Agreement, no Early Termination Date shall be effectively designated
       hereunder by Party B and no transfer of any rights or obligations under
       this Agreement shall be made by either party unless each Swap Rating
       Agency has been given prior written notice of such designation or
       transfer.

(h)    No Set-off. Except as expressly provided for in Section 2(c), Section 6
       or Part 1(f)(i)(D) hereof, and notwithstanding any other provision of
       this Agreement or any other existing or future agreement, each party
       irrevocably waives any and all rights it may have to set off, net, recoup
       or otherwise withhold or suspend or condition payment or performance of
       any obligation between it and the other party hereunder against any
       obligation between it and the other party under any other agreements.
       Section 6(e) shall be amended by deleting the following sentence: "The
       amount, if any, payable in respect of an Early Termination Date and
       determined pursuant to this Section will be subject to any Set-off.".

(i)    Amendment. Notwithstanding any provision to the contrary in this
       Agreement, no amendment of either this Agreement or any Transaction under
       this Agreement shall be permitted by either party unless each of the Swap
       Rating Agencies has been provided prior written notice of the same and
       each relevant Swap Rating Agency (other than Moody's) confirms in writing
       (including by facsimile transmission) that it will not downgrade,
       withdraw or otherwise modify its then-current ratings of the
       Certificates.

(j)    Notice of Certain Events or Circumstances. Each Party agrees, upon
       learning of the occurrence or existence of any event or condition that
       constitutes (or that with the giving of notice or passage of time or both
       would constitute) an Event of Default or Termination Event with respect
       to such party, promptly to give the other Party and to each Swap Rating
       Agency notice of such event or condition; provided that failure to
       provide notice of such event or condition pursuant to this Part 5(j)
       shall not constitute an Event of Default or a Termination Event.

(k)    Proceedings. No Relevant Entity shall institute against, or cause any
       other person to institute against, or join any other person in
       instituting against Party B, the Trust, or the trust formed pursuant to
       the Base Agreement, in any bankruptcy, reorganization, arrangement,
       insolvency or liquidation proceedings or other proceedings under any
       federal or state bankruptcy or similar law for a period of one year (or,
       if longer, the applicable preference period) and one day following
       payment in full of the Certificates; provided, however, that nothing will
       preclude, or be deemed to stop, Party A (i) from taking any action prior
       to the expiration of the aforementioned one year and one day period, or
       if longer the applicable preference period then in effect, in (A) any
       case or proceeding voluntarily filed or commenced by Party B or (B) any
       involuntary insolvency proceeding filed or commenced by a Person other
       than Party A, or (ii) from commencing against Party B or any of the
       Collateral any legal action which is not a bankruptcy, reorganization,
       arrangement, insolvency, moratorium, liquidation or similar proceeding.
       This provision will survive the termination of this Agreement.

(l)    Securities Administrator Liability Limitations. It is expressly
       understood and agreed by the parties hereto that (a) this Agreement is
       executed by Wells Fargo Bank, National Association ("Wells Fargo") not in
       its individual capacity, but solely as Securities Administrator under the
       Base Agreement in the exercise of the powers and authority conferred and
       invested in it thereunder; (b) Wells Fargo has been directed pursuant to
       the Base Agreement to enter into this Agreement and to perform its
       obligations hereunder; (c) each of the representations, undertakings and
       agreements herein made on behalf of the Trust is made and intended not as
       personal representations of Wells Fargo but is made and intended for the
       purpose of binding only the Trust; and (d) under no circumstances shall
       Wells Fargo in its individual capacity be personally liable for any
       payments hereunder or for the breach or failure of any obligation,
       representation, warranty or covenant made or undertaken under this
       Agreement.

(m)    Severability. If any term, provision, covenant, or condition of this
       Agreement, or the application thereof to any party or circumstance, shall
       be held to be invalid or unenforceable (in whole or in part) in any
       respect, the remaining terms, provisions, covenants, and conditions
       hereof shall continue in full force and effect as if this Agreement had
       been executed with the invalid or unenforceable portion eliminated, so
       long as this Agreement as so modified continues to express, without
       material change, the original intentions of the parties as to the subject
       matter of this Agreement and the deletion of such portion of this
       Agreement will not substantially impair the respective benefits or
       expectations of the parties; provided, however, that this severability
       provision shall not be applicable if any provision of Section 2, 5, 6, or
       13 (or any definition or provision in Section 14 to the extent it relates
       to, or is used in or in connection with any such Section) shall be so
       held to be invalid or unenforceable.

       The parties shall endeavor to engage in good faith negotiations to
       replace any invalid or unenforceable term, provision, covenant or
       condition with a valid or enforceable term, provision, covenant or
       condition, the economic effect of which comes as close as possible to
       that of the invalid or unenforceable term, provision, covenant or
       condition.

(n)    Consent to Recording. Each party hereto consents to the monitoring or
       recording, at any time and from time to time, by the other party of any
       and all communications between trading, marketing, and operations
       personnel of the parties and their Affiliates, waives any further notice
       of such monitoring or recording, and agrees to notify such personnel of
       such monitoring or recording.

(o)    Waiver of Jury Trial. Each party waives any right it may have to a trial
       by jury in respect of any in respect of any suit, action or proceeding
       relating to this Agreement or any Credit Support Document.

(p)    Regarding Party A. Party B acknowledges and agrees that Party A, in its
       capacity as swap provider, has had and will have no involvement in and,
       accordingly Party A accepts no responsibility for: (i) the establishment,
       structure, or choice of assets of Party B; (ii) the selection of any
       person performing services for or acting on behalf of Party B; (iii) the
       selection of Party A as the Counterparty; (iv) the terms of the
       Certificates; (v) the preparation of or passing on the disclosure and
       other information (other than disclosure and information furnished by
       Party A) contained in any offering document for the Certificates, the
       Base Agreement, or any other agreements or documents used by Party B or
       any other party in connection with the marketing and sale of the
       Certificates; (vi) the ongoing operations and administration of Party B,
       including the furnishing of any information to Party B which is not
       specifically required under this Agreement; or (vii) any other aspect of
       Party B's existence.

(q)    Compliance with Regulation AB

       (i)    Party A acknowledges that for so long as there are reporting
              obligations with respect to this Transaction under Regulation AB,
              the Depositor, acting on behalf of the Issuing Entity, is required
              under Regulation AB under the Securities Act of 1933, as amended,
              and the Securities Exchange Act of 1934, as amended ("Regulation
              AB"), to disclose certain information set forth in Regulation AB
              regarding Party A or its group of affiliated entities, if
              applicable, depending on the aggregate "significance percentage"
              of this Agreement and any other derivative contracts between Party
              A or its group of affiliated entities, if applicable, and Party B,
              as calculated from time to time in accordance with Item 1115 of
              Regulation AB.

       (ii)   If the Depositor determines, reasonably and in good faith, that
              the significance percentage of this Agreement (and any other
              derivative contracts between Party A or its group of affiliated
              entities, if applicable, and Party B) has increased to eight (8)
              percent or more but less than eighteen (18) percent, then the
              Depositor may request on the date of such determination (or, if
              such date of determination is not a Business Day, the immediately
              following Business Day) from Party A the same information set
              forth in Item 1115(b)(1) of Regulation AB that would have been
              required if the significance percentage had in fact increased to
              ten (10) percent, along with any necessary auditors' consent (such
              request, a "10% Disclosure Request" and such requested
              information, subject to the last sentence of this paragraph, is
              the "10% Financial Disclosure"). The Depositor shall provide Party
              A with the calculations and any other information reasonably
              requested by Party A with respect to the Depositor's determination
              that led to the 10% Disclosure Request. The parties hereto further
              agree that the 10% Financial Disclosure provided to meet the 10%
              Disclosure Request may be, solely at Party A's option, either the
              information set forth in Item 1115(b)(1) or Item 1115(b)(2) of
              Regulation AB.

