| Delaware                             | 20-5639997                                                                                                                                                                                                                                       |
|--------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| (State      or Other Jurisdiction of | (I.R.S.      Employer Identification No.)                                                                                                                                                                                                        |
| Incorporation      or Organization)  |                                                                                                                                                                                                                                             |
|                                 | 1100      Louisiana Street, 10th Floor, Houston,      Texas              77002                                                                                             |   |
|                                 |                (Address      of Principal Executive Offices)               (Zip      Code) |   |
|                                 | (713)      381-6500                                                                                                                                                                                                                              |   |
|                                 | (Registrant's      Telephone Number, Including Area Code)                                                                                                                                                                                        |   |

|   |                                      Securities registered      pursuant to Section 12(b) of the Act:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
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|   |  Title of Each      Class                                                                                             Name of Each Exchange      On Which Registered                                                                                                                    |
|   |               Common Units                                                                                                              New York Stock Exchange |

|   |    Large      accelerated filer o                                                               |                         Accelerated filer þ  |
|--------|--------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------|
|   |    Non-accelerated      filer   o      (Do not check if a smaller reporting company)  |  Smaller      reporting company o                                                                                                      |

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DUNCAN ENERGY PARTNERS L.P.

|          |                                                                                  |   | Page   |   |
|---------------|---------------------------------------------------------------------------------------|--------|--------|--------|
|          |                                                                                  |   | Number |   |
| PART I        |                                                                                  |
| Item 1 and 2. | Business and Properties.                                                              |   |   | 3      |   |
| Item 1A.      | Risk Factors.                                                                         |   |   | 23     |   |
| Item 1B.      | Unresolved Staff Comments.                                                            |   |   | 46     |   |
| Item 3.       | Legal Proceedings.                                                                    |   |   | 46     |   |
| Item 4.       | [Reserved]                                                                            |   |   | 47     |   |
|          |                                                                                  |   |   |   |   |
| PART II       |                                                                                  |
| Item 5.       | Market for Registrant’s Common Equity, Related      Unitholder                  |   |   |   |   |
|          |      Matters and Issuer Purchases of Equity      Securities. |   |   | 47     |   |
| Item 6.       | Selected Financial Data.                                                              |   |   | 48     |   |
| Item 7.       | Management’s Discussion and Analysis of Financial Condition      and            |   |   |   |   |
|          |      Results of Operations.                                  |   |   | 49     |   |
| Item 7A.      | Quantitative and Qualitative Disclosures about Market      Risk.                      |   |   | 73     |   |
| Item 8.       | Financial Statements and Supplementary    Data.                                       |   |   | 74     |   |
| Item 9.       | Changes in and Disagreements with Accountants on Accounting      and                  |   |   |   |   |
|          |      Financial Disclosure.                                   |   |   | 74     |   |
| Item 9A.      | Controls and Procedures.                                                              |   |   | 75     |   |
| Item 9B.      | Other Information.                                                                    |   |   | 78     |   |
|          |                                                                                  |   |   |   |   |
| PART III      |                                                                                  |
| Item 10.      | Directors, Executive Officers and Corporate      Governance.                          |   |   | 78     |   |
| Item 11.      | Executive Compensation.                                                               |   |   | 85     |   |
| Item 12.      | Security Ownership of Certain Beneficial Owners and      Management                   |   |   |   |   |
|          |      and Related Unitholder Matters.                         |   |   | 95     |   |
| Item 13.      | Certain Relationships and Related Transactions, and      Director Independence.       |   |   | 97     |   |
| Item 14.      | Principal Accountant Fees and Services.                                               |   |   | 102    |   |
|          |                                                                                  |   |   |   |   |
| PART IV       |                                                                                  |
| Item 15.      | Exhibits and Financial Statement    Schedules.                                        |   |   | 103    |   |
|          |                                                                                  |   |   |   |   |
| Signatures    |                                                                                  |   | 108    |   |
|          |                                                                                  |   |   |   |

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PART I

Item 1 and 2.  Business andProperties.

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| §   | Mont      Belvieu Caverns owns 34 underground salt dome storage caverns located in      Mont Belvieu, Texas, having an NGL and related product storage capacity of      approximately 100 million barrels (“MMBbls”), and a brine system with      approximately 20 MMBbls of above ground storage capacity and two brine      production wells. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Acadian      Gas is engaged in the gathering, transportation, storage and marketing of      natural gas in south Louisiana, utilizing over 1,000 miles of      pipelines having an aggregate throughput capacity of 1.0 billion cubic      feet per day (“Bcf/d”).  Acadian Gas also owns a 49.51% equity      interest in Evangeline, which owns a 27-mile natural gas pipeline located      in southeast Louisiana. |
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| §   | Lou-Tex      Propylene owns a 263-mile pipeline used to transport chemical-grade      propylene from Sorrento, Louisiana to Mont Belvieu,  Texas. |
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| §   | Sabine      Propylene owns a 21-mile pipeline used to transport polymer-grade      propylene from Port Arthur, Texas to a pipeline interconnect in Cameron      Parish, Louisiana. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | South      Texas NGL owns a 297-mile pipeline system used to transport NGLs from our      Shoup and Armstrong NGL fractionation facilities in south Texas to Mont      Belvieu, Texas. |
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| §   | Enterprise      GC operates and owns: (i) two NGL fractionation facilities, Shoup and      Armstrong, located in south Texas; (ii) a 1,020-mile NGL pipeline system      located in south Texas; and (iii) 1,112 miles of natural gas gathering      pipelines located in south and west Texas.  Enterprise GC’s      natural gas gathering pipelines include: (i) the 262-mile Big Thicket      Gathering System located in southeast Texas; (ii) the 660-mile Waha system      located in the Permian Basin of west Texas; and (iii) the 190-mile TPC      Offshore gathering system located in south  Texas. |
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| §   | Enterprise      Intrastate operates and owns an undivided 50% interest in the assets      comprising the 641-mile Channel natural gas pipeline, which extends from      the Agua Dulce Hub in south Texas to Sabine, Texas located on the      Texas/Louisiana border. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Enterprise      Texas owns the 6,560-mile Enterprise Texas natural gas pipeline system,      which includes the Sherman Extension, and leases the Wilson natural gas      storage facility.  The Enterprise Texas system, along with the      Waha, TPC Offshore and Channel pipeline systems, comprise our Texas      Intrastate System. |
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| §   | optimize      the benefits of our economies of scale, strategic location and pipeline      connections serving natural gas, NGL, petrochemical and refining      customers; |
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| §   | manage      our portfolio of midstream energy assets to minimize volatility in our      cash flows; |
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| §   | invest      in organic growth capital projects to capitalize on market opportunities      that expand our asset base and generate additional cash      flow; and |
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| §   | pursue      acquisitions of assets and businesses from related parties, or in      accordance with our business opportunity agreements, from third      parties. |
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| §   | Natural      Gas Pipelines & Services; |
|--------------------|--------------------------------------------|

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| §   | NGL      Pipelines & Services; and |
|--------------------|----------------------------------------|

| §   | Petrochemical      Services. |
|--------------------|------------------------------|

| /d     | =      per day                       |
|--------|--------------------------------------|
| BBtus  | =      billion British thermal units |
| Bcf    | =      billion cubic feet            |
| MBPD   | =      thousand barrels per day      |
| MBbls  | =      thousand barrels              |
| MMBbls | =      million barrels               |
| MMBtus | =      million British thermal units |
| MMcf   | =      million cubic feet            |

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|                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                  |          |                       | Approx.      Net                 |     |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------|---------------|----------------------------|----------------------------------|----------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                  |          |                       | Capacity,                        | Working  |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                  |          |  Length               |  Natural      Gas           | Capacity |
| Description      of Asset                                                                                                                                                                                                                                                                                                                                                                                                                                      | Location                              |  (Miles) |  (MMcf/d)             | (Bcf)                            |
| Natural      gas pipelines:                                                                                                                                                                                                                                                                                                                                                                                                                                    |                                  |          |                       |                             |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Texas      Intrastate System          | Texas         | 8,051                      | 6,640                            |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Acadian      Gas System               | Louisiana     | 1,041                      | 1,149                            |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Big      Thicket Gathering System (1) | Texas         |         262      |           60 |     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Canales      Gathering System         | Texas         |          32 |      75 |     |
|           Total      miles                                                                                                                                                                                                                                                                                                                                                                                   |                                  | 9,386         |                       |                             |
| Natural      gas storage facilities:                                                                                                                                                                                                                                                                                                                                                                                                                           |                                  |          |                       |                             |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Wilson  (2)                 | Texas         |                       |                             | 6.8      |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Acadian      (3)                      | Louisiana     |                       |                             | 1.3      |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Total      gross capacity             |          |                       |                             | 8.1      |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                  |          |                       |                             |     |
| (1)        The      Big Thicket Gathering System is an integral part of our NGL marketing      activities, the results of operations of which are accounted for under our      NGL Pipelines & Services business segment.(2)        This      facility is held under an operating lease that expires in January      2028.(3)        This      facility is held under an operating lease that expires in December      2012. |

