Document:

exv4w2

 

Exhibit 4.2

INDENTURE

Dated as of December 22, 2004

between

INDYMAC RESIDENTIAL ASSET-BACKED TRUST, SERIES 2004-LH1

(Issuer)

and

DEUTSCHE BANK NATIONAL TRUST COMPANY

(Indenture Trustee)

 

 

TABLE OF CONTENTS

	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	Page
	ARTICLE I DEFINITIONS	 	 	2	 
	 
	 	SECTION 1.1.	 	Definitions	 	 	2	 
	 
	 	SECTION 1.2.	 	Incorporation by Reference of Trust Indenture Act	 	 	9	 
	 
	 	SECTION 1.3.	 	Rules of Construction	 	 	9	 
	ARTICLE II THE NOTES	 	 	10	 
	 
	 	SECTION 2.1.	 	Form	 	 	10	 
	 
	 	SECTION 2.2.	 	Execution, Authentication, Delivery and Dating	 	 	10	 
	 
	 	SECTION 2.3.	 	Registration; Registration of Transfer and Exchange	 	 	11	 
	 
	 	SECTION 2.4.	 	Mutilated, Destroyed, Lost or Stolen Class A Notes	 	 	13	 
	 
	 	SECTION 2.5.	 	Persons Deemed Owner	 	 	14	 
	 
	 	SECTION 2.6.	 	Payment of Principal and Interest; Defaulted Interest	 	 	14	 
	 
	 	SECTION 2.7.	 	Cancellation	 	 	14	 
	 
	 	SECTION 2.8.	 	[Reserved]	 	 	15	 
	 
	 	SECTION 2.9.	 	Release of Trust Estate	 	 	15	 
	 
	 	SECTION 2.10.	 	Book-Entry Notes	 	 	15	 
	 
	 	SECTION 2.11.	 	Notices to Clearing Agency	 	 	16	 
	 
	 	SECTION 2.12.	 	Definitive Notes	 	 	16	 
	 
	 	SECTION 2.13.	 	Tax Treatment	 	 	16	 
	ARTICLE III COVENANTS	 	 	17	 
	 
	 	SECTION 3.1.	 	Payment of Principal, Interest and Other Amounts	 	 	17	 
	 
	 	SECTION 3.2.	 	Maintenance of Office or Agency	 	 	17	 
	 
	 	SECTION 3.3.	 	Money for Payments To Be Held in Trust	 	 	17	 
	 
	 	SECTION 3.4.	 	Existence	 	 	18	 
	 
	 	SECTION 3.5.	 	Protection of Trust Estate	 	 	19	 
	 
	 	SECTION 3.6.	 	Annual Opinions as to the Trust Estate	 	 	19	 
	 
	 	SECTION 3.7.	 	Performance of Obligations; Servicing of Mortgage Loans	 	 	20	 
	 
	 	SECTION 3.8.	 	Negative Covenants	 	 	21	 
	 
	 	SECTION 3.9.	 	Annual Statement as to Compliance	 	 	22	 
	 
	 	SECTION 3.10.	 	Covenants of the Issuer (not Covenants of the Owner Trustee)	 	 	22	 
	 
	 	SECTION 3.11.	 	Auction Administration Agreement; Mandatory Auction of the Class A Notes	 	 	23	 

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TABLE OF CONTENTS
(continued)

	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	Page
	 
	 	SECTION 3.12.	 	Restricted Payments	 	 	24	 
	 
	 	SECTION 3.13.	 	Treatment of Notes as Debt for All Purposes	 	 	24	 
	 
	 	SECTION 3.14.	 	[Reserved]	 	 	24	 
	 
	 	SECTION 3.15.	 	Further Instruments and Acts	 	 	24	 
	 
	 	SECTION 3.16.	 	Issuer May Consolidate, etc	 	 	24	 
	 
	 	SECTION 3.17.	 	Successor or Transferee	 	 	26	 
	 
	 	SECTION 3.18.	 	No Other Business	 	 	26	 
	 
	 	SECTION 3.19.	 	No Borrowing	 	 	26	 
	 
	 	SECTION 3.20.	 	Guarantees, Loans, Advances and Other Liabilities	 	 	26	 
	 
	 	SECTION 3.21.	 	Capital Expenditures	 	 	27	 
	 
	 	SECTION 3.22.	 	Validity of Notes	 	 	27	 
	ARTICLE IV SATISFACTION AND DISCHARGE	 	 	27	 
	 
	 	SECTION 4.1.	 	Satisfaction and Discharge of Indenture	 	 	27	 
	 
	 	SECTION 4.2.	 	Application of Trust Money	 	 	29	 
	 
	 	SECTION 4.3.	 	Subrogation and Cooperation	 	 	29	 
	 
	 	SECTION 4.4.	 	Repayment of Moneys Held by Paying Agent	 	 	30	 
	ARTICLE V REMEDIES	 	 	30	 
	 
	 	SECTION 5.1.	 	Events of Default	 	 	30	 
	 
	 	SECTION 5.2.	 	Acceleration of Maturity; Rescission and Annulment	 	 	31	 
	 
	 	SECTION 5.3.	 	Collection of Indebtedness and Suits for Enforcement by Indenture Trustee	 	 	32	 
	 
	 	SECTION 5.4.	 	Remedies; Priorities	 	 	34	 
	 
	 	SECTION 5.5.	 	Optional Preservation of the Trust Estate	 	 	36	 
	 
	 	SECTION 5.6.	 	Limitation of Suits	 	 	36	 
	 
	 	SECTION 5.7.	 	Unconditional Rights of Class A Noteholders To Receive Principal and Interest	 	 	37	 
	 
	 	SECTION 5.8.	 	Restoration of Rights and Remedies	 	 	37	 
	 
	 	SECTION 5.9.	 	Rights and Remedies Cumulative	 	 	37	 
	 
	 	SECTION 5.10.	 	Delay or Omission Not a Waiver	 	 	37	 
	 
	 	SECTION 5.11.	 	Control by Class A Noteholders	 	 	37	 
	 
	 	SECTION 5.12.	 	Waiver of Past Defaults	 	 	38	 
	 
	 	SECTION 5.13.	 	Undertaking for Costs	 	 	38	 

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TABLE OF CONTENTS
(continued)

	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	Page
	 
	 	SECTION 5.14.	 	Waiver of Stay or Extension Laws	 	 	39	 
	 
	 	SECTION 5.15.	 	Action on Notes	 	 	39	 
	 
	 	SECTION 5.16.	 	Performance and Enforcement of Certain Obligations	 	 	39	 
	ARTICLE VI THE INDENTURE TRUSTEE	 	 	40	 
	 
	 	SECTION 6.1.	 	Duties of Indenture Trustee	 	 	40	 
	 
	 	SECTION 6.2.	 	Rights of Indenture Trustee	 	 	41	 
	 
	 	SECTION 6.3.	 	Individual Rights of Indenture Trustee	 	 	44	 
	 
	 	SECTION 6.4.	 	Indenture Trustee’s Disclaimer	 	 	44	 
	 
	 	SECTION 6.5.	 	Notice of Defaults	 	 	44	 
	 
	 	SECTION 6.6.	 	Reports by Indenture Trustee to Holders	 	 	44	 
	 
	 	SECTION 6.7.	 	Compensation and Indemnity	 	 	44	 
	 
	 	SECTION 6.8.	 	Replacement of Indenture Trustee	 	 	45	 
	 
	 	SECTION 6.9.	 	Successor Indenture Trustee by Merger	 	 	46	 
	 
	 	SECTION 6.10.	 	Appointment of Co-Indenture Trustee or Separate Indenture Trustee	 	 	46	 
	 
	 	SECTION 6.11.	 	Eligibility; Disqualification	 	 	47	 
	 
	 	SECTION 6.12.	 	Preferential Collection of Claims Against Issuer	 	 	48	 
	 
	 	SECTION 6.13.	 	Representations and Warranties	 	 	48	 
	 
	 	SECTION 6.14.	 	Directions to Indenture Trustee	 	 	48	 
	ARTICLE VII NOTEHOLDERS’ LISTS AND REPORTS	 	 	48	 
	 
	 	SECTION 7.1.	 	Issuer To Furnish Indenture Trustee Names and Addresses of Class A Noteholders	 	 	48	 
	 
	 	SECTION 7.2.	 	Preservation of Information; Communications to Class A Noteholders	 	 	49	 
	 
	 	SECTION 7.3.	 	Reports by Issuer	 	 	49	 
	 
	 	SECTION 7.4.	 	Reports by Indenture Trustee	 	 	49	 
	ARTICLE VIII ACCOUNTS, DISBURSEMENTS AND RELEASES	 	 	50	 
	 
	 	SECTION 8.1.	 	Collection of Money	 	 	50	 
	 
	 	SECTION 8.2.	 	Accounts; Distributions	 	 	50	 
	 
	 	SECTION 8.3.	 	Opinion of Counsel	 	 	50	 
	ARTICLE IX SUPPLEMENTAL INDENTURES	 	 	51	 

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TABLE OF CONTENTS
(continued)

	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	Page
	 
	 	SECTION 9.1.	 	Supplemental Indentures Without Consent of Class A Noteholders	 	 	51	 
	 
	 	SECTION 9.2.	 	Supplemental Indentures with Consent of Class A Noteholders	 	 	52	 
	 
	 	SECTION 9.3.	 	Execution of Supplemental Indentures	 	 	54	 
	 
	 	SECTION 9.4.	 	Effect of Supplemental Indenture	 	 	54	 
	 
	 	SECTION 9.5.	 	Conformity with Trust Indenture Act	 	 	54	 
	 
	 	SECTION 9.6.	 	Reference in Notes to Supplemental Indentures	 	 	54	 
	ARTICLE X REDEMPTION OF NOTES	 	 	55	 
	 
	 	SECTION 10.1.	 	Redemption	 	 	55	 
	ARTICLE XI MISCELLANEOUS	 	 	55	 
	 
	 	SECTION 11.1.	 	Compliance Certificates and Opinions, etc	 	 	55	 
	 
	 	SECTION 11.2.	 	Form of Documents Delivered to Indenture Trustee	 	 	56	 
	 
	 	SECTION 11.3.	 	Acts of Class A Noteholders	 	 	57	 
	 
	 	SECTION 11.4.	 	Notices	 	 	58	 
	 
	 	SECTION 11.5.	 	Notices to Class A Noteholders; Waiver	 	 	59	 
	 
	 	SECTION 11.6.	 	Rights of the Insurer to Exercise Rights of Class A Noteholders	 	 	59	 
	 
	 	SECTION 11.7.	 	Conflict with Trust Indenture Act	 	 	59	 
	 
	 	SECTION 11.8.	 	Effect of Headings and Table of Contents	 	 	60	 
	 
	 	SECTION 11.9.	 	Successors and Assigns	 	 	60	 
	 
	 	SECTION 11.10.	 	Separability	 	 	60	 
	 
	 	SECTION 11.11.	 	Benefits of Indenture	 	 	60	 
	 
	 	SECTION 11.12.	 	Legal Holidays	 	 	60	 
	 
	 	SECTION 11.13.	 	GOVERNING LAW	 	 	60	 
	 
	 	SECTION 11.14.	 	Counterparts	 	 	60	 
	 
	 	SECTION 11.15.	 	Recording of Indenture	 	 	60	 
	 
	 	SECTION 11.16.	 	Trust Obligation	 	 	60	 
	 
	 	SECTION 11.17.	 	No Petition	 	 	61	 
	 
	 	SECTION 11.18.	 	Inspection	 	 	61	 
	 
	 	SECTION 11.19.	 	Inconsistencies With the Sale and Servicing Agreement	 	 	61	 
	 
	 	SECTION 11.20.	 	Third Party Beneficiaries	 	 	61	 

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TABLE OF CONTENTS
(continued)

Page

	 	 	 	 	 
	EXHIBITS	 	 	 	 
	EXHIBIT A

	 	-
	 	Form of Class A Notes
	EXHIBIT B

	 	-
	 	Representations and Warranties Regarding Mortgage Loans

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     INDENTURE dated as of December 22, 2004 between INDYMAC RESIDENTIAL ASSET-BACKED TRUST, SERIES
2004-LH1, a Delaware statutory trust (the “Issuer”), and DEUTSCHE BANK NATIONAL TRUST
COMPANY, a national banking association, as trustee and not in its individual capacity (the
“Indenture Trustee”).

     Each party agrees as follows for the benefit of the other party and for the equal and ratable
benefit of the holders of the Issuer’s Residential Asset-Backed Notes, Series 2004-LH1 (the
“Class A Notes”) and the Insurer:

GRANTING CLAUSE

     Subject to the terms of this Indenture, the Issuer hereby Grants to the Indenture Trustee at
the Closing Date, as Indenture Trustee for the benefit of the Class A Noteholders and the Insurer,
all of the Issuer’s right, title and interest, now owned or hereinafter acquired, in and to: (i)
the Trust Estate; (ii) all right, title and interest of the Issuer in the Sale and Servicing
Agreement and the Mortgage Loan Purchase Agreement with respect to the Mortgage Loans; (iii) all
present and future claims, demands, causes of action and choses in action in respect of any or all
of the foregoing and all payments on or under and all proceeds of every kind and nature whatsoever
in respect of any or all of the foregoing, including all proceeds of the conversion thereof,
voluntary or involuntary, into cash or other liquid property, all cash proceeds, accounts, accounts
receivable, notes, drafts, acceptances, chattel paper, checks, deposit accounts, insurance
proceeds, condemnation awards, rights to payment of any and every kind and other forms of
obligations and receivables, instruments and other property which at any time constitute all or
part of or are included in the proceeds of any of the foregoing; (iv) the Payment Account, the
Auction Proceeds Account, and the Revolving Period Funding Account and all funds and other property
on deposit from time to time therein; (v) all other property of the Trust from time to time; and
(vi) any and all proceeds of the foregoing (collectively the “Collateral”).

     The Issuer hereby assigns to the Indenture Trustee for the benefit of the Class A Noteholders
and the Insurer all representations and warranties made by the Seller and the Servicer in Section
2.04 of the Sale and Servicing Agreement and Section 3.01 of the Mortgage Loan Purchase Agreement,
as set forth fully in Exhibit B hereto, and the Issuer’s right to cause the Seller to repurchase
Mortgage Loans from the Issuer under certain circumstances described in the Sale and Servicing
Agreement and the Mortgage Loan Purchase Agreement.

     The foregoing Grant is made in trust to secure the payment of principal of and interest on,
and any other amounts owing in respect of, the Class A Notes, equally and ratably without
prejudice, priority or distinction, and to secure compliance with the provisions of this Indenture,
all as provided in this Indenture.

     The foregoing Grant shall inure to the benefit of the Insurer in respect of draws made on the
Note Policy and amounts owing from time to time pursuant to the Insurance and Indemnity Agreement,
and such Grant shall continue in full force and effect for the benefit of the Insurer until all
such amounts owing to it have been repaid in full.

     The Indenture Trustee, as Indenture Trustee on behalf of the holders of the Class A Notes,
acknowledges the foregoing Grant, accepts the trusts hereunder in good faith and without

 

 

notice of any adverse claim or liens and agrees to perform its duties required in this
Indenture to the best of its ability to the end that the interests of the holders of the Class A
Notes and the Insurer may be adequately and effectively protected. The Indenture Trustee agrees
and acknowledges that each item of Collateral that is physically delivered to the Indenture Trustee
will be held by the Indenture Trustee or by its appointed custodian. The Indenture Trustee further
agrees, upon request or if the Indenture Trustee shall change the location of the Collateral (as
location is determined in the applicable UCC) to notify the Depositor and the Trust as to the state
in which the Collateral is being held.

ARTICLE I

DEFINITIONS

     SECTION 1.1. Definitions.

     (a)      For all purposes of this Indenture, except as otherwise expressly provided herein or
unless the context otherwise requires, capitalized terms not otherwise defined herein shall have
the meanings assigned to such terms in the Sale and Servicing Agreement. All other capitalized
terms used herein shall have the meanings specified herein.

     Accounts: The Auction Proceeds Account, the Payment Account and the Revolving Period
Funding Account.

     Act: As specified in Section 11.3(a).

     Administration Agreement: The Administration Agreement dated as of December 22, 2004,
among the Bond Administrator, the Administrator, the Issuer and the Indenture Trustee.

     Administrator: IndyMac Bank, F.S.B., a federally chartered savings bank, in its
capacity as administrator under the Administration Agreement, or any successor appointed in
accordance with the terms of the Administration Agreement.

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

     Auction Administration Agreement: The Auction Administration Agreement, dated as of
December 22, 2004, among the Auction Administrator, the Issuer and the Indenture Trustee.

     Auction Administrator: Lehman Brothers Inc., a Delaware corporation, and its
successors and assigns.

     Auction Proceeds Account: The Auction Proceeds Account (as defined in the Sale and
Servicing Agreement), established by the Indenture Trustee.

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     Authorized Officer: With respect to the Issuer, any officer of the Owner Trustee who
is authorized to act for the Owner Trustee in matters relating to the Issuer and who is identified
on the list of Authorized Officers delivered by the Owner Trustee to the Indenture Trustee on the
Closing Date (as such list may be modified or supplemented from time to time thereafter) and, so
long as the Administration Agreement is in effect, any Vice President or more senior officer of the
Administrator who is authorized to act for the Administrator or in matters relating to the Issuer
and to be acted upon by the Administrator pursuant to the Administration Agreement and who is
identified on the list of Authorized Officers delivered by the Administrator to the Indenture
Trustee on the Closing Date (as such list may be modified or supplemented from time to time
thereafter).

     Bond Administrator: Deutsche Bank National Trust Company, a national banking
association in its capacity as bond administrator under the Administration Agreement, or any
successor appointed in accordance with the terms of the Administration Agreement.

     Book-Entry Note: Any Class A Note registered in the name of the Depository or its
nominee, ownership of a security entitlement with respect to which is reflected on the books of the
Depository or on the books of a Person maintaining an account with such Depository (directly or as
an indirect participant in accordance with the rules of such Depository).

     Certificateholder: The holder of a Class B Certificate, Class O Certificate or Transferor
Certificate issued by the Trust.

     Class A Note: Any Class A Note executed by the Issuer and authenticated by the
Indenture Trustee substantially in the form of Exhibit A hereto.

     Class A Note Rate: As defined in the Sale and Servicing Agreement.

     Clearing Agency: An organization registered as a “clearing agency” pursuant to
Section 17A of the Exchange Act.

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

     Closing Date: December 22, 2004.

     Code: The Internal Revenue Code of 1986, as amended from time to time, and Treasury
Regulations promulgated thereunder.

     Collateral: As defined in the Granting Clause of this Indenture.

     Commission: The Securities and Exchange Commission.

     Corporate Trust Office: The principal office of the Indenture Trustee at which at any
particular time its corporate trust business shall be administered, which office at date of
execution of this Agreement is located at 1761 East Saint Andrew Place, Santa Ana, California
92705-4934, Attn: Trust Administration—IN04L2, or at such other address as the Indenture

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Trustee may designate from time to time by notice to the Class A Noteholders, the Issuer and
the Insurer or the principal corporate trust office of any successor Indenture Trustee at the
address designated by such successor Indenture Trustee by notice to the Class A Noteholders, the
Insurer, and the Issuer.

     Default: Any occurrence that is, or with notice or the lapse of time or both would
become, an Event of Default.

     Definitive Notes: As specified in Section 2.10.

     Depositor: IndyMac ABS, Inc., a Delaware corporation, in its capacity as depositor
under the Sale and Servicing Agreement, and its successor in interest.

     Depository Institution: Shall mean either (1) a depository institution or trust
company (which may be the Indenture Trustee) organized under the laws of the United States or any
one of the States thereof, including the District of Columbia (or any domestic branch of a foreign
bank) which at all times (a) has a short-term unsecured debt rating of “P-1” by Moody’s, (b) has a
short-term unsecured debt rating of “A-1” by Standard & Poor’s and (c) has its accounts fully
insured by the FDIC or maintains trust accounts in a fiduciary capacity, or (2) any other
institution that is acceptable to each Rating Agency; provided, however, that if such other
institution does not satisfy the rating criteria set forth in clause (1), such other institution
shall also be acceptable to the Insurer.

     Eligible Investments: Investments which meet the criteria of the rating agencies from
time to time as being consistent with their then current ratings of the securities.

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

     Event of Default: As defined in Section 5.1.

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

     Executive Officer: With respect to any corporation, the Chief Executive Officer,
Chief Operating Officer, Chief Financial Officer, President, Executive Vice President, any Vice
President, the Secretary, Cashier or the Treasurer of such corporation; and with respect to any
partnership, any general partner thereof.

     Final Payment Date: With respect to any Class A Note, the Payment Date in January,
2037.

     Grant: Means mortgage, pledge, bargain, warrant, alienate, remise, release, convey,
assign, transfer, create, and grant a lien upon and a security interest in and right of set off
against, deposit, set over and confirm pursuant to this Indenture. A Grant of the Collateral shall
include all rights, powers and options (but none of the obligations) of the granting party
thereunder, including the immediate and continuing right to claim for, collect, receive and give
receipt for principal and interest payments in respect of the Collateral and all other moneys
payable thereunder, to give and receive notices and other communications, to make waivers or other
agreements, to exercise all rights and options, to bring Proceedings in the name of the granting

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party or otherwise, and generally to do and receive anything that the granting party is or may
be entitled to do or receive thereunder or with respect thereto.

     Holder or Class A Noteholder: The Person in whose name a Class A Note is registered
on the Note Register.

     Indenture Trustee: Deutsche Bank National Trust Company, a national banking
association, as Indenture Trustee under this Indenture, or any successor Indenture Trustee
appointed pursuant to the terms of this Indenture.

     Independent: When used with respect to any specified Person, that the Person (a) is
in fact independent of the Issuer, any other obligor on the Class A Notes, the Transferor and any
Affiliate of any of the foregoing Persons, (b) does not have any direct financial interest or any
material indirect financial interest in the Issuer, any such other obligor, the Transferor or any
Affiliate of any of the foregoing Persons and (c) is not connected with the Issuer, any such other
obligor, the Transferor or any Affiliate of any of the foregoing Persons as an officer, employee,
promoter, underwriter, trustee, partner, director or person performing similar functions.

     Independent Certificate: A certificate or opinion to be delivered to the Indenture
Trustee under the circumstances described in, and otherwise complying with, the applicable
requirements of Section 11.1 herein, made by an Independent appraiser or other expert appointed by
an Issuer Order, and such opinion or certificate shall state that the signer has read the
definition of “Independent” in this Indenture and that the signer is Independent within the
meaning thereof.

     Insurer: Ambac Assurance Corporation, a Wisconsin-domiciled stock insurance
corporation, or any successor thereto.

     Issuer: IndyMac Residential Asset-Backed Trust, Series 2004-LH1 until a successor
replaces it in accordance with the terms of the Transaction Documents and, thereafter, means the
successor.

     Issuer Order or Issuer Request: A written order or request signed in the name of the
Issuer by any one of its Authorized Officers and delivered to the Indenture Trustee.

     Mandatory Auction Payment Date: The Payment Date in November 2006.

     Moody’s: Moody’s Investors Service, Inc., or any successor thereto.

     Mortgage Loan: As defined in the Sale and Servicing Agreement.

     Mortgage Loan Purchase Agreement: The Mortgage Loan Purchase Agreement, dated as of
December 1, 2006, between the Seller and the Depositor.

     Note Depository Agreement: The agreement dated as of December 22, 2004, among the
Issuer, the Indenture Trustee and The Depository Trust Company, as the initial Clearing Agency,
relating to the Book-Entry Notes.

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

     Note Policy: The note guaranty insurance policy (No. AB0851BE) with respect to the
Class A Notes and all endorsements thereto, if any, dated the Closing Date, issued by the Insurer
for the benefit of the Holders of the Class A Notes.

     Note Register and Note Registrar: Each as defined in Section 2.3.

     Officer’s Certificate: A certificate signed by any Authorized Officer of the Issuer,
under the circumstances described in, and otherwise complying with, the applicable requirements of
Section 11.1 herein, and delivered to the Indenture Trustee. Unless otherwise specified, any
reference in this Indenture to an Officer’s Certificate shall be to an Officer’s Certificate of any
Authorized Officer of the Issuer.

     Opinion of Counsel: One or more written opinions of counsel who may, except as
otherwise expressly provided in this Indenture, be employees of or counsel to the Issuer and who
shall be satisfactory to the Indenture Trustee and the Insurer, and which opinion or opinions shall
be addressed to the Indenture Trustee and the Insurer, as Indenture Trustee and the Insurer,
respectively, and shall comply with any applicable requirements of Section 11.1 herein and shall be
in form and substance satisfactory to the Indenture Trustee and the Insurer.

     Outstanding: With respect to any Class A Note and as of the date of determination,
any Class A Note theretofore authenticated and delivered under this Indenture except:

     (i) Class A Notes theretofore canceled by the Note Registrar or delivered to the Note
Registrar for cancellation;

     (ii) Class A Notes or portions thereof the payment for which money in the necessary
amount has been theretofore deposited with the Indenture Trustee or any Paying Agent in
trust for the Holders of such Class A Notes (provided, however, that if such Class A Notes
are to be redeemed, notice of such redemption has been duly given pursuant to this Indenture
or provision for such notice has been made, satisfactory to the Indenture Trustee);

     (iii) Class A Notes in exchange for or in lieu of which other Class A Notes have been
authenticated and delivered pursuant to this Indenture unless proof satisfactory to the
Indenture Trustee is presented that any such Class A Notes are held by a protected
purchaser; and

     (iv) Class A Notes for which the Final Payment Date has occurred;

provided, however, in determining whether the Holders of the requisite Outstanding Amount of the
Class A Notes have given any request, demand, authorization, direction, notice, consent, or waiver
hereunder or under any Transaction Document, unless 100% of the Class A Notes are

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held by such Person, Class A Notes owned by the Issuer, any other obligor upon the Class A Notes,
the Depositor, the Transferor or any Affiliate of any of the foregoing Persons shall be disregarded
and deemed not to be Outstanding, except that, in determining whether the Indenture Trustee shall
be fully protected in relying upon any such request, demand, authorization, direction, notice,
consent, or waiver, only Class A Notes that a Responsible Officer of the Indenture Trustee actually
knows to be so owned shall be so disregarded and provided further that for purposes of determining
the Insurer’s subrogation rights, a Class A Note shall be deemed Outstanding to the extent of any
payment made by the Insurer that has not been reimbursed. Class A Notes so owned that have been
pledged in good faith may be regarded as Outstanding if the pledgee establishes to the satisfaction
of the Indenture Trustee the pledgee’s right so to act with respect to such Class A Notes and that
the pledgee is not the Issuer, any other obligor upon the Class A Notes, the Transferor or any
Affiliate of any of the foregoing Persons.

     Outstanding Amount: The aggregate principal amount of all Class A Notes Outstanding
at the date of determination.

     Owner Trustee: Wilmington Trust Company, a Delaware banking corporation, not in its
individual capacity but solely as Owner Trustee under the Trust Agreement.

     Paying Agent: The Indenture Trustee or any other Person that meets the eligibility
standards for the Indenture Trustee specified in Section 6.11 of this Indenture and is authorized
by the Issuer to make payments to and distributions from the Accounts, including payment of
principal of or interest on the Class A Notes on behalf of the Issuer.

     Payment Account: The Payment Account (as defined in the Sale and Servicing
Agreement), established by the Indenture Trustee.

     Payment Date: The 27th day of each month or, if such day is not a Business Day, then
the next Business Day, beginning in January 2005.

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

     Predecessor Note: With respect to any particular Class A Note, every previous Class A
Note evidencing all or a portion of the same debt as that evidenced by such particular Class A
Note; and, for the purpose of this definition, any Class A Note authenticated and delivered under
Article II in lieu of a mutilated, lost, destroyed or stolen Class A Note shall be deemed to
evidence the same debt as the mutilated, lost, destroyed or stolen Class A Note.

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

     Rating Agency Condition: With respect to certain actions requiring prior Rating
Agency consent, that each Rating Agency shall have been given 10 days (or such shorter period as is
acceptable to each Rating Agency) prior notice thereof and that each of the Rating Agencies shall
have notified the Issuer, the Depositor, the Seller, the Servicer, the Indenture Trustee and

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the Insurer in writing that such action will not result in a reduction or withdrawal of the
then current rating of the Class A Notes without regard to the Note Policy.

     Rating Agency: Either of (i) Moody’s or (ii) Standard & Poor’s. If no such
organization or successor is any longer in existence, “Rating Agency” shall be a nationally
recognized statistical rating organization or other comparable person designated by the Depositor,
the Seller and the Insurer, notice of which designation shall have been given to the Indenture
Trustee.