       (iii)  Upon the occurrence of a 10% Disclosure Request, Party A, at its
              own expense, shall (i) provide the Depositor with the 10%
              Financial Disclosure, (ii) subject to Rating Agency Confirmation,
              secure another entity to replace Party A as party to this
              Agreement on terms substantially similar to this Agreement which
              entity is able to (A) provide the 10% Financial Disclosure and (B)
              provide an indemnity to the Depositor, reasonably satisfactory to
              the Depositor, in relation to the 10% Financial Disclosure or
              (iii) subject to Rating Agency Confirmation, obtain a guaranty of
              Party A's obligations under this Agreement from an affiliate of
              Party A that is able to (A) provide the 10% Financial Disclosure,
              such that disclosure provided in respect of the affiliate will, in
              the judgment of counsel to the Depositor, satisfy any disclosure
              requirements applicable to Party A, and cause such affiliate to
              provide 10% Financial Disclosure and (B) provide an indemnity to
              the Depositor, reasonably satisfactory to the Depositor, in
              relation to the 10% Financial Disclosure. Any such 10% Financial
              Disclosure provided pursuant to this paragraph (iii) shall be in a
              form suitable for conversion to the format required for filing by
              the Depositor with the Securities and Exchange Commission via the
              Electronic Data Gathering and Retrieval System (EDGAR). If
              permitted by Regulation AB, any required 10% Financial Disclosure
              may be provided by incorporation by reference from reports filed
              pursuant to the Securities Exchange Act.

       (iv)   If the Depositor determines, reasonably and in good faith, that
              the significance percentage of this Agreement (and any other
              derivative contracts between Party A or its group of affiliated
              entities, if applicable, and Party B) has increased to eighteen
              (18) percent or more, then the Depositor may request on the date
              of such determination (or, if such date of determination is not a
              Business Day, the immediately following Business Day) from Party A
              the same information set forth in Item 1115(b)(2) of Regulation AB
              that would have been required if the significance percentage had
              in fact increased to twenty (20) percent, along with any necessary
              auditors consent (such request, a "20% Disclosure Request" and
              such requested information is the "20% Financial Disclosure").
              Party B or the Depositor shall provide Party A with the
              calculations and any other information reasonably requested by
              Party A with respect to the Depositor's determination that led to
              the 20% Disclosure Request.

       (v)    Upon the occurrence of a 20% Disclosure Request, Party A, at its
              own expense, shall (i) provide the Depositor with the 20%
              Financial Disclosure, (ii) subject to Rating Agency Confirmation,
              secure another entity to replace Party A as party to this
              Agreement on terms substantially similar to this Agreement which
              entity is able to (A) provide the 20% Financial Disclosure and (B)
              provide an indemnity to the Depositor, reasonably satisfactory to
              the Depositor, in relation to the 20% Financial Disclosure or
              (iii) subject to Rating Agency Confirmation, obtain a guaranty of
              Party A's obligations under this Agreement from an affiliate of
              Party A that is able to (A) provide the 20% Financial Disclosure,
              such that disclosure provided in respect of the affiliate will, in
              the judgment of counsel to the Depositor, satisfy any disclosure
              requirements applicable to Party A, and cause such affiliate to
              provide 20% Financial Disclosure and (B) provide an indemnity to
              the Depositor, reasonably satisfactory to the Depositor, in
              relation to the 20% Financial Disclosure. Any such 20% Financial
              Disclosure provided pursuant to this paragraph (v) shall be in a
              form suitable for conversion to the format required for filing by
              the Depositor with the Securities and Exchange Commission via the
              Electronic Data Gathering and Retrieval System (EDGAR). If
              permitted by Regulation AB, any required 20% Financial Disclosure
              may be provided by incorporation by reference from reports filed
              pursuant to the Securities Exchange Act.

(r)    Additional Definitions.

       Capitalized terms used herein and not otherwise defined herein shall have
       the meanings assigned to such terms in the Base Agreement. In addition,
       as used in this Agreement, the following terms shall have the meanings
       set forth below, unless the context clearly requires otherwise:

              "Approved Ratings Threshold" means each of the Moody's First
              Trigger Ratings Threshold and the Fitch First Trigger Ratings
              Threshold.

              "Approved Replacement" means, with respect to a Market Quotation,
              an entity making such Market Quotation, which entity would satisfy
              conditions (a), (b), (c) and (e) of the definition of Permitted
              Transfer if such entity were a Transferee, as defined in the
              definition of Permitted Transfer.

              "Derivative Provider Trigger Event" means (i) an Event of Default
              with respect to which Party A is a Defaulting Party, (ii) a
              Termination Event (other than Illegality or Tax Event) with
              respect to which Party A is the sole Affected Party or (iii) an
              Additional Termination Event with respect to which Party A is the
              sole Affected Party.

              "Eligible Guarantee" means an unconditional and irrevocable
              guarantee of all present and future obligations (for the avoidance
              of doubt, not limited to payment obligations) of Party A or an
              Eligible Replacement to Party B under this Agreement that is
              provided by an Eligible Guarantor as principal debtor rather than
              surety and that is directly enforceable by Party B, the form and
              substance of which guarantee are subject to the Rating Agency
              Condition, and either (A) a law firm has given a legal opinion
              confirming that none of the guarantor's payments to Party B under
              such guarantee will be subject to Tax collected by withholding or
              (B) such guarantee provides that, in the event that any of such
              guarantor's payments to Party B are subject to Tax collected by
              withholding, such guarantor is required to pay such additional
              amount as is necessary to ensure that the net amount actually
              received by Party B (free and clear of any Tax collected by
              withholding) will equal the full amount Party B would have
              received had no such withholding been required.

              "Eligible Guarantor" means an entity that (A) has credit ratings
              at least equal to the Approved Ratings Threshold or (B) has credit
              ratings at least equal to the Required Ratings Threshold,
              provided, for the avoidance of doubt, that an Eligible Guarantee
              of an Eligible Guarantor with credit ratings below the Approved
              Ratings Threshold will not cause a Collateral Event (as defined in
              the Credit Support Annex) not to occur or continue.

              "Eligible Replacement" means an entity (A) that has credit ratings
              at least equal to the Approved Ratings Threshold, (B) has credit
              ratings at least equal to the Required Ratings Threshold,
              provided, for the avoidance of doubt, that an Eligible Guarantee
              of an Eligible Guarantor with credit ratings below the Approved
              Ratings Threshold will not cause a Collateral Event (as defined in
              the Credit Support Annex) not to occur or continue, or (C) the
              present and future obligations (for the avoidance of doubt, not
              limited to payment obligations) of which entity to Party B under
              this Agreement (or any replacement agreement, as applicable) are
              guaranteed pursuant to an Eligible Guarantee provided by an
              Eligible Guarantor.