| §   | The      Texas Intrastate      System gathers and transports natural gas from supply basins in      Texas (from both onshore and offshore sources) to local gas distribution      companies and electric generation and industrial and municipal consumers      as well as to connections with intrastate and interstate      pipelines.  The Texas Intrastate System is comprised of the      6,560-mile Enterprise Texas pipeline system, the 641-mile Channel pipeline      system, the 660-mile Waha gathering system and the 190-mile TPC Offshore      gathering system.  The Enterprise Texas pipeline system includes      a 263-mile pipeline we lease from an affiliate of ETP.  The      leased Wilson natural gas storage facility, located in Wharton County,      Texas, is an integral part of the Texas Intrastate      System.  Collectively, the Texas Intrastate System serves      important natural gas producing regions and commercial markets in Texas,      including Corpus Christi, the San Antonio/Austin area, the Beaumont/Orange      area and the Houston area, including the Houston Ship Channel industrial      market. |
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| §   | The      Acadian Gas      System purchases, transports, stores and resells natural gas in      Louisiana.  The Acadian Gas System is comprised of the 576-mile      Cypress pipeline, the 438-mile Acadian pipeline and the 27-mile Evangeline      pipeline.  The leased Acadian natural gas storage facility at      Napoleonville, Louisiana is an integral part of the Acadian Gas      System.  The Acadian Gas pipeline system links natural gas      supplies from onshore Gulf Coast and offshore Gulf of Mexico developments      with local gas distribution companies, electric generation plants and      industrial customers, located primarily in the natural gas market area of      the Baton Rouge – New Orleans – Mississippi River  corridor. |
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|                                                                                                                                                                                                                                                                                                                                                                                     |                                       |          |         | Useable                     | Total    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------|---------------|--------------|-----------------------------|----------|
|                                                                                                                                                                                                                                                                                                                                                                                     |                                       |          |         | Storage                     | Plant    |
|                                                                                                                                                                                                                                                                                                                                                                                     |                                       |          |  Length | Capacity                    | Capacity |
| Description      of Asset                                                                                                                                                                                                                                                                                                                                                                | Location                                   |  (Miles) | (MMBbls)     | (MBPD)                      |
| NGL      pipelines:                                                                                                                                                                                                                                                                                                                                                                      |                                       |          |         |                        |
|                                                                                                                                                                                                                                                                                                                                                                                     | South      Texas NGL Pipeline System       | Texas         | 1,317        |                        |     |
| NGL      and petrochemical storage facilities:                                                                                                                                                                                                                                                                                                                                           |                                       |          |         |                        |
|                                                                                                                                                                                                                                                                                                                                                                                     | Mont      Belvieu Storage (34 caverns) (1) | Texas         |         | 103.5                       |     |
|                                                                                                                                                                                                                                                                                                                                                                                     | Almeda      (6 caverns) (1, 2)             | Texas         |         |        13.4            |     |
|                                                                                                                                                                                                                                                                                                                                                                                     | Markham      (2 caverns) (1, 2)            | Texas         |         |          4.3 |     |
|                                                                                                                                                                                                                                                                                                                                                                                     | Total      useable capacity                |          |         | 121.2                       |     |
| NGL      fractionation facilities:                                                                                                                                                                                                                                                                                                                                                       |                                       |          |         |                        |
|                                                                                                                                                                                                                                                                                                                                                                                     | Shoup                                      | Texas         |         |                        | 69       |
|                                                                                                                                                                                                                                                                                                                                                                                     | Armstrong                                  | Texas         |         |                        | 13       |
|                                                                                                                                                                                                                                                                                                                                                                                     | Total      plant capacities                |          |         |                        | 82       |
|                                                                                                                                                                                                                                                                                                                                                                                     |                                       |          |         |                        |     |
| (1)        The      Mont Belvieu storage complex includes above-ground brine pit capacity of      20 MMBbls.  Brine capacity at the Almeda and Markham facilities      is limited to the quantity necessary to support the product storage      operations.(2)        Our      interest in these facilities is held under long-term operating      leases. |

| §   | The      Mont Belvieu      Storage complex consists of three interconnected underground      storage facilities:  Mont Belvieu East, Mont Belvieu West and      Mont Belvieu North.  The Mont Belvieu East facility is the largest of      our three Mont Belvieu storage facilities.  This facility      consists of 14 underground salt dome storage caverns with a storage      capacity of approximately 56 MMBbls and an above-ground brine pit      with a brine capacity of approximately 10 MMBbls.  This      facility also has two brine production wells.  The Mont Belvieu      West facility consists of 10 underground salt dome storage caverns with a      storage capacity of approximately 15 MMBbls and an above-ground brine      pit with a brine capacity of approximately 2 MMBbls.  The      Mont Belvieu North facility consists of 10 underground salt dome storage      caverns with a storage capacity of approximately 30 MMBbls and an      above-ground brine pit with a brine capacity of approximately      8 MMBbls. |
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| §   | The      South Texas NGL Pipeline      System consists of (i) approximately 380 miles of intrastate NGL      transportation pipelines that transport mixed NGLs from various south      Texas natural gas processing facilities (primarily those owned by EPO) to      our Shoup and Armstrong fractionators and (ii) intrastate NGL pipelines      aggregating 937 miles that deliver NGLs from the Shoup and Armstrong      fractionators to our Mont Belvieu storage complex and to other customers      along the upper Texas Gulf Coast.  The leased Markham and Almeda      NGL storage facilities are integral components of the South Texas NGL      System. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | The      Lou-Tex Propylene      Pipeline is a 263-mile pipeline used to transport chemical-grade      propylene from Sorrento, Louisiana to Mont Belvieu,      Texas.  Shell Oil Company (“Shell”) and Exxon Mobil are the only      customers of this pipeline.  The chemical-grade propylene we      transport for Shell originates at its underground storage facility located      in Sorrento, Louisiana and is delivered to various receipt points between      Sorrento, Louisiana and Mont Belvieu, Texas.  The chemical-grade      propylene we transport for Exxon Mobil originates from its refining and      chemical complex located in Baton Rouge, Louisiana and is delivered to      either Exxon Mobil’s customers or to an underground storage well located      in Mont Belvieu, Texas owned by Mont Belvieu  Caverns. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | The      Sabine Propylene      Pipeline consists of a 21-mile pipeline used to transport      polymer-grade propylene from Port Arthur, Texas to a pipeline interconnect      in Cameron Parish, Louisiana.  Shell is the sole customer of      this pipeline.  The polymer-grade propylene transported for      Shell originates from the TOTAL/BASF Port Arthur cracker facility and is      delivered to the Lyondell Basell polypropylene facility in Lake Charles,      Louisiana. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | As      a result of the DEP I drop down transaction, we own a 66% equity interest      in Lou-Tex Propylene and Sabine Propylene.  EPO owns the      remaining equity interests in theseentities. |
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| §   | Shell      Exchange Agreements – Shell is obligated to meet minimum delivery      requirements under the Lou-Tex Propylene and Sabine Propylene      agreements.  If Shell fails to meet such minimum delivery      requirements, it is obligated to pay a deficiency fee to      us.  The term of the Lou-Tex Propylene exchange agreement      expires in March 2020 and the term of the Sabine Propylene exchange      agreement expires in November 2011.  The Lou-Tex exchange      agreement will continue on a year-to-year basis after expiration, subject      to termination by either party.  The fees paid by Shell under      the Lou-Tex Propylene exchange agreement are generally fixed and are      adjusted annually based on the operating costs of the pipeline and the      U.S. Department of Labor wage index.  During 2009, Shell      provided notice of its intent to terminate the Sabine Propylene exchange      agreement in November 2011.  Given the importance of the Sabine      Propylene Pipeline in delivering feedstocks to facilities connected to      this pipeline, we believe that the Sabine Propylene Pipeline will remain      commercially viable after the Shell exchange agreement expires in      2011. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Exxon      Mobil Exchange Agreement – The term of the Lou-Tex Propylene Pipeline      exchange agreement expired in June 2008, but continues on a monthly      basis subject to a two-year termination notice initiated by either      party.  The exchange fees paid by Exxon Mobil are based on the      volume of chemical-grade propylenedelivered. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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Item 1A.  Risk Factors.

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| §   | the      level of domestic production and consumer product  demand; |
|--------------------|---------------------------------------------------------------------|

| §   | the      availability of imported natural gas and actions taken by foreign oil and      natural gas providing nations; |
|--------------------|------------------------------------------------------------------------------------------------------------------------|

| §   | the      availability of transportation systems with adequate    capacity; |
|--------------------|----------------------------------------------------------------------------|

| §   | the      availability of competitive fuels; |
|--------------------|---------------------------------------------|

| §   | fluctuating      and seasonal demand for natural gas andNGLs; |
|--------------------|---------------------------------------------------------------|

| §   | the      impact of conservation efforts; |
|--------------------|------------------------------------------|

| §   | the      extent of governmental regulation and taxation of production;      and |
|--------------------|---------------------------------------------------------------------------------|

| §   | the      overall economic environment. |
|--------------------|----------------------------------------|

| §   | Ethane.  Ethane is      primarily used in the petrochemical industry as feedstock for ethylene,      one of the basic building blocks for a wide range of plastics and other      chemical products.  If natural gas prices increase significantly      in relation to NGL product prices, or if the demand for ethylene falls      (and, therefore, the demand for ethane by NGL producers falls), it may be      more profitable for natural gas producers to leave the ethane in the      natural gas stream to be burned as fuel than to extract the ethane from      the mixed NGL stream for sale as an ethylene  feedstock. |
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| §   | Propane.  The      demand for propane as a heating fuel is significantly affected by weather      conditions.  Unusually warm winters could cause the demand for      propane to decline significantly and could cause a significant decline in      the volumes of propane that wetransport. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Isobutane.  A      reduction in demand for motor gasoline additives may reduce demand for      isobutane.   |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------|

| §   | Propylene.  Propylene      is sold to petrochemical companies for a variety of uses, principally for      the production of polypropylene.  Propylene is subject to rapid      and material price fluctuations.  Any downturn in the domestic      or international economy could cause reduced demand for, and an oversupply      of propylene, which could cause a reduction in the volumes of propylene      that we transport. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | the      level of successful drilling activity near our  pipelines; |
|--------------------|---------------------------------------------------------------------|

| §   | our      ability to compete for thesesupplies; |
|--------------------|------------------------------------------------|

| §   | our      ability to connect our pipelines to the  suppliers; |
|--------------------|--------------------------------------------------------------|

| §   | the      successful completion of new liquefied natural gas (“LNG”) facilities near      our pipelines; and |
|--------------------|-------------------------------------------------------------------------------------------------------------------------|

| §   | our      gas quality requirements. |
|--------------------|------------------------------------|