     Record Date: As defined in the Sale and Servicing Agreement.

     Redemption Date: In the case of a redemption of the Class A Notes pursuant to Section
10.1, the Payment Date specified by the Indenture Trustee pursuant to Section 10.1.

     Registered Holder: The Person in whose name a Class A Note is registered on the Note
Register on the applicable Record Date.

     Responsible Officer: As defined in the Sale and Servicing Agreement.

     Revolving Period Funding Account: The Revolving Period Funding Account (as defined in
the Sale and Servicing Agreement), established by the Indenture Trustee.

     Sale and Servicing Agreement: The Sale and Servicing Agreement dated as of December
1, 2004, among the Depositor, the Seller, the Servicer, the Issuer and the Indenture Trustee.

     Seller: IndyMac Bank, F.S.B., a federal charter savings bank, and its successors and
assigns.

     Servicer: IndyMac Bank, F.S.B., a federal charter savings bank, in its capacity as
servicer under the Sale and Servicing Agreement, or any successor servicer appointed in accordance
with the terms of the Sale and Servicing Agreement.

     Standard & Poor’s: Standard & Poor’s Ratings Services, a division of The McGraw Hill
Companies, Inc.

     State: Any one of the 50 States of the United States of America or the District of
Columbia.

     Transaction Documents: As defined in the Sale and Servicing Agreement.

     Transferor: As defined in the Trust Agreement.

     Trust: The Issuer.

     Trust Agreement: The Trust Agreement, dated as of December 14, 2004, among the
Seller, the Depositor and the Owner Trustee, as amended and restated as of December 22, 2004, among
the Seller, the Depositor and the Owner Trustee.

     Trust Estate: As defined in the Trust Agreement.

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     Trust Indenture Act or TIA: The Trust Indenture Act of 1939 as in force on the date
hereof, unless otherwise specifically provided.

     UCC: Unless the context otherwise requires, the Uniform Commercial Code, as in effect
in the relevant jurisdiction, as amended from time to time.

     SECTION 1.2. Incorporation by Reference of Trust Indenture Act. Whenever this
Indenture refers to a provision of the TIA, the provision is incorporated by reference in and made
a part of this Indenture. The following TIA terms used in this Indenture have the following
meanings:

     Commission: The Securities and Exchange Commission.

     indenture securities: The Class A Notes.

     indenture security holder: A Class A Noteholder.

     indenture to be qualified: This Indenture.

     indenture trustee or institutional trustee: The Indenture Trustee.

     obligor: On the indenture securities means the Issuer and any other obligor on the
indenture securities.

All other TIA terms used in this Indenture that are defined in the TIA, defined by TIA reference to
another statute or defined by Commission rule have the meaning assigned to them by such
definitions.

     SECTION 1.3. Rules of Construction.

     Unless the context otherwise requires:

     (i) a term has the meaning assigned to it;

     (ii) an accounting term not otherwise defined has the meaning assigned to it in
accordance with generally accepted accounting principles as in effect from time to time;

     (iii) “or” is not exclusive;

     (iv) “including” means including without limitation;

     (v) words in the singular include the plural and words in the plural include the
singular; and

     (vi) any agreement, instrument or statute defined or referred to herein or in any
instrument or certificate delivered in connection herewith means such agreement, instrument
or statute as from time to time amended, modified or supplemented (as provided in such
agreements) and includes (in the case of agreements or instruments)

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references to all attachments thereto and instruments incorporated therein; references
to a Person are also to its permitted successors and assigns.

ARTICLE II

THE NOTES

     SECTION 2.1. Form. The Class A Notes shall be designated as the “INDYMAC RESIDENTIAL
ASSET-BACKED TRUST, SERIES 2004-LH1, IndyMac Residential Asset-Backed Notes, Series 2004-LH1”.
Each Class A Note shall be in substantially the form set forth in Exhibit A with such
appropriate insertions, omissions, substitutions and other variations as are required or permitted
by this Indenture, and may have such letters, numbers or other marks of identification and such
legends or endorsements placed thereon as may, consistently herewith, be determined by the officers
executing such Class A Notes, as evidenced by their execution thereof. Any portion of the text of
any Class A Note may be set forth on the reverse thereof, with an appropriate reference thereto on
the face of such Class A Note. The Definitive Notes shall be typewritten, printed, lithographed or
engraved or produced by any combination of these methods, all as determined by the officers
executing such Definitive Notes, as evidenced by their execution of such Definitive Notes.

     The terms of the Class A Notes are set forth in Exhibit A hereto. The terms of the
Class A Notes are part of the terms of this Indenture.

     SECTION 2.2. Execution, Authentication, Delivery and Dating. The Class A Notes shall
be executed on behalf of the Issuer by an Authorized Officer of the Owner Trustee. The signature
of any such Authorized Officer on the Class A Notes may be manual or facsimile.

     Class A Notes bearing the manual or facsimile signature of individuals who were at any time
Authorized Officers of the Owner Trustee shall bind the Issuer, notwithstanding that such
individuals or any of them have ceased to hold such offices prior to the authentication and
delivery of such Class A Notes or did not hold such offices at the date of such Class A Notes.

     The Indenture Trustee shall upon receipt of an Issuer Order, authenticate and deliver the
Class A Notes for original issue in the principal amount equal to $500,000,000. The aggregate
principal amount of the Class A Notes outstanding at any time may not exceed such amount.

     The Class A Notes that are authenticated and delivered by the Indenture Trustee to or upon the
order of the Issuer on the Closing Date shall be dated December 22, 2004. All other Class A Notes
that are authenticated after the Closing Date for any other purpose under the Indenture shall be
dated the date of their authentication. The Class A Notes shall be issuable as registered Class A
Notes in the minimum denomination of $25,000 and multiples of $1,000 in excess thereof.

     No Class A Note shall be entitled to any benefit under this Indenture or be valid or
obligatory for any purpose, unless there appears on such Class A Note a certificate of
authentication substantially in the form provided for herein executed by the Indenture Trustee by
the manual signature of one of its authorized signatories, and such certificate upon any Class A

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Note shall be conclusive evidence, and the only evidence, that such Class A Note has been duly
authenticated and delivered hereunder.

     SECTION 2.3. Registration; Registration of Transfer and Exchange. The Issuer shall
cause to be kept a register (the “Note Register”) in which, subject to such reasonable
regulations as it may prescribe, the Issuer shall provide for the registration of Class A Notes and
the registration of transfers of Class A Notes. The Indenture Trustee initially shall be the
“Note Registrar” for the purpose of registering Class A Notes and transfers of Class A
Notes as herein provided. Upon any resignation of any Note Registrar, the Issuer shall promptly
appoint a successor or, if it elects not to make such an appointment, assume the duties of the Note
Registrar.

     If a Person other than the Indenture Trustee is appointed by the Issuer as Note Registrar, the
Issuer will give the Indenture Trustee prompt written notice of the appointment of such Note
Registrar and of the location, and any change in the location, of the Note Register, and the
Indenture Trustee shall have the right to inspect the Note Register at all reasonable times and to
obtain copies thereof, and the Indenture Trustee shall have the right to conclusively rely upon a
certificate executed on behalf of the Note Registrar by an Executive Officer thereof as to the
names and addresses of the Holders of the Class A Notes and the principal amounts and number of
such Class A Notes.

     Upon surrender for registration of transfer of any Class A Note at the office or agency of the
Issuer to be maintained as provided in Section 3.2 hereof, the Owner Trustee on behalf of the
Issuer shall execute, and the Indenture Trustee shall authenticate and the Class A Noteholder shall
obtain from the Indenture Trustee, in the name of the designated transferee or transferees, one or
more new Class A Notes in any authorized denominations, of a like aggregate principal amount.

     At the option of the Holder, Class A Notes may be exchanged for other Class A Notes in any
authorized denominations, of a like aggregate principal amount, upon surrender of the Class A Notes
to be exchanged at such office or agency. Whenever any Class A Notes are so surrendered for
exchange, the Issuer shall execute, and the Indenture Trustee shall authenticate and the Class A
Noteholder shall obtain from the Indenture Trustee, the Class A Notes which the Class A Noteholder
making the exchange is entitled to receive.

     All Class A Notes issued upon any registration of transfer or exchange of Class A Notes shall
be the valid obligations of the Issuer, evidencing the same debt, and entitled to the same benefits
under this Indenture, as the Class A Notes surrendered upon such registration of transfer or
exchange.

     Every Class A Note presented or surrendered for registration of transfer or exchange shall be
duly endorsed by, or be accompanied by a written instrument of transfer in form satisfactory to the
Indenture Trustee duly executed by, the Holder thereof or such Holder’s attorney duly authorized in
writing, with such signature guaranteed by an “eligible guarantor institution” meeting the
requirements of the Note Registrar, which requirements include membership or participation in the
Securities Transfer Agent’s Medallion Program (“STAMP”) or such other

11

 

“signature guarantee program” as may be determined by the Note Registrar in addition to, or in
substitution for, STAMP, all in accordance with the Exchange Act.

     No service charge shall be made to a Holder for any registration of transfer or exchange of
Class A Notes, but the Issuer may require payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in connection with any registration of transfer or exchange
of Class A Notes, other than exchanges pursuant to Section 2.4 or Section 9.6 hereof not involving
any transfer.

     By acquiring a Class A Note, each purchaser and transferee shall be deemed to represent and
warrant that either (a) it is not acquiring the Class A Note with the plan assets of an “employee
benefit plan” as defined in Section 3(3) of ERISA, which is subject to Title I of ERISA, or a
“plan” as defined in Section 4975 of the Code or an employee benefit plan or other retirement
arrangement subject to any federal, state, local or foreign law that is similar to Title I of ERISA
or Section 4975 of the Code (“Similar Law”) or any entity deemed to hold the plan assets of
the foregoing; or (b) the acquisition and holding of the Class A Note will satisfy the requirements
for exemptive relief under Prohibited Transaction Class Exemption (“PTCE”) 84-14, PTCE
90-1, PTCE 91-38, PTCE 95-60, PTCE 96-23 or a similar exemption, or in the case of a plan or
arrangement subject to a Similar Law, will not result in a non-exempt violation of such Similar
Law.

     After the Closing Date, any pledge or transfer of any of the Class A Notes by the Issuer or
any entity with which the Issuer is consolidated for federal income tax purposes under Treasury
Regulation Section 1.7701-3 or any members (the Issuer, each entity or member, a “Member”) of the
consolidated group with which the Issuer files consolidated federal income tax returns (the Issuer
and that group, the “Consolidated Group”) to any Person other than Members of the Consolidated
Group or any acquisition of any of the Class A Notes by a Member shall require an Opinion of
Counsel acceptable to the Indenture Trustee and the Insurer (at the expense of such transferor) to
the effect that (a) such pledge or transfer will not cause the Issuer to be treated for federal
income tax purposes as an association taxable as a corporation, a taxable mortgage pool, or a
publicly traded partnership taxable as a corporation and (b) the Class A Notes will be treated as
debt for all purposes; provided, however, that no Opinion of Counsel shall be required in
connection with an acquisition of the Class A Notes in a transaction involving the termination of
the Issuer or the redemption and cancellation of the Class A Notes. Any attempted or purported
pledge or transfer in violation of this Section 2.3 shall be absolutely null and void and shall
invest no rights in the purported transferee.

     Any transfer of a Class A Note pursuant to the Auction Administration Agreement shall comply
with the requirements of this Section 2.3. If a Class A Noteholder fails to surrender any
Definitive Note pursuant to Section 2(g) of the Auction Administration Agreement, upon notice and
instruction of the Auction Administrator, the Indenture Trustee shall deem such Class A Note
cancelled in accordance with the Auction Administration Agreement and Section 2.7 hereof.

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     SECTION 2.4. Mutilated, Destroyed, Lost or Stolen Class A Notes. If:

     (i) any mutilated Class A Note is surrendered to the Indenture Trustee, or the
Indenture Trustee receives evidence to its satisfaction of the destruction, loss or theft of
any Class A Note, and

     (ii) there is delivered to the Indenture Trustee such security or indemnity as may be
reasonably required by it to hold the Issuer and the Indenture Trustee harmless,

then, in the absence of notice to the Issuer, the Note Registrar or the Indenture Trustee that such
Class A Note has been acquired by a protected purchaser, an Authorized Officer of the Owner Trustee
shall execute, and upon written request the Indenture Trustee shall authenticate and deliver, in
exchange for or in lieu of any such mutilated, destroyed, lost or stolen Class A Note, a
replacement Class A Note; provided, however, that if any such destroyed, lost or stolen Class A
Note, but not a mutilated Class A Note, shall have become or within seven days shall be due and
payable, or shall have been called for redemption, instead of issuing a replacement Class A Note,
the Issuer may pay such destroyed, lost or stolen Class A Note when so due or payable or upon the
Redemption Date without surrender thereof. If, after the delivery of such replacement Class A Note
or payment of a destroyed, lost or stolen Class A Note pursuant to the proviso to the preceding
sentence, a protected purchaser of the original Class A Note in lieu of which such replacement
Class A Note was issued presents for payment such original Class A Note, the Issuer and the
Indenture Trustee shall be entitled to recover such replacement Class A Note (or such payment) from
the Person to whom it was delivered or any Person taking such replacement Class A Note from such
Person to whom such replacement Class A Note was delivered or any assignee of such Person, except a
protected purchaser, and shall be entitled to recover upon the security or indemnity provided
therefor to the extent of any loss, damage, cost or expense incurred by the Issuer or the Indenture
Trustee in connection therewith. The calculation of Insured Payments shall be made without regard
to the issuance of any replacement Class A Note.

     Upon the issuance of any replacement Class A Note under this Section 2.4, the Issuer may
require the payment by the Holder of such Class A Note of a sum sufficient to cover any tax or
other governmental charge that may be imposed in relation thereto and any other reasonable expenses
(including the fees and expenses of the Indenture Trustee and its counsel) connected therewith.

     Every replacement Class A Note issued pursuant to this Section 2.4 in replacement of any
mutilated, destroyed, lost or stolen Class A Note shall constitute an original additional
contractual obligation of the Issuer, whether or not the mutilated, destroyed, lost or stolen Class
A Note shall be at any time enforceable by anyone, and shall be entitled to all the benefits of
this Indenture equally and proportionately with any and all other Class A Notes duly issued
hereunder.

     The provisions of this Section 2.4 are exclusive and shall preclude (to the extent lawful) all
other rights and remedies with respect to the replacement or payment of mutilated, destroyed, lost
or stolen Class A Notes.

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     SECTION 2.5. Persons Deemed Owner. Prior to due presentment for registration of
transfer of any Class A Note, the Issuer, the Indenture Trustee and any agent of the Issuer or the
Indenture Trustee may treat the Person in whose name any Class A Note is registered (as of the day
of determination) as the owner of such Class A Note for the purpose of receiving payments of
principal of and interest on, if any, such Class A Note and for all other purposes whatsoever,
whether or not such Class A Note be overdue, and none of the Issuer, the Indenture Trustee or any
agent of the Issuer or the Indenture Trustee shall be affected by notice to the contrary.

     SECTION 2.6. Payment of Principal and Interest; Defaulted Interest.

     (a)      Each Class A Note shall accrue interest at the Class A Note Rate and such interest shall
be payable on each Payment Date as specified in Exhibit A hereto, subject to Section 3.1
hereof. Any installment of interest or principal, if any, payable on any Class A Note that is
punctually paid or duly provided for by the Issuer on the applicable Payment Date shall be paid to
the Person in whose name such Class A Note (or one or more Predecessor Notes) is registered on the
Record Date in the manner set forth in Section 5.01(c) of the Sale and Servicing Agreement.

     (b)      The principal of each Class A Note shall be payable in installments on each Payment Date
as provided in the forms of the Class A Notes set forth in Exhibit A hereto.
Notwithstanding the foregoing, the entire unpaid principal amount of the Class A Notes shall be due
and payable, if not previously paid, on the earliest of (i) the Final Payment Date, (ii) the
Redemption Date or (iii) the date on which an Event of Default shall have occurred and be
continuing, if the Class A Notes shall have been declared or shall otherwise have become
immediately due and payable in the manner provided in Section 5.2 below. All principal payments on
the Class A Notes shall be in the manner set forth in the Sale and Servicing Agreement. The
Indenture Trustee shall notify the Person in whose name a Class A Note is registered at the close
of business on the Record Date preceding the Payment Date on which the Issuer expects that the
final installment of principal of and interest on such Class A Note will be paid. Such notice
shall be mailed or transmitted by facsimile prior to such Final Payment Date and shall specify that
such final installment will be payable only upon presentation and surrender of such Class A Note
and shall specify the place where such Class A Note may be presented and surrendered for payment of
such installment. Notices in connection with redemptions of Class A Notes shall be mailed to
Noteholders as provided in Section 8.01 of the Sale and Servicing Agreement.

     SECTION 2.7. Cancellation. All Class A Notes surrendered for payment, registration of
transfer, exchange or redemption shall, if surrendered to any Person other than the Indenture
Trustee, be delivered to the Indenture Trustee and shall be canceled by the Indenture Trustee as
soon as practicable. The Issuer may at any time deliver to the Indenture Trustee for cancellation
any Class A Notes previously authenticated and delivered hereunder which the Issuer may have
acquired in any manner whatsoever, and all Class A Notes so delivered shall be canceled by the
Indenture Trustee as soon as practicable. No Class A Notes shall be authenticated in lieu of or in
exchange for any Class A Notes canceled as provided in this Section, except as expressly permitted
by this Indenture. All canceled Class A Notes may be held or disposed of by the Indenture Trustee
in accordance with its standard retention or disposal policy as in effect at the time unless the
Issuer shall direct by an Issuer Order that they be destroyed or returned to it;

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provided, that such Issuer Order is timely and the Class A Notes have not been previously
disposed of by the Indenture Trustee.

     SECTION 2.8. [Reserved].

     SECTION 2.9. Release of Trust Estate.

     (a)      Except as otherwise provided in Section 11.1 hereof and the terms of the Transaction
Documents, the Indenture Trustee shall release property from the lien of this Indenture only upon
consent of the Insurer and receipt of an Issuer Request accompanied by an Officer’s Certificate, an
Opinion of Counsel and Independent Certificates in accordance with TIA Sections 314(c) and
314(d)(l) or an Opinion of Counsel in lieu of such Independent Certificates to the effect that the
TIA does not require any such Independent Certificates.

     (b)      The Servicer, on behalf of the Issuer and with the consent of the Insurer, shall be
entitled to obtain a release from the lien of this Indenture for any Mortgage Loan and the related
Mortgaged Property at any time in accordance with the provisions of Section 3.08 of the Sale and
Servicing Agreement.

     (c)      The Indenture Trustee shall, if requested by the Servicer, temporarily release to the
Servicer the Mortgage File pursuant to the provisions of Section 3.08 of the Sale and Servicing
Agreement upon compliance by the Servicer of the provisions thereof.

     SECTION 2.10. Book-Entry Notes. The Class A Notes, upon original issuance, will be
issued in the form of typewritten Class A Notes representing the Book-Entry Notes, to be delivered
to The Depository Trust Company, the initial Clearing Agency or its custodian, by, or on behalf of,
the Issuer. The Book-Entry Notes shall be registered initially on the Note Register in the name of
Cede & Co., the nominee of the initial Clearing Agency, and no Note Owner thereof will receive a
definitive Class A Note representing such Note Owner’s interest in such Class A Note, except as
provided in Section 2.12 below. Unless and until definitive, fully registered Class A Notes (the
“Definitive Notes”) have been issued to such Note Owners pursuant to Section 2.12 below:

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

     (ii) the Note Registrar and the Indenture Trustee shall be entitled to deal with the
Clearing Agency for all purposes of this Indenture (including the payment of principal of
and interest on the Class A Notes and the giving of instructions or directions hereunder) as
the sole holder of the Class A Notes, and shall have no obligation to the Note Owners;

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

     (iv) the rights of Note Owners shall be exercised only through the Clearing Agency and
shall be limited to those established by law and agreements between such Note Owners and the
Clearing Agency and/or the Clearing Agency Participants pursuant to the Note Depository
Agreement. Unless and until Definitive Notes are issued pursuant to Section 2.12 below, the
initial Clearing Agency will make book-entry transfers among

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the Clearing Agency Participants and receive and transmit payments of principal of and
interest on the Class A Notes to such Clearing Agency Participants; and

     (v) whenever this Indenture requires or permits actions to be taken based upon
instructions or directions of Holders of Class A Notes evidencing a specified percentage of
the Outstanding Amount of the Class A Notes, the Clearing Agency shall be deemed to
represent such percentage only to the extent that it has received instructions to such
effect from Note Owners and/or Clearing Agency Participants owning or representing,
respectively, such required percentage of security entitlements with respect to the Class A
Notes and has delivered such instructions to the Indenture Trustee.

     SECTION 2.11. Notices to Clearing Agency. Whenever a notice or other communication to
the Class A Noteholders is required under this Indenture, unless and until Definitive Notes shall
have been issued to such Note Owners pursuant to Section 2.12, the Indenture Trustee shall give all
such notices and communications specified herein to be given to Holders of the Class A Notes, to
the Clearing Agency, and shall have no obligation to such Note Owners.

     SECTION 2.12. Definitive Notes. If (i) the Clearing Agency or the Issuer advises the
Indenture Trustee in writing that the Clearing Agency is no longer willing or able to properly
discharge its responsibilities with respect to the Book-Entry Notes and the Clearing Agency or the
Issuer is unable to locate a qualified successor, (ii) the Issuer, with the consent of the related
Clearing Agency Participants, advises the Indenture Trustee in writing that it elects to terminate
the book-entry system through the Clearing Agency or (iii) after the occurrence of an Event of
Default, Note Owners of security entitlements representing beneficial interests aggregating at
least a majority of the Outstanding Amount of such Class A Notes advise the Clearing Agency in
writing that the continuation of a book-entry system through the Clearing Agency is no longer in
the best interests of such Note Owners and the Clearing Agency Participants consent to the
termination of the book-entry system through the Clearing Agency, then the Clearing Agency shall
notify all Note Owners and the Indenture Trustee of the occurrence of such event and of the
availability of Definitive Notes to Note Owners requesting the same. Upon surrender to the
Indenture Trustee of the typewritten Class A Notes representing the Book-Entry Notes by the
Clearing Agency, accompanied by registration instructions, the Issuer shall execute and the
Indenture Trustee shall authenticate the Definitive Notes in accordance with the instructions of
the Clearing Agency. None of the Issuer, the Note Registrar or the Indenture Trustee shall be
liable for any delay in delivery of such instructions and may conclusively rely on, and shall be
fully protected in relying on, such instructions. Upon the issuance of Definitive Notes, the
Indenture Trustee and the Note Registrar shall recognize the Holders of the Definitive Notes as
Class A Noteholders.

     SECTION 2.13. Tax Treatment. The Issuer has entered into this Indenture, and the
Class A Notes will be issued, with the intention that, for all tax purposes, the Class A Notes will
qualify as indebtedness secured by the Trust Estate. The Issuer, by entering into this Indenture,
and each Class A Noteholder, by its acceptance of a Class A Note (and each Note Owner by its
acceptance of a security entitlement with respect to the applicable Book-Entry Note), agrees to
treat the Class A Notes for all purposes as indebtedness of the Issuer.

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ARTICLE III

COVENANTS

     SECTION 3.1. Payment of Principal, Interest and Other Amounts. The Issuer will duly
and punctually pay (or will cause to be duly and punctually paid) the principal of and interest on
the Class A Notes in accordance with the terms of the Class A Notes and this Indenture. Without
limiting the foregoing, the Indenture Trustee shall, pursuant to Section 5.01 of the Sale and
Servicing Agreement, distribute (a) all amounts on deposit in the Payment Account on each Payment
Date and (b) all amounts on deposit in the Auction Proceeds Account on the Mandatory Auction
Payment Date, deposited therein pursuant to the Auction Administration Agreement, and held therein
for distribution to the Class A Noteholders and the Insurer for the benefit of such Class A
Noteholders and the Insurer. In addition, the Indenture Trustee shall distribute any amounts from
Revolving Period Funding Account as provided in Section 5.06 of the Sale and Servicing Agreement.
Amounts properly withheld under the Code by any Person from a payment to any Class A Noteholder of
interest and/or principal shall be considered as having been paid by the Issuer to such Class A
Noteholder for all purposes of this Indenture.

     The Class A Notes shall be non-recourse obligations of the Issuer and shall be limited in
right of payment to amounts available from the Trust Estate, as provided in this Indenture. The
Issuer shall not otherwise be liable for payments on the Class A Notes. If any other provision of
this Indenture shall be deemed to conflict with the provisions of this Section 3.1, the provisions
of this Section 3.1 shall control.

     SECTION 3.2. Maintenance of Office or Agency. The Issuer will maintain an office or
agency where Class A Notes may be surrendered for registration of transfer or exchange, and where
notices and demands to or upon the Issuer in respect of the Class A Notes and this Indenture may be
served. The Issuer hereby initially appoints the Indenture Trustee to serve as its agent for the
foregoing purposes and to serve as Paying Agent with respect to the Class A Notes. If at any time
the Issuer shall fail to maintain any such office or agency or shall fail to furnish the Indenture
Trustee with the address thereof, such surrenders may be made at DTC Transfer Agent Services, 55
Water Street, Jeanette Park Entrance, New York, New York 10041 and any such notices and demands may
be made or served at the Corporate Trust Office, and the Issuer hereby appoints the Indenture
Trustee as its agent to receive all such surrenders, notices and demands.

     SECTION 3.3. Money for Payments To Be Held in Trust. As provided in Section 8.2(a)
and (b), all payments of amounts due and payable with respect to any Class A Notes that are to be
remitted from amounts withdrawn from the Accounts pursuant to Section 8.2(c) shall be made on
behalf of the Issuer by the Indenture Trustee or by the Paying Agent, and no amounts so withdrawn
from the Accounts for payments on the Class A Notes shall be paid over to the Issuer except as
provided in this Section 3.3.

     Any Paying Agent shall be appointed by Issuer Order with written notice thereof to the
Indenture Trustee. Any Paying Agent appointed by the Issuer shall be a Person who would be
eligible to be Indenture Trustee hereunder as provided in Section 6.11 hereof. The Issuer shall

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not appoint any Paying Agent (other than the Indenture Trustee), which is not, at the time of
such appointment, a Depository Institution.

     The Issuer will cause each Paying Agent to execute and deliver to the Indenture Trustee an
instrument in which such Paying Agent shall agree with the Indenture Trustee (and if the Indenture
Trustee acts as Paying Agent, it hereby so agrees), subject to the provisions of this Section 3.3,
that such Paying Agent will:

     (i) hold all sums held by it for the payment of amounts due with respect to the Class A
Notes in trust for the benefit of the Persons entitled thereto until such sums shall be paid
to such Persons or otherwise disposed of as herein provided and pay such sums to such
Persons as herein provided;

     (ii) give the Indenture Trustee and the Insurer notice of any default by the Issuer (or
any other obligor upon the Class A Notes) of which it has actual knowledge in the making of
any payment required to be made with respect to the Class A Notes;

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

     (iv) immediately resign as a Paying Agent and forthwith pay to the Indenture Trustee
all sums held by it in trust for the payment of Class A Notes or to the Insurer if at any
time it ceases to meet the standards required to be met by a Paying Agent at the time of its
appointment; and

     (v) comply with all requirements of the Code with respect to the withholding from any
payments made by it on any Class A Notes of any applicable withholding taxes imposed thereon
and with respect to any applicable reporting requirements in connection therewith; provided,
however, that with respect to withholding and reporting requirements applicable to original
issue discount (if any) on the Class A Notes, the Issuer shall have first provided the
calculations pertaining thereto to the Indenture Trustee.

     The Issuer may at any time, for the purpose of obtaining the satisfaction and discharge of
this Indenture or for any other purpose, by Issuer Order direct any Paying Agent to pay to the
Indenture Trustee all sums held in trust by such Paying Agent, such sums to be held by the
Indenture Trustee upon the same terms as those upon which the sums were held by such Paying Agent;
and upon such payment by any Paying Agent to the Indenture Trustee, such Paying Agent shall be
released from all further liability with respect to such money.

     Any termination and release of a Trust Estate shall be done in accordance with the provisions
of Section 8.01 of the Sale and Servicing Agreement.

     SECTION 3.4. Existence.

