SUPPORT AGREEMENT BY AND AMONG ENTERPRISE PRODUCTS PARTNERS L.P. AND THE DUNCAN UNITHOLDERS DATED AS OF JUNE 28, 2009

Exhibit 10.1

Execution Copy

SUPPORT AGREEMENT

BY AND AMONG

ENTERPRISE PRODUCTS PARTNERS L.P.

AND

THE ▇▇▇▇▇▇ UNITHOLDERS

DATED AS OF JUNE 28, 2009

SUPPORT AGREEMENT

SUPPORT AGREEMENT, dated as of June 28, 2009 (this “Agreement”), by and among Enterprise Products Partners L.P., a Delaware limited partnership (the “Partnership”), on the one hand, and Enterprise GP Holdings L.P. (“GP Holdings”), DD Securities LLC, DFI GP Holdings, L.P., ▇▇▇▇▇▇ Family Interests, Inc. (“DFI”), ▇▇▇▇▇▇ Family 2000 Trust and ▇▇▇ ▇. ▇▇▇▇▇▇ (collectively, the “Unitholders” and, individually, “Unitholder”).

W I T N E S S E T H:

Whereas, concurrently with the execution of this Agreement, (A) the Partnership, Enterprise Products GP, LLC (the “General Partner”), Enterprise Sub B LLC (“Enterprise Sub B”), TEPPCO Partners, L.P. (“TEPPCO”) and Texas Eastern Products Pipeline Company, LLC (“TEPPCO GP”) are entering into an Agreement and Plan of Merger, dated as of the date hereof (as amended, supplemented, restated or otherwise modified from time to time, the “MLP Merger Agreement”) pursuant to which, among other things, Enterprise Sub B will merge with and into TEPPCO (the “MLP Merger”), with TEPPCO as the surviving entity, and each outstanding limited partner unit of TEPPCO (the “LP Units”) will be converted into the right to receive the merger consideration specified therein, and (B) the Partnership, the General Partner, Enterprise Sub A LLC (“Enterprise Sub A”) and TEPPCO GP are entering into an Agreement and Plan of Merger, dated as of the date hereof (as amended, supplemented, restated or otherwise modified from time to time, the “GP Merger Agreement”, and along with the MLP Merger Agreement, the “Merger Agreements”), pursuant to which Enterprise Sub A will merge with and into TEPPCO GP, with TEPPCO GP as the surviving entity (the “GP Merger”); and

Whereas, as of the date hereof, each Unitholder is the record owner in the aggregate of, and has the right to vote and dispose of, the number of LP Units set forth opposite such Unitholder’s name on Schedule I hereto (the “Existing Units”); and

Whereas, as a material inducement to the Partnership entering into the Merger Agreements, the Partnership has required that the Unitholders agree, and the Unitholders have agreed, to enter into this agreement and abide by the covenants and obligations with respect to the Covered Units (as hereinafter defined), and the Member Interests (as hereinafter defined) owned by GP Holdings, set forth herein; and

Whereas, the MLP Merger Agreement provides that in lieu of the TEPPCO Consideration (as defined therein) in the MLP Merger, DFI will receive 4,520,431 Class B Units of the Partnership (the “Class B Units”) with respect to 3,645,509 LP Units owned by DFI (the “Designated TEPPCO Units”); and

Whereas, DFI desires to consent to the receipt of the Class B Units in lieu of the TEPPCO Consideration in the MLP Merger; and

Now Therefore, in consideration of the foregoing and the mutual representations, warranties, covenants and agreements herein contained, and intending to be legally bound hereby, the parties hereto agree as follows:

ARTICLE 1

GENERAL

1.1 Defined Terms. The following capitalized terms, as used in this Agreement, shall have the meanings set forth below. Capitalized terms used but not otherwise defined herein shall have the meanings ascribed thereto in the MLP Merger Agreement.

“Covered Units” means, with respect to a Unitholder, such Unitholder’s Existing Units, together with any LP Units that such Unitholder acquires of record of on or after the date hereof.

“Exchange Act” means the Securities and Exchange Act of 1934, as amended.

“Lien” means any mortgage, lien, charge, restriction (including restrictions on transfer), pledge, security interest, option, right of first offer or refusal, preemptive right, put or call option, lease or sublease, claim, right of any third party, covenant, right of way, easement, encroachment or encumbrance.

“Member Interests” mean the membership interests of TEPPCO GP, all of which are owned by GP Holdings.

“Partnership Agreement” means the Fifth Amended and Restated Agreement of Limited Partnership of the Partnership, dated effective as of August 8, 2005, as amended to date.