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| §   | our      ability to obtain additional financing, if necessary, for working capital,      capital expenditures, acquisitions or other purposes may be impaired or      such financing may not be available on favorable  terms; |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | covenants      contained in our existing and future credit and debt arrangements require      us to meet certain financial tests that may affect our flexibility in      planning for and reacting to changes in our business, including possible      acquisition opportunities; |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | we      may need a substantial portion of our cash flow to make principal and      interest payments on our indebtedness, reducing the funds that would      otherwise be available for operation, future business opportunities and      distributions to unitholders; and |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | our      debt level may make us more vulnerable than our competitors with less debt      to competitive pressures or a downturn in our business or the economy      generally. |
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| §   | make      distributions if any default or event of default  occurs; |
|--------------------|---------------------------------------------------------------------|

| §   | incur      additional indebtedness or guarantee other  indebtedness; |
|--------------------|----------------------------------------------------------------------|

| §   | grant      liens or make certain negativepledges; |
|--------------------|---------------------------------------------------|

| §   | make      certain loans or investments; |
|--------------------|-----------------------------------------|

| §   | make      any material change to the nature of our business, including      consolidations, liquidations and dissolutions;  or |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------|

| §   | enter      into a merger, consolidation, sale and leaseback transaction or sale of      assets. |
|--------------------|-------------------------------------------------------------------------------------------------|

| §   | failure      to pay any principal, interest, fees, expenses or other amounts when      due; |
|--------------------|---------------------------------------------------------------------------------------------|

| §   | failure      of any representation or warranty made by us in our credit agreements to      be true and correct in any materialrespect; |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------|

| §   | failure      to perform or otherwise comply with the covenants in the credit      agreements; |
|--------------------|-----------------------------------------------------------------------------------------------|

| §   | failure      to pay any other material debt; |
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| §   | a      bankruptcy or insolvency event involving us, our general partner or any of      our subsidiaries; |
|--------------------|----------------------------------------------------------------------------------------------------------|

| §   | the      entry of, and failure to pay, one or more adverse judgments in excess of a      specified amount against which enforcement proceedings are brought or that      are not stayed pending appeal; |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | a      change in control of us; |
|--------------------|---------------------------------|

| §   | a      judgment default or a default under any material agreement if such default      could have a material adverse effect on us;and |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------|

| §   | the      occurrence of certain events with respect to employee benefit plans      subject to ERISA. |
|--------------------|-----------------------------------------------------------------------------------------------------|

| §   | difficulties      in the assimilation of the operations, technologies, services and products      of the acquired companies or businesssegments; |
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| §   | establishing      the internal controls and procedures that we are required to maintain      under the Sarbanes-Oxley Act of2002; |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------|

| §   | managing      relationships with new joint venture partners with whom we have not      previously partnered; |
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| §   | experiencing      unforeseen operational interruptions or the loss of key employees,      customers, or suppliers; |
|--------------------|--------------------------------------------------------------------------------------------------------------------|

| §   | inefficiencies      and complexities that can arise because of unfamiliarity with new assets      and the businesses associated with them, including with their markets;      and |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | diversion      of the attention of management and other personnel from day-to-day      business to the development or acquisition of new businesses and other      business opportunities. |
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| §   | we      may be unable to complete construction projects on schedule or at the      budgeted cost due to the unavailability of required construction personnel      or materials, accidents, weather conditions or an inability to obtain      necessary permits; |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | we      will not receive any material increases in revenues until the project is      completed, even though we may have expended considerable funds during the      construction phase, which may beprolonged; |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | we      may construct facilities to capture anticipated future growth in      production or demand in a region in which such growth does not      materialize; |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | since      we are not engaged in the exploration for and development of natural gas      reserves, we may not have access to third-party estimates of reserves in      an area prior to our constructing facilities in the area.  As a      result, we may construct facilities in an area where the reserves are      materially lower than weanticipate; |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | where      we do rely on third-party estimates of reserves in making a decision to      construct facilities, these estimates may prove to be inaccurate because      there are numerous uncertainties inherent in estimating reserves;      and |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | we      may be unable to obtain rights-of-way to construct additional pipelines or      the cost to do so may beuneconomical. |
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| §   | Enterprise      Products Partners, EPCO and their affiliates may engage in substantial      competition with us on the terms set forth in the  ASA. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Neither      our partnership agreement nor any other agreement requires EPCO,      Enterprise Products Partners, and Enterprise GP Holdings or their      affiliates (other than our general partner) to pursue a business strategy      that favors us.  Directors and officers of EPCO and the general      partners of Enterprise Products Partners and Enterprise GP      Holdings  and their affiliates have a fiduciary duty to make      decisions in the best interest of their shareholders or unitholders, which      may be contrary to our interests. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Our      general partner is allowed to take into account the interests of parties      other than us, such as EPCO, Enterprise Products Partners and Enterprise      GP Holdings and their affiliates, in resolving conflicts of interest,      which has the effect of limiting its fiduciary duty to our      unitholders. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Some      of the employees of EPCO who provide services to us also may devote      significant time to the business of Enterprise Products Partners and      Enterprise GP Holdings, and will be compensated by EPCO for such      services. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Our      partnership agreement limits the liability and reduces the fiduciary      duties of our general partner, while also restricting the remedies      available to our unitholders for actions that, without these limitations,      might constitute breaches of fiduciary duty.  By purchasing      common units, unitholders will be deemed to have consented to some actions      and conflicts of interest that might otherwise constitute a breach of      fiduciary or other duties under applicablelaw. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Our      general partner determines the amount and timing of asset purchases and      sales, operating expenditures, capital expenditures, borrowings,      repayments of indebtedness, issuances of additional partnership securities      and cash reserves, each of which can affect the amount of cash that is      available for distribution to ourunitholders. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Our      general partner determines which costs, including allocated overhead,      incurred by it and its affiliates are reimbursable by  us. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | EPO  may      propose to contribute additional assets to us and, in making such      proposal, the directors of EPO have a fiduciary duty to EPO’s members and      not to our unitholders. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Our      partnership agreement does not restrict our general partner from causing      us to pay it or its affiliates for any services rendered on terms that are      fair and reasonable to us or entering into additional contractual      arrangements with any of these entities on our  behalf. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Our      general partner intends to limit its liability regarding our contractual      obligations. |
|--------------------|-----------------------------------------------------------------------------------------------------|

| §   | Our      general partner may exercise its rights to call and purchase all of our      common units if, at any time, it and its affiliates own 80% or more of the      outstanding common units. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Our      general partner controls the enforcement of obligations owed to us by it      and its affiliates, including theASA. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------|

| §   | Our      general partner decides whether to retain separate counsel, accountants or      others to perform services for us. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------|

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| §   | the      average of the daily closing prices of the common units over the 20      trading days preceding the date three days before notice of exercise of      the call right is first mailed; and |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | the      highest price paid by our general partner or any of its affiliates for      common units during the 90-day period preceding the date such notice is      first mailed. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | permits      our general partner to make a number of decisions in its individual      capacity, as opposed to in its capacity as our general      partner.  This entitles our general partner to consider only the      interests and factors that it desires, and it has no duty or obligation to      give any consideration to any interest of, or factors affecting, us, our      affiliates or any limited partner.  Examples include the      exercise of its limited call right, its rights to vote or transfer our      common units it owns, its registration rights and the determination of      whether to consent to any merger or consolidation of the partnership, or      amendment to the partnershipagreement; |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | provides      in the absence of bad faith by the ACG Committee or our general partner,      the resolution, action or terms made, taken or provided in connection with      a potential conflict of interest transaction will be conclusive and      binding on all persons (including all partners) and will not constitute a      breach of the partnership agreement or any standard of care or duty      imposed by law; |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | provides      the general partner shall not be liable to the partnership or any partner      for its good faith reliance on the provisions of the partnership agreement      to the extent it has duties, including fiduciary duties, and liabilities      at law or in equity; |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | generally      provides that affiliate transactions and resolutions of conflicts of      interest not approved by the ACG Committee of the board of directors of      our general partner must be on terms no less favorable to us than those      generally provided to or available from unrelated third parties or be      “fair and reasonable” to us; |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| §   | provides      that it shall be presumed that the resolution of any conflicts of interest      by our general partner or the audit, conflicts and governance committee      was not made in bad faith, and in any proceeding brought by or on behalf      of any limited partner or us, the person bringing or prosecuting such      proceeding will have the burden of overcoming such presumption;      and |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | provides      that our general partner and its officers and directors will not be liable      for monetary damages to us or our limited partners for any acts or      omissions unless there has been a final and non-appealable judgment      entered by a court of competent jurisdiction determining that the general      partner or those other persons acted in bad faith or engaged in fraud or      willful misconduct or, in the case of a criminal matter, acted with      knowledge that the conduct wascriminal. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | the      ownership interest of unitholders immediately prior to the issuance will      decrease; |
|--------------------|--------------------------------------------------------------------------------------------------|

| §   | the      amount of cash available for distributions on each common unit may      decrease; |
|--------------------|--------------------------------------------------------------------------------------------|

| §   | the      relative voting strength of each previously outstanding common unit may be      diminished; |
|--------------------|------------------------------------------------------------------------------------------------------|

| §   | the      ratio of taxable income to distributions may increase;  and |
|--------------------|----------------------------------------------------------------------|

| §   | the      market price of our common units maydecline. |
|--------------------|-------------------------------------------------------|

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| §   | we      were conducting business in a state, but had not complied with that      particular state’s partnership statute;or |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------|

| §   | unitholders’      right to act with other unitholders to remove or replace our general      partner, to approve some amendments to our partnership agreement or to      take other actions under our partnership agreement constituted “control”      of our business. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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Item 1B.  Unresolved StaffComments.

Item 3.  LegalProceedings.

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Item 4. 
[Reserved]

PART II

Item 5.  Market for Registrant’s CommonEquity, Related Unitholder Matters and Issuer Purchasesof

|             |   |              |   |   |   |   |   | Cash      Distribution History |
|------------------|--------|-------------------|--------|--------|--------|--------|--------|--------------------------------|
|             |   | Price      Ranges |   |   | Per    |   | Record | Payment                        |
|             |   | High              |   |   | Low    |   |   | Unit                           |   | Date | Date |
| 2008             |   |              |   |   |   |   |   |                           |   |   |   |
| 1st      Quarter |   | $                 | 23.65  |   |   | $      | 18.29  |                           |   | $ | 0.4100 |   | April      30, 2008 | May      7, 2008 |
| 2nd      Quarter |   |              | 21.29  |   |   |   | 18.04  |                           |   |   | 0.4200 |   | July      31, 2008 | August      7, 2008 |
| 3rd      Quarter |   |              | 18.96  |   |   |   | 14.91  |                           |   |   | 0.4200 |   | October      31, 2008 | November      12, 2008 |
| 4th      Quarter |   |              | 16.99  |   |   |   | 9.68   |                           |   |   | 0.4275 |   | January      30, 2009 | February      9, 2009 |
| 2009             |   |              |   |   |   |   |   |                           |   |   |   |   |   |   |
| 1st      Quarter |   |              | 18.07  |   |   |   | 13.55  |                           |   |   | 0.4300 |   | April      30, 2009 | May      8, 2009 |
| 2nd      Quarter |   |              | 20.15  |   |   |   | 14.75  |                           |   |   | 0.4350 |   | July      31, 2009 | August      7, 2009 |
| 3rd      Quarter |   |              | 20.00  |   |   |   | 15.91  |                           |   |   | 0.4400 |   | October      30, 2009 | November      5, 2009 |
| 4th      Quarter |   |              | 24.19  |   |   |   | 19.19  |                           |   |   | 0.4450 |   | January      29, 2010 | February      5, 2010 |

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Item 6.  Selected FinancialData.