     (a)      Subject to Section 3.4(b) below, the Issuer will keep in full effect its existence, rights
and franchises as a statutory trust under the laws of the State of Delaware (unless it

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becomes, or any successor Issuer hereunder is or becomes, organized under the laws of any
other State or of the United States of America, in which case the Issuer will keep in full effect
its existence, rights and franchises under the laws of such other jurisdiction) and will obtain and
preserve its qualification to do business in each jurisdiction in which such qualification is or
shall be necessary to protect the validity and enforceability of this Indenture, the Class A Notes
and the Trust Estate.

     (b)      Any successor to the Owner Trustee appointed pursuant to Section 10.2 of the Trust
Agreement shall be the successor Owner Trustee under this Indenture without the execution or filing
of any paper, instrument or further act to be done on the part of the parties hereto.

     (c)      Upon any consolidation or merger of or other succession to the Owner Trustee, the Person
succeeding to the Owner Trustee under the Trust Agreement may exercise every right and power of the
Owner Trustee under this Indenture with the same effect as if such Person had been named as the
Owner Trustee herein.

     SECTION 3.5. Protection of Trust Estate. The Issuer will from time to time execute
and deliver all such supplements and amendments hereto and all such financing statements,
continuation statements, instruments of further assurance and other instruments, and will take such
other action necessary or advisable to:

     (i) provide further assurance with respect to a Grant of all or any portion of the
related Trust Estate;

     (ii) maintain or preserve the lien and security interest (and the priority thereof) of
this Indenture or carry out more effectively the purposes hereof;

     (iii) perfect, publish notice of or protect the validity of any Grant made or to be
made by this Indenture;

     (iv) enforce any rights with respect to the Trust Estate; or

     (v) preserve and defend title to the Trust Estate and the rights of the Indenture
Trustee, the Insurer and the Class A Noteholders in such Trust Estate against the claims of
all persons and parties.

     SECTION 3.6. Annual Opinions as to the Trust Estate.

     Within 90 days after the Issuer’s fiscal year end, beginning with the year 2005, the Issuer
shall furnish to the Indenture Trustee and the Insurer an Opinion of Counsel either stating that,
in the opinion of such counsel, such action has been taken with respect to the recording, filing,
re-recording and refiling of this Indenture, any indentures supplemental hereto and any other
requisite documents and with respect to the execution and filing of any financing statements and
continuation statements as is necessary to maintain perfection of the lien and security interest
created by this Indenture and reciting the details of such action or stating that in the opinion of
such counsel no such action is necessary to maintain the perfection of such lien and security
interest. Such Opinion of Counsel shall also describe the recording, filing, re-recording and

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refiling of this Indenture, any indentures supplemental hereto and any other requisite
documents and the execution and filing of any financing statements and continuation statements that
will, in the opinion of such counsel, be required to maintain perfection of the lien and security
interest of this Indenture.

     SECTION 3.7. Performance of Obligations; Servicing of Mortgage Loans.

     (a)      The Issuer will not take any action and will use its best efforts not to permit any action
to be taken by others that would release any Person from any of such Person’s covenants or
obligations under any instrument or agreement included in the Trust Estate or that would result in
the amendment, hypothecation, subordination, termination or discharge of, or impair the validity or
effectiveness of, any such instrument or agreement, except as expressly provided in this Indenture,
the Sale and Servicing Agreement or such other instrument or agreement.

     (b)      The Issuer may contract with or otherwise obtain the assistance of other Persons to assist
it in performing its duties under this Indenture, and any performance of such duties by a Person
identified to the Indenture Trustee in an Officer’s Certificate of the Issuer shall be deemed to be
action taken by the Issuer. Initially, the Issuer has contracted with the Administrator to assist
the Issuer in performing its duties under this Indenture.

     (c)      The Issuer will punctually perform and observe all of its obligations and agreements
contained in this Indenture, the Transaction Documents and in the instruments and agreements
included in the Trust Estate, including but not limited to filing or causing to be filed all UCC
financing statements and continuation statements required to be filed by the terms of this
Indenture and the Sale and Servicing Agreement in accordance with and within the time periods
provided for in this Indenture and/or the Sale and Servicing Agreement, as applicable. Except as
otherwise expressly provided therein, the Issuer shall not waive, amend, modify, supplement or
terminate any Transaction Document or any provision thereof without the consent of the Indenture
Trustee (as to the Transaction Documents to which the Indenture Trustee is a party), the Insurer
and the Holders of at least a majority of the Outstanding Amount of the Class A Notes.

     (d)      Subject to the terms of the Sale and Servicing Agreement, if the Issuer, as holder of the
Mortgage Loans, shall have knowledge of the occurrence of an Event of Servicing Termination under
the Sale and Servicing Agreement, the Issuer shall promptly notify the Indenture Trustee, the
Seller, the Depositor, the Insurer and the Rating Agencies thereof, and shall specify in such
notice the action, if any, the Servicer is taking with respect of such default. If such an Event
of Servicing Termination shall arise from the failure of the Servicer to perform any of its duties
or obligations under the Sale and Servicing Agreement with respect to the Mortgage Loans, the
Issuer, as holder of the Mortgage Loans, shall take all reasonable steps available to it to remedy
or cause to be remedied such failure.

     (e)      Without derogating from the absolute nature of the assignment granted to the Indenture
Trustee under this Indenture or the rights of the Indenture Trustee hereunder, the Issuer agrees
(i) that it will not, without the prior written consent of the Indenture Trustee (acting at the
direction of the holders of at least 51% of the Outstanding Amount of Class A Notes) and the
Insurer (which consent shall not be unreasonably withheld), amend, modify, waive, supplement,

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terminate or surrender, or agree to any amendment, modification, supplement, termination,
waiver or surrender of, the terms of the Trust Estate (except to the extent otherwise provided in
the Sale and Servicing Agreement or the other Transaction Documents); and (ii) that any such
amendment shall not (A) increase or reduce in any manner the amount of, or accelerate or delay the
timing of, distributions that are required to be made for the benefit of the Class A Noteholders or
(B) reduce the percentage of the Class A Notes, set forth in Section 9.2, that is required to
consent to any such amendment, without the consent of the Holders of all the Outstanding Class A
Notes. If any such amendment, modification, supplement or waiver shall be so consented to by the
Indenture Trustee (acting at the direction of the holders of at least 51% of the Outstanding Amount
of Class A Notes) and the Insurer, the Issuer agrees, promptly following a request by the Indenture
Trustee or the Insurer to do so, to execute and deliver, in its own name and at its own expense,
such agreements, instruments, consents and other documents as the Indenture Trustee or the Insurer
may deem necessary or appropriate in the circumstances.

     SECTION 3.8. Negative Covenants. So long as any Class A Notes are Outstanding, the
Issuer shall not, unless the Insurer otherwise consents in writing:

     (i) except as expressly permitted by this Indenture or the Sale and Servicing
Agreement, sell, transfer, exchange or otherwise dispose of any of the properties or assets
of the Issuer, including those included in the Trust Estate, unless directed to do so by the
Indenture Trustee and consented to by the Insurer;

     (ii) claim any credit on, or make any deduction from the principal or interest payable
in respect of, the Class A Notes (other than amounts properly withheld from such payments
under the Code) or assert any claim against any present or former Class A Noteholder by
reason of the payment of the taxes levied or assessed upon any part of the Trust Estate;

     (iii) engage in any business or activity other than as permitted by the Trust Agreement
or other than in connection with, or relating to, the issuance of Class A Notes pursuant to
this Indenture and the Certificates pursuant to the Trust Agreement, or amend the Trust
Agreement as in effect on the Closing Date other than in accordance with Section 11.1
thereof;

     (iv) issue debt obligations under any other indenture;

     (v) incur or assume any indebtedness or guaranty any indebtedness of any Person, except
for such indebtedness as may be incurred by the Issuer in connection with the issuance of
the Class A Notes pursuant to this Indenture;

     (vi) dissolve or liquidate in whole or in part, or, subject to Section 3.16, merge or
consolidate with any other Person;

     (vii) (A) permit the validity or effectiveness of this Indenture to be impaired, or
permit the lien of this Indenture to be amended, hypothecated, subordinated, terminated or
discharged, or permit any Person to be released from any covenants or obligations with
respect to the Class A Notes under this Indenture except as may be expressly permitted
hereby, (B) permit any lien, charge, excise, claim, security interest, mortgage or other

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encumbrance (other than the lien of this Indenture) to be created on or extend to or
otherwise arise upon or burden the Trust Estate or any part thereof or any interest therein
or the proceeds thereof or (C) permit the lien of this Indenture not to constitute a valid
first priority (other than with respect to any such tax or other lien) security interest in
the Trust Estate;

     (viii) change its name, the location of its chief executive office, the jurisdiction of
its formation, or the type of entity it is, unless it has first (A) taken all actions,
including the making of all filings under the UCC as in effect in all applicable
jurisdictions, as are necessary to maintain and continue the first-priority perfected
security interest of the Indenture Trustee in the Collateral, and (B) delivered to the
Indenture Trustee and the Insurer an Opinion of Counsel acceptable to the Indenture Trustee
and the Insurer that the Issuer has made all filings under the UCC as in effect in all
applicable jurisdictions as are necessary to maintain and continue the first-priority
perfected security interest of the Indenture Trustee in the Collateral; or

     (ix) take any other action or fail to take any action which may (i) cause the Issuer to
be taxable as (a) an association pursuant to Section 7701 of the Code and the corresponding
regulations, (b) a publicly traded partnership taxable as a corporation pursuant to Section
7704 of the Code and corresponding regulations or (c) a taxable mortgage pool pursuant to
Section 7701(i) of the Code and the corresponding regulations or (ii) jeopardize the status
of the Notes as debt for all purposes.

     SECTION 3.9. Annual Statement as to Compliance. The Issuer will deliver to the
Indenture Trustee and the Insurer, no later than March 1 (commencing with the fiscal year 2005), an
Officer’s Certificate stating, as to the Authorized Officer signing such Officer’s Certificate,
that:

     (i) a review of the activities of the Issuer during such year and of its performance
under this Indenture has been made under such Authorized Officer’s supervision; and

     (ii) to the best of such Authorized Officer’s knowledge, based on such review, the
Issuer has complied with all conditions and covenants under this Indenture throughout such
year, or, if there has been a default in its compliance with any such condition or covenant,
specifying each such default known to such Authorized Officer and the nature and status
thereof.

     SECTION 3.10. Covenants of the Issuer (not Covenants of the Owner Trustee).

     All covenants of the Issuer in this Indenture are covenants of the Issuer and are not
covenants of the Owner Trustee. The Owner Trustee is, and any successor Owner Trustee under the
Trust Agreement will be, executing this Indenture solely as Owner Trustee under the Trust Agreement
and not in its respective individual capacity, and in no case whatsoever shall the Owner Trustee or
any such successor Owner Trustee be personally liable on, or for any loss in respect of, any of the
statements, representations, warranties or obligations of the Issuer hereunder, as to all of which
the parties hereto agree to look solely to the property of the Issuer.

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     It is expressly understood and agreed by the parties that (a) this Indenture is executed and
delivered by Wilmington Trust Company, not individually or personally, but solely as Owner Trustee,
in the exercise of the powers and authority conferred and vested in it, pursuant to the Trust
Agreement, (b) each of the representations, undertakings and agreements herein made on the part of
the Trust is made and intended not as personal representations, undertakings and agreements by
Wilmington Trust Company but is made and intended for the purpose for binding only the Trust, (c)
nothing herein contained shall be construed as creating any liability on Wilmington Trust Company,
individually or personally, to perform any covenant either expressed or implied contained herein,
all such liability, if any, being expressly waived by the parties hereto and by any person claiming
by, through or under the parties hereto, and (d) under no circumstances shall Wilmington Trust
Company be personally liable for the payment of any indebtedness or expenses of the Trust or be
liable for the breach or failure of any obligation, representation, warranty or covenant made or
undertaken by the Trust under this Indenture or any other related documents.

     SECTION 3.11. Auction Administration Agreement; Mandatory Auction of the Class A
Notes.

     (a)      Concurrently with the execution and delivery of this Indenture, at the direction of the
Issuer, the Indenture Trustee and the Auction Administrator shall execute and deliver the Auction
Administration Agreement in the forms presented. The Indenture Trustee shall not have any duty to
review or otherwise determine the adequacy of the Auction Administration Agreement.

     (b)      Each Holder of a Class A Note is deemed, by acceptance of such Class A Note, (i) to
authorize the Indenture Trustee and the Auction Administrator to execute and deliver the Auction
Administration Agreement as its agent and (ii) to acknowledge and accept and agree to be bound by
the provisions of the Auction Administration Agreement. The Indenture Trustee under the Auction
Administration Agreement shall be entitled to all protections, indemnification and indemnities
extended to the Indenture Trustee under this Indenture.

     (c)      On the Payment Date in the month prior to the Mandatory Auction Payment Date, the
Indenture Trustee shall give written notice by letter to the Holder of each Class A Note, with a
copy to the Auction Administrator, the Auction Paying Agent, the Transferor and the Insurer,
specifying (i) that the Class A Notes shall be auctioned in accordance with the Auction
Administration Agreement within the eight Business Days prior to the Mandatory Auction Payment Date
and that the Auction Proceeds, if any, shall (upon the Auction Administrator’s receipt thereof in
accordance with Section 2 of the Auction Administration Agreement) be payable to the Holders on the
Mandatory Auction Payment Date, (ii) the Mandatory Auction Payment Date, (iii) the method of
calculating the Par Price payable to such Holder as stated in the Indenture and Section 2 of the
Auction Administration Agreement and (iv) if such Class A Note is not then held in book-entry form,
that such Class A Note should be surrendered to the Indenture Trustee for registration of transfer
to the winning bidder.

     (d)      The Indenture Trustee shall assign the Class A Notes a Class A Note Rate for their
remaining life for each Payment Date after the Mandatory Auction Payment Date equal to

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the rate determined at the Auction pursuant to the Auction Administration Agreement, as
provided to it by the Auction Administrator.

     SECTION 3.12. Restricted Payments. The Issuer shall not, directly or indirectly, (i)
pay any dividend or make any distribution (by reduction of capital or otherwise), whether in cash,
property, securities or a combination thereof, to the Owner Trustee or any owner of a beneficial
interest in the Issuer or otherwise with respect to any ownership or equity interest or security in
or of the Issuer or to the Seller or the Depositor, (ii) redeem, purchase, retire or otherwise
acquire for value any such ownership or equity interest or security or (iii) set aside or otherwise
segregate any amounts for any such purpose; provided, however, that the Issuer may make, or cause
to be made (x) distributions to the Indenture Trustee, the Owner Trustee, the Certificateholders,
the Transferor Interest and the Class A Noteholders as contemplated by, and to the extent funds are
available for such purpose under this Indenture, the Sale and Servicing Agreement or the Trust
Agreement. The Issuer will not, directly or indirectly, make or cause to be made payments to or
distributions from the Accounts except in accordance with this Indenture and the Transaction
Documents.

     SECTION 3.13. Treatment of Notes as Debt for All Purposes.

     The Issuer shall treat the Class A Notes as indebtedness for all purposes.

     SECTION 3.14. [Reserved].

     SECTION 3.15. Further Instruments and Acts. Upon request of the Indenture Trustee or
the Insurer, the Issuer will execute and deliver such further instruments and do such further acts
as may be reasonably necessary or proper to carry out more effectively the purpose of this
Indenture.

     SECTION 3.16. Issuer May Consolidate, etc.

     (a)      The Issuer shall not consolidate or merge with or into any other Person, unless:

     (i) the Person (if other than the Issuer) formed by or surviving such consolidation or
merger shall be a Person organized and existing under the laws of the United States of
America or any State or the District of Columbia and shall expressly assume, by an indenture
supplemental hereto, executed and delivered to the Indenture Trustee, in form reasonably
satisfactory to the Insurer, the due and punctual payment of the principal of and interest
on all Class A Notes and to the Paying Agent, on behalf of the Certificateholders, and the
performance or observance of every agreement and covenant of this Indenture on the part of
the Issuer to be performed or observed, all as provided herein;

     (ii) immediately after giving effect to such transaction, no Event of Default shall
have occurred and be continuing;

     (iii) the Insurer shall have consented in writing (which consent shall not be
unreasonably withheld) thereto and each Rating Agency shall have notified the Issuer that

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such transaction will not cause a reduction or withdrawal by a Rating Agency of its
then current rating of the Class A Notes, without regard to the Note Policy;

     (iv) the Issuer shall have received an Opinion of Counsel (and shall have delivered
copies thereof to the Indenture Trustee and the Insurer) to the effect that such transaction
will not have any material adverse tax consequence to the Issuer, any Class A Noteholder or
the Insurer;

     (v) any action that is necessary to maintain the lien and security interest created by
this Indenture, and the perfection thereof, shall have been taken; and

     (vi) the Issuer shall have delivered to the Indenture Trustee and the Insurer an
Officer’s Certificate and an Opinion of Counsel each stating that such consolidation or
merger and such supplemental indenture comply with this Article III and that all conditions
precedent herein provided for relating to such transaction have been complied with
(including any filing required by the Exchange Act).

     (b)      The Issuer shall not convey or transfer its properties or assets, substantially as an
entirety, to any Person, unless:

     (i) (A) the Person that acquires by conveyance or transfer the properties and assets of
the Issuer, the conveyance or transfer of which is hereby restricted, (1) is a United States
citizen or a Person organized and existing under the laws of the United States of America or
any State, (2) expressly assumes, by an indenture supplemental hereto, executed and
delivered to the Indenture Trustee and the Insurer, in form satisfactory to the Insurer, the
due and punctual payment of the principal of and interest on all Class A Notes and the
performance or observance of every agreement and covenant of this Indenture on the part of
the Issuer to be performed or observed, all as provided herein, (3) expressly agrees by
means of such supplemental indenture that all right, title and interest so conveyed or
transferred shall be subject and subordinate to the rights of Holders of the Class A Notes
and the Insurer, (4) unless otherwise provided in such supplemental indenture, expressly
agrees to indemnify, defend and hold harmless the Issuer, the Indenture Trustee and the
Insurer against and from any loss, liability or expense arising under or related to this
Indenture and the Class A Notes and (5) expressly agrees by means of such supplemental
indenture that such Person (or if a group of Persons, then one specified Person) shall make
all filings with the Commission (and any other appropriate Person) required by the Exchange
Act in connection with the Class A Notes;

     (B) immediately after giving effect to such transaction, no Default or Event of
Default shall have occurred and be continuing;

     (C) the Insurer shall have consented thereto, and each Rating Agency shall have
notified the Issuer that such transaction will not cause a reduction or withdrawal
by a Rating Agency of its then current rating of the Class A Notes, without regard
to the Note Policy;

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     (D) the Issuer shall have received an Opinion of Counsel (and shall have
delivered copies thereof to the Indenture Trustee) to the effect that such
transaction will not have any material adverse tax consequence to the Issuer, the
Insurer or any Class A Noteholder;

     (E) any action that is necessary to maintain the lien and security interest
created by this Indenture and the perfection thereof shall have been taken; and

     (F) the Issuer shall have delivered to the Indenture Trustee and the Insurer an
Officer’s Certificate and an Opinion of Counsel each stating that such conveyance or
transfer and such supplemental indenture comply with this Article III and that all
conditions precedent herein provided for relating to such transaction have been
complied with (including any filing required by the Exchange Act); or

     (ii) such conveyance or transfer is made in connection with a termination pursuant to
Section 8.01(b) of the Sale and Servicing Agreement.

     SECTION 3.17. Successor or Transferee.

     (a)      Upon any consolidation or merger of the Issuer in accordance with Section 3.16(a) above,
the Person formed by or surviving such consolidation or merger (if other than the Issuer) shall
succeed to, and be substituted for, and may exercise every right and power of, the Issuer under
this Indenture with the same effect as if such Person had been named as the Issuer herein.

     (b) Upon a conveyance or transfer of the assets and properties of the Issuer pursuant to
Section 3.16(b) above, the Issuer shall be released from every covenant and agreement (except such
obligations that survive such transfer) of this Indenture to be observed or performed on the part
of the Issuer with respect to the Class A Notes immediately upon the delivery of written notice to
the Indenture Trustee of such conveyance or transfer.

     SECTION 3.18. No Other Business. The Issuer shall not engage in any business other
than financing, purchasing, owning, selling and managing the Mortgage Loans and the issuance of the
Class A Notes in the manner contemplated by this Indenture and the Transaction Documents and all
activities incidental thereto.

     SECTION 3.19. No Borrowing. The Issuer shall not issue, incur, assume, guarantee or
otherwise become liable, directly or indirectly, for any indebtedness except for the Class A Notes.

     SECTION 3.20. Guarantees, Loans, Advances and Other Liabilities. Except as
contemplated by this Indenture or the other Transaction Documents, the Issuer shall not make any
loan or advance or credit to, or guarantee (directly or indirectly or by an instrument having the
effect of assuring another’s payment or performance on any obligation or capability of so doing or
otherwise), endorse or otherwise become contingently liable, directly or indirectly, in connection
with the obligations, stocks or dividends of, or own, purchase, repurchase or acquire

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(or agree contingently to do so) any stock, obligations, assets or securities of, or any other
interest in, or make any capital contribution to, any other Person.

     SECTION 3.21. Capital Expenditures. The Issuer shall not make any expenditure (by
long-term or operating lease or otherwise) for capital assets (either realty or personalty).

     SECTION 3.22. Validity of Notes.

     (a)      The Issuer represents and warrants that this Indenture creates a valid and continuing
security interest (as defined in the applicable UCC) in the Collateral in favor of the Indenture
Trustee, which security interest is prior to all other liens, and is enforceable as such as against
creditors of and purchasers from the Issuer.

     (b)      The Issuer represents and warrants that the Issuer owns and has good and marketable title
to the Collateral free and clear of any lien, claim or encumbrance of any Person.

     (c)      The Issuer represents and warrants that the Issuer has caused or will have caused, within
ten days, the filing of all appropriate financing statements in the proper filing office in the
appropriate jurisdictions under applicable law in order to perfect the security interest in the
Collateral granted to the Indenture Trustee hereunder.

     (d)      The Issuer represents and warrants that other than the security interest Granted to the
Indenture Trustee pursuant to this Indenture, the Issuer has not pledged, assigned, sold, granted a
security interest in, or otherwise conveyed any of the Collateral. The Issuer has not authorized
the filing of and is not aware of any financing statements against the Issuer that include a
description of the Collateral other than any financing statement relating to the security interest
Granted to the Indenture Trustee hereunder or that has been terminated. The Issuer is not aware of
any judgment or tax lien filings against the Issuer.

     (e)      The Issuer represents and warrants that the Indenture Trustee on behalf of the Issuer has
in its possession all original copies of the Mortgage Notes that constitute or evidence the
Mortgage Loans. Such Mortgage Notes do not have any marks or notations indicating that they have
been pledged, assigned or otherwise conveyed to any Person other than the Indenture Trustee. All
financing statements filed or to be filed against the Issuer in favor of the Indenture Trustee in
connection herewith describing the Collateral contain a statement to the following effect: “A
purchase of or security interest in any collateral described in this financing statement will
violate the rights of the Indenture Trustee.”

ARTICLE IV

SATISFACTION AND DISCHARGE

     SECTION 4.1. Satisfaction and Discharge of Indenture. Subject to and in accordance
with Section 8.01 of the Sale and Servicing Agreement, this Indenture shall cease to be of further
effect with respect to the Class A Notes (except as to (i) rights of registration of transfer and
exchange, (ii) substitution of mutilated, destroyed, lost or stolen Class A Notes, (iii) rights of
Class A Noteholders to receive payments of principal thereof and interest thereon, (iv) Sections
3.3, 3.4, 3.5, 3.8, 3.10 and 11.17, (v) the rights of the Indenture Trustee, the obligations of the

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Indenture Trustee under Section 4.2 and the immunities of the Indenture Trustee hereunder
(including the rights of the Indenture Trustee under Section 6.7 below) and (vi) the rights of
Class A Noteholders as beneficiaries hereof with respect to the property so deposited with the
Indenture Trustee payable to all or any of them, and the Indenture Trustee, on demand of and at the
expense of the Issuer, shall execute proper instruments acknowledging satisfaction and discharge of
this Indenture with respect to the Class A Notes, when all of the following have occurred:

     (A) either

     (1) all Class A Notes theretofore authenticated and delivered (other
than (i) Class A Notes that have been destroyed, lost or stolen and that
have been replaced or paid as provided in Section 2.4 and (ii) Class A Notes
for whose payment money has theretofore been deposited in trust or
segregated and held in trust by the Issuer and thereafter repaid to the
Issuer or discharged from such trust, as provided in Section 3.3 above) have
been delivered to the Indenture Trustee for cancellation; or

     (2) all Class A Notes not theretofore delivered to the Indenture
Trustee for cancellation

     a.      have become due and payable,

     b.      will become due and payable within one year prior to the
Final Payment Date, or

     c.      are to be called for redemption within one year under
arrangements satisfactory to the Indenture Trustee for the giving of
notice of redemption by the Indenture Trustee in the name, and at the
expense, of the Issuer,

and the Issuer, in the case of a., b. or c. above, has irrevocably deposited or caused to be
irrevocably deposited with the Indenture Trustee cash or non-callable direct obligations of or
obligations guaranteed by the United States of America (which will mature prior to the date such
amounts are payable), in trust for such purpose, in an amount sufficient to pay and discharge the
entire indebtedness on such Class A Notes not theretofore delivered to the Indenture Trustee for
cancellation when due to the Final Payment Date or Redemption Date (if Class A Notes shall have
been called for redemption pursuant to Section 10.1 below) and all amounts due and owing the
Insurer and the Indenture Trustee have been paid, as the case may be;

     (B) the later of (a) payment in full of all outstanding obligations under the
Class A Notes, (b) the payment in full of all unpaid fees and expenses of the
Indenture Trustee hereunder and the other Transaction Documents, (c) the payment of
all amounts due and owing to the Insurer for unpaid premiums and unreimbursed prior
draws made under the Note Policy and all other amounts owing to the Insurer,
together with interest thereon as provided under the Insurance and Indemnity
Agreement, and (d) the date on which the Issuer has paid or caused to be paid all
other sums payable hereunder by the Issuer; and

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     (C) the Issuer has delivered to the Indenture Trustee and the Insurer an
Officer’s Certificate, an Opinion of Counsel and (if required by the TIA or the
Indenture Trustee) an Independent Certificate from a firm of certified public
accountants, each meeting the applicable requirements of Section 11.1(a) below and,
subject to Section 11.2 below, in the case of the Officer’s Certificate and the
Opinion of Counsel, stating that all conditions precedent herein provided for
relating to the satisfaction and discharge of this Indenture with respect to the
Class A Notes have been complied with and, in the case of the Opinion of Counsel,
stating whether an Independent Certificate is required by the TIA.

     SECTION 4.2. Application of Trust Money. All moneys deposited with the Indenture
Trustee pursuant to Sections 3.3 and 4.1 shall be held in trust and applied by it, in accordance
with the provisions of the Sale and Servicing Agreement, to the payment, either directly or through
any Paying Agent to the Holders of the particular Class A Notes and the Insurer for the payment or
redemption of which such moneys have been deposited with the Indenture Trustee, of all sums due and
to become due thereon for principal and interest; but such moneys need not be segregated from other
funds except to the extent required herein or in the Sale and Servicing Agreement or required by
law.

     SECTION 4.3. Subrogation and Cooperation.

     (a)      The Issuer and the Indenture Trustee acknowledge that (i) to the extent the Insurer makes
payments under the Note Policy, the Insurer will be fully subrogated to the rights of the Class A
Noteholders to receive principal of and interest on the Mortgage Loans of the Trust Estate, and
(ii) the Insurer shall be paid such principal and interest only from the sources and in the manner
provided herein and in the Insurance and Indemnity Agreement for the payment of such amounts.

     The Indenture Trustee shall cooperate in all respects with any reasonable request or direction
by the Insurer for action to preserve or enforce the Insurer’s rights or interest under this
Indenture or the Insurance and Indemnity Agreement, consistent with this Indenture and without
limiting the rights of the Class A Noteholders as otherwise set forth in the Indenture, including
without limitation upon the occurrence and continuance of an Insurer Default, a request to take any
one or more of the following actions, to the extent not provided for herein, at the expense of the
Insurer:

     (i) institute Proceedings for the collection of all amounts then payable on the Class A
Notes or under this Indenture in respect to the Class A Notes and all amounts payable under
the Insurance and Indemnity Agreement and to enforce any judgment obtained and collect from
the Issuer monies adjudged due;

     (ii) sell the Trust Estate or any portion thereof or rights or interest therein, at one
or more public or private sales called and conducted in any manner permitted by law;

     (iii) file or record all assignments that have not previously been recorded (if an
Event of Default has occurred and is continuing);

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     (iv) institute Proceedings from time to time for the complete or partial foreclosure of
this Indenture; and

     (v) exercise any remedies of a secured party under the UCC and take any other
appropriate action to protect and enforce the rights and remedies of the Insurer hereunder.