              "Firm Offer" means (A) with respect to an Eligible Replacement, a
              quotation from such Eligible Replacement (i) in an amount equal to
              the actual amount payable by or to Party B in consideration of an
              agreement between Party B and such Eligible Replacement to replace
              Party A as the counterparty to this Agreement by way of novation
              or, if such novation is not possible, an agreement between Party B
              and such Eligible Replacement to enter into a Replacement
              Transaction (assuming that all Transactions hereunder become
              Terminated Transactions), and (ii) that constitutes an offer by
              such Eligible Replacement to replace Party A as the counterparty
              to this Agreement or enter a Replacement Transaction that will
              become legally binding upon such Eligible Replacement upon
              acceptance by Party B, and (B) with respect to an Eligible
              Guarantor, an offer by such Eligible Guarantor to provide an
              Eligible Guarantee that will become legally binding upon such
              Eligible Guarantor upon acceptance by the offeree.

              "Fitch" means Fitch Ratings Ltd., or any successor thereto.

              "Fitch First Trigger Ratings Threshold" means, with respect to
              Party A, the guarantor under an Eligible Guarantee or an Eligible
              Replacement, a long-term unsecured and unsubordinated debt rating
              from Fitch of "A" and a short-term unsecured and unsubordinated
              debt rating from Fitch of "F1".

              "Fitch Second Trigger Ratings Threshold" means, with respect to
              Party A, the guarantor under an Eligible Guarantee or an Eligible
              Replacement, a long-term unsecured and unsubordinated debt rating
              from Fitch of "BBB-" or a short-term unsecured and unsubordinated
              debt rating from Fitch of "F3", if applicable.

              "Moody's" means Moody's Investors Service, Inc., or any successor
              thereto.

              "Moody's First Trigger Ratings Threshold" means, with respect to
              Party A, the guarantor under an Eligible Guarantee or an Eligible
              Replacement, (i) if such entity has a short-term unsecured and
              unsubordinated debt rating from Moody's, a long-term unsecured and
              unsubordinated debt rating or counterparty rating from Moody's of
              "A2" and a short-term unsecured and unsubordinated debt rating
              from Moody's of "Prime-1", or (ii) if such entity does not have a
              short-term unsecured and unsubordinated debt rating from Moody's,
              a long-term unsecured and unsubordinated debt rating or
              counterparty rating from Moody's of "A1".

              "Moody's Second Trigger Ratings Event" means that no Relevant
              Entity has credit ratings from Moody's at least equal to the
              Moody's Second Trigger Rating Threshold.

              "Moody's Second Trigger Ratings Threshold" means, with respect to
              Party A, the guarantor under an Eligible Guarantee or an Eligible
              Replacement, (i) if such entity has a short-term unsecured and
              unsubordinated debt rating from Moody's, a long-term unsecured and
              unsubordinated debt rating or counterparty rating from Moody's of
              "A3" and a short-term unsecured and unsubordinated debt rating
              from Moody's of "Prime-2", or (ii) if such entity does not have a
              short-term unsecured and unsubordinated debt rating from Moody's,
              a long-term unsecured and unsubordinated debt rating or
              counterparty rating from Moody's of "A3".

              "Permitted Transfer" means a transfer by novation by Party A to a
              transferee (the "Transferee") of all, but not less than all, of
              Party A's rights, liabilities, duties and obligations under this
              Agreement, with respect to which transfer each of the following
              conditions is satisfied: (a) the Transferee is an Eligible
              Replacement that is a recognized dealer in interest rate swaps,
              (b) as of the date of such transfer the Transferee would not be
              required to withhold or deduct on account of Tax from any payments
              under this Agreement or would be required to gross up for such Tax
              under Section 2(d)(i)(4), (c) an Event of Default or Termination
              Event would not occur as a result of such transfer, (d) Party B
              has consented in writing to the transfer, such consent not to be
              unreasonably withheld, (e) the transfer would not give rise to a
              taxable event or any other adverse Tax consequences to Party B or
              its interest holders, (f) pursuant to a written instrument (the
              "Transfer Agreement"), the Transferee acquires and assumes all
              rights and obligations of Party A under the Agreement and the
              relevant Transaction, (g) such Transfer Agreement is effective to
              transfer to the Transferee all, but not less than all, of Party
              A's rights and obligations under the Agreement and all relevant
              Transactions; (h) Party A will be responsible for any costs or
              expenses incurred in connection with such transfer (including any
              replacement cost of entering into a replacement transaction); (i)
              Moody's has been given prior written notice of such transfer and
              the Rating Agency Condition (other than with respect to Moody's)
              is satisfied; and (j) such transfer otherwise complies with the
              terms of the Base Agreement.

              "Rating Agency Condition" means, with respect to any particular
              proposed act or omission to act hereunder that the party acting or
              failing to act must consult with each of the relevant Swap Rating
              Agencies and receive from each such Swap Rating Agency a prior
              written confirmation that the proposed action or inaction would
              not cause a downgrade or withdrawal of the then-current rating of
              any Certificates; provided, however, with respect to Moody's, the
              Rating Agency Condition will be satisfied upon the delivery of
              written notice to Moody's of such proposed act or omission to act
              where consultation with each of the relevant Swap Rating Agencies
              is required.

              "Relevant Entity" means Party A and, to the extent applicable, a
              guarantor under an Eligible Guarantee.

              "Replacement Transaction" means, with respect to any Terminated
              Transaction or group of Terminated Transactions, a transaction or
              group of transactions that (i) would have the effect of preserving
              for Party B the economic equivalent of any payment or delivery
              (whether the underlying obligation was absolute or contingent and
              assuming the satisfaction of each applicable condition precedent)
              by the parties under Section 2(a)(i) in respect of such Terminated
              Transaction or group of Terminated Transactions that would, but
              for the occurrence of the relevant Early Termination Date, have
              been required after that Date, and (ii) has terms which are
              substantially the same as this Agreement, including, without
              limitation, rating triggers, Regulation AB compliance, and credit
              support documentation, save for the exclusion of provisions
              relating to Transactions that are not Terminated Transaction.

              "Required Ratings Downgrade Event" shall have the meaning assigned
              thereto in Part 5(d).

              "Required Ratings Threshold" means each of the Moody's Second
              Trigger Ratings Threshold and the Fitch Second Trigger Ratings
              Threshold.

              "Swap Rating Agencies" means, with respect to any date of
              determination, each of Moody's, and Fitch, but only to the extent
              that each such rating agency is then providing a rating for any of
              the certificates issued under the Base Agreement.

                   [Remainder of this page intentionally left blank.]

<PAGE>



The time of dealing will be confirmed by Party A upon written request. Barclays
is regulated by the Financial Services Authority. Barclays is acting for its own
account in respect of this Transaction.

Please confirm that the foregoing correctly sets forth all the terms and
conditions of our agreement with respect to the Transaction by responding within
three (3) Business Days by promptly signing in the space provided below and both
(i) faxing the signed copy to Incoming Transaction Documentation, Barclays
Capital Global OTC Transaction Documentation & Management, Global Operations,
Fax +(44) 20-7773-6810/6857, Tel +(44) 20-7773-6901/6904/6965, and (ii) mailing
the signed copy to Barclays Bank PLC, 5 The North Colonnade, Canary Wharf,
London E14 4BB, Attention of Incoming Transaction Documentation, Barclays
Capital Global OTC Transaction Documentation & Management, Global Operation.
Your failure to respond within such period shall not affect the validity or
enforceability of the Transaction against you. This facsimile shall be the only
documentation in respect of the Transaction and accordingly no hard copy
versions of this Confirmation for this Transaction shall be provided unless
Party B requests such a copy.
<TABLE>
<CAPTION>
<S>                                            <C>

-----------------------------------------------------------------------------------------------
For and on behalf of                           For and on behalf of
BARCLAYS BANK PLC                              Wells Fargo Home Equity Asset-Backed Securities
                                               2007-1 Trust
                                               By: Wells Fargo Bank, National Association,
                                               not individually, but solely as Securities
                                               Administrator under the Base Agreement on
                                               behalf of the Wells Fargo Home Equity
                                               Asset-Backed Securities 2007-1 Trust
-----------------------------------------------------------------------------------------------

 /s/ Shain Kalmanowitz                         /s/ Amy Doyle
Name: Shain Kalmanowitz                        Name: Amy Doyle
Title: Authorized Signatory for Barclays Bank  Title: Vice President
PLC                                            Date: March 30, 2007
Date: March 30, 2007
-----------------------------------------------------------------------------------------------
</TABLE>


Barclays Bank PLC and its Affiliates, including Barclays Capital Inc., may share
with each other information, including non-public credit information, concerning
its clients and prospective clients. If you do not want such information to be
shared, you must write to the Director of Compliance, Barclays Bank PLC, 200
Park Avenue, New York, NY 10166.