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | For      the Year Ended December 31, |    |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------------------------------|---------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | 2009                                      |    |   | 2008 |   |   | 2007 |   |   | 2006 |   |   | 2005 |   |
| Operating      Results Data:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                                      |    |   |   |   |   |   |   |   |   |   |   |   |   |
| Revenues                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   | $                                         | 979.3   |   |   | $ | 1,598.1 |   |   | $ | 1,220.3 |   |   | $ | 1,263.0 |   |   | $ | 1,257.8 |   |
| Net      income                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |                                      | 45.8    |   |   |   | 55.3 |   |   |   | 23.6 |   |   |   | 51.7 |   |   |   | 30.1 |   |
| Net      loss (income) attributable to noncontrolling interest (1)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                                      | 45.3    |   |   |   | (7.4 | ) |   |   | (20.0 | ) |   |   | -- |   |   |   | -- |   |
| Net      income attributable to Duncan Energy Partners                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |                                      | 91.1    |   |   |   | 47.9 |   |   |   | 3.6 |   |   |   | 51.7 |   |   |   | 30.1 |   |
| Allocation      of net income attributable to Duncan Energy Partners L.P.:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                      |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|    Limited      partners of Duncan Energy Partners                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   | $                                         | 90.5    |   |   | $ | 27.8 |   |   | $ | 18.8 |   |   |   | n/a |   |   |   | n/a |   |
|    General      partner of Duncan Energy Partners                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |                                      | 0.6     |   |   |   | 0.5 |   |   |   | 0.4 |   |   |   | n/a |   |   |   | n/a |   |
|    Former      owner of DEP II Midstream Businesses                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                                      | n/a     |   |   |   | 19.6 |   |   |   | (20.6 | ) |   |   | (3.7 | ) |   |   | (9.0 | ) |
|    Former      owner of DEP I Midstream Businesses                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |                                      | n/a     |   |   |   | n/a |   |   |   | 5.0 |   |   |   | 55.3 |   |   |   | 39.1 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |                                      |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Basic      and diluted earnings per unit                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   | $                                         | 1.57    |   |   | $ | 1.22 |   |   | $ | 0.93 |   |   |   | n/a |   |   |   | n/a |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |                                      |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Cash      distributions per common unit (2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   | $                                         | 1.75    |   |   | $ | 1.68 |   |   | $ | 1.46 |   |   |   | n/a |   |   |   | n/a |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |                                      |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Financial      position data:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |                                      |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total      assets (3)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   | $                                         | 4,770.8 |   |   | $ | 4,594.7 |   |   | $ | 3,983.3 |   |   | $ | 3,798.4 |   |   | $ | 3,688.9 |   |
| Long-term      debt (4)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |                                      | 457.3   |   |   |   | 484.3 |   |   |   | 200.0 |   |   |   | n/a |   |   |   | n/a |   |
| Former      owner’s equity in DEP II Midstream Businesses (5)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |                                      | n/a     |   |   |   | n/a |   |   |   | 2,880.1 |   |   |   | 2,853.8 |   |   |   | 2,903.6 |   |
| Former      owner’s equity in DEP I Midstream Businesses (5)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                                      | n/a     |   |   |   | n/a |   |   |   | n/a |   |   |   | 725.8 |   |   |   | 527.8 |   |
| Equity      (6)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |                                      | 4,136.9 |   |   |   | 3,844.2 |   |   |   | 669.9 |   |   |   | n/a |   |   |   | n/a |   |
| Total      common units outstanding  (7)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                                      | 57.7    |   |   |   | 57.7 |   |   |   | 20.3 |   |   |   | n/a |   |   |   | n/a |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |                                      |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| (1)        Represents      EPO’s share of the earnings of the DEP I and DEP II Midstream Businesses      following the drop down of each set of businesses to Duncan Energy      Partners. The DEP I drop down transaction was effective February 1,      2007 for financial accounting and reporting purposes. The DEP II drop      down transaction was effective December 8, 2008.(2)        Represents      cash distributions declared by Duncan Energy Partners since its initial      public offering in February 2007.(3)        Total      assets have increased since our initial public offering due to capital      spending.(4)        Represents      our Revolving Credit Facility and Term Loan Agreement, as applicable, for      the periods in which Duncan Energy Partners had borrowings outstanding      under each agreement.(5)        Represents      the net assets of the combined DEP I or DEP II Midstream Businesses (as      applicable) prior to the date they were contributed to Duncan Energy      Partners.(6)        Represents      the noncontrolling interest in subsidiaries, limited and general partner      capital accounts and related accumulated other comprehensive income of      Duncan Energy Partners since February 2007.(7)        The      amount presented for December 31, 2008 includes 37.3 Class B units that      converted to common units on February 1, 2009. |   |

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Item 7.  Management’s Discussion and Analysisof Financial Condition and Results of Operations.

| §   | Cautionary      Note Regarding Forward-LookingStatements. |
|--------------------|-----------------------------------------------------------|

| §   | Overview      of Business. |
|--------------------|----------------------------|

| §   | Basis      of Financial StatementPresentation. |
|--------------------|------------------------------------------------|

| §   | Supplemental      Selected Financial Information of Duncan Energy Partners L.P. – Discusses      financial information and sources and uses of cash for Duncan Energy      Partners L.P. on a standalonebasis. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Significant      Recent Developments – Discusses significant developments during the year      ended December 31, 2009 and through the date of this    filing. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | General      Outlook for 2010. |
|--------------------|--------------------------------|

| §   | Results      of Operations – Discusses material year-to-year variances in our      Statements of ConsolidatedOperations. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------|

| §   | Liquidity      and Capital Resources – Addresses available sources of liquidity and      capital resources and includes a discussion of our capital spending      program. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Critical      Accounting Policies and Estimates. |
|--------------------|--------------------------------------------------|

| §   | Other      Items – Includes information related to contractual obligations,      off-balance sheet arrangements and all other  matters. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------|

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|                                                                           |   |                          | Eleven       |   |
|--------------------------------------------------------------------------------|--------|-------------------------------|--------------------------------------------|--------|
|                                                                           |   | Twelve      Months            | Months       |   |
|                                                                           |   |  Ended      December 31, |                                       |
|                                                                           |   | 2009                          |                                       |   |  2008 |   | 2007       |   |
|                                                                           |   | (dollars      in millions)    |
| Selected      income statement information:                                    |   |                          |                                       |   |   |   |   |   |
|          Equity in income - DEP I Midstream Businesses          |   | $                             | 44.9                                       |   |   | $ | 37.2 |   |   | $ |  30.0 |   |
|          Equity in income - DEP II Midstream Businesses         |   | $                             | 60.1                                       |   |   | $ | 4.5 |   |   | $ |  -- |   |
|          General and administrative costs                       |   | $                             | 0.4                                        |   |   | $ | 1.4 |   |   | $ |  1.5 |   |
|          Interest expense                                       |   | $                             | 13.5                                       |   |   | $ | 12.0 |   |   | $ |  9.3 |   |
|          Net income attributable to Duncan Energy Partners L.P. |   | $                             | 91.1                                       |   |   | $ | 28.3 |   |   | $ |  19.2 |   |
| Selected      balance sheet information at each period end:                    |   |                          |                                       |   |   |   |   |   |   |   |   |   |
|          Investments in DEP I Midstream Businesses              |   | $                             | 510.2                                      |   |   | $ | 512.7 |   |   | $ |  502.7 |   |
|          Investments in DEP II Midstream Businesses             |   | $                             | 709.7                                      |   |   | $ | 730.5 |   |   | $ |  -- |   |
|          Long-term debt                                         |   | $                             | 457.3                                      |   |   | $ | 484.3 |   |   | $ |  200.0 |   |
|          Partners’ equity                                 |   | $                             | 761.4                                      |   |   | $ | 752.8 |   |   | $ |   314.6 |   |

|                                                                                         |   |                       |   |   |   |   |   | Eleven |   |
|----------------------------------------------------------------------------------------------|--------|----------------------------|--------|--------|--------|--------|--------|--------|--------|
|                                                                                         |   | Twelve      Months         |   |   | Months |   |
|                                                                                         |   | Ended      December 31,    |   |
|                                                                                         |   | 2009                       |   |   | 2008   |   |   | 2007   |   |
|                                                                                         |   | (dollars      in millions) |   |
| Distributions      paid to Duncan Energy Partners L.P.                                       |   |                       |   |   |   |   |   |   |   |
|          with      respect to each period from: |   |                       |   |   |   |   |   |   |   |
| DEP      I Midstream Businesses                                                              |   | $                          | 49.2   |   |   | $      | 93.7   |   |   | $ | 115.3 |   |
| DEP      II Midstream Businesses                                                             |   | $                          | 86.5   |   |   | $      | 5.6    |   |   | $ | -- |   |