     Following the payment in full of the Class A Notes, the Insurer shall continue to have all
rights and privileges provided to it under this Section 4.3 and in all other provisions of this
Indenture, until all amounts owing to the Insurer have been paid in full.

     (b)      Notwithstanding anything in this Indenture or any Transaction Document, the Transferor may
replace the Insurer if the financial strength of the Insurer is not rated in the highest rating
category by each of the Rating Agencies.

     SECTION 4.4. Repayment of Moneys Held by Paying Agent. In connection with the
satisfaction and discharge of this Indenture with respect to the Class A Notes, all moneys then
held by any Paying Agent other than the Indenture Trustee under the provisions of this Indenture
with respect to such Class A Notes shall, upon demand of the Issuer, be paid to the Indenture
Trustee to be held and applied according to Section 3.3 above and thereupon such Paying Agent shall
be released from all further liability with respect to such moneys.

ARTICLE V

REMEDIES

     SECTION 5.1. Events of Default. “Event of Default,” wherever used herein,
means with respect to the Class A Notes any one of the following events (whatever the reason for
such Event of Default and whether it shall be voluntary or involuntary or be effected by operation
of law or pursuant to any judgment, decree or order of any court or any order, rule or regulation
of any administrative or governmental body):

     (a)      default in the payment of any interest on any Class A Note when the same becomes due and
payable, and continuance of such default for a period of five (5) days; or

     (b)      default in the payment in full of the principal of the Class A Note Principal Balance on
the Final Payment Date; or

     (c)      default in the observance or performance of any covenant or agreement of the Issuer made
in this Indenture (other than a covenant or agreement, a default in the observance or performance
of which is elsewhere in this Section 5.1 specifically dealt with), or any representation or
warranty of the Issuer made in this Indenture, the Sale and Servicing Agreement or in any
certificate or other writing delivered pursuant hereto or in connection herewith proving to have
been incorrect in any material respect as of the time when the same shall have been made, and such
default shall continue or not be cured, or the circumstance or condition in respect of which such
misrepresentation or warranty was incorrect shall not have been eliminated or otherwise cured, for
a period of 30 days after there shall have been given, by registered or certified mail, to the
Issuer by the Indenture Trustee or to the Issuer and the Indenture Trustee by the Insurer or the
Holders of at least 51% of the Outstanding Amount of the

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Class A Notes, a written notice specifying such default or incorrect representation or
warranty and requiring it to be remedied and stating that such notice is a notice of Default
hereunder; or

     (d)      [reserved]; or

     (e)      the filing of a decree or order for relief by a court having jurisdiction in the premises
in respect of the Issuer or any substantial part of the Trust Estate in an involuntary case under
any applicable federal or state bankruptcy, insolvency or other similar law now or hereafter in
effect, or appointing a receiver, liquidator, assignee, custodian, trustee, sequestrator or similar
official of the Issuer or for any substantial part of the Trust Estate, or ordering the winding up
or liquidation of the Issuer’s affairs, and such decree or order shall remain unstayed and in
effect for a period of 90 consecutive days; or

     (f)      the commencement by the Issuer of a voluntary case under any applicable federal or state
bankruptcy, insolvency or other similar law now or hereafter in effect, or the consent by the
Issuer to the entry of an order for relief in an involuntary case under any such law, or the
consent by the Issuer to the appointment or taking possession by a receiver, liquidator, assignee,
custodian, trustee, sequestrator or similar official of the Issuer or for any substantial part of
the Trust Estate, or the making by the Issuer of any general assignment for the benefit of
creditors, or the failure by the Issuer generally to pay its debts as such debts become due, or the
taking of any action by the Issuer in furtherance of any of the foregoing.

     The Issuer shall deliver to the Indenture Trustee, the Transferor and the Insurer within five
days after the occurrence thereof, written notice in the form of an Officer’s Certificate of any
event which with the giving of notice and the lapse of time would become an Event of Default under
clause (c) above, its status and what action the Issuer is taking or proposes to take with respect
thereto.

     SECTION 5.2. Acceleration of Maturity; Rescission and Annulment. If an Event of
Default should occur and be continuing of which a Responsible Officer of the Indenture Trustee has
actual knowledge, then and in every such case the Indenture Trustee may, or, at the direction of
the Insurer or upon the prior written direction of the Holders of Class A Notes representing not
less than 51% of the Outstanding Amount of the Class A Notes, with the written consent of the
Insurer, the Indenture Trustee shall declare all the Class A Notes to be immediately due and
payable, by a notice in writing to the Issuer (and to the Indenture Trustee if given by Class A
Noteholders), and upon any such declaration the unpaid principal amount of such Class A Notes,
together with accrued and unpaid interest thereon through the date of acceleration, shall become
immediately due and payable.

     At any time after such declaration of acceleration of maturity has been made and before a
judgment or decree for payment of the money due has been obtained by the Indenture Trustee as
hereinafter in this Article V provided, the Insurer or the Holders of Class A Notes representing
51% of the Outstanding Amount of the related Class A Notes, with the written consent of the
Insurer, by written notice to the Issuer and the Indenture Trustee, may rescind and annul such
declaration and its consequences if:

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     (a)      the Issuer has paid or deposited with the Indenture Trustee a sum sufficient to pay:

     1.      all payments of principal of and interest on all Class A Notes and all other amounts
that would then be due hereunder or upon such Class A Notes and to the Insurer if the Event
of Default giving rise to such acceleration had not occurred; and

     2.      all sums paid or advanced by the Indenture Trustee hereunder and the compensation,
expenses, disbursements and advances of the Indenture Trustee and its agents and counsel;
and

     (b)      all Events of Default, other than the nonpayment of the principal of the Class A Notes
that has become due solely by such acceleration, have been cured or waived as provided in Section
5.12 below.

     No such rescission shall affect any subsequent default or impair any right consequent thereto.

     SECTION 5.3. Collection of Indebtedness and Suits for Enforcement by Indenture
Trustee.

     (a)      The Issuer covenants that if (i) default occurs in the payment of any interest on any
Class A Note when the same becomes due and payable, and such default continues for a period of five
(5) days, or (ii) default occurs in the payment of the principal of or any installment of the
principal of any Class A Note when the same becomes due and payable, and such default continues for
a period of five (5) days, the Issuer will, upon demand of the Indenture Trustee or the Insurer if
the Insurer has made a payment under the Note Policy, pay to the Indenture Trustee or the Insurer,
as applicable, for the benefit of the Holders of the Class A Notes, the whole amount then due and
payable on such Class A Notes for principal and interest, with interest upon the overdue principal
and, to the extent payment at such rate of interest shall be legally enforceable, upon overdue
installments of interest at the rate borne by the Class A Notes and in addition thereto such
further amount as shall be sufficient to cover the costs and expenses of collection, including the
compensation, expenses, disbursements and advances of the Indenture Trustee, the Insurer and its
agents and counsel.

     (b)      In case the Issuer shall fail forthwith to pay such amounts upon such demand, the
Indenture Trustee may, and shall at the direction of the Insurer, institute a Proceeding for the
collection of the sums so due and unpaid, and may prosecute such Proceeding to judgment or final
decree, and may enforce the same against the Issuer or other obligor upon such Class A Notes and
collect in the manner provided by law out of the property of the Issuer or other obligor upon such
Class A Notes, wherever situated, the moneys adjudged or decreed to be payable.

     (c)      If an Event of Default occurs and is continuing, the Indenture Trustee may, with the
consent of the Insurer, and shall at the written direction of the Insurer or of the Holders of 51%
or more of the Outstanding Amount of the Class A Notes, with the consent of the Insurer, as more
particularly provided in Section 5.4 below, proceed to protect and enforce its rights and the
rights of the Class A Noteholders and the Insurer, by such appropriate Proceedings as the Insurer
shall deem most effective to protect and enforce any such rights whether for the specific

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enforcement of any covenant or agreement in this Indenture or in aid of the exercise of any
power granted herein, or to enforce any other proper remedy or legal or equitable right vested in
the Indenture Trustee by this Indenture or by law.

     (d)      In case there shall be pending, relative to the Issuer or any other obligor upon the Class
A Notes or any Person having or claiming an ownership interest in the Trust Estate, Proceedings
under Title 11 of the United States Code or any other applicable federal or state bankruptcy,
insolvency or other similar law, or in case a receiver, assignee or trustee in bankruptcy or
reorganization, liquidator, sequestrator or similar official shall have been appointed for or taken
possession of the Issuer or its property or such other obligor or Person, or in case of any other
comparable judicial Proceedings relative to the Issuer or other obligor upon the Class A Notes, or
to the creditors or property of the Issuer or such other obligor, the Indenture Trustee,
irrespective of whether the principal of any Class A Notes shall then be due and payable as therein
expressed or by declaration or otherwise and irrespective of whether the Indenture Trustee shall
have made any demand pursuant to the provisions of this Section 5.3, shall be entitled and
empowered by intervention in such Proceedings with the consent of or at the direction of the
Insurer or otherwise:

     (i) to file and prove a claim or claims for the whole amount of principal and interest
owing and unpaid in respect of the Class A Notes and the Insurer and to file such other
papers or documents as may be necessary or advisable in order to have the claims of the
Indenture Trustee (including any claim for compensation and expenses to the Indenture
Trustee, each predecessor Indenture Trustee and its agents, attorneys and counsel, and for
reimbursement of all expenses and liabilities incurred, and all advances made, by the
Indenture Trustee and each predecessor Indenture Trustee (except as a result of negligence
or bad faith), and of the Class A Noteholders and the Insurer allowed in such Proceedings;

     (ii) unless prohibited by applicable law and regulations, to vote on behalf of the
Holders of Class A Notes and the Insurer in any election of a trustee, a standby trustee or
Person performing similar functions in any such Proceedings;

     (iii) to collect and receive any moneys or other property payable or deliverable on any
such claims and to distribute all amounts received with respect to the claims of the Class A
Noteholders, the Indenture Trustee and the Insurer on their behalf; and

     (iv) to file such proofs of claim and other papers or documents as may be necessary or
advisable in order to have the claims of the Indenture Trustee, the Insurer or the Holders
of Class A Notes allowed in any judicial proceedings relative to the Issuer, its creditors
and its property; and any trustee, receiver, liquidator, custodian or other similar official
in any such Proceeding is hereby authorized by each of such Class A Noteholders to make
payments to the Indenture Trustee and, in the event that the Indenture Trustee shall consent
to the making of payments directly to such Class A Noteholders, to pay to the Indenture
Trustee such amounts as shall be sufficient to cover compensation and expenses to the
Indenture Trustee, each predecessor Indenture Trustee and their respective agents, attorneys
and counsel, and all other expenses and liabilities incurred,

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and all advances made, by the Indenture Trustee and each predecessor Indenture Trustee
except as a result of negligence or bad faith.

     (e)      Nothing herein contained shall be deemed to authorize the Indenture Trustee to authorize
or consent to or vote for or accept or adopt on behalf of any Class A Noteholder or the Insurer any
plan of reorganization, arrangement, adjustment or composition affecting the Class A Notes or the
rights of any Holder thereof or to authorize the Indenture Trustee to vote in respect of the claim
of any Class A Noteholder or the Insurer in any such proceeding except, as aforesaid, to vote for
the election of a trustee in bankruptcy or similar Person.

     (f)      All rights of action and of asserting claims under this Indenture, or under any of the
Class A Notes, may be enforced by the Indenture Trustee without the possession of any of the Class
A Notes or the production thereof in any trial or other Proceedings relative thereto, and any such
action or Proceedings instituted by the Indenture Trustee shall be brought in its own name as
trustee of an express trust, and any recovery of judgment, subject to the payment of the expenses,
disbursements and compensation of the Indenture Trustee, each predecessor Indenture Trustee and
their respective agents and attorneys, shall be for the ratable benefit of the Holders of the Class
A Notes.

     (g)      In any Proceedings brought by the Indenture Trustee (and also any Proceedings involving
the interpretation of any provision of this Indenture to which the Indenture Trustee shall be a
party), the Indenture Trustee shall be held to represent all the Class A Noteholders, and it shall
not be necessary to make any Class A Noteholder a party to any such Proceedings.

     SECTION 5.4. Remedies; Priorities.

     (a)      If an Event of Default shall have occurred and be continuing of which a Responsible
Officer of the Indenture Trustee has actual knowledge, the Indenture Trustee may with the consent
of the Insurer, or, at the direction of the Insurer, shall or, if an Insurer Default shall be
continuing, at the direction of 51% of the Holders of the Class A Notes shall, do one or more of
the following (subject to Section 5.5 below):

     (i) institute Proceedings in its own name and as trustee of an express trust for the
collection of all amounts then payable on the related Class A Notes or under this Indenture
with respect thereto, whether by declaration or otherwise, and all amounts payable under the
Insurance and Indemnity Agreement, enforce any judgment obtained, and collect from the
Issuer and any other obligor upon such Class A Notes moneys adjudged due;

     (ii) institute Proceedings from time to time for the complete or partial foreclosure of
this Indenture with respect to the Trust Estate;

     (iii) exercise any remedies of a secured party under the UCC and take any other
appropriate action to protect and enforce the rights and remedies of the Indenture Trustee
or the Class A Noteholders or the Insurer; and

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     (iv) sell the Trust Estate or any portion thereof or rights or interest therein in a
commercially reasonable manner, at one or more public or private sales called and conducted
in any manner permitted by law;

provided, however, that the Indenture Trustee may not sell or otherwise liquidate the Trust Estate
following an Event of Default, unless (A) the Indenture Trustee obtains the consent of the Insurer
and the Holders of 100% of the Outstanding Amount of the Class A Notes, (B) the proceeds of such
sale or liquidation distributable to the Class A Noteholders are sufficient to discharge in full
all amounts then due and unpaid upon such Class A Notes for principal and interest and to reimburse
the Insurer for any unreimbursed Insured Payments and any other amounts due the Insurer under the
Insurance and Indemnity Agreement or (C) the Indenture Trustee determines that the Trust Estate
will not continue to provide sufficient funds for the payment of principal of and interest on the
Class A Notes as they would have become due if the Class A Notes had not been declared due and
payable, and the Indenture Trustee obtains the consent of the Insurer and the Holders of 66 2/3% of
the Outstanding Amount of the Class A Notes. In determining such sufficiency or insufficiency with
respect to clauses (B) and (C) above, the Indenture Trustee may, but need not, obtain and rely upon
an opinion of an Independent investment banking or accounting firm of national reputation as to the
feasibility of such proposed action and as to the sufficiency of the Trust Estate for such purpose.

     (b)      If the Indenture Trustee collects any money or property pursuant to this Article V, the
Indenture Trustee and the Paying Agent shall pay out the money or property in the following order:

     FIRST: to the Indenture Trustee, the Indenture Trustee Fee and for any costs or
expenses incurred by it in connection with the enforcement of the remedies provided for in
this Article V;

     SECOND: any premium owing to the Insurer and any unpaid premiums, with interest
thereon at the Late Payment Rate;

     THIRD: to the Class A Noteholders for amounts due and unpaid on the Class A Notes
for interest pro rata among the Holders of the Class A Notes, according to the amounts due
and payable on such Class A Notes;

     FOURTH: to the Class A Noteholders for amounts due and unpaid on the Class A Notes
for principal, pro rata, among the Holders of the Class A Notes according to the amounts
due and payable until the Class A Note Principal Balance is reduced to zero;

     FIFTH: to the Insurer, as reimbursement for prior draws made under the Note Policy,
with interest thereon at the Late Payment Rate;

     SIXTH: to the Indenture Trustee for any other amounts then due and outstanding; and

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     SEVENTH: to the Paying Agent under the Trust Agreement, as applicable, for any
amounts to be distributed to the Certificateholders or the holder of the Transferor
Interest, in the manner set forth in Section 5.01 of the Sale and Servicing Agreement.

     The Indenture Trustee may fix a record date and payment date for any payment to be made to the
Class A Noteholders pursuant to this Section 5.4. At least 15 days before such record date, the
Indenture Trustee shall, at the expense of the Trust Estate, mail to each Class A Noteholder and
the Issuer a notice that states the record date, the payment date and the amount to be paid.

     SECTION 5.5. Optional Preservation of the Trust Estate. If the Class A Notes have
been declared to be due and payable under Section 5.2 above following an Event of Default and such
declaration and its consequences have not been rescinded and annulled, the Indenture Trustee may
with the consent of the Insurer, but need not (but shall at the written direction of the Insurer),
elect to maintain possession of the Trust Estate. It is the desire of the parties hereto and the
Class A Noteholders that there be at all times sufficient funds for the payment of principal of and
interest on the Class A Notes, and the Indenture Trustee shall take such desire into account when
determining whether or not to maintain possession of the Trust Estate. In determining whether to
maintain possession of the Trust Estate, the Indenture Trustee may, but need not, obtain and rely
upon an opinion of an Independent investment banking or accounting firm of national reputation as
to the feasibility of such proposed action and as to the sufficiency of the Trust Estate for such
purpose.

     SECTION 5.6. Limitation of Suits. No Holder of any Class A Note shall have any right
to institute any Proceeding, judicial or otherwise, with respect to this Indenture or for the
appointment of a receiver or trustee, or for any other remedy hereunder, unless the Insurer has
otherwise consented in writing thereto and:

     (a)      such Holder has previously given written notice to the Indenture Trustee of a continuing
Event of Default;

     (b)      the Holders of not less than 25% of the Outstanding Amount of the Class A Notes have made
written request to the Indenture Trustee to institute such Proceeding in respect of such Event of
Default in its own name as Indenture Trustee hereunder;

     (c)      such Holder or Holders have offered to the Indenture Trustee indemnity satisfactory to it
against the costs, expenses and liabilities to be incurred in complying with such request;

     (d)      the Indenture Trustee for 60 days after its receipt of such notice, request and offer of
indemnity has failed to institute such Proceedings; and

     (e)      no direction inconsistent with such written request has been given to the Indenture
Trustee during such 60 day period by the Holders of a majority of the Outstanding Amount of the
Class A Notes.

     It is understood and intended that no Class A Noteholders shall have any right in any manner
whatever by virtue of, or by availing of, any provision of this Indenture to affect, disturb

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or prejudice the rights of any other Class A Noteholders or to obtain or to seek to obtain
priority or preference over any other Holders or to enforce any right under this Indenture, except
in the manner herein provided.

     SECTION 5.7. Unconditional Rights of Class A Noteholders To Receive Principal and
Interest. Notwithstanding any other provisions in this Indenture, the Holder of any Class A
Note shall have the right, which is absolute and unconditional, to receive payment of the principal
of and interest, if any, on such Class A Note on or after the respective due date thereof expressed
in such Class A Note or in this Indenture (or, in the case of redemption, on or after the
Redemption Date) to the extent funds are available therefor out of the Trust Estate and to
institute suit for the enforcement of any such payment, and such right shall not be impaired
without the consent of such Holder.

     SECTION 5.8. Restoration of Rights and Remedies. If the Indenture Trustee or any
Class A Noteholder has instituted any Proceeding to enforce any right or remedy under this
Indenture and such Proceeding has been discontinued or abandoned for any reason or has been
determined adversely to the Indenture Trustee or to such Class A Noteholder, then and in every such
case the Issuer, the Indenture Trustee and the Class A Noteholders shall, subject to any
determination in such Proceeding, be restored severally and respectively to their former positions
hereunder, and thereafter all rights and remedies of the Indenture Trustee and the Class A
Noteholders shall continue as though no such Proceeding had been instituted.

     SECTION 5.9. Rights and Remedies Cumulative. No right or remedy herein conferred upon
or reserved to the Indenture Trustee, the Insurer or to the Class A Noteholders is intended to be
exclusive of any other right or remedy, and every right and remedy shall, to the extent permitted
by law, be cumulative and in addition to every other right and remedy given hereunder or now or
hereafter existing at law or in equity or otherwise. The assertion or employment of any right or
remedy hereunder, or otherwise, shall not prevent the concurrent assertion or employment of any
other appropriate right or remedy.

     SECTION 5.10. Delay or Omission Not a Waiver. No delay or omission of the Indenture
Trustee, the Insurer or any Class A Noteholder to exercise any right or remedy accruing upon any
Default or Event of Default shall impair any such right or remedy or constitute a waiver of any
such Default or Event of Default or an acquiescence therein. Every right and remedy given by this
Article V or by law to the Indenture Trustee, the Insurer or to the Class A Noteholders may be
exercised from time to time, and as often as may be deemed expedient, by the Indenture Trustee, the
Insurer or by the Class A Noteholders, as the case may be.

     SECTION 5.11. Control by Class A Noteholders. The Insurer (so long as no Insurer
Default exists) or if an Insurer Default exists the Holders of 51% of the Outstanding Amount of the
Class A Notes, shall have the right to direct the time, method and place of conducting any
Proceeding for any remedy available to the Indenture Trustee with respect to the Class A Notes or
exercising any trust or power conferred on the Indenture Trustee; provided that:

     (a)      such direction shall not be in conflict with any rule of law or with this Indenture;

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     (b)      [reserved];

     (c)      if the conditions set forth in Section 5.5 above have been satisfied and the Indenture
Trustee elects to retain the Trust Estate pursuant to such Section 5.5, then any direction to the
Indenture Trustee by Holders of Class A Notes representing less than 100% of the Outstanding Amount
of the Class A Notes to sell or liquidate the Trust Estate shall be of no force and effect; and

     (d)      the Indenture Trustee may take any other action deemed proper by the Indenture Trustee
that is not inconsistent with such direction.

     Notwithstanding the rights of the Class A Noteholders set forth in this Section 5.11, subject
to Section 6.1 hereof, the Indenture Trustee need not take any action that it determines might
involve it in liability or might materially adversely affect the rights of any Class A Noteholders
not consenting to such action.

     SECTION 5.12. Waiver of Past Defaults. Prior to the declaration of the acceleration
of the maturity of the Class A Notes as provided in Section 5.2 above, the Insurer (so long as no
Insurer Default exists) or the Holders of Class A Notes representing not less than 51% of the
Outstanding Amount of the Class A Notes, with the consent of the Insurer (so long as no Insurer
Default exists), may waive any past Default or Event of Default and its consequences except a
Default (a) in the payment of principal of or interest on any of the Class A Notes or (b) in
respect of a covenant or provision hereof that cannot be modified or amended without the consent of
the Holder of each Class A Note. In the case of any such waiver, the Issuer, the Insurer, the
Indenture Trustee and the Holders of the Class A Notes shall be restored to their former positions
and rights hereunder, respectively; but no such waiver shall extend to any subsequent or other
Default or impair any right consequent thereto.

     Upon any such waiver, such Default shall cease to exist and be deemed to have been cured and
not to have occurred, and any Event of Default arising therefrom shall be deemed to have been cured
and not to have occurred, for every purpose of this Indenture; but no such waiver shall extend to
any subsequent or other Default or Event of Default or impair any right consequent thereto.

     SECTION 5.13. Undertaking for Costs. All parties to this Indenture agree, and each
Holder of any Class A Note by such Holder’s acceptance thereof shall be deemed to have agreed, that
any court may in its discretion require, in any suit for the enforcement of any right or remedy
under this Indenture, or in any suit against the Indenture Trustee for any action taken, suffered
or omitted by it as Indenture Trustee, the filing by any party litigant in such suit of an
undertaking to pay the costs of such suit, and that such court may in its discretion assess
reasonable costs, including reasonable attorneys’ fees, against any party litigant in such suit,
having due regard to the merits and good faith of the claims or defenses made by such party
litigant; but the provisions of this Section shall not apply to (a) any suit instituted by the
Indenture Trustee, (b) any suit instituted by any Class A Noteholder, or group of Class A
Noteholders, in each case holding in the aggregate more than 10% of the Outstanding Amount of the
Class A Notes or (c) any suit instituted by any Class A Noteholder for the enforcement of the
payment of principal of or interest on any Class A Note on or after the respective due dates

38

 

expressed in such Class A Note and in this Indenture (or, in the case of redemption, on or
after the Redemption Date).

     SECTION 5.14. Waiver of Stay or Extension Laws. The Issuer covenants (to the extent
that it may lawfully do so) that it will not at any time insist upon, or plead or in any manner
whatsoever, claim or take the benefit or advantage of, any stay or extension law wherever enacted,
now or at any time hereafter in force, that may affect the covenants or the performance of this
Indenture; and the Issuer (to the extent that it may lawfully do so) hereby expressly waives all
benefit or advantage of any such law, and covenants that it will not hinder, delay or impede the
execution of any power herein granted to the Indenture Trustee, but will suffer and permit the
execution of every such power as though no such law had been enacted.

     SECTION 5.15. Action on Notes. The Indenture Trustee’s right to seek and recover
judgment on the Class A Notes or under this Indenture shall not be affected by the seeking,
obtaining or application of any other relief under or with respect to this Indenture. Neither the
lien of this Indenture nor any rights or remedies of the Indenture Trustee or the Class A
Noteholders shall be impaired by the recovery of any judgment by the Indenture Trustee against the
Issuer or by the levy of any execution under such judgment upon any portion of the Trust Estate or
upon any of the assets of the Issuer. Any money or property collected by the Indenture Trustee
shall be applied in accordance with Section 5.4(b) above.

     SECTION 5.16. Performance and Enforcement of Certain Obligations.

     (a)      Promptly following a request from the Insurer or the Indenture Trustee, with the consent
of the Insurer to do so, the Issuer shall take all such lawful action as the Indenture Trustee or
the Insurer, as applicable, may request to compel or secure the performance and observance by the
Seller, the Servicer and the Depositor, as applicable, of each of their obligations to the Issuer,
under or in connection with the Sale and Servicing Agreement and other Transaction Documents, and
to exercise any and all rights, remedies, powers and privileges lawfully available to the Issuer
under or in connection with the Sale and Servicing Agreement and the other Transaction Documents to
the extent and in the manner directed by the Indenture Trustee or the Insurer, as applicable,
including the transmission of notices of default on the part of such parties and the institution of
legal or administrative actions or proceedings to compel or secure performance by such parties of
each of their obligations under the Sale and Servicing Agreement and the other Transaction
Documents.

     (b)      If an Event of Default has occurred and is continuing, the Indenture Trustee, subject to
the rights of the Insurer hereunder and under the Sale and Servicing Agreement, may, and at the
direction of the Insurer or the Holders of 51% of the Outstanding Amount if there is an Insurer
Default shall, exercise all rights, remedies, powers, privileges and claims of the Issuer against
the Depositor, the Servicer or the Seller under or in connection with the Sale and Servicing
Agreement and the other Transaction Documents, as applicable, including the right or power to take
any action to compel or secure performance or observance by such parties, as the case may be, of
each of their obligations to the Issuer thereunder and to give any consent, request, notice,
direction, approval, extension, or waiver under the Sale and Servicing Agreement and the other
Transaction Documents, and any right of the Issuer to take such action shall be suspended.

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ARTICLE VI

THE INDENTURE TRUSTEE

     SECTION 6.1. Duties of Indenture Trustee.

     (a)      If an Event of Default of which a Responsible Officer of the Indenture Trustee has actual
knowledge has occurred and is continuing, the Indenture Trustee shall exercise the rights and
powers vested in it by this Indenture and use the same degree of care and skill in their exercise
as a prudent person would exercise or use under the circumstances in the conduct of such person’s
own affairs.

     (b)      Except during the continuance of an Event of Default:

     (i) the Indenture Trustee undertakes to perform such duties and only such duties as are
specifically set forth in this Indenture and no implied covenants or obligations shall be
read into this Indenture against the Indenture Trustee; and

     (ii) in the absence of bad faith on its part, the Indenture Trustee may conclusively
rely, as to the truth of the statements and the correctness of the opinions expressed
therein, upon certificates or opinions furnished to the Indenture Trustee and conforming to
the requirements of this Indenture on their face and which it believes in good faith to be
genuine and to have been duly executed by the proper Person respecting any matter arising
hereunder.

     (c)      The Indenture Trustee may not be relieved from liability for its own negligent action, its
own negligent failure to act or its own willful misconduct, except that:

     (i) this paragraph does not limit the effect of paragraph (b) of this Section 6.1;

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

     (iii) the Indenture Trustee shall not be liable with respect to any action it takes or
omits to take in good faith in accordance with a direction received by it from the Holders
of at least 51% of the Outstanding Amount of the Class A Notes or any direction from the
Insurer in each case that the Holders or the Insurer, as the case may be are entitled to
give under the terms of the Transaction Documents.