<PAGE>


                                   SCHEDULE I

                                             Notional Amount
From and including       To but excluding          (USD)          Fixed Rate
------------------       ----------------    ----------------     ----------
     25-Mar-07               25-Apr-07        503,838,249.14       5.1500%
     25-Apr-07               25-May-07        493,537,042.79       5.1364%
     25-May-07               25-Jun-07        482,798,424.58       5.1228%
     25-Jun-07               25-Jul-07        471,650,080.40       5.1092%
     25-Jul-07               25-Aug-07        460,121,106.07       5.0956%
     25-Aug-07               25-Sep-07        448,241,885.01       5.0820%
     25-Sep-07               25-Oct-07        436,043,957.18       5.0683%
     25-Oct-07               25-Nov-07        423,559,879.70       5.0547%
     25-Nov-07               25-Dec-07        410,823,080.36       5.0411%
     25-Dec-07               25-Jan-08        397,867,991.57       5.0275%
     25-Jan-08               25-Feb-08        384,729,403.61       5.0139%
     25-Feb-08               25-Mar-08        371,442,392.83       5.0003%
     25-Mar-08               25-Apr-08        358,042,665.05       4.9867%
     25-Apr-08               25-May-08        344,568,540.51       4.9731%
     25-May-08               25-Jun-08        331,111,204.05       4.9595%
     25-Jun-08               25-Jul-08        317,744,294.06       4.9459%
     25-Jul-08               25-Aug-08        304,492,505.62       4.9322%
     25-Aug-08               25-Sep-08        291,380,624.23       4.9186%
     25-Sep-08               25-Oct-08        278,436,242.38       4.9050%
     25-Oct-08               25-Nov-08        265,722,722.68       4.8914%
     25-Nov-08               25-Dec-08        253,599,249.90       4.8778%
     25-Dec-08               25-Jan-09        242,038,185.50       4.8642%
     25-Jan-09               25-Feb-09        231,013,449.55       4.8506%
     25-Feb-09               25-Mar-09        220,501,560.98       4.8370%
     25-Mar-09               25-Apr-09        210,490,914.04       4.8234%
     25-Apr-09               25-May-09        200,910,880.52       4.8098%
     25-May-09               25-Jun-09        191,727,532.31       4.7961%
     25-Jun-09               25-Jul-09        182,792,418.26       4.7825%
     25-Jul-09               25-Aug-09        172,617,906.74       4.7689%
     25-Aug-09               25-Sep-09        149,235,005.89       4.7553%
     25-Sep-09               25-Oct-09        129,433,200.31       4.7417%
     25-Oct-09               25-Nov-09        112,648,422.47       4.7281%
     25-Nov-09               25-Dec-09         98,407,102.15       4.7145%
     25-Dec-09               25-Jan-10         86,316,921.89       4.7009%
     25-Jan-10               25-Feb-10         76,118,996.92       4.6873%
     25-Feb-10               25-Mar-10         68,168,814.75       4.6737%
     25-Mar-10               25-Apr-10         61,789,549.78       4.6600%
     25-Apr-10               25-May-10         56,553,932.10       4.6464%
     25-May-10               25-Jun-10         52,177,407.47       4.6328%
     25-Jun-10               25-Jul-10         48,462,656.48       4.6192%
     25-Jul-10               25-Aug-10         45,268,533.36       4.6056%
     25-Aug-10               25-Sep-10         42,491,501.33       4.5920%
     25-Sep-10               25-Oct-10         40,054,105.29       4.5784%
     25-Oct-10               25-Nov-10         37,896,739.52       4.5648%
     25-Nov-10               25-Dec-10         35,973,305.11       4.5512%
     25-Dec-10               25-Jan-11         34,246,942.78       4.5376%
     25-Jan-11               25-Feb-11         32,681,383.62       4.5239%
     25-Feb-11               25-Mar-11         31,190,817.93       4.5103%
     25-Mar-11               25-Apr-11         29,771,477.17       4.4967%
     25-Apr-11               25-May-11         28,419,832.01       4.4831%
     25-May-11               25-Jun-11         27,132,511.47       4.4695%
     25-Jun-11               25-Jul-11         25,906,318.61       4.4559%
     25-Jul-11               25-Aug-11         24,738,222.12       4.4423%
     25-Aug-11               25-Sep-11         23,625,355.31       4.4287%
     25-Sep-11               25-Oct-11         22,565,065.14       4.4151%
     25-Oct-11               25-Nov-11         21,554,663.79       4.4015%
     25-Nov-11               25-Dec-11         20,591,688.94       4.3878%



<PAGE>

                                     Annex A



                                     ISDA(R)
                              CREDIT SUPPORT ANNEX
                             to the Schedule to the
                              ISDA Master Agreement
                       dated as of March 30, 2007 between
      Barclays Bank PLC (hereinafter referred to as "Party A" or "Pledgor")
                                       and
          Wells Fargo Bank, National Association, not individually, but
               solely as securities administrator (the "Securities
            Administrator") for Wells Fargo Home Equity Asset-Backed
         Securities 2007-1 Trust, Home Equity Asset-Backed Certificates,
                           Series 2007-1 (the "Trust")
           (hereinafter referred to as "Party B" or "Secured Party").


This Annex supplements, forms part of, and is subject to, the above-referenced
Agreement, is part of its Schedule and is a Credit Support Document under this
Agreement with respect to each party.

Paragraph 13. Elections and Variables.

(a)     Security Interest for "Obligations". The term "Obligations" as used in
        this Annex includes the following additional obligations:

        With respect to Party A: not applicable.

        With respect to Party B: not applicable.

(b)     Credit Support Obligations.

        (i)     Delivery Amount, Return Amount and Credit Support Amount.

                (A)     "Delivery Amount" has the meaning specified in Paragraph
                        3(a) as amended (I) by deleting the words "upon a demand
                        made by the Secured Party on or promptly following a
                        Valuation Date" and inserting in lieu thereof the words
                        "not later than the close of business on the next Local
                        Business Day following a Valuation Date" and (II) by
                        deleting in its entirety the sentence beginning "Unless
                        otherwise specified in Paragraph 13" and ending "(ii)
                        the Value as of that Valuation Date of all Posted Credit
                        Support held by the Secured Party." and inserting in
                        lieu thereof the following:

                        The "Delivery Amount" applicable to the Pledgor for any
                        Valuation Date will equal the greatest of

                        (1)     the amount by which (a) the Fitch Credit Support
                                Amount for such Valuation Date exceeds (b) the
                                Fitch Value as of such Valuation Date of all
                                Posted Credit Support held by the Secured Party,

                        (2)     the amount by which (a) the Moody's First
                                Trigger Credit Support Amount for such Valuation
                                Date exceeds (b) the Moody's First Trigger Value
                                as of such Valuation Date of all Posted Credit
                                Support held by the Secured Party, and

                        (3)     the amount by which (a) the Moody's Second
                                Trigger Credit Support Amount for such Valuation
                                Date exceeds (b) the Moody's Second Trigger
                                Value as of such Valuation Date of all Posted
                                Credit Support held by the Secured Party.