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|                                                                                                                                                                      |   | For      the Year Ended December 31, |   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------------------------|--------|
|                                                                                                                                                                      |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Natural      Gas Pipelines & Services, net:                                                                                                                           |   |                                 |   |   |   |   |   |   |   |
|    Natural      gas throughput volumes (BBtus/d)                                                                                                           |   |                                 |   |   |   |   |   |   |   |
|       Texas      Intrastate System                                                                                                          |   |                                 | 3,902  |   |   |   | 4,021 |   |   |   | 3,550 |   |
|       Acadian      Gas System:                                                                                                              |   |                                 |   |   |   |   |   |   |   |   |   |   |
|           Transportation      volumes                                                                                   |   |                                 | 436    |   |   |   | 378 |   |   |   | 416 |   |
|           Sales      volumes (1)                                                                                        |   |                                 | 320    |   |   |   | 331 |   |   |   | 308 |   |
|       Total      natural gas throughput volumes                                                                                             |   |                                 | 4,658  |   |   |   | 4,730 |   |   |   | 4,274 |   |
| NGL      Pipelines & Services, net:                                                                                                                                   |   |                                 |   |   |   |   |   |   |   |   |   |   |
|     NGL      throughput volumes (MBPD)                                                                                                                |   |                                 |   |   |   |   |   |   |   |   |   |   |
|        South      Texas NGL System - Pipelines                                                                                         |   |                                 | 109    |   |   |   | 126 |   |   |   | 124 |   |
|     NGL      fractionation volumes (MBPD)                                                                                                             |   |                                 |   |   |   |   |   |   |   |   |   |   |
|        South      Texas NGL System - Fractionators                                                                                     |   |                                 | 77     |   |   |   | 80 |   |   |   | 72 |   |
| Petrochemical      Services, net:                                                                                                                                         |   |                                 |   |   |   |   |   |   |   |   |   |   |
|    Propylene      throughput volumes (MBPD)                                                                                                                |   |                                 |   |   |   |   |   |   |   |   |   |   |
|       Lou-Tex      Propylene Pipeline                                                                                                       |   |                                 | 21     |   |   |   | 25 |   |   |   | 25 |   |
|       Sabine      Propylene Pipeline                                                                                                        |   |                                 | 9      |   |   |   | 10 |   |   |   | 12 |   |
|       Total      propylene throughput volumes                                                                                               |   |                                 | 30     |   |   |   | 35 |   |   |   | 37 |   |
|                                                                                                                                                                      |   |                                 |   |   |   |   |   |   |   |   |   |   |
| (1)        Includes      average net sales volumes for Evangeline of 50 BBtus/d for each of the      years ended December 31, 2009, 2008 and 2007,respectively. |   |

|                                                            |   | For      the Year Ended December 31, |   |
|-----------------------------------------------------------------|--------|--------------------------------------|--------|
|                                                            |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Revenues                                                        |   | $                                    | 979.3  |   |   | $ | 1,598.1 |   |   | $ | 1,220.3 |   |
| Operating      costs and expenses                               |   |                                 | 908.3  |   |   |   | 1,512.8 |   |   |   | 1,171.0 |   |
| General      and administrative costs                           |   |                                 | 11.2   |   |   |   | 18.3 |   |   |   | 13.1 |   |
| Equity      in income of Evangeline                             |   |                                 | 1.1    |   |   |   | 0.9 |   |   |   | 0.2 |   |
| Operating      income                                           |   |                                 | 60.9   |   |   |   | 67.9 |   |   |   | 36.4 |   |
| Interest      expense                                           |   |                                 | 14.0   |   |   |   | 12.0 |   |   |   | 9.3 |   |
| Net      income                                                 |   |                                 | 45.8   |   |   |   | 55.3 |   |   |   | 23.6 |   |
| Net      loss (income) attributable to noncontrolling interest: |   |                                 |   |   |   |   |   |   |   |   |   |   |
| DEP      I Midstream Businesses – Parent                  |   |                                 | (15.3  | ) |   |   | (11.4 | ) |   |   | (20.0 | ) |
| DEP      II Midstream Businesses – Parent                 |   |                                 | 60.6   |   |   |   | 4.0 |   |   |   | -- |   |
| Net      income attributable to Duncan Energy Partners          |   |                                 | 91.1   |   |   |   | 47.9 |   |   |   | 3.6 |   |

|                                      |   | For      the Year Ended December 31, |   |
|-------------------------------------------|--------|--------------------------------------|--------|
|                                      |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Natural      Gas Pipelines & Services |   | $                                    | 148.2  |   |   | $ | 159.0 |   |   | $ | 122.5 |   |
| NGL      Pipelines & Services         |   |                                 | 103.4  |   |   |   | 82.9 |   |   |   | 87.9 |   |
| Petrochemical      Services               |   |                                 | 10.5   |   |   |   | 11.1 |   |   |   | 14.3 |   |
| Total      segment gross operating margin |   | $                                    | 262.1  |   |   | $ | 253.0 |   |   | $ | 224.7 |   |

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|                                           |   | For      the Year Ended December 31, |   |
|------------------------------------------------|--------|--------------------------------------|--------|
|                                           |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Natural      Gas Pipelines & Services:     |   |                                 |   |   |   |   |   |   |   |
|  Sales      of natural gas                |   | $                                    | 460.2  |   |   | $ | 1,100.2 |   |   | $ | 794.1 |   |
|  Natural      gas transportation services |   |                                 | 263.2  |   |   |   | 246.7 |   |   |   | 212.8 |   |
|  Natural      gas storage services        |   |                                 | 15.3   |   |   |   | 8.4 |   |   |   | 1.5 |   |
| Total      segment revenues                    |   | $                                    | 738.7  |   |   | $ | 1,355.3 |   |   | $ | 1,008.4 |   |
|                                           |   |                                 |   |   |   |   |   |   |   |   |   |   |
| NGL      Pipelines & Services:             |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Sales      of NGLs                             |   | $                                    | 35.0   |   |   | $ | 47.9 |   |   | $ | 40.3 |   |
| Sales      of other products                   |   |                                 | 11.3   |   |   |   | 15.0 |   |   |   | 10.8 |   |
| NGL      and petrochemical storage services    |   |                                 | 104.9  |   |   |   | 87.4 |   |   |   | 68.9 |   |
| NGL      fractionation services                |   |                                 | 29.5   |   |   |   | 32.4 |   |   |   | 30.3 |   |
| NGL      transportation services               |   |                                 | 43.8   |   |   |   | 43.6 |   |   |   | 42.5 |   |
| Other      services                            |   |                                 | 2.5    |   |   |   | 2.3 |   |   |   | 1.7 |   |
| Total      segment revenues                    |   | $                                    | 227.0  |   |   | $ | 228.6 |   |   | $ | 194.5 |   |
|                                           |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Petrochemical      Services:                   |   |                                 |   |   |   |   |   |   |   |   |   |   |
|  Propylene      transportation services   |   | $                                    | 13.6   |   |   | $ | 14.2 |   |   | $ | 17.4 |   |
|                                           |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Total      consolidated revenues               |   | $                                    | 979.3  |   |   | $ | 1,598.1 |   |   | $ | 1,220.3 |   |

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| Underwritten      Equity Offering                                                                                                                                                                                                                                                                                                                                                                                               |   | Number      of Common Units Issued |      |   | OfferingPrice(1) |   |   | Net Proceeds      (2)(in      millions) |   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|------------------------------------|-----------|--------|------------------|--------|--------|----------------------------------------------|--------|
| June      2009 underwritten offering (3)                                                                                                                                                                                                                                                                                                                                                                                        |   |                               | 8,943,400 |   |             | $      | 16.00  |                                         |   | $ | 137.4 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                            |   |                               |      |   |             |   |   |                                         |   |   |   |   |
| (1)        The      public offering price, net of the underwriting discount, was $15.36 per      unit.(2)        Net      proceeds from these equity offerings were used to repurchase an equal      number of our common units beneficially owned by EPO.(3)        Includes      our underwriters’ exercise of a portion of their 30-day option to purchase      additional common units. |   |

|                                                 |   | For      the Year Ended December 31, |   |
|------------------------------------------------------|--------|--------------------------------------|--------|
|                                                 |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Net      cash flows provided by operating activities |   | $                                    | 156.0  |   |   | $ | 220.1 |   |   | $ | 217.1 |   |
| Cash      used in investing activities               |   |                                 | 383.2  |   |   |   | 748.8 |   |   |   | 352.4 |   |
| Cash      provided by financing activities           |   |                                 | 218.1  |   |   |   | 539.5 |   |   |   | 137.5 |   |

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|                                                                                                                                                                                                                                                                                                                                                                                                              |   | For      the Twelve Months |   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                              |   | Ended      December 31,    |   |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   | 2009                       |   |   | 2008 |   |
| DEP      I Midstream Businesses:                                                                                                                                                                                                                                                                                                                                                                                  |   |                       |   |   |   |   |
| Expansion      capital spending (1)                                                                                                                                                                                                                                                                                                                                                                               |   | $                          | 28.5   |   |   | $ | 127.7 |   |
| Sustaining      capital expenditures (2)                                                                                                                                                                                                                                                                                                                                                                          |   |                       | 13.9   |   |   |   | 12.8 |   |
| DEP      II Midstream Businesses:                                                                                                                                                                                                                                                                                                                                                                                 |   |                       |   |   |   |   |   |   |
| Expansion      capital spending (1)                                                                                                                                                                                                                                                                                                                                                                               |   |                       | 311.0  |   |   |   | 576.5 |   |
| Sustaining      capital expenditures (2)                                                                                                                                                                                                                                                                                                                                                                          |   |                       | 35.7   |   |   |   | 42.5 |   |
| Total      capital spending                                                                                                                                                                                                                                                                                                                                                                                       |   | $                          | 389.1  |   |   | $ | 759.5 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                              |   |                       |   |   |   |   |   |   |
| (1)        EPO      funded 100% of expansion capital spending during the periods      presented.(2)        Sustaining      capital expenditures are capital expenditures (as defined by U.S. GAAP)      resulting from improvements to and major renewals of existing      assets. Such expenditures serve to maintain existing operations but      do not generate additional revenues. |   |

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|        |   | For      the Year Ended December 31, |   |
|-------------|--------|--------------------------------------|--------|
|        |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Expensed    |   | $                                    | 14.1   |   |   | $ | 20.6 |   |   | $ | 14.9 |   |
| Capitalized |   |                                 | 17.0   |   |   |   | 22.9 |   |   |   | 24.1 |   |
| Total       |   | $                                    | 31.1   |   |   | $ | 43.5 |   |   | $ | 39.0 |   |

| §   | changes      in laws and regulations that limit the estimated economic life of an      asset; |
|--------------------|-----------------------------------------------------------------------------------------------|

| §   | changes      in technology that render an assetobsolete; |
|--------------------|----------------------------------------------------------|

| §   | changes      in expected salvage values; or |
|--------------------|---------------------------------------------|

| §   | changes      in the forecast life of applicable resource basins, if  any. |
|--------------------|---------------------------------------------------------------------------|

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| §   | the      expected useful life of the related tangible assets (e.g., fractionation      facility, pipeline or other asset); |
|--------------------|----------------------------------------------------------------------------------------------------------------------------|

| §   | any      legal or regulatory developments that would impact such contractual      rights; and |
|--------------------|-----------------------------------------------------------------------------------------------|

| §   | any      contractual provisions that enable us to renew or extend such      agreements. |
|--------------------|-----------------------------------------------------------------------------------------|

| §   | discrete      financial forecasts for the assets classified within the reporting unit,      which rely on management’s estimates of operating margins and      transportation volumes; |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | long-term      growth rates for cash flows beyond the discrete forecast period;      and |
|--------------------|------------------------------------------------------------------------------------------|

| §   | appropriate      discount rates. |
|--------------------|----------------------------------|

