FIFTEENTH SUPPLEMENTAL INDENTURE

THIS FIFTEENTH SUPPLEMENTAL INDENTURE dated as of June 10, 2009, is among Enterprise Products Operating LLC, a Texas limited liability company (the “Issuer”), Enterprise Products Partners L.P., a Delaware limited partnership (the “Parent Guarantor”), and Wells Fargo Bank, National Association, a national banking association, as trustee (the “Trustee”).  Each capitalized term used but not defined in this Fifteenth Supplemental Indenture shall have the meaning assigned to such term in the Original Indenture (as defined below).

WHEREAS, Enterprise Products Operating L.P. and the Parent Guarantor have executed and delivered to the Trustee an Indenture, dated as of October 4, 2004 (the “Original Indenture”), providing for the issuance by Enterprise Products Operating L.P. from time to time of its debentures, notes, bonds or other evidences of indebtedness, issued and to be issued in one or more series unlimited as to principal amount (the “Debt Securities”), and the guarantee by each Guarantor of the Debt Securities (the “Guarantee”);

WHEREAS, the Issuer and the Parent Guarantor have executed and delivered to the Trustee a Tenth Supplemental Indenture, dated as of June 30, 2007, providing for the Issuer as the successor issuer (the Original Indenture together with the Tenth Supplemental Indenture, the “Base Indenture”);

WHEREAS, on or before the date hereof the Issuer has issued several series of Debt Securities pursuant to previous supplements to the Base Indenture;

WHEREAS, the Issuer has duly authorized and desires to cause to be issued pursuant to the Base Indenture and this Fifteenth Supplemental Indenture a new series of Debt Securities designated the “4.60% Senior Notes due 2012” (the “Notes”), all of such Notes to be guaranteed by the Parent Guarantor as provided in Article XIV of the Original Indenture;

WHEREAS, the Issuer desires to cause the issuance of the Notes pursuant to Sections 2.01   and 2.03 of the Original Indenture, which sections permit the execution of indentures supplemental thereto to establish the form and terms of Debt Securities of any series;

WHEREAS, pursuant to Section 9.01 of the Original Indenture, the Issuer and the Parent Guarantor have requested that the Trustee join in the execution of this Fifteenth Supplemental Indenture to establish the form and terms of the Notes;

WHEREAS, all things necessary have been done to make the Notes, when executed by the Issuer and authenticated and delivered hereunder and under the Base Indenture and duly issued by the Issuer, and the Guarantee of the Parent Guarantor, when the Notes are duly issued by the Issuer, the valid obligations of the Issuer and the Parent Guarantor, respectively, and to make this Fifteenth Supplemental Indenture a valid agreement of the Issuer and the Parent Guarantor enforceable in accordance with its terms.

NOW, THEREFORE, the Issuer, the Parent Guarantor and the Trustee hereby agree that the following provisions shall supplement the Base Indenture:

SECTION 1.1   Form .

The Notes and the Trustee’s certificate of authentication shall be substantially in the form of Exhibit A to this Fifteenth Supplemental Indenture, which is hereby incorporated into this Fifteenth Supplemental Indenture.  The terms and provisions contained in the Notes shall constitute, and are hereby expressly made, a part of this Fifteenth Supplemental Indenture and to the extent applicable, the Issuer, the Parent Guarantor and the Trustee, by their execution and delivery of this Fifteenth Supplemental Indenture, expressly agree to such terms and provisions and to be bound thereby.

The Notes shall be issued only as Registered Securities.  The Notes shall be issued upon original issuance in whole in the form of one or more Global Securities (the “Book-Entry Notes”).  Each Book-Entry Note shall represent such of the Outstanding Notes as shall be specified therein and shall provide that it shall represent the aggregate amount of Outstanding Notes from time to time endorsed thereon and that the aggregate amount of Outstanding Notes represented thereby may from time to time be reduced or increased, as appropriate, to reflect exchanges and redemptions.  Any endorsement of a Book-Entry Note to reflect the amount, or any increase or decrease in the amount, of Outstanding Notes represented thereby shall be made by the Trustee in accordance with written instructions or such other written form of instructions as is customary for the Depositary, from the Depositary or its nominee on behalf of any Person having a beneficial interest in the Book-Entry Note.

The Issuer initially appoints The Depository Trust Company (“DTC”) to act as Depositary with respect to the Book-Entry Notes.

The Notes shall be entitled the “4.60% Senior Notes due 2012.” The Trustee shall authenticate and deliver (i) the Notes for original issue on the date hereof (the “Original Notes”) in the aggregate principal amount of $500 million and (ii) additional Notes for original issue from time to time after the date hereof in such principal amounts as may be specified in the Company Order described in this sentence, provided that no such additional Notes may be issued at a price that would cause such Notes to have “original issue discount” within the meaning of the Internal Revenue Code of 1986, as amended, in each case upon a Company Order for the authentication and delivery thereof and satisfaction of the other provisions of Section 2.05 of the Original Indenture.  Such order shall specify the amount of the Notes to be authenticated, the date on which the original issue of Notes is to be authenticated, and the name or names of the initial Holder or Holders.  The aggregate principal amount of Notes that may be outstanding at any time may not exceed $500 million plus such additional principal amounts as may be issued and authenticated pursuant to clause (ii) of this paragraph (except as provided in Section 2.09 of the Original Indenture).