                (B)     "Return Amount" has the meaning specified in Paragraph
                        3(b) as amended by deleting in its entirety the sentence
                        beginning "Unless otherwise specified in Paragraph 13"
                        and ending "(ii) the Credit Support Amount." and
                        inserting in lieu thereof the following:

                        The "Return Amount" applicable to the Secured Party for
                        any Valuation Date will equal the least of

                        (1)     the amount by which (a) the Fitch Value as of
                                such Valuation Date of all Posted Credit Support
                                held by the Secured Party exceeds (b) the Fitch
                                Credit Support Amount for such Valuation Date,

                        (2)     the amount by which (a) the Moody's First
                                Trigger Value as of such Valuation Date of all
                                Posted Credit Support held by the Secured Party
                                exceeds (b) the Moody's First Trigger Credit
                                Support Amount for such Valuation Date, and

                        (3)     the amount by which (a) the Moody's Second
                                Trigger Value as of such Valuation Date of all
                                Posted Credit Support held by the Secured Party
                                exceeds (b) the Moody's Second Trigger Credit
                                Support Amount for such Valuation Date.

                (C)     "Credit Support Amount" shall not apply. For purposes of
                        calculating any Delivery Amount or Return Amount for any
                        Valuation Date, reference shall be made to the Fitch
                        Credit Support Amount, the Moody's First Trigger Credit
                        Support Amount, or the Moody's Second Trigger Credit
                        Support Amount, in each case for such Valuation Date, as
                        provided in Paragraphs 13(b)(i)(A) and 13(b)(i)(B),
                        above.

        (ii)    Eligible Collateral.

                On any date, the following items will qualify as "Eligible
                Collateral" (for the avoidance of doubt, all Eligible Collateral
                to be denominated in USD):


<PAGE>

                                                      Moody's         Moody's
                                       Fitch      First Trigger   Second Trigger
                                     Valuation      Valuation        Valuation
     Collateral                      Percentage     Percentage       Percentage
     ----------                      ----------     ----------       ----------
(A)     Cash                            100%           100%             100%

(B)  Fixed-rate negotiable debt
     obligations issued by the
     U.S. Treasury Department
     having a remaining maturity        97.5%          100%             100%
     on such date of not more than
     one year

(C)  Fixed-rate negotiable debt
     obligations issued by the
     U.S. Treasury Department
     having a remaining maturity        86.3%          100%             94%
     on such date of more than one
     year but not more than ten
     years

(D)  Fixed-rate negotiable debt
     obligations issued by the
     U.S. Treasury Department
     having a remaining maturity        79.0%          100%             88%
     on such date of more than ten
     years


Notwithstanding the Valuation Percentages set forth in the preceding table, upon
the first Transfer of Eligible Collateral under this Annex, the Pledgor may, at
the Pledgor's expense, agree the Valuation Percentages in relation to (B)
through (D) above with the relevant rating agency (to the extent such rating
agency is providing a rating for the Certificates), and upon such agreement as
evidenced in writing, such Valuation Percentages shall supersede those set forth
in the preceding table.

(iii)   Other Eligible Support.

        The following items will qualify as "Other Eligible Support" for the
        party specified:

        Such Other Eligible Support as the Pledgor may designate; provided, at
        the expense of the Pledgor, the prior written consent of the relevant
        rating agency (to the extent such rating agency is providing a rating
        for the Certificates) shall have been obtained. For the avoidance of
        doubt, there are no items that qualify as Other Eligible Support as of
        the date of this Annex.

(iv)    Threshold.

        (A)     "Independent Amount" means zero with respect to Party A and
                Party B.

        (B)     "Threshold" means, with respect to Party A and any Valuation
                Date, zero if a Collateral Event has occurred and has been
                continuing (x) for at least 30 days or (y) since this Annex was
                executed; otherwise, infinity.

                "Threshold" means, with respect to Party B and any Valuation
                Date, infinity.

        (C)     "Minimum Transfer Amount" means USD 100,000 with respect to
                Party A and Party B; provided, however, with respect to the
                Secured Party at any time when the Secured Party is a Defaulting
                Party, "Minimum Transfer Amount" means zero.

        (D)     Rounding: The Delivery Amount will be rounded up and the Return
                Amount will be rounded down to the nearest multiple of USD
                1,000, respectively.

(c)     Valuation and Timing.

        (i)     "Valuation Agent" means Party A. The Valuation Agent's
                calculations shall be made in accordance with standard market
                practices using commonly accepted third party sources such as
                Bloomberg or Reuters.

        (ii)    "Valuation Date" means each Local Business Day.

        (iii)   "Valuation Time" means the close of business in the city of the
                Valuation Agent on the Local Business Day immediately preceding
                the Valuation Date or date of calculation, as applicable;
                provided that the calculations of Value and Exposure will be
                made as of approximately the same time on the same date.

        (iv)    "Notification Time" means 11:00 a.m., New York time, on a Local
                Business Day.

(d)     Conditions Precedent and Secured Party's Rights and Remedies. The
        following Termination Events will be a "Specified Condition" for the
        party specified (that party being the Affected Party if the Termination
        Event occurs with respect to that party): None.

(e)     Substitution.

        (i)     "Substitution Date" has the meaning specified in Paragraph
                4(d)(ii).

        (ii)    Consent. If specified here as applicable, then the Pledgor must
                obtain the Secured Party's consent for any substitution pursuant
                to Paragraph 4(d): Inapplicable.

(f)     Dispute Resolution.

        (i)     "Resolution Time" means 1:00 p.m. New York time on the Local
                Business Day following the date on which the notice of the
                dispute is given under Paragraph 5.

        (ii)    Value. Notwithstanding anything to the contrary in Paragraph 12,
                for the purpose of Paragraphs 5(i)(C) and 5(ii), the Fitch
                Value, Moody's First Trigger Value, and Moody's Second Trigger
                Value, on any date, of Eligible Collateral will be calculated as
                follows:

                For Eligible Collateral comprised of Cash, the amount of such
                Cash.

                For Eligible Collateral comprising securities, the sum of (A)
                the product of (1)(x) the bid price at the Valuation Time for
                such securities on the principal national securities exchange on
                which such securities are listed, or (y) if such securities are
                not listed on a national securities exchange, the bid price for
                such securities quoted at the Valuation Time by any principal
                market maker for such securities selected by the Valuation
                Agent, or (z) if no such bid price is listed or quoted for such
                date, the bid price listed or quoted (as the case may be) at the
                Valuation Time for the day next preceding such date on which
                such prices were available and (2) the applicable Valuation
                Percentage for such Eligible Collateral, and (B) the accrued
                interest on such securities (except to the extent Transferred to
                the Pledgor pursuant to Paragraph 6(d)(ii) or included in the
                applicable price referred to in the immediately preceding clause
                (A)) as of such date.

        (iii)   Alternative. The provisions of Paragraph 5 will apply; provided,
                that the obligation of the appropriate party to deliver the
                undisputed amount to the other party will not arise prior to the
                time that would otherwise have applied to the Transfer pursuant
                to, or deemed made, under Paragraph 3 if no dispute had arisen.