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| §   | persuasive      evidence of an exchange arrangementexists; |
|--------------------|------------------------------------------------------------|

| §   | delivery      has occurred or services have beenrendered; |
|--------------------|-----------------------------------------------------------|

| §   | the      buyer’s price is fixed or determinable;and |
|--------------------|-----------------------------------------------------------|

| §   | collectability      is reasonably assured. |
|--------------------|--------------------------------------------|

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|                                                                                                                                                                           |   | December      31, |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------|--------|
|                                                                                                                                                                           |   | 2009              |   |   | 2008 |   |
| Natural      gas imbalance receivables                                                                                                                                         |   | $                 | 9.8    |   |   | $ | 35.7 |   |
| Natural      gas imbalance payables (1)                                                                                                                                        |   |              | 11.0   |   |   |   | 43.6 |   |
| (1)        Reflected      as a component of “Accrued product payables” on our Consolidated Balance      Sheets included in Item 8 of this annual report. |   |

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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   | Payment      or Settlement due by Period |    |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|------------------------------------------|---------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   |                                     |    |   | Less      than |   |   |   | 1-3     |   |   |   | 4-5     |   |   | More      than |   |
| Contractual Obligations      (1)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   | Total                                    |    |   | 1      year |   |   | years |   |   | years |   |   | 5      years |   |
| Scheduled      maturities of long term debt (2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   | $                                        | 457.3   |   |   | $ | -- |   |   | $ | 457.3 |   |   | $ | -- |   |   | $ | -- |   |
| Estimated      cash interest payments (3)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | $                                        | 14.8    |   |   | $ | 11.1 |   |   | $ | 3.7 |   |   | $ | -- |   |   | $ | -- |   |
| Operating      lease obligations (4)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   | $                                        | 115.6   |   |   | $ | 9.0 |   |   | $ | 17.6 |   |   | $ | 14.0 |   |   | $ | 75.0 |   |
| Purchase      obligations:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                                     |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Product      purchase commitments:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |                                     |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Estimated      payment obligations:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |                                     |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Natural      gas (5)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   | $                                        | 511.7   |   |   | $ | 257.3 |   |   | $ | 254.4 |   |   | $ | -- |   |   | $ | -- |   |
| Other                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   | $                                        | 0.1     |   |   | $ |   | * |   | $ | 0.1 |   |   | $ | -- |   |   | $ | -- |   |
| Underlying      major volume commitments:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                                     |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Natural      gas (in BBtus)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                                     | 77,207  |   |   |   | 40,657 |   |   |   | 36,550 |   |   |   | -- |   |   |   | -- |   |
| Capital      expenditure commitments (6)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   | $                                        | 175.3   |   |   | $ | 175.3 |   |   | $ | -- |   |   | $ | -- |   |   | $ | -- |   |
| Other      long-term liabilities (7)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   | $                                        | 6.4     |   |   | $ | -- |   |   | $ | 0.2 |   |   | $ | -- |   |   | $ | 6.2 |   |
| Total                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   | $                                        | 1,281.2 |   |   | $ | 452.7 |   |   | $ | 733.3 |   |   | $ | 14.0 |   |   | $ | 81.2 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   |                                     |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| *        Indicates amounts are immaterial and less than $0.1      million.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   |                                     |    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| (1)        The      contractual obligations presented in this table reflect 100% of our      subsidiaries’ obligations even though we own less than a 100% equity      interest in our operating subsidiaries.(2)        Represents      our scheduled future maturities of consolidated debt principal obligations      for the periods indicated. See Note 11 of the Notes to Consolidated      Financial Statements included under Item 8 of this annual report for      information regarding our debt obligations.(3)        Our      estimated cash payments for interest are based on the principle amount of      consolidated debt obligations outstanding at December 31, 2009. In      calculating these amounts, we applied the weighted-average variable      interest rates paid during 2009 associated with such debt. See Note      11 of the Notes to Consolidated Financial Statements included under Item 8      of this annual report for the weighted-average variable interest rates      charged in 2009 under our credit agreements. In addition, our      estimate of cash payments for interest gives effect to interest rate swap      agreements that were in place at December 31, 2009. See Note 6 of the      Notes to Consolidated Financial Statements included under Item 8 of this      annual report for information regarding these derivative      instruments.(4)        Primarily      represents operating leases for (i) underground caverns for the storage of      natural gas and NGLs and (ii) land held pursuant to right-of-way      agreements. See Note 17 of the Notes to Consolidated Financial      Statements included under Item 8 of this annual report for information      regarding our operating leases.(5)        Represents      natural gas purchase commitments of Acadian Gas to satisfy its sales      commitments to Evangeline. See Note 17 of the Notes to Consolidated      Financial Statements included under Item 8 of this annual report for      information regarding our purchase obligations. The estimated payment      obligations are based on contractual prices in effect at December 31, 2009      applied to all future volume commitments. Actual future payment      obligations may vary depending on prices at the time of      delivery.(6)        Represents      short-term unconditional payment obligations related to our capital      projects (on a 100% basis). With respect to the amount presented, we      expect reimbursements of $113.9 million from EPO.(7)        As      reflected on our Consolidated Balance Sheet at December 31, 2009, other      long-term liabilities primarily represent noncurrent portions of       asset retirement obligations.  For information regarding our      asset retirement obligations, see Note 7 of our Notes to Consolidated      Financial Statements included under Item 8 of this annual      report. |   |

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|                                                                                          |   | For      the Year Ended December 31, |   |
|-----------------------------------------------------------------------------------------------|--------|--------------------------------------|--------|
|                                                                                          |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Total      segment gross operating margin                                                     |   | $                                    | 262.1  |   |   | $ | 253.0 |   |   | $ | 224.7 |   |
| Adjustments      to reconcile total segment gross operating margin                            |   |                                 |   |   |   |   |   |   |   |   |   |   |
| to      operating income:                                                                     |   |                                 |   |   |   |   |   |   |   |   |   |   |
|    Depreciation,      amortization and accretion in                            |   |                                 |   |   |   |   |   |   |   |   |   |   |
|           operating      costs and expenses |   |                                 | (186.3 | ) |   |   | (167.3 | ) |   |   | (175.3 | ) |
|     Impairment      charge included in operating                          |   |                                 |   |   |   |   |   |   |   |   |   |   |
|           costs      and expenses           |   |                                 | (4.2   | ) |   |   | -- |   |   |   | -- |   |
|    Gain      on asset sales and related transactions in                        |   |                                 |   |   |   |   |   |   |   |   |   |   |
|           operating      costs and expenses |   |                                 | 0.5    |   |   |   | 0.5 |   |   |   | 0.1 |   |
|    General      and administrative costs                                       |   |                                 | (11.2  | ) |   |   | (18.3 | ) |   |   | (13.1 | ) |
| GAAP  operating      income                                                         |   |                                 | 60.9   |   |   |   | 67.9 |   |   |   | 36.4 |   |
|    Other      income (expense), net                                            |   |                                 | (13.8  | ) |   |   | (11.5 | ) |   |   | (8.6 | ) |
|    Provision      for income taxes                                             |   |                                 | (1.3   | ) |   |   | (1.1 | ) |   |   | (4.2 | ) |
| GAAP      net income                                                                          |   | $                                    | 45.8   |   |   | $ | 55.3 |   |   | $ | 23.6 |   |

| §   | Fair      Value Measurements; and |
|--------------------|-----------------------------------|

| §   | Consolidation      of Variable Interest Entities |
|--------------------|--------------------------------------------------|

Item 7A.  Quantitative and QualitativeDisclosures about Market Risk

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|                                                       |                          |   | Portfolio      FV at   |   |
|------------------------------------------------------------|-------------------------------|--------|------------------------|--------|
| Scenario                                                   | Resulting      Classification |   | December      31, 2008 |   |   | December      31, 2009 |   |   | January      31, 2010 |   |
| FV      assuming no change in underlying interest rates    | Liability                     |   | $                      | 9.8    |   |   | $ | 5.5 |   |   | $ | 5.7 |   |
| FV      assuming 10% increase in underlying interest rates | Liability                     |   |                   | 9.4    |   |   |   | 5.5 |   |   |   | 5.7 |   |
| FV      assuming 10% decrease in underlying interest rates | Liability                     |   |                   | 10.2   |   |   |   | 5.6 |   |   |   | 5.7 |   |

|                                                                         |                          |   | Portfolio      FV at   |   |
|------------------------------------------------------------------------------|-------------------------------|--------|------------------------|--------|
| Scenario                                                                     | Resulting      Classification |   | December      31, 2008 |   |   | December      31, 2009 |   |   | January      31, 2010 |   |
| FV      assuming no change in underlying commodity prices                    | Asset      (Liability)        |   | $                      | (0.1   | ) |   | $ | * |   |   | $ | * |   |
| FV      assuming 10% increase in underlying commodity prices                 | Asset      (Liability)        |   |                   | (0.1   | ) |   |   | * |   |   |   | * |   |
| FV      assuming 10% decrease in underlying commodity prices                 | Asset      (Liability)        |   |                   | (0.1   | ) |   |   | * |   |   |   | * |   |
| * Indicates      that amounts are negligible and less than $0.1 million |                          |

Item 8.  Financial Statements andSupplementary Data.

Item 9.  Changes in and Disagreements withAccountants on Accounting and Financial Disclosure.

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Item 9A.  Controls andProcedures.

| (i)   | that      our disclosure controls and procedures are designed to ensure that      information required to be disclosed by us in the reports that we file or      submit under the Securities Exchange Act of 1934 is recorded, processed,      summarized and reported within the time periods specified in the SEC’s      rules and forms, and that such information is accumulated and communicated      to our management, including the CEO and CFO, as appropriate to allow      timely decisions regarding required disclosure;  and |
|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (ii)   | that      our disclosure controls and procedures are  effective. |
|------------------|------------------------------------------------------------------|

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|                                          /s/ Richard H.      Bachmann                                      |    /s/ W. Randall      Fowler                                          |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                              Name:                                                                                                                                                                                                                                                            | Richard      H. Bachmann                                                                                                                                                                                                                                                                      |         Name: | W.      Randall Fowler |
|                                              Title:                                                                                                                                                                                                                                                           | Chief      Executive Officer of                                                                                                                                                                                                                                                               |         Title: | Chief      Financial Officer of |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   our      general partner,                                                                                                                                                                                                                                                         |   |   our      general partner, |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   DEP      Holdings, LLC                                                                                                                                                                                                                                                            |   |   DEP      Holdings, LLC |

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Item 9B.  OtherInformation.