“Person” means any individual, corporation, limited liability company, limited or general partnership, joint venture, association, joint stock company, trust, unincorporated organization, government or any agency or political subdivision thereof or any other entity, or any group comprised of two or more of the foregoing.

“Transfer” means, directly or indirectly, to sell, transfer, assign or similarly dispose of (by merger (including by conversion into securities or other consideration), by tendering into any tender or exchange offer, by testamentary disposition, by operation of law or otherwise), either voluntarily or involuntarily, or to enter into any contract, option or other arrangement or understanding with respect to the voting of or sale, transfer, assignment or similar disposition of (by merger, by tendering into any tender or exchange offer, by testamentary disposition, by operation of law or otherwise); provided, for purposes of clarification, a Transfer shall not include any existing or future pledges or security interests issued by the Unitholders in connection with a bona fide loan.

ARTICLE 2

VOTING

2.1 Agreement to Vote Covered Units and Member Interests.

(a) Each Unitholder hereby irrevocably and unconditionally agrees that during the term of this Agreement, at any meeting of the unitholders of TEPPCO, however called, including any adjournment or postponement thereof, and in connection with any written consent

of the unitholders of TEPPCO, such Unitholder shall, in each case to the fullest extent that the Covered Units are entitled to vote thereon or consent thereto:

(i) appear at each such meeting or otherwise cause its Covered Units to be counted as present thereat for purposes of calculating a quorum; and

(ii) vote (or cause to be voted), in person or by proxy, or deliver (or cause to be delivered) a written consent covering, all of the Covered Units (i) in favor of the adoption of the MLP Merger Agreement, any transactions contemplated by the MLP Merger Agreement and any other action reasonably requested by the Partnership in furtherance thereof, submitted for the vote or written consent of unitholders; (ii) against any action or agreement that would result in a breach of any covenant, representation or warranty or any other obligation or agreement of TEPPCO or TEPPCO GP or any of their Subsidiaries (as defined in the MLP Merger Agreement) contained in the MLP Merger Agreement; and (iii) against any action, agreement or transaction that would impede, interfere with, delay, postpone, discourage, frustrate the purposes of or adversely affect the MLP Merger or the other transactions contemplated by the MLP Merger Agreement.

(b) GP Holdings hereby acknowledges and agrees that it has executed and delivered a Written Consent of Sole Member approving the GP Merger Agreement concurrent with the execution and delivery of this Agreement. Such Written Consent of Sole Member shall be coupled with an interest and shall be irrevocable, except upon termination of this Agreement.

2.2 No Inconsistent Agreements. Each Unitholder hereby represents, covenants and agrees that, except for this Agreement, such Unitholder (a) has not entered into, and shall not enter into at any time while this Agreement remains in effect, any voting agreement or voting trust with respect to its Covered Units, (b) has not granted, and shall not grant at any time while this Agreement remains in effect, a proxy, consent or power of attorney with respect to its Covered Units (except pursuant to Section 2.3 hereof and powers of attorney granted in connection with secured loans secured by the Covered Units that may be exercised upon the occurrence and during the continuation of an event of default with respect to such loans) and (c) has not taken and shall not knowingly take any action that would make any representation or warranty of such Unitholder contained herein untrue or incorrect or have the effect of preventing or disabling such Unitholder from performing any of his or its obligations under this Agreement.

2.3 Proxy. In order to secure the obligations set forth herein, the Unitholders hereby irrevocably appoint as his or its proxy and attorney-in-fact, as the case may be, ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇ and ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇, in their respective capacities as officers of the General Partner, and any individual who shall hereafter succeed to any such officer of the General Partner, as the case may be, and any other Person designated in writing by the General Partner (collectively, the “Grantee”), each of them individually, with full power of substitution, to vote or execute written consents with respect to the Covered Units in accordance with Section 2.1 hereof and, in the discretion of the Grantees, with respect to any proposed postponements or adjournments of any meeting of the unitholders of TEPPCO at which any of the matters described in Section 2.1(b) are to be considered. This proxy is coupled with an interest and shall be irrevocable, except upon termination of this Agreement, and each Unitholder will take such further action or execute such other instruments as may be necessary to effectuate the intent of this proxy and hereby

revokes any proxy previously granted by such Unitholder with respect to the Covered Units. The Partnership may terminate this proxy with respect to any Unitholder at any time at its sole election by written notice provided to such Unitholder.