(g)     Holding and Using Posted Collateral.

        (i)     Eligibility to Hold Posted Collateral; Custodians.

                Party B is not and will not be entitled to hold Posted
                Collateral. Party B's Custodian will be entitled to hold Posted
                Collateral pursuant to Paragraph 6(b); provided that the
                Custodian for Party B shall be the same banking institution that
                acts as Securities Administrator for the Certificates.

                Initially, the Custodian for Party B is: to be advised in
                writing by Party B to Party A.

        (ii)    Use of Posted Collateral. The provisions of Paragraph 6(c) will
                not apply to Party B; therefore, Party B will not have any of
                the rights specified in Paragraph 6(c)(i) or 6 (c)(ii);
                provided, however, that the Securities Administrator shall
                invest Cash Posted Credit Support in such investments as
                designated by Party A, with losses (net of gains) incurred in
                respect of such investments to be for the account of Party A;
                provided, further, that with respect to Posted Collateral in the
                form of securities recorded on a book-entry system, Party B's
                Custodian may register such Posted Collateral in the name of its
                agent and participant in such book-entry system.

(h)     Distributions and Interest Amount.

        (i)     Interest Rate. The "Interest Rate" will be the actual interest
                rate earned on Posted Collateral in the form of Cash pursuant to
                Paragraph 13(g)(ii).

        (ii)    Transfer of Interest Amount. The Transfer of the Interest Amount
                will be made on the second Local Business Day following the end
                of each calendar month and on any other Local Business Day on
                which Posted Collateral in the form of Cash is Transferred to
                the Pledgor pursuant to Paragraph 3(b); provided, however, that
                the obligation of Party B to Transfer any Interest Amount to
                Party A shall be limited to the extent that Party B has earned
                and received such funds and such funds are available to Party B.

        (iii)   Alternative to Interest Amount. The provisions of Paragraph
                6(d)(ii) will apply.

(i)     Additional Representation(s). There are no additional representations by
        either party.

        (j)     Other Eligible Support and Other Posted Support.

                (i)     "Value" with respect to Other Eligible Support and Other
                        Posted Support shall have such meaning as the parties
                        shall agree in writing from time to time pursuant to
                        Paragraph 13(b)(iii).

                (ii)    "Transfer" with respect to Other Eligible Support and
                        Other Posted Support shall have such meaning as the
                        parties shall agree in writing from time to time
                        pursuant to Paragraph 13(b)(iii).

        (k)     Demands and Notices.All demands, specifications and notices
                under this Annex will be made pursuant to the Notices Section of
                this Agreement, except that any demand, specification or notice
                shall be given to or made at the following addresses, or at such
                other address as the relevant party may from time to time
                designate by giving notice (in accordance with the terms of this
                paragraph) to the other party:

       If to Party A:

                5 The North Colonnade
                Canary Wharf
                London  E14 4BB, England
                Attention:    Swaps Documentation
                Facsimile No.:0207-773-6857/6858
                Telephone No.:0207-773-6915/6904

                with a copy to:

                General Counsel's Office
                200 Park Avenue
                New York, NY  10166

                Notices to Party A shall not be deemed effective unless
                delivered to the London address set forth above.

        If to Party B or Party B's Custodian, the address specified for Party B
        pursuant to the Notices Section of this Agreement.

(l)     Address for Transfers. Each Transfer hereunder shall be made to the
        address specified below or to an address specified in writing from time
        to time by the party to which such Transfer will be made.

        For Cash:

        If to Party A:

        Barclays Bank PLC, NY
        ABA #026-002-574
        F/O Barclays Swaps & Options Group NY
        A/C #: 050019228
        REF: Collateral

        For Treasury Securities:
        Bank of NYC/BBPLCLDN
        ABA #021-000-018

        If to Party B:

        For Cash:

        Wells Fargo Bank, National Association
        San Francisco, CA
        ABA No.: 121000248
        Account No.: 3970771416
        Account Name: SAS Clearing
        FFC: 50999803, WFHET 2007-1 Posted Collateral Account

        For Treasury Securities:

        Wells Fargo Bank, National Association
        San Francisco, CA
        ABA No.: 121000248
        Account No.: 50999803, WFHET 2007-1 Posted Collateral Account

(m)     Other Provisions.

        (i)     Collateral Account. The Secured Party shall cause any Custodian
                appointed hereunder to open and maintain a segregated trust
                account and to hold, record and identify all the Posted
                Collateral in such segregated trust account and, subject to
                Paragraph 8(a), such Posted Collateral shall at all times be and
                remain the property of the Pledgor and shall at no time
                constitute the property of, or be commingled with the property
                of, the Secured Party or the Custodian.

        (ii)    Agreement as to Single Secured Party and Single Pledgor. Party A
                and Party B hereby agree that, notwithstanding anything to the
                contrary in this Annex, (a) the term "Secured Party" as used in
                this Annex means only Party B, (b) the term "Pledgor" as used in
                this Annex means only Party A, (c) only Party A makes the pledge
                and grant in Paragraph 2, the acknowledgement in the final
                sentence of Paragraph 8(a) and the representations in Paragraph
                9.

        (iii)   Calculation of Value. Paragraph 4(c) is hereby amended by
                deleting the word "Value" and inserting in lieu thereof "Fitch
                Value, Moody's First Trigger Value, Moody's Second Trigger
                Value". Paragraph 4(d)(ii) is hereby amended by (A) deleting the
                words "a Value" and inserting in lieu thereof "a Fitch Value,
                Moody's First Trigger Value, and Moody's Second Trigger Value"
                and (B) deleting the words "the Value" and inserting in lieu
                thereof "Fitch Value, Moody's First Trigger Value, and Moody's
                Second Trigger Value". Paragraph 5 (flush language) is hereby
                amended by deleting the word "Value" and inserting in lieu
                thereof "Fitch Value, Moody's First Trigger Value, or Moody's
                Second Trigger Value". Paragraph 5(i) (flush language) is hereby
                amended by deleting the word "Value" and inserting in lieu
                thereof "Fitch Value, Moody's First Trigger Value, and Moody's
                Second Trigger Value". Paragraph 5(i)(C) is hereby amended by
                deleting the word "the Value, if" and inserting in lieu thereof
                "any one or more of the Fitch Value, Moody's First Trigger
                Value, or Moody's Second Trigger Value, as may be". Paragraph
                5(ii) is hereby amended by (1) deleting the first instance of
                the words "the Value" and inserting in lieu thereof "any one or
                more of the Fitch Value, Moody's First Trigger Value, or Moody's
                Second Trigger Value" and (2) deleting the second instance of
                the words "the Value" and inserting in lieu thereof "such
                disputed Fitch Value, Moody's First Trigger Value, or Moody's
                Second Trigger Value". Each of Paragraph 8(b)(iv)(B) and
                Paragraph 11(a) is hereby amended by deleting the word "Value"
                and inserting in lieu thereof "least of the Fitch Value, Moody's
                First Trigger Value, and Moody's Second Trigger Value".

        (iv)    Form of Annex. Party A and Party B hereby agree that the text of
                Paragraphs 1 through 12, inclusive, of this Annex is intended to
                be the printed form of ISDA Credit Support Annex (Bilateral Form
                - ISDA Agreements Subject to New York Law Only version) as
                published and copyrighted in 1994 by the International Swaps and
                Derivatives Association, Inc.