     (d)      The Indenture Trustee shall not be liable for interest on any money received by it except
as the Indenture Trustee may agree in writing with the Issuer.

     (e)      Money held in trust by the Indenture Trustee shall be segregated from other funds except
to the extent permitted by law or the terms of this Indenture or the Sale and Servicing Agreement.

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     (f)      No provision of this Indenture shall require the Indenture Trustee to expend or risk its
own funds or otherwise incur financial liability in the performance of any of its duties hereunder
or in the exercise of any of its rights or powers, if it shall have reasonable grounds to believe
that repayment of such funds or indemnity satisfactory to it against such risk or liability is not
assured to it; and none of the provisions contained in this Indenture shall in any event require
the Indenture Trustee to perform, or be responsible for the manner of performance of, any of the
obligations of the Issuer under this Indenture.

     (g)      [Reserved].

     (h)      Every provision of this Indenture relating to the conduct or affecting the liability of or
affording protection to the Indenture Trustee shall be subject to the provisions of this Section
6.1 and to the provisions of the TIA.

     (i)      Subject to the other provisions of this Indenture and without limiting the generality of
this Section 6.1, the Indenture Trustee shall have no duty (A) to see to any recording, filing, or
depositing of this Indenture or any agreement referred to herein or any financing statement or
continuation statement evidencing a security interest, or to see to the maintenance of any such
recording or filing or depositing or to any rerecording, refiling or redepositing of any thereof,
(B) to see to any insurance, (C) to see to the payment or discharge of any tax, assessment, or
other governmental charge or any lien or encumbrance of any kind owing with respect to, assessed or
levied against, any part of the Trust Estate other than from funds available in the Accounts, (D)
to confirm or verify the contents of any reports or certificates of the Issuer, Insurer, Seller or
Servicer or any other party delivered to the Indenture Trustee pursuant to this Indenture believed
by the Indenture Trustee to be genuine and to have been signed or presented by the proper party or
parties.

     SECTION 6.2. Rights of Indenture Trustee.

     (a)      The Indenture Trustee may conclusively rely and shall be fully protected in acting or
refraining from acting on any resolution, certificate of auditors or any other certificate,
statement, instrument, opinion, report, notice, request, consent, order, appraisal, bond or other
paper or document believed by it to be genuine and to have been signed or presented by the proper
person. The Indenture Trustee need not investigate any fact or matter stated in the document.

     (b)      Before the Indenture Trustee acts or refrains from acting, it may require and shall be
entitled to receive an Officer’s Certificate or an Opinion of Counsel. The Indenture Trustee shall
not be liable for any action it takes or omits to take in good faith in reliance on an Officer’s
Certificate or Opinion of Counsel.

     (c)      The Indenture Trustee may execute any of the trusts or powers hereunder or perform any
duties hereunder either directly or by or through agents or attorneys or a custodian or nominee and
the Indenture Trustee shall not be responsible for any misconduct or negligence on the part of such
agent, attorney, nominee or custodian appointed by the Indenture Trustee with due care.

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     (d)      The Indenture Trustee shall not be liable for any action it takes or omits to take in good
faith which it believes to be authorized or within its rights or powers; provided, however, that
such action or omission by the Indenture Trustee does not constitute willful misconduct, negligence
or bad faith.

     (e)      The Indenture Trustee may consult with counsel, financial advisors or accountants, and the
advice or opinion of counsel, financial advisors or accountants, shall be full and complete
authorization and protection from liability in respect to any action taken, omitted or suffered by
it hereunder in good faith and in accordance with the advice or opinion of such counsel.

     (f)      The Indenture Trustee shall be under no obligation to exercise any of the trusts, rights
or powers vested in it by this Indenture or to institute, conduct or defend any litigation
hereunder or in relation hereto at the request, order or direction of the Insurer or any of the
Class A Noteholders, pursuant to the provisions of this Indenture, unless the Insurer or such Class
A Noteholders shall have offered to the Indenture Trustee security or indemnity satisfactory to it
against the costs, expenses and liabilities which may be incurred therein or thereby; nothing
contained herein shall, however, relieve the Indenture Trustee of the obligation, upon the
occurrence of an Event of Default of which a Responsible Officer of the Indenture Trustee shall
have actual knowledge (which has not been cured), to exercise such of the rights and powers vested
in it by this Indenture, and to use the same degree of care and skill in their exercise, as a
prudent person would exercise or use under the circumstances in the conduct of such person’s own
affairs.

     (g)      The Indenture Trustee shall not be bound to make any investigation into the facts or
matters stated in any resolution, certificate, statement, instrument, opinion, report, notice,
request, consent, order, approval, bond or other paper or document, unless requested in writing to
do so by the Insurer or the Holders of at least 51% of the Outstanding Amount of the Class A Notes;
provided, however, that if the payment within a reasonable time to the Indenture Trustee of the
costs, expenses or liabilities likely to be incurred by it in the making of such investigation is,
in the opinion of the Indenture Trustee, not reasonably assured to the Indenture Trustee by the
security afforded to it by the terms of this Indenture, the Indenture Trustee may require indemnity
satisfactory to it against such cost, expense or liability as a condition to taking any such
action. The reasonable expense of every such examination shall be paid by the party requesting
same.

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

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

     (j)      The Indenture Trustee shall have no liability in connection with the malfeasance or
nonfeasance by the Issuer, the Servicer or the Administrator. The Indenture Trustee shall have no
liability in connection with compliance by the Issuer or the Servicer with statutory or regulatory
requirements related to the Collateral or the Trust Estate. The Indenture Trustee shall

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not make or be deemed to have made any representations or warranties with respect to the
Collateral or the Trust Estate or the validity or sufficiency of any assignment of the Collateral
or the Trust Estate to the Indenture Trustee.

     (k)      In the event that the Indenture Trustee is also acting as Paying Agent or Note Registrar
hereunder or Paying Agent or Registrar under the Amended and Restated Trust Agreement, the rights,
protection, immunities and indemnities afforded to the Indenture Trustee pursuant to this Article
VI shall also be afforded to such Paying Agent or Registrar.

     (l)      Neither the Indenture Trustee nor any of its officers, directors, employees or agents
shall be liable for any action taken or omitted under this Indenture, the Transaction Documents or
in connection therewith except to the extent caused by the Indenture Trustee’s negligence or
willful misconduct, as determined by the final judgment of a court of competent jurisdiction, no
longer subject to appeal or review. The parties each (for itself and any person or entity claiming
through it) hereby releases, waives, discharges, exculpates and covenants not to sue the Indenture
Trustee for any action taken or omitted under this Indenture except to the extent caused by the
Indenture Trustee’s negligence or willful misconduct.

     (m)      The Indenture Trustee shall have no duty to monitor the performance of any other party
hereto, except as otherwise provided for in this Indenture or in the Administration Agreement, nor
shall it have any liability in connection with the malfeasance or nonfeasance by such party.

     (n)      In order to comply with its duties under the U.S.A. Patriot Act, the Indenture Trustee,
shall obtain and verify certain information and documentation from the other party hereto,
including, but not limited to such party’s name, address and other identifying information.

     (o)      The Indenture Trustee shall not be required to risk or expend its own funds or otherwise
incur any financial liability in the performance of any of its duties or in the exercise of any of
its rights or powers hereunder if it shall have reasonable grounds for believing that repayment of
such funds or indemnity satisfactory to it against such risk or liability may not be available.

     (p)      Anything to the contrary in this Indenture notwithstanding, in no event shall the
Indenture Trustee be liable for special, indirect or consequential loss or damage of any kind
whatsoever (including, but not limited to, lost profits) even if the Indenture Trustee has been
advised of the likelihood of such loss or damage and regardless of the form of action.

     (q)      The Indenture Trustee or its Affiliates are permitted to receive additional compensation
that could be deemed to be in the Indenture Trustee’s economic self interest from the Servicer for
(i) serving as an investment advisor, administrator, shareholder servicing agent, custodian, or
sub-custodian with respect to certain of the Permitted Investments, (ii) using Affiliates to effect
transactions in certain Permitted Investments, and (iii) effecting transactions in certain
Permitted Investments. The Indenture Trustee does not guarantee the performance of any Permitted
Investment.

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     SECTION 6.3. Individual Rights of Indenture Trustee. The Indenture Trustee in its
individual or any other capacity may become the owner or pledgee of Class A Notes and may otherwise
deal with the Issuer or its Affiliates with the same rights it would have if it were not Indenture
Trustee. Any Paying Agent, Note Registrar, co registrar or co paying agent may do the same with
like rights. However, the Indenture Trustee must comply with Sections 6.11 and 6.12 below.

     SECTION 6.4. Indenture Trustee’s Disclaimer. The Indenture Trustee shall not be (i)
responsible for and makes no representation as to the validity or adequacy of this Indenture or the
Class A Notes, (ii) accountable for the Issuer’s use of the proceeds from the Class A Notes or
(iii) responsible for any statement of the Issuer in this Indenture or in any document issued in
connection with the sale of the Class A Notes or in the Class A Notes other than the Indenture
Trustee’s certificate of authentication.

     SECTION 6.5. Notice of Defaults. If a Default occurs and is continuing and if it is
actually known to a Responsible Officer of the Indenture Trustee, the Indenture Trustee shall give
prompt notice thereof to the Insurer, the Depositor, the Servicer, the Seller and the Rating
Agencies. The Indenture Trustee shall not be charged with the knowledge of an Event of Default,
Assignment Event or Rapid Amortization Event unless a Responsible Officer has received written
notice or has actual knowledge thereof. The Indenture Trustee shall mail to each Class A
Noteholder, the Depositor, the Servicer, and the Seller notice of the Default within 30 days after
it occurs at the expense of the Issuer. Except in the case of a Default in payment of principal of
or interest on any Class A Note, the Indenture Trustee may withhold the notice to the Class A
Noteholders if and so long as a committee of its Responsible Officers in good faith determines that
withholding the notice is in the interests of Class A Noteholders.

     SECTION 6.6. Reports by Indenture Trustee to Holders. The Indenture Trustee shall
deliver to each Class A Noteholder such information as may be required to enable such holder to
prepare its federal and state income tax returns. In addition, upon Issuer Request, the Indenture
Trustee shall promptly furnish such information reasonably requested by the Issuer that is
reasonably available to the Indenture Trustee to enable the Issuer to perform its federal and state
income tax reporting obligations.

     SECTION 6.7. Compensation and Indemnity. As compensation for its services hereunder,
the Indenture Trustee shall be entitled to receive, on each Payment Date, the Indenture Trustee’s
Fee pursuant to Section 5.01 of the Sale and Servicing Agreement (which compensation shall not be
limited by any law on compensation of a trustee of an express trust) and shall be entitled to
reimbursement for all reasonable out of pocket expenses incurred or made by it, including costs of
collection, in addition to the compensation for its services as provided in Section 5.01 of the
Sale and Servicing Agreement. Such expenses shall include the reasonable compensation and
expenses, disbursements and advances of the Indenture Trustee’s agents, counsel, accountants and
experts. The Indenture Trustee (including in its capacity as Bond Administrator pursuant to the
Administration Agreement) shall be indemnified by from the Trust Estate as provided in Section 5.01
of the Sale and Servicing Agreement against any and all loss, liability or expense (including
attorneys’ fees and expenses) incurred by it in connection with the administration of this trust
and the performance of its duties hereunder and under any other Transaction Document. The
Indenture Trustee shall notify the Issuer promptly of any claim for

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which it may seek indemnity. Failure by the Indenture Trustee to so notify the Issuer shall
not relieve the Issuer of its obligations hereunder. The Issuer shall defend any such claim, and
the Indenture Trustee may have separate counsel and the Issuer shall pay the fees and expenses of
such counsel. The Indenture Trustee shall not be entitled to any such reimbursement of any expense
or to indemnification against any loss, liability or expense incurred by the Indenture Trustee
through the Indenture Trustee’s own willful misconduct, negligence or bad faith. Anything in this
Indenture to the contrary notwithstanding, in no event shall the Indenture Trustee be liable for
special, indirect or consequential loss or damage of any kind whatsoever (including but not limited
to lost profits), even if the Indenture Trustee has been advised of the likelihood of such loss or
damage and regardless of the form of action. This indemnity shall survive the termination of this
Indenture and the earlier resignation or removal of the Indenture Trustee.

     The Issuer’s payment obligations to the Indenture Trustee pursuant to this Section 6.7 shall
survive the discharge of this Indenture. When the Indenture Trustee incurs expenses or provides
services after the occurrence of a Default specified in Section 5.1(e) or (f) hereof with respect
to the Issuer, the expenses and fees for such services are intended to constitute expenses of
administration under Title 11 of the United States Code or any other applicable federal or state
bankruptcy, insolvency or similar law.

     SECTION 6.8. Replacement of Indenture Trustee. No resignation or removal of the
Indenture Trustee and no appointment of a successor Indenture Trustee shall become effective until
the acceptance of appointment by the successor Indenture Trustee (including acceptance of the role
of Bond Administrator pursuant to Section 9(h) of the Administration Agreement) shall become
effective until the acceptance of appointment by the successor Indenture Trustee acceptable to the
Insurer pursuant to this Section. The Indenture Trustee may resign at any time by so notifying the
Issuer and the Insurer. The Insurer or the Holders of a majority in Outstanding Amount of the
Class A Notes (with the prior written consent of the Insurer) may remove the Indenture Trustee by
so notifying the Indenture Trustee and the Insurer (if given by such Class A Noteholders) and may
appoint a successor Indenture Trustee acceptable to the Insurer. The Issuer shall (with the prior
written consent of the Insurer) remove the Indenture Trustee if:

     (a)      the Indenture Trustee fails to comply with Section 6.11 below;

     (b)      the Indenture Trustee is adjudged a bankrupt or insolvent;

     (c)      a receiver or other public officer takes charge of the Indenture Trustee or its property;
or

     (d)      the Indenture Trustee otherwise becomes incapable of acting.

     If the Indenture Trustee resigns or is removed or if a vacancy exists in the office of
Indenture Trustee for any reason (the Indenture Trustee in such event being referred to herein as
the retiring Indenture Trustee), the Issuer shall promptly appoint a successor Indenture Trustee
with the consent of the Insurer, which consent shall not be unreasonably withheld.

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     A successor Indenture Trustee shall deliver a written acceptance of its appointment to the
retiring Indenture Trustee, the Insurer and to the Issuer. Thereupon the resignation or removal of
the retiring Indenture Trustee shall become effective, and the successor Indenture Trustee shall
have all the rights, powers and duties of the Indenture Trustee under this Indenture. The
successor Indenture Trustee shall mail a notice of its succession to Class A Noteholders. The
retiring Indenture Trustee shall promptly transfer all property held by it as Indenture Trustee to
the successor Indenture Trustee.

     If a successor Indenture Trustee does not take office within 60 days after the retiring
Indenture Trustee resigns or is removed, the retiring Indenture Trustee, the Issuer or the Holders
of a majority in Outstanding Amount of the Class A Notes may petition any court of competent
jurisdiction for the appointment of a successor Indenture Trustee.

     If the Indenture Trustee fails to comply with Section 6.11 below, any Class A Noteholder may
(with the consent of the Insurer) petition any court of competent jurisdiction for the removal of
the Indenture Trustee and the appointment of a successor Indenture Trustee.

     Notwithstanding the replacement of the Indenture Trustee pursuant to this Section 6.8, the
Issuer’s obligations under Section 6.7 above shall continue for the benefit of the retiring
Indenture Trustee.

     SECTION 6.9. Successor Indenture Trustee by Merger. If the Indenture Trustee
consolidates with, merges or converts into, or transfers all or substantially all its corporate
trust business or assets to, another corporation or banking association, the resulting, surviving
or transferee corporation without any further act shall be the successor Indenture Trustee;
provided, that such corporation or banking association shall be otherwise qualified and eligible
under Section 6.11 below.

     In case at the time such successor or successors by merger, conversion or consolidation to the
Indenture Trustee shall succeed to the trusts created by this Indenture any of the Class A Notes
shall have been authenticated but not delivered, any such successor to the Indenture Trustee may
adopt the certificate of authentication of any predecessor trustee, and deliver such Class A Notes
so authenticated; and in case at that time any of the Class A Notes shall not have been
authenticated, any successor to the Indenture Trustee may authenticate such Class A Notes either in
the name of any predecessor hereunder or in the name of the successor to the Indenture Trustee; and
in all such cases such certificates shall have the full force which it is anywhere in the Class A
Notes or in this Indenture provided that the certificate of the Indenture Trustee shall have.

     SECTION 6.10. Appointment of Co-Indenture Trustee or Separate Indenture Trustee.

     (a)      Notwithstanding any other provisions of this Indenture, at any time, for the purpose of
meeting any legal requirement of any jurisdiction in which any part of the Trust Estate may at the
time be located, the Indenture Trustee shall have the power and may execute and deliver all
instruments to appoint one or more Persons to act as a co trustee or co trustees, or separate
trustee or separate trustees, of all or any part of the Trust Estate, and to vest in such Person or
Persons, in such capacity and for the benefit of the Class A Noteholders and the

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Insurer, such title to the Trust Estate, or any part hereof, and, subject to the other
provisions of this Section 6.10, such powers, duties, obligations, rights and trusts as the
Indenture Trustee may consider necessary or desirable. No co-trustee or separate trustee hereunder
shall be required to meet the terms of eligibility as a successor trustee under Section 6.11 below
and no notice to Class A Noteholders of the appointment of any co trustee or separate trustee shall
be required under Section 6.8 above.

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

     (i) all rights, powers, duties and obligations conferred or imposed upon the Indenture
Trustee shall be conferred or imposed upon and exercised or performed by the Indenture
Trustee and such separate trustee or co-trustee jointly (it being understood that such
separate trustee or co trustee is not authorized to act separately without the Indenture
Trustee joining in such act), except to the extent that under any law of any jurisdiction in
which any particular act or acts are to be performed the Indenture Trustee shall be
incompetent or unqualified to perform such act or acts, in which event such rights, powers,
duties and obligations (including the holding of title to the Trust Estate or any portion
thereof in any such jurisdiction) shall be exercised and performed singly by such separate
trustee or co trustee, but solely at the direction of the Indenture Trustee;

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

     (iii) the Indenture Trustee may at any time accept the resignation of or remove any
separate trustee or co trustee.

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

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

     SECTION 6.11. Eligibility; Disqualification. The Indenture Trustee shall at all times
satisfy the requirements of TIA Section 310(a). The Indenture Trustee shall have a combined

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capital and surplus of at least $50,000,000 as set forth in its most recent published annual
report of condition. The Indenture Trustee shall comply with TIA Section 310(b), including the
optional provision permitted by the second sentence of TIA Section 310(b)(9); provided, however,
that there shall be excluded from the operation of TIA Section 310(b)(1) any indenture or
indentures under which other securities of the Issuer are outstanding if the requirements for such
exclusion set forth in TIA Section 310(b)(1) are met.

     SECTION 6.12. Preferential Collection of Claims Against Issuer. The Indenture Trustee
shall comply with TIA Section 311(a), excluding any creditor relationship listed in TIA Section
311(b). An Indenture Trustee who has resigned or been removed shall be subject to TIA Section
311(a) to the extent indicated therein.

     SECTION 6.13. Representations and Warranties. The Indenture Trustee hereby represents
and warrants to the Issuer and the Insurer that:

     (a)      The Indenture Trustee is duly organized, validly existing and in good standing under the
laws of the United States, with power and authority to own its properties and to conduct its
business as such properties are currently owned and such business is currently conducted.

     (b)      The Indenture Trustee has the power and authority to execute and deliver this Indenture
and to carry out its terms; and the execution, delivery and performance of this Indenture have been
duly authorized by the Indenture Trustee by all necessary corporate action.

     (c)      The consummation of the transactions contemplated by this Indenture and the fulfillment of
the terms hereof do not conflict with, result in any breach of any of the terms and provisions of,
or constitute (with or without notice or lapse of time) a default under, the articles of
association or bylaws of the Indenture Trustee.

     SECTION 6.14. Directions to Indenture Trustee. The Indenture Trustee is hereby
directed:

     (a)      to accept the pledge of the Mortgage Loans and hold the Trust Estate in trust for the
Class A Noteholders and the Insurer;

     (b)      to authenticate and deliver the Class A Notes substantially in the form prescribed by
Exhibit A to the Sale and Servicing Agreement in accordance with the terms of this
Indenture; and

     (c)      to take all other actions as shall be required to be taken by the terms of this Indenture.

ARTICLE VII

NOTEHOLDERS’ LISTS AND REPORTS

     SECTION 7.1. Issuer To Furnish Indenture Trustee Names and Addresses of Class A
Noteholders. The Issuer will furnish or cause to be furnished to the Indenture Trustee (a) not

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more than five (5) days after the earlier of (i) each Record Date and (ii) three (3) months
after the last Record Date, a list, in such form as the Indenture Trustee may reasonably require,
of the names and addresses of the Class A Noteholders as of such Record Date, (b) at such other
times as the Indenture Trustee and the Insurer may request in writing, within 30 days after receipt
by the Issuer of any such request, a list of similar form and content as of a date not more than 10
days prior to the time such list is furnished; provided, however, that so long as the Indenture
Trustee is the Note Registrar, no such list shall be required to be furnished.

     SECTION 7.2. Preservation of Information; Communications to Class A Noteholders.

     (a)      The Indenture Trustee shall preserve, in as current a form as is reasonably practicable,
the names and addresses of the Class A Noteholders contained in the most recent list furnished to
the Indenture Trustee as provided in Section 7.1 above and the names and addresses of Class A
Noteholders received by the Indenture Trustee in its capacity as Note Registrar. The Indenture
Trustee may destroy any list furnished to it as provided in such Section 7.1 upon receipt of a new
list so furnished.

     (b)      Class A Noteholders may communicate pursuant to TIA Section 312(b) with other Class A
Noteholders with respect to their rights under this Indenture or under the Class A Notes.

     (c)      The Issuer, the Indenture Trustee and the Note Registrar shall have the protection of TIA
Section 312(c).

     SECTION 7.3. Reports by Issuer.

     (a)      The Issuer shall:

     (i) Comply with its obligations pursuant to Section 5.03 of the Sale and Servicing
Agreement; and

     (ii) make available to all Class A Noteholders described in TIA Section 313(c) such
summaries of any information, documents and reports required to be filed by the Issuer
pursuant to clauses (i) and (ii) of this Section 7.3(a) and by rules and regulations
prescribed from time to time by the Commission.

     (b)      Unless the Issuer otherwise determines, the fiscal year of the Issuer shall end on
December 31 of each year.

     SECTION 7.4. Reports by Indenture Trustee. If required by TIA Section 313(a), within
60 days after each August 1, beginning with 2005, the Indenture Trustee shall mail to each Class A
Noteholder as required by TIA Section 313(c) and to the Insurer a brief report dated as of such
date that complies with TIA Section 313(a). The Indenture Trustee also shall comply with TIA
Section 313(b).

     A copy of each report at the time of its mailing to Class A Noteholders shall be filed by the
Indenture Trustee with the Commission and each securities exchange, if any, on which the

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Class A Notes are listed. The Issuer shall notify the Indenture Trustee if and when the Class
A Notes are listed on any securities exchange.

ARTICLE VIII

ACCOUNTS, DISBURSEMENTS AND RELEASES

     SECTION 8.1. Collection of Money. Except as otherwise expressly provided herein, the
Indenture Trustee may demand payment or delivery of, and shall receive and collect, directly and
without intervention or assistance of any fiscal agent or other intermediary, all money and other
property payable to or receivable by the Indenture Trustee pursuant to this Indenture. The
Indenture Trustee shall apply all such money received by it as provided in this Indenture. Except
as otherwise expressly provided in this Indenture, if any default occurs in the making of any
payment or performance under any agreement or instrument that is part of the Trust Estate, the
Indenture Trustee may take such action as may be appropriate to enforce such payment or
performance, including the institution and prosecution of appropriate Proceedings. Any such action
shall be without prejudice to any right to claim a Default or Event of Default under this Indenture
and any right to proceed thereafter as provided in Article V herein.

     SECTION 8.2. Accounts; Distributions.

     (a)      On or prior to the Closing Date, the Indenture Trustee shall establish and maintain or
cause to be established and maintained, in the name of the Indenture Trustee for the benefit of the
Class A Noteholders, the Certificateholders, the Transferor and the Insurer, the Accounts as
provided in Article III of the Sale and Servicing Agreement into which amounts shall be deposited
in accordance with the terms of the Sale and Servicing Agreement.

     (b)      The Indenture Trustee shall deposit into the Accounts any amounts representing payments on
and any collections in respect of the Mortgage Loans received by it, if any, and any other amounts
required by the terms of the Transaction Documents to be so deposited, immediately following
receipt thereof, in accordance with the Sale and Servicing Agreement. Amounts on deposit in the
Accounts shall remain uninvested or shall be invested as the Indenture Trustee is directed pursuant
to the Sale and Servicing Agreement and the Auction Administration Agreement, as applicable.

     (c)      On each Payment Date and the Redemption Date, to the extent funds are available in the
Accounts, the Indenture Trustee shall make the distributions and payments in the amounts and in the
priority set forth in Section 5.01 of the Sale and Servicing Agreement (except as otherwise
provided in Section 5.4(b) above or in the Sale and Servicing Agreement).

     (d)      On each Payment Date and the Redemption Date, to the extent of the interest of the
Indenture Trustee in the Accounts, the Indenture Trustee hereby authorizes the Paying Agent, as
applicable, to make the distributions from the Accounts as required pursuant to the Sale and
Servicing Agreement.

     SECTION 8.3. Opinion of Counsel. The Indenture Trustee shall receive at least seven
days notice when requested by the Issuer to take any action pursuant to Section 2.9 above,
accompanied by copies of any instruments involved, and the Indenture Trustee shall also require,

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as a condition to such action, an Opinion of Counsel, with a copy to the Insurer, in form and
substance satisfactory to the Indenture Trustee, stating the legal effect of any such action,
outlining the steps required to complete the same, and concluding that all conditions precedent to
the taking of such action have been complied with and such action will not materially and adversely
impair the security for the Class A Notes or the rights of the Class A Noteholders or the Insurer
in contravention of the provisions of this Indenture; provided, however, that such Opinion of
Counsel shall not be required to express an opinion as to the fair market value of a Trust Estate.
Counsel rendering any such opinion may rely, without independent investigation, on the accuracy and
validity of any certificate or other instrument delivered to the Indenture Trustee in connection
with any such action.

ARTICLE IX

SUPPLEMENTAL INDENTURES

     SECTION 9.1. Supplemental Indentures Without Consent of Class A Noteholders.

     (a)      Without the consent of the Holders of any Class A Notes but with prior notice to the
Rating Agencies, the Issuer and the Indenture Trustee, when authorized by an Issuer Order, at any
time and from time to time and only with the prior written consent of the Insurer, may enter into
one or more indentures supplemental hereto (which shall conform to the provisions of the Trust
Indenture Act as in force at the date of the execution thereof), in form satisfactory to the
Indenture Trustee, for any of the following purposes:

     (i) to correct or amplify the description of any property at any time subject to the
lien of this Indenture, or better to assure, convey and confirm unto the Indenture Trustee
any property subject or required to be subjected to the lien of this Indenture, or to
subject to the lien of this Indenture additional property;

     (ii) to evidence the succession, in compliance with the applicable provisions hereof,
of another person to the Issuer, and the assumption by any such successor of the covenants
of the Issuer herein and in the Class A Notes contained;

     (iii) to add to the covenants of the Issuer, for the benefit of the Class A Noteholders
or the Insurer, or to surrender any right or power herein conferred upon the Issuer;

     (iv) to convey, transfer, assign, mortgage or pledge any property to or with the
Indenture Trustee;

     (v) to cure any ambiguity, to correct or supplement any provision herein or in any
supplemental indenture that may be inconsistent with any other provision herein or in any
supplemental indenture or to make any other provisions with respect to matters or questions
arising under this Indenture or in any supplemental indenture; provided, that such action
shall not adversely affect the interests of the Class A Noteholders, the Certificateholders,
the Transferor or the Insurer as evidenced by an Opinion of Counsel;

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     (vi) to evidence and provide for the acceptance of the appointment hereunder by a
successor trustee with respect to the Class A Notes and to add to or change any of the
provisions of this Indenture as shall be necessary to facilitate the administration of the
trusts hereunder by more than one trustee, pursuant to the requirements of Article VI
herein; or

     (vii) to modify, eliminate or add to the provisions of this Indenture to such extent as
shall be necessary to effect the qualification of this Indenture under the TIA or under any
similar federal statute hereafter enacted and to add to this Indenture such other provisions
as may be expressly required by the TIA, as evidenced by an Opinion of Counsel.

