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Filing Details

Accession Number:: 0001209191-10-011066
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2010-02-22 12:00:00
Reporting Period:: 2010-02-18

Filing Date:: 2010-02-22
Accepted Time:: 2010-02-22 15:39:53
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1379378	Duncan Energy Partners L.p.	DEP	Natural Gas Transmission (4922)	205639997

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1079482	L Dan Duncan	1100 Louisiana Street Suite 1000 Houston TX 77002	Chairman	Yes	Yes	Yes	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Units Representing Limited Partnership Interests	Acquisiton	2010-02-18	48,891	$25.02	48,891	No	4	P	Indirect	By spouse

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	By spouse

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Units Representing Limited Partnership Interests	33,783,587	Indirect	By GTM
Common Units Representing Limited Partnership Interests	103,100	Indirect	By DD Securities
Common Units Representing Limited Partnership Interests	99,453	Indirect	By EPCO Holdings
Common Units Representing Limited Partnership Interests	382,500	Direct

Footnotes

These common units are owned by Jan Duncan, Mr. Duncan's spouse, and were acquired in a private transaction. Mr. Duncan disclaims beneficial ownership of these units other than to the extent of his pecuniary interest.
These common units are owned directly by Enterprise GTM Holdings LP ("GTM"). Enterprise Products Operating LLC ("EPO") owns a 99% limited partner interest in GTM and Enterprise GTMGP, LLC ("GTMGP") owns a 1% general partner interest. GTMGP is a wholly-owned subsidiary of Enterprise Products GTM, LLC, which is a wholly-owned subsidiary of EPO. EPO is an indirect wholly-owned subsidiary of Enterprise Products Partners LP ("EPD") . The general partner of EPD is Enterprise Products GP, LLC ("EPD GP"), which is a wholly owned subsidiary of Enterprise GP Holdings LP ("EPE"). EPD GP owns a 2% general partner interest and related incentive distribution rights in EPD, and EPE owns approximately 3% of the outstanding common units of EPD as of February 22, 2010 . The general partner of EPE is EPE Holdings, LLC ("EPE GP"), which is wholly-owned by Dan Duncan LLC ("Duncan LLC"). Mr. Duncan, Duncan LLC and other affiliates of Mr. Duncan also collectively own approximately 78% of the
(continued from footnote 2) outstanding units of EPE as of February 22, 2010. Mr. Duncan disclaims beneficial ownership of the DEP common units owned directly by GTM other than to the extent of his pecuniary interest.
These common units are owned directly by DD Securities LLC ("DD Securities"). Mr. Duncan is the sole member of DD Securities.
These common units are owned directly by EPCO Holdings, Inc. ("EPCO Holdings"), an indirect, wholly-owned subsidiary of Enterprise Products Company, formerly named EPCO, Inc. ("EPCO"). Mr. Duncan owns 50.427% of the voting stock of EPCO. Accordingly, Mr. Duncan may be deemed to beneficially own the DEP common units owned directly by EPCO Holdings. Mr. Duncan disclaims beneficial ownership of the DEP common units owned directly by EPCO Holdings other than to the extent of his pecuniary interest.
The power of attorney under which this form was signed is attached.