PART III

Item 10.  Directors, Executive Officers andCorporate Governance.

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| §   | review      potential conflicts of interest, including related party      transactions; |
|--------------------|-----------------------------------------------------------------------------------------|

| §   | monitoring      the integrity of our financial reporting process and related systems of      internal control; |
|--------------------|----------------------------------------------------------------------------------------------------------------|

| §   | ensuring      our legal and regulatory compliance and that of DEP  GP; |
|--------------------|------------------------------------------------------------------------|

| §   | overseeing      the independence and performance of our independent public      accountant; |
|--------------------|---------------------------------------------------------------------------------------------|

| §   | approving      all services performed by our independent public    accountant; |
|--------------------|--------------------------------------------------------------------------------|

| §   | providing      for an avenue of communication among the independent public accountant,      management, internal audit function and the  Board; |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | encouraging      adherence to and continuous improvement of our policies, procedures and      practices at all levels;  |
|--------------------|------------------------------------------------------------------------------------------------------------------------------|

| §   | reviewing      areas of potential significant financial risk to our businesses;      and |
|--------------------|------------------------------------------------------------------------------------------|

| §   | approving      awards granted under our long-term incentive  plans. |
|--------------------|---------------------------------------------------------------------|

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| Name                                                                                                                                            |   | Age    |   | Position      with DEP GP |
|-------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------|---------------------------|
| Dan      L. Duncan (1)                                                                                                                          |   |   | 77     |                      | Director      and Chairman |
| Richard      H. Bachmann (1)                                                                                                                    |   |   | 57     |                      | Director,      President and Chief Executive Officer |
| W.      Randall Fowler (1)                                                                                                                      |   |   | 53     |                      | Director,      Executive Vice President and Chief Financial Officer |
| A.      James Teague (1)                                                                                                                        |   |   | 64     |                      | Director,      Executive Vice President and Chief Commercial Officer |
| Michael      A. Creel                                                                                                                           |   |   | 56     |                      | Director |
| Dr.      Ralph S. Cunningham                                                                                                                    |   |   | 69     |                      | Director |
| Larry      J. Casey (2)                                                                                                                         |   |   | 77     |                      | Director |
| Joe      D. Havens (2)                                                                                                                          |   |   | 80     |                      | Director |
| William      A. Bruckmann, III (2,3)                                                                                                            |   |   | 58     |                      | Director |
| Richard      S. Snell (2)                                                                                                                       |   |   | 67     |                      | Director |
| William      Ordemann (1)                                                                                                                       |   |   | 50     |                      | Executive      Vice President |
| Bryan      F. Bulawa (1)                                                                                                                        |   |   | 40     |                      | Senior      Vice President and Treasurer |
| Michael      J. Knesek (1)                                                                                                                      |   |   | 55     |                      | Senior      Vice President, Principal Accounting Officer and  Controller |
|                                                                                                                                            |   |   |   |                      |   |
| (1)        Executive      Officer(2)        Member      of ACG Committee(3)        Chairman      of ACG Committee |

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Item11.  ExecutiveCompensation.

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |   | Cash   |    |   | Cash         |   |    | Unit         |   |   | Option       |   |   | All      Other |    |   |   |   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------|---------|--------|--------------|--------|---------|--------------|--------|--------|--------------|--------|--------|----------------|---------|--------|--------|--------|
| Name      and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |   | Salary |    |   | Bonus        |   |    | Awards       |   |   | Awards       |   |   | Comp.          |    |   | Total  |   |
| Principal      Position                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | Year   |   | ($)    |    |   | ($)      (1) |   |    | ($)      (2) |   |   | ($)      (3) |   |   | ($)      (4)   |    |   | ($)    |   |
| Richard      H. Bachmann                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 2009   |   | $      | 129,000 |   |         | $      | 190,000 |         |   | $      | 550,867      |   |   | $              | 133,080 |   |   | $      | 47,295 |   |   | $ | 1,050,242 |   |
|    (President      and Chief Executive Officer)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | 2008   |   |   | 159,688 |   |         |   | 106,250 |         |   |   | 972,925      |   |   |           | 35,700  |   |   |   | 59,055 |   |   |   | 1,333,618 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | 2007   |   |   | 71,508  |   |         |   | 43,338  |         |   |   | 284,979      |   |   |           | 18,733  |   |   |   | 22,077 |   |   |   | 440,635 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |   |    |   |         |   |    |         |   |   |         |   |   |           |    |   |   |   |   |   |   |   |   |   |
| W.      Randall Fowler                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 2009   |   |   | 55,781  |   |         |   | 95,625  |         |   |   | 262,684      |   |   |           | 65,416  |   |   |   | 21,660 |   |   |   | 501,166 |   |
|    (Executive      Vice President and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | 2008   |   |   | 63,594  |   |         |   | 43,750  |         |   |   | 459,152      |   |   |           | 17,850  |   |   |   | 20,882 |   |   |   | 605,228 |   |
|     Chief      Financial Officer)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 2007   |   |   | 22,675  |   |         |   | 13,800  |         |   |   | 112,337      |   |   |           | 6,295   |   |   |   | 5,684 |   |   |   | 160,791 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |   |    |   |         |   |    |         |   |   |         |   |   |           |    |   |   |   |   |   |   |   |   |   |
| A.      J. Teague (5)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 2009   |   |   | 162,500 |   |         |   | 237,500 |         |   |   | 611,396      |   |   |           | 166,350 |   |   |   | 58,437 |   |   |   | 1,236,183 |   |
|    (Executive      Vice President and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |   |    |   |         |   |    |         |   |   |         |   |   |           |    |   |   |   |   |   |   |   |   |   |
|     Chief      Commercial Officer)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |   |   |    |   |         |   |    |         |   |   |         |   |   |           |    |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |   |    |   |         |   |    |         |   |   |         |   |   |           |    |   |   |   |   |   |   |   |   |   |
| William      Ordemann (6)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 2009   |   |   | 63,232  |   |         |   | 49,600  |         |   |   | 262,919      |   |   |           | 90,552  |   |   |   | 35,275 |   |   |   | 501,578 |   |
|     (Executive      Vice President)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | 2008   |   |   | 15,656  |   |         |   | 10,600  |         |   |   | 71,192       |   |   |           | 5,712   |   |   |   | 6,314 |   |   |   | 109,474 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |   |    |   |         |   |    |         |   |   |         |   |   |           |    |   |   |   |   |   |   |   |   |   |
| Michael      J. Knesek                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 2009   |   |   | 50,700  |   |         |   | 27,625  |         |   |   | 158,996      |   |   |           | 54,064  |   |   |   | 17,099 |   |   |   | 308,484 |   |
|     (Senior      Vice President, Controller                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | 2008   |   |   | 61,800  |   |         |   | 26,000  |         |   |   | 185,478      |   |   |           | 14,280  |   |   |   | 21,200 |   |   |   | 308,758 |   |
|      and      Principal Accounting Officer)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | 2007   |   |   | 22,089  |   |         |   | 9,000   |         |   |   | 69,381       |   |   |           | 6,030   |   |   |   | 5,814 |   |   |   | 112,314 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |   |   |    |   |         |   |    |         |   |   |         |   |   |           |    |   |   |   |   |   |   |   |   |   |
| (1)        Amounts      represent discretionary annual cash awards accrued with respect to the      years presented. Cash awards are paid in February of the following      year (e.g., the cash awards for 2009 were paid in February      2010).(2)        Amounts      represent the aggregate grant date fair value of restricted unit and      Employee Partnership profits interests awards granted during each year      presented. For information about assumptions made in the valuation of      these awards, see Note 5 of the Notes to Consolidated Financial Statements      included under Item 8 of this annual report, which information is      incorporated by reference herein.(3)        Amounts      represent the aggregate grant date fair value of unit option awards      granted during each year presented. For information about assumptions      made in the valuation of these awards, see Note 5 of the Notes to      Consolidated Financial Statements included under Item 8 of this annual      report, which information is incorporated by referenceherein.(4)        Amounts      primarily represent (i) matching contributions under funded, qualified,      defined contribution retirement plans, (ii) quarterly distributions paid      on incentive plan awards and (iii) the imputed value of life insurance      premiums paid on behalf of the officer.(5)        Mr.      Teague was elected our Chief Commercial Officer in July 2008. Mr.      Teague devoted a minimal amount of his time to our business activities      during 2008 and instead indirectly supervised the activities of other      personnel who were more directly involved in our affairs.(6)        Mr.      Ordemann devoted a minimal amount of his time to our business activities      during 2007 and instead indirectly supervised the activities of other      personnel who were more directly involved in our affairs. As a      result, Mr. Ordemann allocated a nominal amount of his compensation to us      in 2007. |   |

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|                           |   |   | Duncan   |   |   | EPCO      and |   |   | Total     |   |
|--------------------------------|--------|--------|----------|--------|--------|---------------|--------|--------|-----------|--------|
|                           |   |   | Energy   |   |   | other         |   |   | Time      |   |
| Named      Executive Officer   | Year   |   | Partners |   |   | affiliates    |   |   | Allocated |   |
| Richard      H. Bachmann (CEO) | 2009   |   |     | 20%    |   |          |   | 80%    |      |   |   | 100% |   |
|                           | 2008   |   |     | 25%    |   |          |   | 75%    |      |   |   | 100% |   |
|                           | 2007   |   |     | 12%    |   |          |   | 88%    |      |   |   | 100% |   |
|                           |   |   |     |   |   |          |   |   |      |   |   |   |   |
| W.      Randall Fowler (CFO)   | 2009   |   |     | 11%    |   |          |   | 89%    |      |   |   | 100% |   |
|                           | 2008   |   |     | 12%    |   |          |   | 88%    |      |   |   | 100% |   |
|                           | 2007   |   |     | 5%     |   |          |   | 95%    |      |   |   | 100% |   |
|                           |   |   |     |   |   |          |   |   |      |   |   |   |   |
| A.      James Teague           | 2009   |   |     | 25%    |   |          |   | 75%    |      |   |   | 100% |   |
|                           |   |   |     |   |   |          |   |   |      |   |   |   |   |
| William      Ordemann          | 2009   |   |     | 16%    |   |          |   | 84%    |      |   |   | 100% |   |
|                           | 2008   |   |     | 4%     |   |          |   | 96%    |      |   |   | 100% |   |
|                           |   |   |     |   |   |          |   |   |      |   |   |   |   |
| Michael      J. Knesek         | 2009   |   |     | 16%    |   |          |   | 84%    |      |   |   | 100% |   |
|                           | 2008   |   |     | 20%    |   |          |   | 80%    |      |   |   | 100% |   |
|                           | 2007   |   |     | 8%     |   |          |   | 92%    |      |   |   | 100% |   |