        (v)     Events of Default. Paragraph 7 will not apply to cause any Event
                of Default to exist with respect to Party B except that
                Paragraph 7(i) will apply to Party B solely in respect of Party
                B's obligations under Paragraph 3(b) of the Credit Support
                Annex. Notwithstanding anything to the contrary in Paragraph 7,
                any failure by Party A to comply with or perform any obligation
                to be complied with or performed by Party A under the Credit
                Support Annex shall only be an Event of Default if (A) a
                Required Ratings Downgrade Event has occurred and been
                continuing for 30 or more Local Business Days and (B) such
                failure is not remedied on or before the third Local Business
                Day after notice of such failure is given to Party A.

        (vi)    Expenses. Notwithstanding anything to the contrary in Paragraph
                10, the Pledgor will be responsible for, and will reimburse the
                Secured Party for, all transfer and other taxes and other costs
                involved in any Transfer of Eligible Collateral.

        (vii)   Withholding. Paragraph 6(d)(ii) is hereby amended by inserting
                immediately after "the Interest Amount" in the fourth line
                thereof the words "less any applicable withholding taxes."

        (viii)  Additional Definitions. As used in this Annex:

                "Collateral Event" means that no Relevant Entity has credit
                ratings at least equal to the Approved Ratings Threshold.

                "Exposure" has the meaning specified in Paragraph 12, except
                that after the word "Agreement" the words "(assuming, for this
                purpose only, that Part 1(f) of the Schedule is deleted)" shall
                be inserted.

                "Fitch Credit Support Amount" means, for any Valuation Date, the
                excess, if any, of

                (I)     (A)     for any Valuation Date on which a Fitch Rating
                                Threshold Event has occurred and been continuing
                                for at least 30 days, an amount equal to the sum
                                of (1) 100.0% of the Secured Party's Exposure
                                for such Valuation Date and (2) the product of
                                the Fitch Volatility Cushion for each
                                Transaction to which this Annex relates and the
                                Notional Amount of each such Transaction for the
                                Calculation Period which includes such Valuation
                                Date, or

                        (B)     for any other Valuation Date, zero, over

               (II) the Threshold for Party A for such Valuation Date.

               "Fitch Rating Threshold Event" means, on any date, no Relevant
               Entity has credit ratings from Fitch at least equal to the Fitch
               First Trigger Ratings Threshold.

               "Fitch Value" means, on any date and with respect to any Eligible
               Collateral other than Cash, the product of (A) the bid price
               obtained by the Valuation Agent for such Eligible Collateral and
               (B) the Fitch Valuation Percentage for such Eligible Collateral
               set forth in paragraph 13(b)(ii).

               "Fitch Volatility Cushion" means, for any Transaction, the
               related percentage set forth in the following table.
<TABLE>
<CAPTION>

               --------------------------------------------------------------------------------
               The higher of the                  Remaining Weighted Average Maturity
               Fitch credit rating                              (years)
               of (i) Party A and -------------------------------------------------------------
               (ii) the Credit
               Support Provider of
               Party A, if applicable
               --------------------------------------------------------------------------------
                                         1      2       3      4      5       6      7      8
               --------------------------------------------------------------------------------
<S>                                    <C>     <C>    <C>    <C>     <C>    <C>    <C>     <C>
               At least "AA-"          0.8%    1.7%   2.5%   3.3%    4.0%   4.7%   5.3%    5.9%
               --------------------------------------------------------------------------------
               "A+/A"                  0.6%    1.2%   1.8%   2.3%    2.8%   3.3%   3.8%    4.2%
               --------------------------------------------------------------------------------
               "A-/BBB+" or lower      0.5%    1.0%   1.6%   2.0%    2.5%   2.9%   3.3%    3.6%
               --------------------------------------------------------------------------------
               The higher of the
               Fitch credit rating                Remaining Weighted Average Maturity
               of (i) Party A and                               (years)
               (ii) the Credit        ---------------------------------------------------------
               Support Provider of       9      10     11     12      13     14   Greater than
               Party A, if applicable                                             or equal to
                                                                                        15
               --------------------------------------------------------------------------------
               At least "AA-"          6.5%    7.0%   7.5%   8.0%    8.5%   9.0%       9.5%
               --------------------------------------------------------------------------------
               "A+/A"                  4.6%    5.0%   5.3%   5.7%    6.0%   6.4%       6.7%
               --------------------------------------------------------------------------------
               "A-/BBB+" or lower      4.0%    4.3%   4.7%   5.0%    5.3%   5.6%       5.9%
               --------------------------------------------------------------------------------
</TABLE>

               "Local Business Day" means: any day on which (A) commercial banks
               are open for business (including dealings in foreign exchange and
               foreign currency deposits) in London, New York and the location
               of the Custodian, and (B) in relation to a Transfer of Eligible
               Collateral, any day on which the clearance system agreed between
               the parties for the delivery of Eligible Collateral is open for
               acceptance and execution of settlement instructions (or in the
               case of a Transfer of Cash or other Eligible Collateral for which
               delivery is contemplated by other means a day on which commercial
               banks are open for business (including dealings in foreign
               exchange and foreign deposits) in New York and such other places
               as the parties shall agree.

               "Moody's First Trigger Additional Collateralized Amount" means,
               with respect to any Transaction and any Valuation Date, the
               product of the applicable Moody's First Trigger Factor set forth
               in Table 1 and the Notional Amount for such Transaction for the
               Calculation Period which includes such Valuation Date.

               "Moody's First Trigger Event" means that no Relevant Entity has
               credit ratings from Moody's at least equal to the Moody's First
               Trigger Ratings Threshold.

                "Moody's First Trigger Credit Support Amount" means, for any
                Valuation Date, the excess, if any, of

               (I)    (A)       for any Valuation Date on which (I) a Moody's
                                First Trigger Event has occurred and has been
                                continuing (x) for at least 30 Local Business
                                Days or (y) since this Annex was executed and
                                (II) it is not the case that a Moody's Second
                                Trigger Ratings Event has occurred and been
                                continuing for at least 30 Local Business Days,
                                an amount equal to the greater of (a) zero and
                                (b) sum of (i) the Secured Party's Exposure for
                                such Valuation Date and (ii) the aggregate of
                                Moody's First Trigger Additional Collateralized
                                Amounts for all Transactions; or

                        (B)     for any other Valuation Date, zero, over

               (II) the Threshold for Party A for such Valuation Date.

               "Moody's First Trigger Value" means, on any date and with respect
               to any Eligible Collateral other than Cash, the bid price
               obtained by the Valuation Agent multiplied by the Moody's First
               Trigger Valuation Percentage for such Eligible Collateral set
               forth in Paragraph 13(b)(ii).

               "Moody's Second Trigger Additional Collateralized Amount" means,
               with respect to any Transaction and any Valuation Date, (A) if
               such Transaction is not a Transaction-Specific Hedge, the product
               of the applicable Moody's Second Trigger Factor set forth in
               Table 2 and the Notional Amount for such Transaction for the
               Calculation Period which includes such Valuation Date and (B) if
               such Transaction is a Transaction-Specific Hedge, the product of
               the applicable Moody's Second Trigger Factor set forth in Table 3
               and the Notional Amount for such Transaction for the Calculation
               Period which includes such Valuation Date.

               "Moody's Second Trigger Ratings Event" means that no Relevant
               Entity has credit ratings from Moody's at least equal to the
               Moody's Second Trigger Ratings Threshold.