ARTICLE 3

REPRESENTATIONS AND WARRANTIES

3.1 Representations and Warranties of the Unitholders. Each Unitholder (except to the extent otherwise provided herein) hereby severally but not jointly represents and warrants to the Partnership as follows:

(a) Organization; Authorization; Validity of Agreement; Necessary Action. Unitholder has the requisite power and authority and/or capacity to execute and deliver this Agreement, to carry out his or its obligations hereunder and to consummate the transactions contemplated hereby. The execution and delivery by each Unitholder of this Agreement, the performance by him or it of the obligations hereunder and the consummation of the transactions contemplated hereby have been duly and validly authorized by Unitholder and no other actions or proceedings on the part of Unitholder to authorize the execution and delivery of this Agreement, the performance by Unitholder of the obligations hereunder or the consummation of the transactions contemplated hereby are required. This Agreement has been duly executed and delivered by Unitholder and, assuming the due authorization, execution and delivery of this Agreement by the Partnership, constitutes a legal, valid and binding agreement of Unitholder, enforceable against him or it in accordance with its terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar laws of general applicability relating to or affecting creditors’ rights and to general equitable principles.

(b) Ownership.

(i) Unitholder legally owns the Unitholder’s Existing Units, and all of the Covered Units owned by Unitholder from the date hereof through and on the Closing Date will be beneficially or legally owned by Unitholder. Unitholder’s Existing Units are all of the LP Units legally or beneficially owned by Unitholder. Unitholder has and will have at all times through the Closing Date sole voting power (including the right to control such vote as contemplated herein), sole power of disposition, sole power to issue instructions with respect to the matters set forth in Article 2 hereof, and sole power to agree to all of the matters set forth in this Agreement, in each case with respect to all of Unitholder’s Existing Units and with respect to all of the Covered Units owned by Unitholder at all times through the Closing Date.

(ii) GP Holdings hereby represents and warrants that GP Holdings legally owns the Member Interests, and all of the Member Interests owned by GP Holdings from the date hereof through and on the Closing Date will be beneficially or legally owned by GP Holdings.

(c) No Violation. Neither the execution and delivery of this Agreement by Unitholder nor the performance by Unitholder of his or its obligations under this Agreement will (A) result in a violation or breach of or conflict with any provisions of, or constitute a default (or

an event which, with notice or lapse of time or both, would constitute a default) under, or result in the termination, cancellation of, or give rise to a right of purchase under, or accelerate the performance required by, or result in a right of termination or acceleration under, or result in the creation of any Lien upon any of the properties, rights or assets, including but not limited to the Existing Units, owned by Unitholder, or result in being declared void, voidable, or without further binding effect, or otherwise result in a detriment to Unitholder under any of the terms, conditions or provisions of any note, bond, mortgage, indenture, deed of trust, license, contract, lease, agreement or other instrument or obligation of any kind to which Unitholder is a party or by which Unitholder or any of his or its respective properties, rights or assets may be bound, (B) violate any judgments, decrees, injunctions, rulings, awards, settlements, stipulations or orders (collectively, “Orders”) or laws applicable to Unitholder or any of his or its properties, rights or assets or, (C) result in a violation or breach of or conflict with its organizational and governing documents.

(d) Consents and Approvals. No consent, approval, Order or authorization of, or registration, declaration or filing with, any governmental authority is necessary to be obtained or made by Unitholder in connection with Unitholder’s execution, delivery and performance of this Agreement or the consummation by Unitholder of the transactions contemplated hereby, except for any reports under Sections 13(d) and 16 of the Exchange Act as may be required in connection with this Agreement and the transactions contemplated hereby.

(e) Reliance by the Partnership. Each Unitholder understands and acknowledges that the Partnership is entering into the Merger Agreements in reliance upon Unitholder’s execution and delivery of this Agreement and the representations, warranties, covenants and obligations of Unitholder contained herein.

3.2 Representations and Warranties of the Partnership. The Partnership hereby represents and warrants to each Unitholder that the execution and delivery of this Agreement by the Partnership and the consummation of the transactions contemplated hereby have been duly authorized by all necessary action on the part of Enterprise Products GP, LLC, the general partner of the Partnership.