     The Indenture Trustee is hereby authorized to join in the execution of any such supplemental
indenture and to make any further appropriate agreements and stipulations that may be therein
contained.

     (b)      The Issuer and the Indenture Trustee, when authorized by an Issuer Order, may, also
without the consent of any of the Class A Noteholders but with prior consent of the Rating Agencies
and the Insurer, enter into an indenture or indentures supplemental hereto for the purpose of
adding any provisions to, or changing in any manner or eliminating any of the provisions of, this
Indenture or of modifying in any manner the rights of the Class A Noteholders under this Indenture;
provided, however, that such action shall not, as evidenced by an Opinion of Counsel and
satisfaction of the Rating Agency Condition, adversely affect in any material respect the interests
of any Class A Noteholder or the Insurer or cause the Issuer to be subject to entity level tax.
However, except as provided in the following sentence, no such supplemental indenture pursuant to
this Section 9.1(a) or (b) shall (i) conflict with the provisions of Section 9.2 or (ii) without
the consent of Holders of at least 51% of the Outstanding Amount of Class A Notes, permit the
Issuer to (A) modify the definition of the term “Eligible Investments” except as provided therein,
to expand the types of Eligible Investments specified in that definition or (B) enter into a
derivative contract for the benefit of the Class A Noteholders. However, the preceding sentence
shall not prevent the adoption without Class A Noteholder consent of any supplemental indenture
described in clause (ii) thereof, if (i) that supplemental indenture otherwise satisfies the first
sentence of this Section 9.1(b) and (ii) the adoption of that supplemental indenture (a) is
necessary to correct a manifest error in a Transaction Document, (b) is necessary to conform the
terms of any Transaction Document to the terms of the Class A Notes described in the Prospectus
Supplement, where such Transaction Document and the Prospectus Supplement are inconsistent, (c) is
required by the Rating Agencies or (d) is, as evidenced by the written opinion of the Seller’s
internal accountants, delivered and acceptable to the Indenture Trustee, necessary to comply with
or to conform to then-current financial accounting standards.

     SECTION 9.2. Supplemental Indentures with Consent of Class A Noteholders. The Issuer
and the Indenture Trustee, when authorized by an Issuer Order, also may, with prior consent of the
Rating Agencies and the Insurer, and with the consent of the Holders of not less than a majority of
the Outstanding Amount of the Class A Notes, by Act of such Holders delivered to the Issuer and the
Indenture Trustee, enter into an indenture or indentures supplemental hereto for the purpose of
adding any provisions to, or changing in any manner or

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eliminating any of the provisions of, this Indenture or of modifying in any manner the rights
of the Holders of the Class A Notes under this Indenture; provided, however, that no such
supplemental indenture shall, without the consent of the Holder of each Outstanding Class A Note
affected thereby:

     (a)      change the date of payment of any installment of principal of or interest on any Class A
Note, or reduce the principal amount thereof, the interest rate thereon or the amount required to
be paid on the Class A Notes following the exercise of the option set forth in Section 8.01 of the
Sale and Servicing Agreement, change the provisions of this Indenture relating to the application
of collections on, or the proceeds of the sale of, the Trust Estate to payment of principal of or
interest on the Class A Notes, or change any place of payment where, or the coin or currency in
which, any Class A Note or the interest thereon is payable, or impair the right to institute suit
for the enforcement of the provisions of this Indenture requiring the application of funds
available therefor, as provided in Article V herein, to the payment of any such amount due on the
Class A Notes on or after the respective due dates thereof (or, in the case of redemption, on or
after the Redemption Date);

     (b)      reduce the percentage of the Outstanding Amount of the Class A Notes, the consent of the
Holders of which is required for any such supplemental indenture, or the consent of the Holders of
which is required for any waiver of compliance with certain provisions of this Indenture or certain
defaults hereunder and their consequences provided for in this Indenture;

     (c)      modify or alter the provisions of the proviso to the definition of the term “Outstanding”;

     (d)      reduce the percentage of the Outstanding Amount of the Class A Notes required to direct
the Indenture Trustee to direct the Issuer to sell or liquidate the Trust Estate pursuant to

Section 5.4 above;

     (e)      modify any provision of this Section except to increase any percentage specified herein or
to provide that certain additional provisions of this Indenture or the Transaction Documents cannot
be modified or waived without the consent of the Holder of each Outstanding Class A Note affected
thereby;

     (f)      modify any of the provisions of this Indenture in such manner as to affect the calculation
of the amount of any payment of interest or principal due on any Class A Note on any Payment Date
(including the calculation of any of the individual components of such calculation); or

     (g)      permit the creation of any lien ranking prior to or on a parity with the lien of this
Indenture with respect to any part of the Trust Estate or, except as otherwise expressly permitted
or contemplated herein, terminate the lien of this Indenture on any property at any time subject
hereto or deprive the Holder of any Class A Note of the security provided by the lien of this
Indenture; provided further, that such action shall not, as evidenced by an Opinion of Counsel,
cause the Issuer to be subject to an entity level tax or jeopardize the status of the Class A Notes
as debt for all purposes.

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     In connection with requesting the consent of the Class A Noteholders pursuant to this Section
9.2, the Indenture Trustee shall mail to the Holders of the Class A Notes to which such amendment
or supplemental indenture relates a notice setting forth in general terms the substance of such
supplemental indenture at the Issuer’s expense. It shall not be necessary for any Act of Class A
Noteholders under this Section 9.2 to approve the particular form of any proposed supplemental
indenture, but it shall be sufficient if such Act shall approve the substance thereof.

     SECTION 9.3. Execution of Supplemental Indentures. In executing, or permitting the
additional trusts created by, any supplemental indenture permitted by this Article IX or the
modification thereby of the trusts created by this Indenture, the Indenture Trustee shall be
entitled to receive, and subject to Sections 6.1 and 6.2, shall be fully protected in relying upon,
an Opinion of Counsel stating that the execution of such supplemental indenture is authorized or
permitted by this Indenture and all conditions precedent to the execution of such supplemental
indenture have been met. The Indenture Trustee may, but shall not be obligated to, enter into any
such supplemental indenture that affects the Indenture Trustee’s own rights, duties, liabilities or
immunities under this Indenture or otherwise.

     SECTION 9.4. Effect of Supplemental Indenture. Upon the execution of any supplemental
indenture pursuant to the provisions hereof, this Indenture shall be deemed to be modified and
amended in accordance therewith with respect to the Class A Notes affected thereby, and the
respective rights, limitations of rights, obligations, duties, liabilities and immunities under
this Indenture of the Indenture Trustee, the Issuer and the Holders of the Class A Notes shall
thereafter be determined, exercised and enforced hereunder subject in all respects to such
modifications and amendments, and all the terms and conditions of any such supplemental indenture
shall be and be deemed to be part of the terms and conditions of this Indenture for any and all
purposes.

     SECTION 9.5. Conformity with Trust Indenture Act. Every amendment of this Indenture
and every supplemental indenture executed pursuant to this Article IX shall conform to the
requirements of the Trust Indenture Act as then in effect so long as this Indenture shall then be
qualified under the Trust Indenture Act.

     SECTION 9.6. Reference in Notes to Supplemental Indentures. Class A Notes
authenticated and delivered after the execution of any supplemental indenture pursuant to this
Article IX may, and if required by the Indenture Trustee shall, bear a notation in form approved by
the Indenture Trustee as to any matter provided for in such supplemental indenture. If the Issuer
shall so determine, new Class A Notes so modified as to conform, in the opinion of the Indenture
Trustee and the Issuer, to any such supplemental indenture may be prepared and executed by the
Issuer and authenticated and delivered by the Indenture Trustee in exchange for Outstanding Class A
Notes.

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ARTICLE X

REDEMPTION OF NOTES

     SECTION 10.1. Redemption.

     The Servicer may effect an early termination of the Class A Notes pursuant to Section 8.01 of
the Sale and Servicing Agreement on or after any Payment Date on which the Class A Note Principal
Balance is less than or equal to 10% of the Original Class A Note Principal Balance by purchasing
on the next succeeding Payment Date, all of the outstanding Mortgage Loans and REO Properties at
the Termination Price, pursuant to the provisions of Section 8.01 of the Sale and Servicing
Agreement.

     The Indenture Trustee shall furnish notice of any such purchase in accordance with Section
8.01 of the Sale and Servicing Agreement.

ARTICLE XI

MISCELLANEOUS

SECTION 11.1. Compliance Certificates and Opinions, etc.

     (a)      Upon any application or request by the Issuer made to the Indenture Trustee to take any
action under any provision of this Indenture, the Issuer shall furnish to the Indenture Trustee and
to the Insurer (i) an Officer’s Certificate stating that all conditions precedent, if any, provided
for in this Indenture relating to the proposed action have been complied with, (ii) an Opinion of
Counsel stating that in the opinion of such counsel all such conditions precedent, if any, have
been complied with and (iii) (if required by the TIA) an Independent Certificate from a firm of
certified public accountants meeting the applicable requirements of this Section 11.1, except that,
in the case of any such application or request as to which the furnishing of such documents is
specifically required by any provision of this Indenture, no additional certificate or opinion need
be furnished.

     Every certificate or opinion with respect to compliance with a condition or covenant provided
for in this Indenture shall include:

     (1)      a statement that each signatory of such certificate or opinion has
read or has caused to be read such covenant or condition and the definitions
herein relating thereto;

     (2)      a brief statement as to the nature and scope of the examination or
investigation upon which the statements or opinions contained in such
certificate or opinion are based;

     (3)      a statement that, in the opinion of each such signatory, such
signatory has made such examination or investigation as is necessary to
enable such signatory to express an informed opinion as to whether or not
such covenant or condition has been complied with; and

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     (4)      a statement as to whether, in the opinion of each such signatory,
such condition or covenant has been complied with.

     (b)      (i)      Prior to the deposit of any Collateral or other property or securities with the
Indenture Trustee that is to be made the basis for the release of any property or securities
subject to the lien of this Indenture (except in the case of the release of Mortgage Loans in
accordance with the Sale and Servicing Agreement), the Issuer shall, in addition to any obligation
imposed in Section 11.1(a) herein or elsewhere in this Indenture, furnish to the Indenture Trustee
an Officer’s Certificate certifying or stating the opinion of each person signing such certificate
as to the fair value (within 90 days of such deposit) to the Issuer of the Collateral or other
property or securities to be so deposited.

     (ii) Whenever the Issuer is required to furnish to the Indenture Trustee an Officer’s
Certificate certifying or stating the opinion of any signer thereof as to the matters
described in clause (i) above, the Issuer shall also deliver to the Indenture Trustee an
Independent Certificate as to the same matters, if the fair value to the Issuer of the
Collateral, other property or securities to be so deposited and of all other such
Collateral, other property or securities made the basis of any such withdrawal or release
since the commencement of the then current fiscal year of the Issuer, as set forth in the
certificates delivered pursuant to clause (i) above and this clause (ii), is 10% or more of
the aggregate Class A Note Principal Balance of the Class A Notes, but such a certificate
need not be furnished with respect to any securities so deposited, if the fair value thereof
to the Issuer as set forth in the related Officer’s Certificate is less than either (A)
$25,000 or (B) one percent of the aggregate Class A Note Principal Balance of the Class A
Notes.

     (iii) Whenever any property or securities are to be released from the lien of this
Indenture, the Issuer shall also furnish to the Indenture Trustee an Officer’s Certificate
certifying or stating the opinion of each person signing such certificate as to the fair
value (within 90 days of such release) of the property or securities proposed to be released
and stating that in the opinion of such person the proposed release will not impair the
security under this Indenture in contravention of the provisions hereof.

     (iv) Whenever the Issuer is required to furnish to the Indenture Trustee an Officer’s
Certificate certifying or stating the opinion of any signer thereof as to the matters
described in clause (iii) above, the Issuer shall also furnish to the Indenture Trustee an
Independent Certificate as to the same matters if the fair value of the property or
securities and of all other property or securities released from the lien of this Indenture
since the commencement of the then current calendar year, as set forth in the certificates
required by clause (iii) above and this clause (iv), equals 10% or more of the aggregate
Class A Note Principal Balance of the Class A Notes, but such certificate need not be
furnished in the case of any release of property or securities if the fair value thereof as
set forth in the related Officer’s Certificate is less than $25,000 or less than one percent
of the then aggregate Class A Note Principal Balance of the Class A Notes.

     SECTION 11.2. Form of Documents Delivered to Indenture Trustee. In any case where
several matters are required to be certified by, or covered by an opinion of, any specified Person,
it is not necessary that all such matters be certified by, or covered by the opinion of, only one

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such Person, or that they be so certified or covered by only one document, but one such Person
may certify or give an opinion with respect to some matters and one or more other such Persons as
to other matters, and any such Person may certify or give an opinion as to such matters in one or
several documents.

     Any certificate or opinion of an Authorized Officer of the Issuer may be based, insofar as it
relates to legal matters, upon a certificate or opinion of, or representations by, counsel, unless
such officer knows, or in the exercise of reasonable care should know, that the certificate or
opinion or representations with respect to the matters upon which such officer’s certificate or
opinion is based are erroneous. Any such certificate of an Authorized Officer or Opinion of
Counsel may be based, insofar as it relates to factual matters, upon a certificate or opinion of,
or representations by, an officer or officers of the Servicer, the Transferor or the Issuer,
stating that the information with respect to such factual matters is in the possession of the
Servicer, the Transferor or the Issuer, unless such counsel knows, or in the exercise of reasonable
care should know, that the certificate or opinion or representations with respect to such matters
are erroneous.

     Where any Person is required to make, give or execute two or more applications, requests,
consents, certificates, statements, opinions or other instruments under this Indenture, they may,
but need not, be consolidated and form one instrument.

     Whenever in this Indenture, in connection with any application or certificate or report to the
Indenture Trustee, it is provided that the Issuer shall deliver any document as a condition of the
granting of such application, or as evidence of the Issuer’s compliance with any term hereof, it is
intended that the truth and accuracy, at the time of the granting of such application or at the
effective date of such certificate or report (as the case may be), of the facts and opinions stated
in such document shall in such case be conditions precedent to the right of the Issuer to have such
application granted or to the sufficiency of such certificate or report. The foregoing shall not,
however, be construed to affect the Indenture Trustee’s right to rely upon the truth and accuracy
of any statement or opinion contained in any such document as provided in Article VI hereof.

     SECTION 11.3. Acts of Class A Noteholders.

     (a)      Any request, demand, authorization, direction, notice, consent, waiver or other action
provided by this Indenture to be given or taken by Class A Noteholders may be embodied in and
evidenced by one or more instruments of substantially similar tenor signed by such Class A
Noteholders in person or by agents duly appointed in writing; and except as herein otherwise
expressly provided such action shall become effective when such instrument or instruments are
delivered to the Indenture Trustee, and, where it is hereby expressly required, to the Issuer.
Such instrument or instruments (and the action embodied therein and evidenced thereby) are herein
sometimes referred to as the “Act” of the Class A Noteholders signing such instrument or
instruments. Proof of execution of any such instrument or of a writing appointing any such agent
shall be sufficient for any purpose of this Indenture and (subject to Section 6.1 hereof)
conclusive in favor of the Indenture Trustee and the Issuer, if made in the manner provided in this
Section 11.3.

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     (b)      The fact and date of the execution by any person of any such instrument or writing may be
proved in any manner that the Indenture Trustee deems sufficient.

     (c)      The ownership of Class A Notes shall be proved by the Note Register.

     (d)      Any request, demand, authorization, direction, notice, consent, waiver or other action by
the Holder of any Class A Notes shall bind the Holder of every Class A Note issued upon the
registration thereof or in exchange therefor or in lieu thereof, in respect of anything done,
omitted or suffered to be done by the Indenture Trustee or the Issuer in reliance thereon, whether
or not notation of such action is made upon such Class A Note.

     SECTION 11.4. Notices. Any request, demand, authorization, direction, notice,
consent, waiver or Act of Class A Noteholders or other documents provided or permitted by this
Indenture shall be in writing and if such request, demand, authorization, direction, notice,
consent, waiver or Act of Class A Noteholders is to be made upon, given or furnished to or filed
with:

     (a)      the Indenture Trustee by any Class A Noteholder or by the Issuer shall be sufficient for
every purpose hereunder if made, given, furnished or filed in writing to or with the Indenture
Trustee at its Corporate Trust Office, or

     (b)      the Issuer by the Indenture Trustee or by any Class A Noteholder shall be sufficient for
every purpose hereunder if in writing and mailed first class, postage prepaid to the Issuer
addressed to: IndyMac Residential Asset-Backed Trust, Series 2004-LH1, in care of Wilmington Trust
Company, as Owner Trustee, Rodney Square North, 1100 North Market Street, Wilmington, Delaware
19890, Attention: Corporate Trust Administration, with copies to the Administrator addressed to:
155 North Lake Avenue, Pasadena, California 91101, Attention: Treasurer, or at any other address
previously furnished in writing to the Indenture Trustee by the Issuer or the Administrator. The
Issuer shall promptly transmit any notice received by it from the Class A Noteholders to the
Indenture Trustee.

     (c)      the Insurer, by the Issuer, the Indenture Trustee or by any Class A Noteholders shall be
sufficient for every purpose hereunder to in writing and mailed, first-class postage pre-paid, or
personally delivered or telecopied to: One State Street Plaza, 19th Floor, New York, New
York 10004, Attention: Risk Management, Consumer Asset-Backed Securities, IndyMac Residential
Asset-Backed Trust, Series 2004-LH1 (with a copy to the General Counsel). The Insurer shall
promptly transmit any notice received by it from the Issuer, the Indenture Trustee or the Class A
Noteholders to the Issuer or Indenture Trustee, as the case may be.

     Notices required to be given to the Rating Agencies by the Indenture Trustee or the Owner
Trustee shall be in writing, personally delivered or mailed by certified mail, return receipt
requested, to (i) in the case of Standard & Poor’s, at the following address: 55 Water Street, New
York, New York 10041 and (ii) in the case of Moody’s, at the following address: 99 Church Street,
6th Floor, New York, New York 10007, Attention: Residential Mortgage Monitoring; or as to each of
the foregoing, at such other address as shall be designated by written notice to the other parties.

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     SECTION 11.5. Notices to Class A Noteholders; Waiver. Where this Indenture provides
for notice to Class A Noteholders of any event, such notice shall be sufficiently given (unless
otherwise herein expressly provided) if in writing and mailed, first class, postage prepaid to each
Class A Noteholder affected by such event, at his address as it appears on the Note Register, not
later than the latest date, and not earlier than the earliest date, prescribed for the giving of
such notice. In any case where notice to Class A Noteholders is given by mail, neither the failure
to mail such notice nor any defect in any notice so mailed to any particular Class A Noteholder
shall affect the sufficiency of such notice with respect to other Class A Noteholders, and any
notice that is mailed in the manner herein provided shall conclusively be presumed to have been
duly given.

     Where this Indenture provides for notice in any manner, such notice may be waived in writing
by any Person entitled to receive such notice, either before or after the event, and such waiver
shall be the equivalent of such notice. Waivers of notice by Class A Noteholders shall be filed
with the Indenture Trustee but such filing shall not be a condition precedent to the validity of
any action taken in reliance upon such a waiver.

     In case, by reason of the suspension of regular mail service as a result of a strike, work
stoppage or similar activity, it shall be impractical to mail notice of any event to Class A
Noteholders when such notice is required to be given pursuant to any provision of this Indenture,
then any manner of giving such notice as shall be satisfactory to the Indenture Trustee shall be
deemed to be a sufficient giving of such notice.

     Where this Indenture provides for notice to the Rating Agencies, failure to give such notice
shall not affect any other rights or obligations created hereunder.

     SECTION 11.6. Rights of the Insurer to Exercise Rights of Class A Noteholders.

     By accepting its Class A Note, each Class A Noteholder agrees that unless an Insurer Default
exists, the Insurer shall have the right to exercise all rights of the Class A Noteholders as
specified under this Agreement without any further consent of the Class A Noteholders. Any right
conferred to the Insurer hereunder shall be suspended and shall run to the benefit of the Class A
Noteholders during any period in which there exists an Insurer Default, provided, however, that
during an Insurer Default, the consent of the Insurer must be obtained with respect to any
amendments that may materially adversely affect the Insurer.

     SECTION 11.7. Conflict with Trust Indenture Act. If any provision hereof limits,
qualifies or conflicts with another provision hereof that is required to be included in this
Indenture by any of the provisions of the Trust Indenture Act, such required provision shall
control.

     The provisions of TIA Sections 310 through 317 that impose duties on any person (including the
provisions automatically deemed included herein unless expressly excluded by this Indenture) are a
part of and govern this Indenture, whether or not physically contained herein.

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     SECTION 11.8. Effect of Headings and Table of Contents. The Article and Section
headings herein and the Table of Contents are for convenience only and shall not affect the
construction hereof.

     SECTION 11.9. Successors and Assigns. All covenants and agreements in this Indenture
and the Class A Notes by the Issuer shall bind its successors and assigns, whether so expressed or
not. All agreements of the Indenture Trustee in this Indenture shall bind its successors, co
trustees and agents.

     SECTION 11.10. Separability. In case any provision in this Indenture or in the Class
A Notes shall be invalid, illegal or unenforceable, the validity, legality, and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.

     SECTION 11.11. Benefits of Indenture. Nothing in this Indenture or in the Class A
Notes, express or implied, shall give to any Person, other than the parties hereto and their
successors hereunder, and the Class A Noteholders, the Insurer, and any other party secured
hereunder, and any other Person with an ownership interest in any part of the Trust Estate, any
benefit or any legal or equitable right, remedy or claim under this Indenture.

     SECTION 11.12. Legal Holidays. In any case where the date on which any payment is due
shall not be a Business Day, then (notwithstanding any other provision of the Class A Notes or this
Indenture) payment need not be made on such date, but may be made on the next succeeding Business
Day with the same force and effect as if made on the date on which nominally due, and no interest
shall accrue for the period from and after any such nominal date.

     SECTION 11.13. GOVERNING LAW. THIS INDENTURE SHALL BE CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF NEW YORK, WITHOUT REFERENCE TO ITS CONFLICT OF LAW PROVISIONS, AND THE
OBLIGATIONS, RIGHTS AND REMEDIES OF THE PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH
SUCH LAWS.

     SECTION 11.14. Counterparts. This Indenture may be executed in any number of
counterparts, each of which so executed shall be deemed to be an original, but all such
counterparts shall together constitute but one and the same instrument.

     SECTION 11.15. Recording of Indenture. If this Indenture is subject to recording in
any appropriate public recording offices, such recording is to be effected by the Issuer and at its
expense accompanied by an Opinion of Counsel (which may be counsel reasonably acceptable to the
Indenture Trustee) to the effect that such recording is necessary either for the protection of the
Class A Noteholders or any other Person secured hereunder or for the enforcement of any right or
remedy granted to the Indenture Trustee under this Indenture.

     SECTION 11.16. Trust Obligation. No recourse may be taken, directly or indirectly,
with respect to the obligations of the Issuer, the Owner Trustee or the Indenture Trustee on the
Class A Notes or under this Indenture or any certificate or other writing delivered in connection
herewith or therewith, against (i) the Indenture Trustee or the Owner Trustee in its individual
capacity, (ii) any owner of a beneficial interest in the Issuer or (iii) any partner, owner,
beneficiary, agent, officer, director, employee or agent of the Indenture Trustee or the Owner

60

 

Trustee in its individual capacity, any holder of a beneficial interest in the Issuer, the
Owner Trustee or the Indenture Trustee or of any successor or assign of the Indenture Trustee or
the Owner Trustee in its individual capacity, except as any such Person may have expressly agreed
(it being understood that the Indenture Trustee and the Owner Trustee have no such obligations in
their individual capacity) and except that any such partner, owner or beneficiary shall be fully
liable, to the extent provided by applicable law, for any unpaid consideration for stock, unpaid
capital contribution or failure to pay any installment or call owing to such entity. For all
purposes of this Indenture, in the performance of any duties or obligations of the Issuer
hereunder, the Owner Trustee shall be subject to, and entitled to the benefits of, the terms and
provisions of Articles VI, VII and VIII of the Trust Agreement.

     SECTION 11.17. No Petition. The Indenture Trustee, by entering into this Indenture,
and each Class A Noteholder, by accepting a Class A Note, hereby covenant and agree that they will
not at any time institute against the Transferor (and any wholly-owned subsidiary thereof), the
Depositor, the Servicer or the Issuer, or join in any institution against the Transferor (and any
wholly-owned subsidiary thereof), the Depositor, the Servicer or the Issuer of, any bankruptcy,
reorganization, arrangement, insolvency or liquidation proceedings, or other proceedings under any
United States federal or state bankruptcy or similar law in connection with any obligations
relating to the Class A Notes, this Indenture or any of the Transaction Documents; provided,
however, that nothing herein shall be construed to prohibit the Indenture Trustee from filing
proofs of claim or otherwise participating in any such proceeding instituted by any other person.

     SECTION 11.18. Inspection. The Issuer shall, upon the reasonable request of the
Indenture Trustee or Insurer, permit the Indenture Trustee or Insurer or their authorized agents,
or cause the Indenture Trustee or Insurer or their authorized agents to be permitted (in the case
of the Issuer) to inspect the books and records of the Issuer as they may relate to the Notes, the
obligations of the Issuer under the Transaction Documents to which it is a party and the
Transaction. Such inspections and discussions shall be conducted during normal business hours and
shall not unreasonably disrupt the business of the Issuer. The books and records of the Issuer
shall be maintained at the address of the Issuer designated in this Indenture for receipt of
notices.

     SECTION 11.19. Inconsistencies With the Sale and Servicing Agreement. In the event
certain provisions of this Agreement conflict with the provisions of the Sale and Servicing
Agreement, the parties hereto agree that the provisions of the Sale and Servicing Agreement shall
be controlling.

     SECTION 11.20. Third Party Beneficiaries. This Indenture will inure to the benefit of
and be binding upon the parties hereto, the Class A Noteholders, the Note Owners, the Insurer and
their respective successors and permitted assigns. Except as otherwise provided in this Indenture,
no other person will have any right or obligation hereunder.

61

 

     IN WITNESS WHEREOF, the Issuer and the Indenture Trustee have caused this Indenture to be duly
executed by their respective officers, thereunto duly authorized and duly attested, all as of the
day and year first above written.

	 	 	 	 	 	 	 	 	 
	 	 	INDYMAC RESIDENTIAL ASSET-BACKED TRUST, SERIES 2004-LH1
	 
	 	 	By:	 	Wilmington Trust Company, not in its individual capacity but solely as Owner Trustee
	 
	 	 	 	 	By:	 	/s/ Janel R. Havrilla
	 	 	 	 	 	 	

	

	 	 	 	 	 	Name:
	 	Janel R. Havrilla
	

	 	 	 	 	 	Title:
	 	Financial Services Officer
	 
	 	 	DEUTSCHE BANK NATIONAL TRUST COMPANY,
	 	 	 	 	not in its individual capacity but solely as Indenture Trustee
	 
	 	 	 	 	By:	 	/s/ Brent Hoyler
	 	 	 	 	 	 	

	

	 	 	 	 	 	Name:
	 	Brent Hoyler
	

	 	 	 	 	 	Title:
	 	Associate
	 
	 	 	 	 	 	 	 	 
	 	 	 	 	By:	 	/s/ John Ingham
	 	 	 	 	 	 	

	

	 	 	 	 	 	Name:
	 	John Ingham
	

	 	 	 	 	 	Title:
	 	Associate

S-1

 

	 	 	 	 	 
	STATE OF DELAWARE

	 	 	)
	

	 	 	) ss.:

	COUNTY OF NEW CASTLE

	 	 	)

     BEFORE ME, the undersigned authority, a Notary Public in and for said county and state, on
this day personally appeared Janel R. Havrilla, known to me to be the person and officer whose name
is subscribed to the foregoing instrument and acknowledged to me that the same was the act of the
said Wilmington Trust Company, not in its individual capacity, but solely as Owner Trustee on
behalf of INDYMAC RESIDENTIAL ASSET-BACKED TRUST, SERIES 2004-LH1, a Delaware statutory trust, and
that such person executed the same as the act of said statutory trust for the purpose and
consideration therein expressed, and in the capacities therein stated.