                "Moody's Second Trigger Credit Support Amount" means, for any
                Valuation Date, the excess, if any, of

               (I)    (A)       for any Valuation Date on which it is the case
                                that a Moody's Second Trigger Ratings Event has
                                occurred and been continuing for at least 30
                                Local Business Days, an amount equal to the
                                greatest of (a) zero, (b) the sum of the amounts
                                of the next payment due to be paid by Party A
                                under each Transaction to which this Annex
                                relates, and (c) the sum of (x) the Secured
                                Party's Exposure for such Valuation Date and (y)
                                the aggregate of Moody's Second Trigger
                                Additional Collateralized Amounts for all
                                Transactions; or

                        (B)     for any other Valuation Date, zero, over

               (II) the Threshold for Party A for such Valuation Date.

               "Moody's Second Trigger Value" means, on any date and with
               respect to any Eligible Collateral other than Cash, the bid price
               obtained by the Valuation Agent multiplied by the Moody's Second
               Trigger Valuation Percentage for such Eligible Collateral set
               forth in Paragraph 13(b)(ii).

               "Transaction-Specific Hedge" means any Transaction that is a cap,
               floor or swaption, or a Transaction in respect of which (x) the
               notional amount is "balance guaranteed" or (y) the notional
               amount for any Calculation Period otherwise is not a specific
               dollar amount that is fixed at the inception of the Transaction.

               "Valuation Percentage" shall mean, for purposes of determining
               the Fitch Value, Moody's First Trigger Value, or Moody's Second
               Trigger Value with respect to any Eligible Collateral or Posted
               Collateral, the applicable Fitch Valuation Percentage, Moody's
               First Trigger Valuation Percentage, or Moody's Second Trigger
               Valuation Percentage for such Eligible Collateral or Posted
               Collateral, respectively, in each case as set forth in Paragraph
               13(b)(ii).

               "Value" shall mean, in respect of any date, the related Fitch
               Value, the related Moody's First Trigger Value, and the related
               Moody's Second Trigger Value.



                   [Remainder of this page intentionally left blank]


<PAGE>


                           Table 1

            Remaining
      Weighted Average Life           Moody's First Trigger
        of Hedge in Years                    Factor
--------------------------------      ---------------------
Equal to or less than 1                       0.15%
Greater than 1 but less than or
equal to 2                                    0.30%
Greater than 2 but less than or
equal to 3                                    0.40%
Greater than 3 but less than or
equal to 4                                    0.60%
Greater than 4 but less than or
equal to 5                                    0.70%
Greater than 5 but less than or
equal to 6                                    0.80%
Greater than 6 but less than or
equal to 7                                    1.00%
Greater than 7 but less than or
equal to 8                                    1.10%
Greater than 8 but less than or
equal to 9                                    1.20%
Greater than 9 but less than or
equal to 10                                   1.30%
Greater than 10 but less than or
equal to 11                                   1.40%
Greater than 11 but less than or
equal to 12                                   1.50%
Greater than 12 but less than or
equal to 13                                   1.60%
Greater than 13 but less than or
equal to 14                                   1.70%
Greater than 14 but less than or
equal to 15                                   1.80%
Greater than 15 but less than or
equal to 16                                   1.90%
Greater than 16 but less than or
equal to 17                                   2.00%
Greater than 17 but less than or
equal to 18                                   2.00%
Greater than 18 but less than or
equal to 19                                   2.00%
Greater than 19 but less than or
equal to 20                                   2.00%
Greater than 20 but less than or
equal to 21                                   2.00%
Greater than 21 but less than or
equal to 22                                   2.00%
Greater than 22 but less than or
equal to 23                                   2.00%
Greater than 23 but less than or
equal to 24                                   2.00%
Greater than 24 but less than or
equal to 25                                   2.00%
Greater than 25 but less than or
equal to 26                                   2.00%
Greater than 26 but less than or
equal to 27                                   2.00%
Greater than 27 but less than or
equal to 28                                   2.00%
Greater than 28 but less than or
equal to 29                                   2.00%
Greater than 29                               2.00%



<PAGE>


                                     Table 2

            Remaining
      Weighted Average Life           Moody's First Trigger
        of Hedge in Years                    Factor
--------------------------------      ---------------------
Equal to or less than 1                     0.50%
Greater than 1 but less than or             1.00%
equal to 2
Greater than 2 but less than or             1.50%
equal to 3
Greater than 3 but less than or             1.90%
equal to 4
Greater than 4 but less than or             2.40%
equal to 5
Greater than 5 but less than or             2.80%
equal to 6
Greater than 6 but less than or             3.20%
equal to 7
Greater than 7 but less than or             3.60%
equal to 8
Greater than 8 but less than or             4.00%
equal to 9
Greater than 9 but less than or             4.40%
equal to 10
Greater than 10 but less than               4.70%
or equal to 11
Greater than 11 but less than               5.00%
or equal to 12
Greater than 12 but less than               5.40%
or equal to 13
Greater than 13 but less than               5.70%
or equal to 14
Greater than 14 but less than               6.00%
or equal to 15
Greater than 15 but less than               6.30%
or equal to 16
Greater than 16 but less than               6.60%
or equal to 17
Greater than 17 but less than               6.90%
or equal to 18
Greater than 18 but less than               7.20%
or equal to 19
Greater than 19 but less than               7.50%
or equal to 20
Greater than 20 but less than               7.80%
or equal to 21
Greater than 21 but less than               8.00%
or equal to 22
Greater than 22 but less than               8.00%
or equal to 23
Greater than 23 but less than               8.00%
or equal to 24
Greater than 24 but less than               8.00%
or equal to 25
Greater than 25 but less than               8.00%
or equal to 26
Greater than 26 but less than               8.00%
or equal to 27
Greater than 27 but less than               8.00%
or equal to 28
Greater than 28 but less than               8.00%
or equal to 29
Greater than 29                             8.00%




<PAGE>


                                     Table 3

            Remaining
      Weighted Average Life           Moody's First Trigger
        of Hedge in Years                    Factor
--------------------------------      ---------------------
Equal to or less than 1                      0.65%
Greater than 1 but less than or              1.30%
equal to 2
Greater than 2 but less than or              1.90%
equal to 3
Greater than 3 but less than or              2.50%
equal to 4
Greater than 4 but less than or              3.10%
equal to 5
Greater than 5 but less than or              3.60%
equal to 6
Greater than 6 but less than or              4.20%
equal to 7
Greater than 7 but less than or              4.70%
equal to 8
Greater than 8 but less than or              5.20%
equal to 9
Greater than 9 but less than or              5.70%
equal to 10
Greater than 10 but less than or             6.10%
equal to 11
Greater than 11 but less than or             6.50%
equal to 12
Greater than 12 but less than or             7.00%
equal to 13
Greater than 13 but less than or             7.40%
equal to 14
Greater than 14 but less than or             7.80%
equal to 15
Greater than 15 but less than or             8.20%
equal to 16
Greater than 16 but less than or             8.60%
equal to 17
Greater than 17 but less than or             9.00%
equal to 18
Greater than 18 but less than or             9.40%
equal to 19
Greater than 19 but less than or             9.70%
equal to 20
Greater than 20 but less than or            10.00%
equal to 21
Greater than 21 but less than or            10.00%
equal to 22
Greater than 22 but less than or            10.00%
equal to 23
Greater than 23 but less than or            10.00%
equal to 24
Greater than 24 but less than or            10.00%
equal to 25
Greater than 25 but less than or            10.00%
equal to 26
Greater than 26 but less than or            10.00%
equal to 27
Greater than 27 but less than or            10.00%
equal to 28
Greater than 28 but less than or            10.00%
equal to 29
Greater than 29                             10.00%