ARTICLE 4

OTHER COVENANTS

4.1 Prohibition on Transfers, Other Actions. Each Unitholder hereby agrees not to (i) Transfer any of the Covered Units, beneficial ownership thereof or any other interest therein; (ii) enter into any agreement, arrangement or understanding, or take any other action, that violates or conflicts with or would reasonably be expected to violate or conflict with, or result in or give rise to a violation of or conflict with, Unitholder’s representations, warranties, covenants and obligations under this Agreement; or (iii) take any action that could restrict or otherwise affect Unitholder’s legal power, authority and right to comply with and perform his or its covenants and obligations under this Agreement; provided, the foregoing shall not include or prohibit Transfers resulting from pledges or security interests (or the foreclosure thereof) relating to existing or future bona fide loans that do not affect Unitholder’s legal power, authority and

right to comply with and perform his or its covenants and obligations under this Agreement. Any Transfer in violation of this provision shall be null and void.

4.2 Further Assurances. From time to time, at the Partnership’s request and without further consideration, each Unitholder shall execute and deliver such additional documents and take all such further action as may be reasonably necessary or advisable to effect the actions and consummate the transactions contemplated by this Agreement.

ARTICLE 5

CONSENT OF ▇▇▇▇▇▇ FAMILY INTERESTS, INC.

DFI hereby agrees and consents to the receipt of the Class B Units in the MLP Merger in lieu of the TEPPCO Consideration with respect to the Designated TEPPCO Units. DFI confirms that it has read and agrees with the provisions of the MLP Merger Agreement related to the Class B Units and the form of Amendment No. 4 to the Partnership Agreement attached as Exhibit B to the MLP Merger Agreement and understands that the Class B Units will not have the right to share in the Partnership’s distributions of Available Cash (as defined in the Partnership Agreement) until the date immediately following the payment date of the 16th distribution on the Common Units (as defined in the Partnership Agreement) following the closing of the transactions contemplated by the MLP Merger Agreement, at which time each Class B Unit will automatically convert into one Common Unit (as defined in the Partnership Agreement).

ARTICLE 6

MISCELLANEOUS

6.1 Termination. This Agreement shall remain in effect until the earliest to occur of (i) the TEPPCO Effective Time (as defined in the MLP Merger Agreement), (ii) the termination of the MLP Merger Agreement in accordance with its terms (including after any extension thereof), and (iii) the written agreement of the Unitholders and the Partnership to terminate this Agreement. After the occurrence of such applicable event, this Agreement shall terminate and be of no further force or effect. Nothing in this Section 6.1 and no termination of this Agreement shall relieve or otherwise limit any party of liability for any breach of this Agreement occurring prior to such termination.

6.2 No Ownership Interest. Nothing contained in this Agreement shall be deemed to vest in the Partnership any direct or indirect ownership or incidence of ownership of or with respect to any Covered Units. All rights, ownership and economic benefit relating to the Covered Units shall remain vested in and belong to each Unitholder, and the Partnership shall have no authority to direct such Unitholder in the voting or disposition of any of the Covered Units, except as otherwise provided herein.

6.3 Publicity. Each Unitholder hereby permits the Partnership and TEPPCO to include and disclose in the Proxy Statement/Prospectus and in such other schedules, certificates, applications, agreements or documents as such entities reasonably determine to be necessary or appropriate in connection with the consummation of the TEPPCO Merger and the transactions contemplated by the MLP Merger Agreement such Unitholder’s identity and ownership of the

Covered Units and the nature of such Unitholder’s commitments, arrangements and understandings pursuant to this Agreement.

6.4 Notices. All notices and other communications hereunder shall be in writing and shall be deemed given when delivered personally or by telecopy (upon telephonic confirmation of receipt) or on the first Business Day following the date of dispatch if delivered by a recognized next day courier service. All notices hereunder shall be delivered as set forth below or pursuant to such other instructions as may be designated in writing by the party to receive such notice:

If to the Partnership, to:

Enterprise Products Partners L.P.
▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇
▇▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇
Attention: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇

With copies to:

▇▇▇▇▇▇▇ ▇▇▇▇▇ LLP
▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇
▇▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇
Attention: ▇▇▇▇▇ ▇. ▇▇▇▇, Esq.

If to the Unitholders, to:

EPCO, Inc.
▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇
▇▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇
Attention: President and Chief Executive Officer

With copies to:

EPCO, Inc.
▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇
▇▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇
Attention: Chief Legal Officer

6.5 Interpretation. The words “hereof,” “herein” and “hereunder” and words of similar import when used in this Agreement shall refer to this Agreement as a whole and not to any particular provision of this Agreement, and Section references are to this Agreement unless otherwise specified. Whenever the words “include,” “includes” or “including” are used in this Agreement, they shall be deemed to be followed by the words “without limitation.” The meanings given to terms defined herein shall be equally applicable to both the singular and plural forms of such terms. The headings contained in this Agreement are for reference purposes only and shall not affect in any way the meaning or interpretation of this Agreement. This Agreement is the product of negotiation by the parties having the assistance of counsel and other advisers. It

is the intention of the parties that this Agreement not be construed more strictly with regard to one party than with regard to the others.