     GIVEN UNDER MY HAND AND SEAL OF OFFICE, this 20th day of December 2004.

	 	 	 	 	 
	 	 	 
	 	                                            /s/ Kim Carroll
 	 
	 	Notary Public in and for the State of Delaware 	 
	 	 	 
	 

(Seal)

My commission expires:

May 28, 2006

 

 

	 	 	 	 	 
	STATE OF CALIFORNIA

	 	 	)	 
	

	 	) ss.:

	COUNTY OF ORANGE

	 	 	)	 

     BEFORE ME, the undersigned authority, a Notary Public in and for said county and state, on
this day personally appeared John Ingham, known to me to be the person and officer whose name is
subscribed to the foregoing instrument and acknowledged to me that the same was the act of Deutsche
Bank National Trust Company, national banking association, and that such person executed the same
as the act of said corporation for the purpose and consideration therein stated.

     GIVEN UNDER MY HAND AND SEAL OF OFFICE, this 20th day of December 2004.

	 	 	 	 	 
	 	 	 
	 	                                      /s/ Amy Lynn Stoddard
 	 
	 	Notary Public in and for the State of California 	 
	 	 	 
	 

(Seal)

My commission expires:

January 31, 2008

 

 

EXHIBIT A

FORM OF CLASS A NOTES

UNLESS THIS NOTE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A
NEW YORK CORPORATION (“DTC”), TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR
PAYMENT, AND ANY NOTE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH
OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER
USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

THE PRINCIPAL OF THIS NOTE IS PAYABLE IN INSTALLMENTS AS SET FORTH HEREIN. ACCORDINGLY, THE
OUTSTANDING PRINCIPAL AMOUNT OF THIS NOTE AT ANY TIME MAY BE LESS THAN THE AMOUNT SHOWN ON THE FACE
HEREOF.

PURSUANT TO THE AUCTION ADMINISTRATION AGREEMENT (AS DEFINED IN THE SALE AND SERVICING AGREEMENT),
THE HOLDER OF THIS CLASS A NOTE MAY BE REQUIRED TO SURRENDER THIS CLASS A NOTE PRIOR TO THE PAYMENT
DATE IN NOVEMBER 2006 TO THE NOTE REGISTRAR FOR REGISTRATION OF TRANSFER TO A THIRD-PARTY INVESTOR,
AND IN EXCHANGE THEREFOR THE HOLDER OF THIS CLASS A NOTE WILL BE ENTITLED TO RECEIVE, TO THE EXTENT
RECEIVED PURSUANT TO THE AUCTION ADMINISTRATION AGREEMENT, AN AMOUNT EQUAL THE PAR PRICE FOR THIS
NOTE.

	 	 	 
	No. 1

	 	CUSIP NO. 456606 GK 2
	 
	 	 
	Aggregate Class Note Principal Balance:

	 	Denomination of this Class A
	

	 	Note:
	 
	 	 
	$___

	 	$___

A-1

 

INDYMAC RESIDENTIAL ASSET-BACKED TRUST, SERIES 2004-LH1

INDYMAC RESIDENTIAL ASSET-BACKED NOTES,

SERIES 2004-LH1,

CLASS A

     INDYMAC RESIDENTIAL ASSET-BACKED TRUST, SERIES 2004-LH1, a statutory trust organized and
existing under the laws of the State of Delaware (herein referred to as the “Trust”), for value
received, hereby promises to pay to Cede & Co., or registered assigns, the principal sum of
$___payable on each Payment Date in an amount equal to the result obtained by
multiplying (i) a fraction the numerator of which is the initial principal amount of this Class A
Note and the denominator of which is the aggregate principal amount of all Class A Notes by (ii)
the aggregate amount, if any, payable from the Payment Account in respect of principal on the Class
A Note pursuant to Section 5.01 of the Sale and Servicing Agreement dated as of December 1, 2004
(the “Sale and Servicing Agreement”), among the Trust, IndyMac ABS, Inc., a Delaware corporation,
as depositor (the “Depositor”), IndyMac Bank, F.S.B., as seller and servicer (the “Seller”), and
Deutsche Bank National Trust Company, a national banking association, as Indenture Trustee (the
“Indenture Trustee”); provided, however, that the entire unpaid principal amount of this Note shall
be due and payable on the earliest to occur of (i) the Payment Date occurring in January 2037 (the
“Final Maturity Date”), (ii) the Redemption Date or (iii) the date on which an Event of Default
under the Indenture dated as of December 22, 2004, between the Trust and the Indenture Trustee
shall have occurred and be continuing, if the Class A Notes shall have been declared or shall have
otherwise become immediately due and payable in the manner provided in Section 5.2 of the
Indenture. Capitalized terms used but not defined herein shall have the meanings ascribed to them
in Article I of the Indenture, which also contains rules as to construction that shall be
applicable herein.

     The Trust will pay interest on this Note at the rate per annum described in the Sale and
Servicing Agreement with respect to the Class A Notes on the principal amount of this Note
outstanding on the preceding Payment Date (after giving effect to all payments of principal made on
the preceding Payment Date) on each Payment Date until the principal of this Note is paid or made
available for payment in full. Interest on this Note will accrue for each Payment Date during the
period from the preceding Payment Date to the day preceding such Payment Date (or, in the case of
the first Payment Date, the period from the Closing Date to the day preceding the First Payment
Date) (each, an “Interest Period”). Interest will be computed on the basis of the actual number of
days in each Interest Period and a 360 day year. Such principal of and interest on this Note shall
be paid in the manner specified on the reverse hereof.

     The principal of and interest on this Note are payable in such coin or currency of the United
States of America as at the time of payment is legal tender for payment of public and private
debts. All payments made by the Trust with respect to this Note shall be applied first to interest
due and payable on this Note as provided above and then to the unpaid principal of this Note.

     Reference is made to the further provisions of this Note set forth on the reverse hereof,
which shall have the same effect as though fully set forth on the face of this Note.

A-2

 

     Unless the certificate of authentication hereon has been executed by the Indenture Trustee
whose name appears below by manual signature, this Note shall not be entitled to any benefit under
the Indenture referred to on the reverse hereof, or be valid or obligatory for any purpose.

A-3

 

     IN WITNESS WHEREOF, the Trust has caused this instrument to be signed, manually or in
facsimile, by its Authorized Officer, as of the date set forth below.

Date: December 22, 2004

	 	 	 	 	 
	 	 	INDYMAC RESIDENTIAL ASSET-BACKED TRUST, SERIES 2004-LH1
	 
	 	 	 	 
	

	 	By:
	 	Wilmington Trust Company,
not in its individual capacity but solely as Owner Trustee under the Trust Agreement
	 
	 	 	 	 
	

	 	By:
	 	

	

	 	 	 	Authorized Signatory

INDENTURE TRUSTEE’S CERTIFICATE OF AUTHENTICATION

This is one of the Notes designated above and referred to in the within mentioned Indenture.

Date: December 22, 2004

	 	 	 	 	 
	 	DEUTSCHE BANK NATIONAL TRUST COMPANY

not in its individual capacity but

solely as Indenture Trustee,

 	 
	 	By:  	 	 
	 	 	Authorized Signatory 	 
	 	 	 	 
	 

A-4

 

(REVERSE OF NOTE)

     This Note is one of a duly authorized issue of Notes of the Trust, designated as its IndyMac
Residential Asset-Backed Notes, Series 2004-LH1, Class A, all issued under the Indenture, to which
Indenture and all indentures supplemental thereto reference is hereby made for a statement of the
respective rights and obligations thereunder of the Trust, the Indenture Trustee and the Holders of
the Notes. The Class A Notes are subject to all terms of the Indenture.

     The Class A Notes are and will be secured by the collateral pledged as security therefor as
provided in the Indenture.

     Principal of the Class A Notes will be payable on each Payment Date in an amount described on
the face hereof. “Payment Date” means the 27th day of each month, or, if any such date is not a
Business Day, the next succeeding Business Day, commencing in January 2005.

     As described above, the entire unpaid principal amount of this Note shall be due and payable
on the earlier of the Final Maturity Date and the Redemption Date. Notwithstanding the foregoing,
the entire unpaid principal amount of the Notes shall be due and payable on the date on which an
Event of Default under the Indenture shall have occurred and be continuing and the Class A Notes
shall have been declared or shall have otherwise become immediately due and payable in the manner
provided in Section 5.2 of the Indenture. All principal payments on the Class A Notes shall be
made pro rata to the Holders of the Class A Notes entitled thereto.

     Payments of interest on this Note due and payable on each Payment Date, together with the
related installment of principal, if any, to the extent not in full payment of this Note, shall be
made by check or money order mailed to, the Person whose name appears as the Registered Holder of
this Note (or one or more Predecessor Notes) on the Note Register as of the close of business on
each Record Date or by wire transfer in immediately available funds to the account designated by
such Registered Holder to Indenture Trustee at least five Business Days prior to such Record Date.
Such checks shall be mailed to the Person entitled thereto at the address of such Person as it
appears on the Note Register as of the applicable Record Date without requiring that this Note be
submitted for notation of payment. Any reduction in the principal amount of this Note (or any one
or more Predecessor Notes) effected by any payments made on any Payment Date shall be binding upon
all future Holders of this Note and of any Note issued upon the registration of transfer hereof or
in exchange hereof or in lieu hereof, whether or not noted hereon. If funds are expected to be
available, as provided in the Indenture, for payment in full of the then remaining unpaid principal
amount of this Note on a Payment Date, then the Indenture Trustee, in the name of and on behalf of
the Trust, will notify the Person who was the Registered Holder hereof as of the Record Date
preceding such Payment Date by notice mailed or transmitted by facsimile prior to such Payment
Date, and the amount then due and payable shall be payable only upon presentation and surrender of
this Note at the office of the Indenture Trustee’s agent appointed for such purposes located in New
York, New York.

     As provided in the Sale and Servicing Agreement, the Class A Notes may be redeemed in whole,
but not in part, at the direction of the Servicer, on any Payment Date on and after the date

A-5

 

on which the Class A Note Principal Balance is less than or equal to 10% of the Original Class
A Note Principal Balance.

     As provided in the Indenture and subject to certain limitations set forth therein, the
transfer of this Note may be registered on the Note Register upon surrender of this Note for
registration of transfer at the office or agency designated by the Trust pursuant to the Indenture,
duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the
Indenture Trustee duly executed by, the Holder hereof or such Holder’s attorney duly authorized in
writing, with such signature guaranteed by an “eligible guarantor institution” meeting the
requirements of the Note Registrar, which requirements include membership or participation in the
Securities Transfer Agent’s Medallion Program (“STAMP”) or such other “signature guarantee program”
as may be determined by the Note Registrar in addition to, or in substitution for, STAMP, all in
accordance with the Securities Exchange Act of 1934, as amended, and thereupon one or more new
Notes of authorized denominations and in the same aggregate principal amount will be issued to the
designated transferee or transferees. No service charge will be charged for any registration of
transfer or exchange of this Note, but the Trust or Indenture Trustee may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed in connection with any
such registration of transfer or exchange other than exchanges pursuant to Section 2.4 (mutilated,
destroyed, lost or stolen Notes) or Section 9.6 (new Notes modified to conform to supplemental
indentures) of the Indenture not involving any transfer. By acquiring this Note, the Class A
Noteholder hereof shall be deemed to represent and warrant that either (a) it is not acquiring the
Note with the plan assets of an “employee benefit plan” as defined in Section 3(3) of ERISA, which
is subject to Title I of ERISA, or a “plan” as defined in Section 4975 of the Code or an employee
benefit plan or other retirement arrangement subject to any federal, state, local or foreign law
that is similar to Title I of ERISA or Section 4975 of the Code (“Similar Law”) or any entity
deemed to hold the plan assets of the foregoing; or (b) the acquisition and holding of the Class A
Note will satisfy the requirements for exemptive relief under Prohibited Transaction Class
Exemption (“PTCE”) 84-14, PTCE 90-1, PTCE 91-38, PTCE 95-60, PTCE 96-23 or a similar exemption, or
in the case of a plan or arrangement subject to a Similar Law, will not result in a non-exempt
violation of such Similar Law.

     Each Class A Noteholder or Note Owner, by acceptance of a Note or, in the case of a Note
Owner, a security entitlement with respect to a Note, covenants and agrees that no recourse may be
taken, directly or indirectly, with respect to the obligations of the Trust, the Owner Trustee or
the Indenture Trustee on the Notes or under the Indenture or any certificate or other writing
delivered in connection therewith, against (i) the Indenture Trustee or the Owner Trustee in its
individual capacity, (ii) any owner of a beneficial interest in the Trust or (iii) any partner,
owner, beneficiary, agent, officer, director or employee of the Indenture Trustee or the Owner
Trustee in its individual capacity, any holder of a beneficial interest in the Trust, the Owner
Trustee or the Indenture Trustee or of any successor or assign of the Indenture Trustee or the
Owner Trustee in its individual capacity, except as any such Person may have expressly agreed and
except that any such partner, owner or beneficiary shall be fully liable, to the extent provided by
applicable law, for any unpaid consideration for stock, unpaid capital contribution or failure to
pay any installment or call owing to such entity.

A-6

 

     Each Class A Noteholder or Note Owner, by acceptance of a Note or, in the case of a Note
Owner, a security entitlement with respect to a Note, covenants and agrees by accepting the
benefits of the Indenture that such Class A Noteholder or Note Owner will not at any time institute
against the Transferor (and any wholly-owned subsidiary thereof), the Depositor, the Servicer or
the Issuer, or join in any institution against the Transferor (and any wholly-owned subsidiary
thereof), the Depositor, the Servicer or the Issuer of, any bankruptcy, reorganization,
arrangement, insolvency or liquidation proceedings under any United States federal or state
bankruptcy or similar law in connection with any obligations relating to the Notes, the Indenture
or the Transaction Documents.

     The Trust has entered into the Indenture and this Note is issued with the intention that, for
all tax purposes, the Notes will qualify as indebtedness of the Trust secured by the Trust Estate.
Each Class A Noteholder, by acceptance of a Note (and each Note Owner by acceptance of a beneficial
interest in a Note), agrees to treat the Notes for all purposes as indebtedness of the Trust.

     Prior to the due presentment for registration of transfer of this Note, the Trust, the
Indenture Trustee and any agent of the Trust or the Indenture Trustee may treat the Person in whose
name this Note (as of the day of determination or as of such other date as may be specified in the
Indenture) is registered as the owner hereof for all purposes, whether or not this Note be overdue,
and none of the Trust, the Indenture Trustee or any such agent shall be affected by notice to the
contrary.

     The Indenture permits, with certain exceptions as therein provided, the amendment thereof and
the modification of the rights and obligations of the Trust and the rights of the Holders of the
Notes under the Indenture at any time by the Trust with the consent of the Holders of Notes
representing a majority of the Outstanding Amount of all Notes at the time Outstanding, the Rating
Agencies and the Insurer. The Indenture also contains provisions permitting the Holders of Notes
representing specified percentages of the Outstanding Amount of the Notes, on behalf of the Holders
of all the Notes, to waive compliance by the Trust with certain provisions of the Indenture and
certain past defaults under the Indenture and their consequences. Any such consent or waiver by
the Holder of this Note (or any one or more Predecessor Notes) shall be conclusive and binding upon
such Holder and upon all future Holders of this Note and of any Note issued upon the registration
of transfer hereof or in exchange hereof or in lieu hereof whether or not notation of such consent
or waiver is made upon this Note. The Indenture also permits the Indenture Trustee to amend or
waive certain terms and conditions set forth in the Indenture without the consent of Holders of the
Notes issued thereunder.

     The term “Trust” as used in this Note includes any successor to the Trust under the Indenture.

     The Notes are issuable only in registered form in denominations as provided in the Indenture,
subject to certain limitations therein set forth.

     This Note and the Indenture shall be construed in accordance with the laws of the State of New
York, without reference to its conflict of law provisions, and the obligations, rights and

A-7

 

remedies of the parties hereunder and thereunder shall be determined in accordance with such
laws.

     No reference herein to the Indenture and no provision of this Note or of the Indenture shall
alter or impair the obligation of the Trust, which is absolute and unconditional, to pay the
principal of and interest on this Note at the times, place and rate, and in the coin or currency
herein prescribed.

     Anything herein to the contrary notwithstanding, except as expressly provided in the
Transaction Documents, none of the Trust in its individual capacity, the Owner Trustee in its
individual capacity, any owner of a beneficial interest in the Trust, or any of their respective
partners, beneficiaries, agents, officers, directors, employees or successors or assigns shall be
personally liable for, nor shall recourse be had to any of them for, the payment of principal of or
interest on this Note or performance of, or omission to perform, any of the covenants, obligations
or indemnifications contained in the Indenture. The Holder of this Note by its acceptance hereof
agrees that, except as expressly provided in the Transaction Documents, in the case of an Event of
Default under the Indenture, the Holder shall have no claim against any of the foregoing for any
deficiency, loss or claim therefrom; provided, however, that nothing contained herein shall be
taken to prevent recourse to, and enforcement against, the assets of the Trust for any and all
liabilities, obligations and undertakings contained in the Indenture or in this Note.

A-8

 

ASSIGNMENT

Social Security or taxpayer I.D. or other identifying number of assignee: __________________

     FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers unto:

(name and address of assignee)

the within Note and all rights thereunder, and hereby irrevocably constitutes and appoints
        , attorney, to transfer said Note on the books kept for registration thereof, with full power of
substitution in the premises.

	 	 	 	 	 
	Dated:

	 	

	 	 

	 	 	 	 	 
	 

	 	

	 	*/
	

	 	Signature Guaranteed:	 	 
	 
	 	 	 	 
	 

	 	

	 	*/

	*/ NOTICE: The signature to this assignment must correspond with the name of the registered owner
as it appears on the face of the within Note in every particular, without alteration, enlargement
or any change whatever. Such signature must be guaranteed by an “eligible guarantor institution”
meeting the requirements of the Note Registrar, which requirements include membership or
participation in STAMP or such other “signature guarantee program” as may be determined by the Note
Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities
Exchange Act of 1934, as amended.

A-9

 

EXHIBIT B

REPRESENTATIONS AND WARRANTIES

REGARDING MORTGAGE LOANS

     The Issuer hereby assigns to the Indenture Trustee for the benefit of the Class A Noteholders
the following representations and warranties made by the Seller as of the Cut-Off Date:

     (i) The information with respect to each Mortgage Loan set forth in the Mortgage Loan
Schedule is complete, true and correct in all material respects as of the Cut-Off Date;

     (ii) As of the Closing Date, for each Mortgage Loan, the related Mortgage File contains
the documents and instruments referred to in Section 2.01(b)(ii);

     (iii) Each Mortgaged Property relating to a HELOC is improved by a residential
dwelling, which does not include cooperatives or mobile homes and does not constitute other
than real property under state law;

     (iv) Each Mortgaged Property relating to a Residential Lot Loan consists of vacant,
improved land that does not have structured improvements thereon as of the Cut-off Date;

     (v) Each Mortgage Loan is being serviced by the Servicer or one or more Subservicers
according to Accepted Servicing Practices;

     (vi) Each Mortgage Note provides for (a) Monthly Payments which are at least equal to
accrued interest during such Accrual Period and (b) at the maturity of the related Mortgage
Loan, payment in full of the principal balance of such Mortgage Note;

     (vii) The Mortgage Notes related to HELOCs and 93.61% of the Residential Lot Loans bear
a variable Loan Rate and the Mortgage Notes related to 6.39% of the Residential Lot Loans
bear a fixed Loan Rate and there is only one original of each such Mortgage Note;

     (viii) Each Mortgage is a valid and subsisting first, second or third lien of record on
the Mortgaged Property subject, in the case of any second or third Mortgage Loan, only to a
Senior Lien or Senior Liens on such Mortgaged Property and subject in all cases to the
exceptions to title set forth in the title insurance policy, if any, with respect to the
related Mortgage Loan, which exceptions are generally acceptable to second mortgage lending
companies (or first mortgage lending companies in the case of first lien Mortgage Loans),
and such other exceptions to which similar properties are commonly subject and which do not
individually, or in the aggregate, materially and adversely affect the benefits of the
security intended to be provided by such Mortgage;

B-1

 

     (ix) No Mortgage Note and related Mortgage has been assigned or pledged and immediately
prior to the transfer and assignment contemplated in the Mortgage Loan Purchase Agreement,
the Seller held good, marketable and indefeasible title to, and was the sole owner and
holder of, each Mortgage Loan subject to no Liens (other than a Senior Lien, if any); the
Seller has full right and authority under all governmental and regulatory bodies having
jurisdiction over the Seller, subject to no interest or participation of, or agreement with,
any party, to sell and assign the same pursuant to the Mortgage Loan Purchase Agreement; and
immediately upon the transfer and assignment therein contemplated, the Seller shall have
transferred all of its right, title and interest in and to each Mortgage Loan to the
Purchaser (or its assignee) and the Purchaser (or its assignee) will hold good, equitable,
and when recorded, marketable title to, and be the sole owner of, each Mortgage Loan subject
to no Liens (other than a Senior Lien, if any); without limiting the generality of the
foregoing, the Seller has taken all steps necessary to effect the release of each Mortgage
Loan from any lien thereon held by a Federal Home Loan Bank;

     (x) To the best of the Seller’s knowledge, none of the Mortgage Loans is subject to a
bankruptcy proceeding;

     (xi) As of the Cut-Off Date, none of the Mortgage Loans was more than 30 days
Delinquent;

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

     (xiii) To the best of the Seller’s knowledge, there is no mechanics’ lien or claim for
work, labor or material affecting any Mortgaged Property which is or may be a lien prior to,
or equal or coordinate with, the lien of the related Mortgage, and no rights are outstanding
that under law could give rise to such a lien except those which are insured against by the
title insurance policy;

     (xiv) (a) Each Mortgage Loan at the time it was made complied with, and each Mortgage
Loan at all times was serviced in compliance with, in each case, in all material respects,
applicable state, local and federal laws and regulations, including, without limitation,
usury, equal credit opportunity, consumer credit, applicable predatory and abusive lending
laws, truth in lending and disclosure laws and (b) no Mortgage Loan is classified as (1) a
“high cost” loan under the Home Ownership and Equity Protection Act of 1994 or (2) a “high
cost,” “threshold,” “covered,” “predatory” or similar loan under any other applicable state,
federal or local law which applies to mortgage loans originated by a state-chartered bank or
any state or local law, rule or regulation applicable to the Mortgage Loans (or a similar
classified loan using different terminology under a

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law imposing heightened regulatory scrutiny or additional legal liability for
residential mortgage loans having high interest rates, points and/or fees);

     (xv) (a) No Mortgage Loan is a “High Cost Loan” or “Covered Loan,” as applicable (as
such terms are defined in Standard & Poor’s LEVELS® Version 5.6 Glossary Revised,
Appendix E), (b) no Mortgage Loan originated on or after October 1, 2002 through March 6,
2003 is governed by the Georgia Fair Lending Act and (c) no Mortgage Loan originated in the
State of Illinois is governed by the Illinois Interest Act (815 ILCS 205);

     (xvi) To the best of the Seller’s knowledge, the improvements upon each Mortgaged
Property relating to HELOCs are covered by a valid and existing hazard insurance policy with
a generally acceptable carrier that provides for fire and extended coverage representing
coverage described in Sections 3.04 and 3.05;

     (xvii) To the best of the Seller’s knowledge, a flood insurance policy is in effect
with respect to each Mortgaged Property with a generally acceptable carrier in an amount
representing coverage described in Sections 3.04 or 3.05, if and to the extent required by
Sections 3.04 or 3.05;

     (xviii) To the best of the Seller’s knowledge, each Mortgage and Mortgage Note is the
legal, valid and binding obligation of the related Mortgagor and is enforceable in
accordance with its terms, except only as such enforcement may be limited by bankruptcy,
insolvency, reorganization, moratorium or other similar laws affecting the enforcement of
creditors’ rights generally and by general principles of equity (whether considered in a
proceeding or action in equity or at law), and all parties to each Mortgage Loan and the
Mortgagee had full legal capacity to execute all Mortgage Loan documents and to convey the
estate therein purported to be conveyed. No fraud, error, omission, misrepresentation,
negligence or similar occurrence with respect to a Mortgage Loan has taken place on the part
of the Seller or the Mortgagor or to the Seller’s knowledge, on the part of any other party
involved in the origination of the Mortgage Loan;

     (xix) As of the Cut-Off Date, no more than 0.7% of the Mortgage Loans (by the Cut-Off
Date Pool Principal Balance) are secured by Mortgaged Properties located within any single
zip code area. As of the Cut-Off Date, all of the Mortgage Loans are secured by Mortgaged
Properties that are owner-occupied residences, based on representations by the related
Mortgagors made by such Mortgagors at origination;

     (xx) The terms of the Mortgage Note and the Mortgage have not been impaired, altered or
modified in any material respect, except by a written instrument which has been recorded or
is in the process of being recorded and which has been or will be held by the Seller or
delivered to the Indenture Trustee in accordance with the provisions of this Agreement. The
substance of any such alteration or modification is reflected on the related Mortgage Loan
Schedule and was approved, if required, by the related primary mortgage guaranty insurer, if
any. Each original Mortgage was recorded, and all subsequent assignments of the original
Mortgage have been recorded in the

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appropriate jurisdictions wherein such recordation is necessary to perfect the lien
thereof as against creditors of the Seller, or are in the process of being recorded;

     (xxi) As of the Closing Date, no Mortgage has been satisfied cancelled or subordinated,
in whole, or rescinded, and no instrument of release or waiver has been executed in
connection with any Mortgage Loan, and no Mortgage has been released in whole or in part, in
either case, that would have a material adverse affect on the related Mortgage Loan;

     (xxii) To the best of the Seller’s knowledge (i) there is no proceeding pending or
threatened for the total or partial condemnation of any Mortgaged Property, nor is such a
proceeding currently occurring, and (ii) as of the Cut-off Date and the Closing Date, each
Mortgaged Property is in good repair and is free of damage by waste, fire, earthquake or
earth movement, flood, tornado, hurricane or other casualty that would affect adversely the
value of the Mortgaged Property as security for the related Mortgage Loan or the use for
which the premises were intended;

     (xxiii) To the best of the Seller’s knowledge, all of the improvements which were
included for the purpose of determining the appraised value of the Mortgaged Property lie
wholly within the boundaries and building restriction lines of such property, and no
improvements on adjoining properties encroach upon the Mortgaged Property;

     (xxiv) To the best of the Seller’s knowledge, no improvement located on or being part
of the Mortgaged Property is in violation of any applicable zoning law or regulation and all
inspections, licenses and certificates required to be made or issued with respect to all
occupied portions of the Mortgaged Property, in the case of a HELOC and, with respect to the
use and occupancy of the same, including but not limited to certificates of occupancy and
fire underwriting certificates, have been made or obtained from the appropriate authorities
and, in the case of a HELOC, the related Mortgaged Property is lawfully occupied under
applicable law;

     (xxv) All costs, fees and expenses incurred in making or closing or recording the
Mortgage Loans were paid, and no Mortgagor is entitled to any refund of any such amount paid
or due under the related Mortgage or Mortgage Note;

     (xxvi) No Mortgage Note is or was secured by any collateral, pledged account or other
security except the lien of the corresponding Mortgage;

     (xxvii) There is no obligation on the part of the Seller or any other party to make
payments in addition to those made by the Mortgagor;

     (xxviii) Each Mortgage Loan conforms, and all such Mortgage Loans in the aggregate
conform in all material respects to the description thereof set forth in the Exhibit P;

     (xxix) With respect to each Mortgage constituting a deed of trust, a trustee, duly
qualified under applicable law to serve as such, has been properly designated and currently
so serves and is named in such Mortgage, and no fees or expenses are or will

B-4

 

become payable by the Trust, the Indenture Trustee or the Class A Noteholders to the
trustee under the deed of trust, except in connection with a trustee’s sale after default by
the Mortgagor;

     (xxx) No Mortgage Loan has a shared appreciation feature, or other contingent interest
feature;

     (xxxi) To the best of the Seller’s knowledge there is no delinquent tax or assessment
lien or judgment on any Mortgaged Property;

     (xxxii) Each Mortgage contains customary and enforceable provisions which, subject to
clause (xvii) above, render the rights and remedies of the holder thereof adequate for the
realization against the related Mortgaged Property of the benefits of the security,
including (A) in the case of a Mortgage designated as a deed of trust, by trustee’s sale and
(B) otherwise by judicial or non-judicial foreclosure, as applicable in the relevant
jurisdiction;

     (xxxiii) Each Mortgage contains a customary provision for the acceleration of the
payment of the unpaid principal balance of the Mortgage Loan in the event the related
security for the Mortgage Loan is sold without the prior consent of the mortgagee
thereunder;

     (xxxiv) Except as set forth in clause (x) above, to the best of the Seller’s knowledge,
there is no default, breach, violation or event of acceleration existing under any Mortgage
or the related Mortgage Note and no event which, with the passage of time or with notice and
the expiration of any grace or cure period, would constitute a default, breach, violation or
event of acceleration; and the Seller has not waived any default, breach, violation or event
of acceleration;

     (xxxv) All parties to the Mortgage Note and the Mortgage had legal capacity to execute
the Mortgage Note and the Mortgage and each Mortgage Note and Mortgage have been duly and
properly executed by such parties;

     (xxxvi) All of the Mortgage Loans were originated substantially in accordance with the
applicable Originator’s underwriting criteria in effect at the time of origination;

     (xxxvii) The Mortgage Loans were not selected by the Seller for inclusion in the Trust
on any basis intended to adversely affect the Trust, the Class A Noteholders or the Insurer;
and each Mortgage Note and Mortgage is in substantially one of the forms attached as Exhibit
E and Exhibit F;

     (xxxviii) No Mortgage Loan had a Combined Loan to Value Ratio at the time of
origination of more than 101%;

     (xxxix) Each Mortgage Loan was originated by the Originator listed on the Mortgage Loan
Schedule and was acquired in the ordinary course of business by the Seller;

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     (xl) As of the Closing Date, the Seller has not received a notice of default of a
Senior Lien which has not been cured;

     (xli) Each of the documents and instruments included in a Mortgage File referred to in
Section 2.01(b)(ii)(A) and (C) through (F) is, and at such time as Assignments of Mortgage
are required to have been prepared, such Assignments of Mortgage will have been, duly
executed and in due and proper form and each such document or instrument is or will be in a
form generally acceptable to prudent institutional mortgage lenders that regularly originate
or purchase mortgage loans similar to the Mortgage Loans;

     (xlii) The Conveyed Assets constitute either “instruments” or “general intangibles”
within the meaning of the New York UCC;

     (xliii) All consents and approvals required by the terms of each Mortgage Loan to the
sale of such Mortgage Loan to the Purchaser under the Mortgage Loan Purchase Agreement have
been obtained;

     (xliv) Other than the security interest granted by the Seller to the Purchaser pursuant
to the Mortgage Loan Purchase Agreement and other than any security interest which shall
have been released immediately prior to the consummation of the transactions contemplated
hereby, the Seller has not pledged, assigned, released, sold, granted a security interest
in, or otherwise conveyed any of the Mortgage Loans. The Seller has not authorized the
filing of and is not aware of any financing statements against the Seller that include a
description of collateral covering the Mortgage Loans other than any financing statement
relating to the security interest granted to the Purchaser under the Mortgage Loan Purchase
Agreement. The Seller is not aware of any judgment or tax lien filings against the Seller;

     (xlv) The Servicer has in its possession all original copies of the Mortgage Notes that
constitute or evidence the Mortgage Loans. The Mortgage Notes that constitute or evidence
the Mortgage Loans do not have any marks or notations indicating that they have been
pledged, assigned or otherwise conveyed to any Person other than the Purchaser. All
financing statements filed or to be filed in favor of the Purchaser in connection herewith
describing the Mortgage Loans contain a statement to the following effect: “A purchase of
or security interest in any collateral described in this financing statement will violate
the rights of the Indenture Trustee;”

     (xlvi) As of the Closing Date, no Mortgage Loans are subject to assumption or
modification agreements;

     (xlvii) Each Mortgage Loan contains an appraisal conforming to the standards of the
applicable Originator as described on Exhibit R to this Agreement;

     (xlviii) No Mortgage Loan contains “subsidized buydown,” graduated payment or
convertible loan features; and

B-6

 

     (xlix) No more than 2% of the Pool Balance has been granted relief under the
Servicemembers’ Civil Relief Act.