The principal amount of each Note shall be payable on August 1, 2012.  Each Note shall bear interest from the date of original issuance, or the most recent date to which interest has been

paid, at the fixed rate of 4.60% per annum.  The dates on which interest on the Notes shall be payable shall be February 1 and August 1 of each year, commencing February 1, 2010 in the case of the Original Notes (the “Interest Payment Dates”).  The regular record date for interest payable on the Notes on any Interest Payment Date shall be January 15 or July 15 (the “Regular Record Date”), as the case may be, next preceding such Interest Payment Date.

Payments of principal of, premium, if any, and interest due on the Notes representing Book-Entry Notes on any Interest Payment Date or at maturity will be made available to the Trustee by 11:00 a.m., New York City time, on such date, unless such date falls on a day which is not a Business Day, in which case such payments will be made available to the Trustee by 11:00 a.m., New York City time, on the next Business Day.  As soon as possible thereafter, the Trustee will make such payments to the Depositary.

The Issuer initially appoints the Trustee as Registrar and paying agent with respect to the Notes.  The office or agency in the City and State of New York where Notes may be presented for registration of transfer or exchange and the Place of Payment for the Notes shall initially be Wells Fargo Corporate Trust, c/o DTC, 1st Floor, TADS Department, 55 Water Street, New York, New York 10041.

In accordance with Article XIV of the Original Indenture, the Notes will be fully, unconditionally and absolutely guaranteed on an unsecured, unsubordinated basis by the Parent Guarantor.  Initially, there will be no Subsidiary Guarantors.

The Notes shall be subject to satisfaction and discharge and to both legal defeasance and covenant defeasance as contemplated by Article XI of the Original Indenture.

The last paragraph of Section 4.12 of the Original Indenture is hereby amended and restated in relation solely to the Notes to read as follows:

“Notwithstanding the foregoing provisions of this Section, the Parent Guarantor may, and may permit any Subsidiary to, effect any Sale/Leaseback Transaction that is not excepted by clauses (a) through (d), inclusive, of this Section, provided that the Attributable Indebtedness from such Sale/Leaseback Transaction, together with the aggregate principal amount of all other such Attributable Indebtedness deemed to be outstanding and all outstanding Indebtedness (other

than the Debt Securities) secured by liens, other than Permitted Liens, upon Principal Properties or upon any capital stock of any Restricted Subsidiary, do not exceed 10% of Consolidated Net Tangible Assets.”

The last sentence of Section 4.13 of the Original Indenture is hereby amended and restated in relation solely to the Notes to read as follows:

“Notwithstanding the foregoing, the Parent Guarantor may, and may permit any Subsidiary to, create, assume, incur or suffer to exist any lien, other than a Permitted Lien, upon any Principal Property or upon any capital stock of any Restricted Subsidiary to secure Indebtedness of the Parent Guarantor, the Company or any other Person (other than the Debt Securities), without in any such case making effective provision whereby all the Debt Securities Outstanding under this Indenture are secured equally and ratably with, or prior to, such Indebtedness so long as such Indebtedness is secured; provided that the aggregate principal amount of all Indebtedness then outstanding secured by such lien and all similar liens, together with the aggregate amount of Attributable Indebtedness deemed to be outstanding in respect of all Sale/Leaseback Transactions (exclusive of any such Sale/Leaseback Transactions otherwise permitted under clauses (a) through (d) of Section 4.12), does not exceed 10% of Consolidated Net Tangible Assets.”

The Issuer shall have no obligation to redeem, purchase or repay the Notes pursuant to any mandatory redemption, sinking fund or analogous provisions or at the option of a Holder thereof.  The Issuer, at its option, may redeem the Notes in accordance with the provisions of paragraph 5 of the Notes and Article III of the Original Indenture.

The table of contents and headings of the Articles and Sections of this Fifteenth Supplemental Indenture have been inserted for convenience of reference only, are not to be considered a part hereof and shall in no way modify or restrict any of the terms or provisions hereof.

The parties may sign any number of copies of this Fifteenth Supplemental Indenture.  Each signed copy shall be an original, but all of them together represent the same agreement.

THIS FIFTEENTH SUPPLEMENTAL INDENTURE AND THE NOTES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

IN WITNESS WHEREOF, the parties hereto have caused this Fifteenth Supplemental Indenture to be duly executed as of the day and year first above written.

[ UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (“DTC”) (55 WATER STREET, NEW YORK, NEW YORK 10041) TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS MAY BE REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR SUCH OTHER ENTITY AS MAY BE 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. ]*

[ TRANSFERS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR’S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS SET FORTH IN THE INDENTURE REFERRED TO HEREIN. ]*

No. _____

ENTERPRISE PRODUCTS OPERATING LLC, a Texas limited liability company (the “Company,” which term includes any successor under the Indenture hereinafter referred to), for value received, hereby promises to pay to [ Cede & Co. ]* or its registered assigns, the principal sum of __________________ ($__________ U.S. dollars, [ or such greater or lesser principal sum as is shown on the attached Schedule of Increases and Decreases in Global Security ]* , on August 1, 2012 in such coin and currency of the United States of America as at the time of payment shall be legal tender for the payment of public and private debts, and to pay interest at an annual rate of 4.60% payabl