6.6 Counterparts. This Agreement may be executed by facsimile and in counterparts, all of which shall be considered one and the same agreement and shall become effective when counterparts have been signed by each of the parties and delivered to the other parties, it being understood that all parties need not sign the same counterpart.

6.7 Entire Agreement. This Agreement and, solely to the extent of the defined terms referenced herein, the Merger Agreements, together with the schedule annexed hereto, embody the complete agreement and understanding among the parties hereto with respect to the subject matter hereof and supersede and preempt any prior understandings, agreements or representations by or among the parties, written and oral, that may have related to the subject matter hereof in any way.

6.8 Governing Law; Consent to Jurisdiction; Waiver of Jury Trial.

(a) This Agreement shall be governed by and construed in accordance with the laws of the State of Delaware, regardless of the laws that might otherwise govern under applicable principles of conflicts of laws thereof.

(b) EACH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT AND ANY OF THE AGREEMENTS DELIVERED IN CONNECTION HEREWITH OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY. EACH PARTY CERTIFIES AND ACKNOWLEDGES THAT (A) NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE EITHER OF SUCH WAIVERS, (B) IT UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF SUCH WAIVERS, (C) IT MAKES SUCH WAIVERS VOLUNTARILY, AND (D) IT HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION 6.8.

6.9 Amendment; Waiver. This Agreement may not be amended except by an instrument in writing signed by the Partnership and each Unitholder. Each party may waive any right of such party hereunder by an instrument in writing signed by such party and delivered to the Partnership and the Unitholders.

6.10 Remedies.

(a) Each party hereto acknowledges that monetary damages would not be an adequate remedy in the event that any covenant or agreement in this Agreement is not performed in accordance with its terms, and it is therefore agreed that, in addition to and without limiting any other remedy or right it may have, the non-breaching party will have the right to an injunction, temporary restraining order or other equitable relief in any court of competent jurisdiction enjoining any such breach and enforcing specifically the terms and provisions

hereof. Each party hereto agrees not to oppose the granting of such relief in the event a court determines that such a breach has occurred, and to waive any requirement for the securing or posting of any bond in connection with such remedy.

(b) All rights, powers and remedies provided under this Agreement or otherwise available in respect hereof at law or in equity shall be cumulative and not alternative, and the exercise or beginning of the exercise of any thereof by any party shall not preclude the simultaneous or later exercise of any other such right, power or remedy by such party.

6.11 Severability. Any term or provision of this Agreement which is determined by a court of competent jurisdiction to be invalid or unenforceable in any jurisdiction shall, as to that jurisdiction, be ineffective to the extent of such invalidity or unenforceability without rendering invalid or unenforceable the remaining terms and provisions of this Agreement or affecting the validity or enforceability of any of the terms or provisions of this Agreement in any other jurisdiction, and if any provision of this Agreement is determined to be so broad as to be unenforceable, the provision shall be interpreted to be only so broad as is enforceable, in all cases so long as neither the economic nor legal substance of the transactions contemplated hereby is affected in any manner adverse to any party or its equityholders. Upon any such determination, the parties shall negotiate in good faith in an effort to agree upon a suitable and equitable substitute provision to effect the original intent of the parties as closely as possible and to the end that the transactions contemplated hereby shall be fulfilled to the maximum extent possible.

6.12 Successors and Assigns; Third Party Beneficiaries. Neither this Agreement nor any of the rights or obligations of any party under this Agreement shall be assigned, in whole or in part (by operation of law or otherwise), by any party without the prior written consent of the other parties hereto. Subject to the foregoing, this Agreement shall bind and inure to the benefit of and be enforceable by the parties hereto and their respective successors and permitted assigns. Nothing in this Agreement, express or implied, is intended to confer on any Person other than the parties hereto or the parties’ respective successors and permitted assigns any rights, remedies, obligations or liabilities under or by reason of this Agreement.

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In Witness Whereof, the parties hereto have caused this Agreement to be signed (where applicable, by their respective officers or other authorized Person thereunto duly authorized) as of the date first written above.


		Partnership:

		ENTERPRISE PRODUCTS PARTNERS L.P.

		By: ENTERPRISE PRODUCTS GP, LLC,
		its general partner

		By: Name:		/s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇
		Title:		President and Chief Executive Officer