     It is understood and agreed that the each of the foregoing representations and warranties of
the Seller may not be waived and shall survive the issuance of the Notes.

     With respect to the representations and warranties set forth in this Section that are made to
the best of the Seller’s knowledge or as to which the Seller has no knowledge, if it is discovered
by the Seller, the Depositor, the Servicer, the Owner Trustee, the Insurer or the Indenture Trustee
(in the case of the Indenture Trustee, upon a Responsible Officer of the Indenture Trustee
obtaining actual knowledge) that the substance of such representation and warranty is inaccurate
and such inaccuracy materially and adversely affects the value of the related Mortgage Loan then,
notwithstanding the Seller’s lack of knowledge with respect to the substance of such representation
and warranty being inaccurate at the time the representation or warranty was made, such inaccuracy
shall be deemed a breach of the applicable representation or warranty and with respect to any
breach of such representation or warranty or of any other representation or warranty, the Seller
shall cure, repurchase or substitute in accordance with this Agreement. Breach of the
representations and warranties made in clauses (x), (xviii) and (xxvii) above shall require
repurchase of Mortgage Loans selected on a random basis to the extent necessary to cure the breach.

     It is understood and agreed that the representations and warranties set forth in this Section
shall survive the transfer of the Mortgage Loans to the Trust and the termination of the rights and
obligations of the Servicer pursuant to Section 6.04 or 7.01 herein. Upon discovery by the Seller,
the Depositor, the Servicer, the Owner Trustee, the Insurer or the Indenture Trustee (in the case
of the Indenture Trustee, upon a Responsible Officer of the Indenture Trustee obtaining actual
knowledge) of a breach of any of the foregoing representations and warranties, without regard to
any limitation set forth therein concerning the knowledge of the Seller as to the facts stated
therein, which materially and adversely affects the value of the related Mortgage Loan or the
interests of the Trust, the Class A Noteholders or the Insurer in the related Mortgage Loan, the
party discovering such breach shall give prompt written notice to the other parties and the
Insurer. Within 90 days of its discovery or its receipt of notice of breach, the Seller shall use
all reasonable efforts to cure such breach in all material respects and if such breach is not cured
by the end of such 90-day period, the Seller shall purchase such Mortgage Loan from the Trust or
substitute an Eligible Substitute Mortgage Loan for such Mortgage Loan on the Determination Date in
the month following the month in which such 90-day period expired at the Purchase Price of such
Mortgage Loan or, in the case of a substitution, in accordance with Section 2.05. The Purchase
Price and any Substitution Adjustments for the purchased Mortgage Loan shall be remitted to the
Servicer for deposit in the Collection Account on the Determination Date immediately following such
90-day period, as certified by the Seller to the Indenture Trustee; provided that the Servicer
shall remit to the Indenture Trustee, who shall then remit to the Insurer, the portion of the
amount, if any, of the Purchase Price referred to in clause (iv) of the definition thereof to the
extent such amount is incurred by or imposed on the Insurer. It is understood and agreed that the
obligation of the Seller to purchase any Mortgage Loan or substitute an Eligible Substitute
Mortgage Loan for such Mortgage Loan as to which a material defect in or omission of a constituent
document exists shall constitute the sole remedy against the

B-7

 

Seller respecting such defect or omission available to the Insurer, the Class A Noteholders,
the Indenture Trustee or the Certificateholders.

     The Servicer, promptly following the transfer of (i) a Defective Mortgage Loan from or (ii) an
Eligible Substitute Mortgage Loan to the Trust pursuant to this Section and Section 2.05, as the
case may be, shall amend the Mortgage Loan Schedule through a Supplemental Mortgage Loan Schedule
and make appropriate entries in its general account records to reflect such transfer and the
addition of any Eligible Substitute Mortgage Loan, if applicable. It is understood and agreed that
the obligation of the Seller to cure, substitute or purchase any Mortgage Loan as to which a breach
has occurred and is continuing shall constitute the sole remedy against the Seller respecting such
breach available to Class A Noteholders, the Insurer and the Indenture Trustee on behalf of the
Class A Noteholders and the Certificateholders in respect of their respective interests in the
Trust.

     All defined terms used herein and not otherwise defined shall have the meanings assigned to
them in the Sale and Servicing Agreement.

B-8exv4w3

 

Exhibit 4.3

CERTIFICATE GUARANTY INSURANCE POLICY ENDORSEMENT

	 	 	 	 	 	 	 	 
	 	 	 	 	 	 
	 	Attached to and forming part of
	 	 	Effective Date of Endorsement:	 
	 	Certificate Guaranty Insurance Policy
	 	 	December 22, 2004	 
	 	# AB0851BE issued to:
	 	 	 	 	 	 
	 	 	 	 	 	 

Deutsche Bank National Trust Company

as Indenture Trustee for the Holders of

IndyMac Residential Asset-Backed Trust, Series 2004-LH1

IndyMac Residential Asset-Backed Notes, Series 2004-LH1

          For all purposes of the Policy, the following terms shall have the following meanings:

          “Agreements” shall mean, for purposes of the Policy, the Sale and Servicing Agreement and the
Indenture.

          “Business Day” shall mean any day other than (i) a Saturday or Sunday or (ii) a day on which
banking institutions in the state of New York or the state of California or the city in which the
Corporate Trust Office or the office of the Insurer is located are required or authorized by law or
executive order to be closed.

          “Class A Interest Distribution Amount” means, for any Payment Date, the Class A Monthly
Interest Distributable Amount (excluding any Relief Act Shortfalls, Prepayment Interest Shortfalls
and shortfalls in interest due to prepayments in full made on the HELOCs); provided, that the Class
A Interest Distribution Amount shall not include (x) any portion of a Class A Monthly Interest
Distributable Amount, Class A Interest Carryover Shortfall or of a Class A Outstanding Interest
Carryover Shortfall due to Holders because the Notice in proper form was not timely received by the
Insurer or any LIBOR Interest Carryover Amount or LIBOR Interest Carryover Shortfall or (y) any
portion of a Class A Monthly Interest Distributable Amount, Class A Interest Carryover Shortfall or
of a Class A Outstanding Interest Carryover Shortfall due to Holders representing interest on any
prior unpaid Class A Monthly Interest Distributable Amount unless such amounts arose as a result of
the failure of the Insurer to make a payment under the Policy required to be made in accordance
with the terms of the Policy for which a Notice in proper form was timely received by the Insurer.

          “Class A Notes” shall mean any one of the IndyMac Residential Asset-Backed Notes, Series
2004-LH1, substantially in the form set forth in Exhibit A to the Indenture.

          “Class A Principal Distribution Amount” shall mean, (a) if the Revolving Period has ended,
with respect to any Payment Date other than the Final Payment Date, the amount, if any, by which
the Class A Note Principal Balance (after giving effect to all payment of principal on the Class A
Notes on such Payment Date pursuant to Section

 

 

5.01 of the Sale and Servicing Agreement, without giving effect to payments under the Policy
to be made on such Payment Date) exceeds the Invested Amount as of the end of the related Due
Period and (b) with respect to the Final Payment Date, the outstanding Class A Note Principal
Balance (after giving effect to all payments of principal on the Class A Notes on such Final
Payment Date pursuant to Section 5.01(a) of the Sale and Servicing Agreement.

          “Deficiency Amount” shall mean for any Payment Date, an amount equal to the sum of (x) the
excess of the Class A Interest Distribution Amount (excluding any Relief Act Shortfalls, Prepayment
Interest Shortfalls and shortfalls in interest due to prepayments in full made on the HELOCs) over
the Investor Interest Amounts available for distribution to the Holders after payment of the
amounts due under Section 5.01(a)(I)(i), (ii) and (iii) of the Sale and Servicing Agreement and (y)
the Class A Principal Distribution Amount for such Payment Date. For the avoidance of doubt, the
Deficiency Amount shall not include any amounts relating to the failure of an auction of the Class
A Notes (other than the amounts set forth in clauses (x) and (y) above). Notwithstanding anything
to the contrary contained herein, the aggregate Deficiency Amount described above which may be paid
under the Policy shall not exceed the Maximum Insured Amount.

          “Due for Payment” shall mean, (i) with respect to an Insured Amount, the Payment Date on which
Insured Amounts are due and payable pursuant to the terms of the Indenture and (ii) with respect to
a Preference Amount, the Business Day on which the documentation required by the Insurer has been
received by the Insurer.

          “Final Payment Date” shall mean the Payment Date occurring in January 2037.

          “First Payment Date” shall mean January 27, 2005.

          “Holder” shall mean the registered owner or beneficial owner of a Class A Note.

          “Indenture” shall mean the Indenture between the Issuer and the Indenture Trustee, dated
December 22, 2004.

          “Indenture Trustee” shall mean Deutsche Bank National Trust Company, or its
successor-in-interest, in its capacity as Indenture Trustee under the Indenture, or if any
successor trustee shall be appointed as provided therein, then “Indenture Trustee” shall also mean
such successor trustee, subject to the provisions thereof.

          “Insurance Agreement” shall mean the Insurance and Indemnity Agreement, dated as of December
22, 2004, among IndyMac ABS, Inc., as Depositor, IndyMac Bank, F.S.B., as Seller and Servicer,
Deutsche Bank National Trust Company, as Indenture Trustee, the Insurer, and IndyMac Residential
Asset-Backed Trust, Series 2004-LH1, as Issuer, as such agreement may be amended, modified or
supplemented from time to time.

2

 

          “Insured Amount” shall mean, with respect to any Payment Date, the Deficiency Amount for such
Payment Date.

          “Insured Payments” shall mean, with respect to any Payment Date, the aggregate amount actually
paid by the Insurer to, or at the direction of, the Indenture Trustee in respect of (i) Insured
Amounts for a Payment Date and (ii) Preference Amounts for any given Business Day.

          “Insurer” shall mean Ambac Assurance Corporation, or any successor thereto, as issuer of the
Policy.

          “Issuer” means IndyMac Residential Asset-Backed Trust, Series 2004-LH1.

          “Late Payment Rate” shall mean for any Payment Date, the lesser of (i) the greater of (a) the
rate of interest, as it is publicly announced by Citibank, N.A. at its principal office in New
York, New York as its prime rate (any change in such prime rate of interest to be effective on the
date such change is announced by Citibank, N.A.) plus 2% and (b) the then applicable highest rate
of interest on the Class A Notes and (ii) the maximum rate permissible under applicable usury or
similar laws limiting interest rates. The Late Payment Rate shall be computed on the basis of the
actual number of days elapsed over a year of 360 days.

          “LIBOR Interest Carryover Amount” shall mean, with respect to any Payment Date and the Class A
Notes, the excess of the amount of interest that would have been due to Holders on such Payment
Date if interest for such Payment Date had been calculated pursuant to clause (a) of the definition
of Class A Note Rate over the amount of interest calculated at the Maximum Rate.

          “LIBOR Interest Carryover Shortfall” shall mean, with respect to any Payment Date and the
Class A Notes, the amount of any LIBOR Interest Carryover Amounts for prior Payment Dates that
remain unpaid, plus accrued interest thereon at the Class A Note Rate.

          “Maximum Insured Amount” shall mean $500,000,000 in respect of principal, plus interest
thereon calculated at the Class A Note Rate.

          “Nonpayment” shall mean, with respect to any Payment Date, an Insured Amount is Due for
Payment but has not been paid pursuant to the Indenture.

          “Notice” shall mean the telephonic or telegraphic notice, promptly confirmed in writing by
telecopy substantially in the form of Exhibit A to the Policy, the original of which is
subsequently delivered by registered or certified mail, from the Indenture Trustee specifying the
Insured Amount or Preference Amount which shall be due and owing on the applicable Payment Date.

          “Payment Account” shall mean the account created and maintained with the Indenture Trustee for
the benefit of the Holders and the Insurer pursuant to Section 5.05 of the Sale and Servicing
Agreement.

3

 

          “Payment Date” shall mean the 27th day of each month (or if such day is not a Business Day the
next Business Day immediately following) beginning with the First Payment Date.

          “Policy” shall mean the Certificate Guaranty Insurance Policy No. AB0851BE together with each
and every endorsement hereto.

          “Preference Amount” shall mean any payment of principal or interest previously distributed to
a Holder on a Class A Note, which would have been covered under the Policy as an Insured Amount,
which has been deemed a preferential transfer and was previously recovered from its owner pursuant
to the United States Bankruptcy Code in accordance with a final, non-appealable order a court of
competent jurisdiction.

          “Reimbursement Amount” shall mean, as to any Payment Date, the sum of (x) (i) all Insured
Payments paid by the Insurer, but for which the Insurer has not been reimbursed prior to such
Payment Date pursuant to Section 5.01(a)(I)(vii) of the Sale and Servicing Agreement, plus (ii)
interest accrued on such Insured Payments not previously repaid, calculated at the Late Payment
Rate from the date the Indenture Trustee received the related Insured Payments, and (y) without
duplication (i) any amounts then due and owing to the Insurer under the Insurance Agreement, as
certified to the Indenture Trustee by the Insurer plus (ii) interest on such amounts at the Late
Payment Rate.

          “Relief Act Shortfalls” shall mean interest shortfalls resulting from the application of the
Servicemembers Relief Act, as amended, or any similar state law.

          “Sale and Servicing Agreement” shall mean the Sale and Servicing Agreement by and among
IndyMac ABS, Inc., as Depositor, IndyMac Bank, F.S.B., as Seller and Servicer, IndyMac Residential
Asset-Backed Trust, Series 2004-LH1, as Issuer and Deutsche Bank National Trust Company, as
Indenture Trustee, dated as of December 22, 2004.

          “Trustee” shall mean, for purposes of the Policy, the Indenture Trustee.

          Capitalized terms used herein as defined terms and not otherwise defined herein shall have the
meaning assigned to them in the Insurance Agreement and the Agreements, without regard to any
amendment or modification thereof, unless such amendment or modification has been approved in
writing by the Insurer.

          Notwithstanding any other provision of the Policy, the Insurer will pay any Insured Amount
payable hereunder no later than 12:00 noon, New York City time, on the later of (i) the Payment
Date on which the related Insured Amount is Due for Payment and (ii) the second Business Day
following receipt in New York, New York on a Business Day by the Insurer of a Notice at the address
and in the manner provided in Section 6.02 of the Insurance Agreement; provided that, if such
Notice is received after 12:00 noon, New York City time, on such Business Day, it shall be deemed
to be received on the following Business Day. If any such Notice is not in proper form or is
otherwise insufficient for the purpose of making a claim under the Policy, it shall be deemed not
to have been received for purposes of this paragraph, and the Insurer shall

4

 

promptly so advise the Indenture Trustee and the Indenture Trustee may submit an amended or
corrected Notice.

          If such an amended or corrected Notice is in proper form and is otherwise sufficient for the
purpose of making a claim under the Policy, it will be deemed to have been timely received on the
business day of such resubmission, provided, that if such Notice is received after 12:00 noon, New
York City time, on such business day, it will be deemed to be received before 12:00 noon on the
following business day.

          The Insurer’s obligations under the Policy with respect to Insured Amounts will be discharged
to the extent funds are transferred to the Indenture Trustee as provided in the Policy, whether or
not the funds are properly applied by the Indenture Trustee.

          The Insurer will pay any Preference Amount when due to be paid pursuant to the Order (as
defined below), but in any event no earlier than the third Business Day following receipt by the
Insurer of (i) a certified copy of a final, non-appealable order of a court or other body
exercising jurisdiction in such insolvency proceeding to the effect that the Indenture Trustee, or
Holder, as applicable, is required to return such Preference Amount paid during the term of the
Policy because such payments were avoided as a preferential transfer or otherwise rescinded or
required to be restored by the Indenture Trustee and/or Holder, as applicable (the “Order”), (ii)
an opinion of counsel satisfactory to the Insurer, stating that such Order has been entered and is
final and not subject to any stay, (iii) an assignment, in form and substance satisfactory to the
Insurer, duly executed and delivered by the Indenture Trustee or Holder, irrevocably assigning to
the Insurer all rights and claims of the Indenture Trustee and/or such Holder relating to or
arising under the Indenture and the Sale and Servicing Agreement against the estate of the
Indenture Trustee or otherwise with respect to such Preference Amount, (iv) appropriate instruments
in form satisfactory to the Insurer to effect the appointment of the Insurer as agent for the
Indenture Trustee and such Holder in any legal proceeding relating to such Preference Amount and
(v) a Notice (in the form attached hereto as Exhibit A) appropriately completed and executed by the
Indenture Trustee; provided, that if such documents are received after 12:00 noon, New York City
time, on such Business Day, they will be deemed to be received on the following Business Day;
provided, further, that the Insurer shall not be obligated to make any payment in respect of any
Preference Amount representing a payment of principal on the Class A Notes prior to the time the
Insurer would have been required to make a payment in respect of such principal pursuant to the
first paragraph of the face of the Policy; provided, further, that any Preference Amount that
constitutes interest will be limited to the amount of interest on the outstanding principal amount
of the Class A Notes (calculated at the Class A Note Rate) accrued as of the last day of the
applicable interest accrual period and will not, in any event, include any interest on the Class A
Notes accrued after such date or any interest on such interest amount. Such payment shall be
disbursed to the receiver, conservator, debtor-in-possession or trustee in bankruptcy named in the
Order, and not to the Holder directly, unless the Holder has made a payment of the Preference
Amount to the court or such receiver, conservator, debtor-in-possession or trustee in bankruptcy
named in the Order, in which case the Insurer will pay the Holder, subject to the delivery of (a)
the items referred to in clauses (i), (ii), (iii), (iv) and (v) above to the Insurer and (b)

5

 

evidence satisfactory to the Insurer that payment has been made to such court or receiver,
conservator, debtor-in-possession or trustee in bankruptcy named in the Order.

          Upon any payment under the Policy, in furtherance and not in limitation of the Insurer’s
equitable right of subrogation and the Insurer’s rights under the Insurance Agreement, the Insurer
will, to the extent of such payment by the Insurer under the Policy, be subrogated to the rights of
any Class A Noteholder, to receive any and all amounts due in respect of such Class A Notes as to
which such payment under the Policy was made, to the extent of any payment by the Insurer under the
Policy.

          The Insurer hereby agrees that if it shall be subrogated to the rights of Holders by virtue of
any payment under the Policy, no recovery of such payment will occur unless the full amount of the
Holders’ allocable distributions for such Payment Date can be made. In so doing, the Insurer does
not waive its rights to seek full payment of all Reimbursement Amounts owed to it under the
Insurance Agreement and the Agreements.

          The Policy does not cover LIBOR Interest Carryover Amounts, LIBOR Interest Carryover
Shortfalls, Relief Act Shortfalls, default interest or Prepayment Interest Shortfalls, shortfalls
in interest due to prepayments in full made on the HELOCs, premiums, if any payable in respect of
the Class A Notes, nor does the Policy guarantee to the Holders any particular rate of principal
payment. The Policy does not cover the payment of any amounts in connection with a failed auction
of the Class A Notes (other than the amounts set forth in clauses (x) and (y) in the definition of
“Deficiency Amount”). In addition, the Policy does not cover shortfalls, if any, attributable to
the liability of the Issuer, the Indenture Trustee or any Holder for withholding taxes, if any,
(including interest and penalties in respect of any liability for withholding taxes) or any risk
other than Nonpayment, including the failure of the Indenture Trustee or any Paying Agent to make
any payment required under the Indenture to the Holders.

          The terms and provisions of the Indenture constitute the instrument of assignment referred to
in the second paragraph of the face of the Policy.

          A premium will be payable on the Policy on each Payment Date as provided in Section 3.02 of
the Insurance Agreement, beginning with the First Payment Date, in an amount equal to the Premium
Amount. The premium on the Policy is not refundable for any reason, including the payment of any
Class A Notes prior to their maturities.

          IN THE EVENT THAT AMBAC ASSURANCE CORPORATION WERE TO BECOME INSOLVENT, ANY CLAIMS ARISING
UNDER THE POLICY WOULD BE EXCLUDED FROM COVERAGE BY THE CALIFORNIA INSURANCE GUARANTY ASSOCIATION.

          The Policy to which this endorsement is attached and of which it forms a part is hereby
amended to provide that there shall be no acceleration payment due under the Policy unless such
acceleration is at the sole option of the Insurer.

6

 

          Nothing herein contained shall be held to vary, alter, waive or extend any of the terms,
conditions, provisions, agreements or limitations of the above mentioned Policy other than as above
stated.

          To the extent the provisions of this endorsement conflict with the provisions in the
above-mentioned Policy, the provisions of this endorsement shall govern.

          The Policy and the obligations of the Insurer thereunder will terminate without any action on
the part of the Insurer or any other person on the date that is one year and one day following the
earlier to occur of (i) the date on which all amounts required to be paid on the Class A Notes have
been paid in full and (ii) if any proceedings requisite to avoidance as a Preference Payment have
been commenced on or prior to the date specified in clause (i) above, the 30th day after the entry
of a final and nonappealable order in resolution or settlement of each such proceeding. Upon
termination of the Policy, the Indenture Trustee shall deliver the original of the Policy to the
Insurer.

          No person other than the Indenture Trustee shall be entitled to present the Notice.

          No waiver of any rights or powers of the Insurer, the Holders or the Indenture Trustee or
consent by any of them shall be valid unless signed by an authorized officer or agent thereof.

          The Policy is issued under and pursuant to, and shall be construed in accordance with, the
laws of the State of California, without giving effect to the conflict of laws principles thereof.

7

 

          IN WITNESS WHEREOF, Ambac Assurance Corporation has caused this endorsement to the Policy to
be signed by its duly authorized officers.

	 	 	 
	/s/ Patricia LoCascio

	 	/s/ Patrick McCormick
	

	 	

	Assistant Secretary

	 	First Vice President

8

 

EXHIBIT A

TO THE CERTIFICATE GUARANTY INSURANCE POLICY

Policy No. AB0851BE

 

NOTICE OF NONPAYMENT AND DEMAND

FOR PAYMENT OF INSURED AMOUNTS

Date: [                    ]

Ambac Assurance Corporation

One State Street Plaza

New York, New York 10004

Attention: General Counsel

                    Reference is made to Certificate Guaranty Insurance Policy No. AB0851BE (the “Policy”) issued
by Ambac Assurance Corporation (“Ambac”). Terms capitalized herein and not otherwise defined shall
have the meanings specified in the Policy and the Indenture, dated as of December 22, 2004, between
IndyMac Residential Asset-Backed Trust, Series 2004-LH1, as Issuer and Deutsche Bank National Trust
Company, as Indenture Trustee, as the case may be, unless the context otherwise requires.

                    The Indenture Trustee hereby certifies as follows:

	 	1.  	The Indenture Trustee is the Indenture Trustee under the Indenture for the
Holders.
	 
	 	2.  	The relevant Payment Date is [date].
	 
	 	3.  	Payment on the Class A Notes in respect of the Payment Date is due to be
received on                                                              under the Indenture in an amount equal to
$                    .
	 
	 	4.  	There is an [Insured Amount] [Preference Amount] of $                                         in
respect of the Class A Notes, which amount is Due for Payment pursuant to the terms of
the Indenture.
	 
	 	5.  	The Indenture Trustee has not heretofore made a demand for the Insured Amount
in respect of the Payment Date.
	 
	 	6.  	The Indenture Trustee hereby requests the payment of the [Insured Amount]
[Preference Amount] that is Due For Payment be made by Ambac under the Policy and
directs that payment under the Policy be made to the following account by bank wire
transfer of federal or other immediately available funds in accordance with the terms
of the Policy to:

A-1

 

	 	   	                                                             (Indenture Trustee’s account number).
	 
	 	7.  	The Indenture Trustee hereby agrees that, following receipt of the [Insured
Amount] [Preference Amount] from Ambac, it shall (a) hold such amounts in trust and
apply the same directly to the distribution of payment on the Class A Notes when due;
(b) not apply such funds for any other purpose; (c) deposit such funds to the Payment
Account and not commingle such funds with other funds held by Indenture Trustee and
(d) maintain an accurate record of such payments with respect to each certificate and
the corresponding claim on the Policy and proceeds thereof.

                    FOR YOUR PROTECTION CALIFORNIA LAW REQUIRES THE FOLLOWING TO APPEAR ON THIS FORM. ANY PERSON
WHO KNOWINGLY PRESENTS A FALSE OR FRAUDULENT CLAIM FOR THE PAYMENT OF A LOSS IS GUILTY OF A CRIME
AND MAY BE SUBJECT TO FINES AND CONFINEMENT IN STATE PRISON.

	 	 	 	 	 
	 

	 	By:	 	 
	

	 	 	 	

	

	 	 	 	Indenture Trustee
	 
	 	 	 	 
	

	 	Title:	 	 
	

	 	 	 	

	

	 	 	 	(Officer)

A-2

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