FIRST AMENDMENT TO AGREEMENT OF LIMITED PARTNERSHIP OF ENTERPRISE UNIT L.P. Dated as of December 2, 2009

EXHIBIT 10.4

FIRST AMENDMENT
TO
AGREEMENT OF LIMITED PARTNERSHIP
OF
ENTERPRISE UNIT L.P.

Dated as of December 2, 2009

     This First Amendment (this “Amendment”) to the Agreement of Limited Partnership dated as of February 20, 2008 (as subsequently amended, the “Partnership Agreement”) of Enterprise Unit L.P., a Delaware limited partnership (the “Partnership”), is made and entered into effective as of December 2, 2009, pursuant to the terms of the Partnership Agreement and in accordance with Section 12.05 thereof.

     Section 1. AMENDMENTS.

          (a) Section 11.01. Paragraph (b) of Section 11.01 of the Partnership Agreement is hereby amended and restated to read as follows:

     (b) unless otherwise agreed to by the General Partner, the Class A Limited Partner and a Required Interest, the date that falls on the second trading day immediately following the first date as of which the distributions with respect to all outstanding EPD Units and EPE Units held by the Partnership relating to the fourth quarter of fiscal year 2015 have been paid in full by EPD or EPE, as applicable;

     Section 2. RATIFICATION OF PARTNERSHIP AGREEMENT. Except as expressly modified and amended herein, all of the terms and conditions of the Partnership Agreement shall remain in full force and effect.

     Section 3. GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE, EXCLUDING ANY CONFLICTS-OF-LAW RULE OR PRINCIPLE THAT MIGHT REFER THE GOVERNANCE OR CONTRUCTION OF THIS AGREEMENT TO THE LAWS OF ANOTHER JURISDICTION.

(Signature Page Follows)

     IN WITNESS WHEREOF, the undersigned have executed this Agreement as of the date first set forth above.

GENERAL PARTNER:		EPCO, INC.
		By:		/s/ W. Xxxxxxx Xxxxxx W. Xxxxxxx Xxxxxx
				President and Chief Executive Officer
CLASS A LIMITED PARTNER:		EPCO HOLDINGS, INC.
		By:		/s/ W. Xxxxxxx Xxxxxx W. Xxxxxxx Xxxxxx
				President and Chief Executive Officer
CLASS B LIMITED PARTNERS:		Representing a majority of Class B Limited Partners of the Partnership, pursuant to Powers of Attorney executed in favor of, and granted and delivered to the General Partner
		By:		EPCO, INC.
				(As attorney-in-fact for the Class B Limited Partners pursuant to powers of attorney)
		By:		/s/ W. Xxxxxxx Xxxxxx W. Xxxxxxx Xxxxxx
				President and Chief Executive Officer

First Amendment to Agreement of Limited Partnership of Enterprise Unit L.P.