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| §   | Annual      cash base salary; |
|--------------------|-------------------------------|

| §   | Discretionary      annual cash bonus awards; |
|--------------------|----------------------------------------------|

| §   | Awards      under long-term incentive arrangements;and |
|--------------------|--------------------------------------------------------|

| §   | Other      compensation, including very limited  perquisites. |
|--------------------|---------------------------------------------------------------|

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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |    |   |                                |   |   |          |   |   | Grant         |   |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------|--------|-------------------------------------|--------|--------|---------------|--------|--------|---------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |    |   |                                |   |   |          |   |   |          |   |   | Exercise |   |   | Date      Fair |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |    |   |                                |   |   | or      Base  |   |   | Value      of |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |    |   | Estimated      Future Payouts Under |   |   | Price      of |   |   | Unit      and |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |    |   | Equity      Incentive Plan Awards   |   |   | Option        |   |   | Option        |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | Grant   |   | Threshold                           |   |   | Target        |   |   | Maximum       |   |   | Awards |   |   | Awards |   |
| Name                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | Date    |   |                                | (#)    |   |          |   | (#)    |          |   |   | (#) |   |   | ($/Unit) |   |   | ($) (1) |   |
| Restricted unit      awards:  (2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |    |   |                                |   |   |          |   |   |          |   |   |   |   |   |   |   |   |   |   |
|    Richard      H. Bachmann (CEO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | 5/6/09  |   |                                | --     |   |          |   | 37,400 |          |   |   | -- |   |   |   | -- |   |   | $ | 186,402 |   |
|    W.      Randall Fowler (CFO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 5/6/09  |   |                                | --     |   |          |   | 34,000 |          |   |   | -- |   |   |   | -- |   |   |   | 90,024 |   |
|    A.      James Teague                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | 5/6/09  |   |                                | --     |   |          |   | 37,400 |          |   |   | -- |   |   |   | -- |   |   |   | 233,002 |   |
|    William      Ordemann                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | 5/6/09  |   |                                | --     |   |          |   | 30,000 |          |   |   | -- |   |   |   | -- |   |   |   | 119,616 |   |
|    Michael      J. Knesek                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 5/6/09  |   |                                | --     |   |          |   | 12,500 |          |   |   | -- |   |   |   | -- |   |   |   | 50,619 |   |
| Unit option awards:      (3)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |    |   |                                |   |   |          |   |   |          |   |   |   |   |   |   |   |   |   |   |   |   |
|    Richard      H. Bachmann (CEO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | 2/19/09 |   |                                | --     |   |          |   | 60,000 |          |   |   | -- |   |   | $ | 22.06 |   |   |   | 79,560 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | 5/6/09  |   |                                | --     |   |          |   | 60,000 |          |   |   | -- |   |   |   | 24.92 |   |   |   | 53,250 |   |
|    W.      Randall Fowler (CFO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 2/19/09 |   |                                | --     |   |          |   | 52,500 |          |   |   | -- |   |   |   | 22.06 |   |   |   | 36,983 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | 5/6/09  |   |                                | --     |   |          |   | 60,000 |          |   |   | -- |   |   |   | 24.92 |   |   |   | 28,433 |   |
|    A.      James Teague                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | 2/19/09 |   |                                | --     |   |          |   | 60,000 |          |   |   | -- |   |   |   | 22.06 |   |   |   | 99,450 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | 5/6/09  |   |                                | --     |   |          |   | 60,000 |          |   |   | -- |   |   |   | 24.92 |   |   |   | 66,900 |   |
|    William      Ordemann                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | 2/19/09 |   |                                | --     |   |          |   | 45,000 |          |   |   | -- |   |   |   | 22.06 |   |   |   | 47,736 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | 5/6/09  |   |                                | --     |   |          |   | 60,000 |          |   |   | -- |   |   |   | 24.92 |   |   |   | 42,816 |   |
|    Michael      J. Knesek                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 2/19/09 |   |                                | --     |   |          |   | 30,000 |          |   |   | -- |   |   |   | 22.06 |   |   |   | 32,321 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | 5/6/09  |   |                                | --     |   |          |   | 30,000 |          |   |   | -- |   |   |   | 24.92 |   |   |   | 21,743 |   |
| Profits interest awards:      (4)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |    |   |                                |   |   |          |   |   |          |   |   |   |   |   |   |   |   |   |   |   |   |
|    Richard      H. Bachmann (CEO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | 12/2/09 |   |                                | --     |   |          |   | --     |          |   |   | -- |   |   |   | -- |   |   |   | 364,465 |   |
|    W.      Randall Fowler (CFO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 12/2/09 |   |                                | --     |   |          |   | --     |          |   |   | -- |   |   |   | -- |   |   |   | 172,660 |   |
|    A.      James Teague                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | 12/2/09 |   |                                | --     |   |          |   | --     |          |   |   | -- |   |   |   | -- |   |   |   | 378,394 |   |
|    William      Ordemann                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | 12/2/09 |   |                                | --     |   |          |   | --     |          |   |   | -- |   |   |   | -- |   |   |   | 143,303 |   |
|    Michael      J. Knesek                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 12/2/09 |   |                                | --     |   |          |   | --     |          |   |   | -- |   |   |   | -- |   |   |   | 108,377 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |    |   |                                |   |   |          |   |   |          |   |   |   |   |   |   |   |   |   |   |   |   |
| (1)        Amounts      presented reflect that portion of grant date fair value allocable to us      based on the average percentage of time each named executive officer spent      on our consolidated business activities during 2009. Based on current      allocations, we estimate that the consolidated compensation expense we      record for each named executive officer with respect to these awards will      equal these amounts over the vesting period.(2)        Awards      granted during 2009 were made under the Enterprise Products 1998 Long-Term      Incentive Plan (“1998 Plan”).(3)        Awards      granted during 2009 were made under the Amended and Restated 2008      Enterprise Products Long-Term Incentive Plan (“2008 Plan”).(4)        Awards      represent each named executive officer’s share of the aggregate      incremental fair value resulting from the extension of the liquidation      date (a material modification of the underlying awards) of each Employee      Partnership to February 2016. |    |

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|                           |   | Percentage      Ownership of Class B Interests |   |
|--------------------------------|--------|------------------------------------------------|--------|
|                           |   | EPE                                            |   |   | EPE |   |   | Enterprise |   |   | EPCO |   |
| Named      Executive Officer   |   | Unit      I                                    |   |   | Unit      III |   |   | Unit |   |   | Unit |   |
| Richard      H. Bachmann (CEO) |   |                                           | 9.3%   |   |   |   | 8.9% |   |   |   | 10.3% |   |   |   | 20.0% |   |
| W.      Randall Fowler (CFO)   |   |                                           | 6.2%   |   |   |   | 8.9% |   |   |   | 8.2% |   |   |   | 20.0% |   |
| A.      James Teague           |   |                                           | 6.2%   |   |   |   | 7.4% |   |   |   | 10.3% |   |   |   | 20.0% |   |
| William      Ordemann          |   |                                           | 3.1%   |   |   |   | 5.2% |   |   |   | 8.2% |   |   |   | -- |   |
| Michael      J. Knesek         |   |                                           | 3.1%   |   |   |   | 3.7% |   |   |   | 5.1% |   |   |   | -- |   |

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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |             |   | Option      Awards |   |   | Unit      Awards |   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------|--------|--------------------|--------|--------|------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |             |   | Number      of     |   |   | Number      of   |   |   |   |   |   |   |   |   |   |   |   | Market |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |             |   | Units              |   |   | Units            |   |   |   |   |   |   |   |   | Number |   |   | Value |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |             |   | Underlying         |   |   | Underlying       |   |   | Option |   |   |   |   |   | of      Units |   |   | of      Units |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |             |   | Options            |   |   | Options          |   |   | Exercise |   |   | Option |   |   | That      Have |   |   | That      Have |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | Vesting          |   | Exercisable        |   |   | Unexercisable    |   |   | Price |   |   | Expiration |   |   | Not      Vested |   |   | Not      Vested |   |
| Name                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | Date             |   |               | (#)    |   |             |   | (#) |   |   | ($/Unit) |   |   | Date |   |   |   | (#)(2) |   |   | ($)(3) |   |
| Restricted      unit awards:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |             |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   Richard      H. Bachmann (CEO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | Various      (1) |   |               | --     |   |             |   | -- |   |   |   | -- |   |   |   | -- |   |   |   | 104,000 |   |   | $ | 3,266,640 |   |
|   W.      Randall Fowler (CFO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | Various      (1) |   |               | --     |   |             |   | -- |   |   |   | -- |   |   |   | -- |   |   |   | 91,100 |   |   |   | 2,861,451 |   |
|   A.      James Teague                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | Various      (1) |   |               | --     |   |             |   | -- |   |   |   | -- |   |   |   | -- |   |   |   | 104,000 |   |   |   | 3,266,640 |   |
|   William      Ordemann                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | Various      (1) |   |               | --     |   |             |   | -- |   |   |   | -- |   |   |   | -- |   |   |   | 86,100 |   |   |   | 2,704,401 |   |
|   Michael      J. Knesek                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | Various      (1) |   |               | --     |   |             |   | -- |   |   |   | -- |   |   |   | -- |   |   |   | 36,300 |   |   |   | 1,140,183 |   |
| Unit      option awards:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |             |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|    Richard      H. Bachmann:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |             |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|        August      4, 2005 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 8/04/09          |   |               | 35,000 |   |             |   | -- |   |   | $ | 26.47 |   |   | 8/04/15 |   |   |   | -- |   |   |   | -- |   |
|        May      1, 2006 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 5/01/10          |   |               | --     |   |             |   | 40,000 |   |   |   | 24.85 |   |   | 5/01/16 |   |   |   | -- |   |   |   | -- |   |
|        May      29, 2007 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 5/29/11          |   |               | --     |   |             |   | 60,000 |   |   |   | 30.96 |   |   | 12/31/12 |   |   |   | -- |   |   |   | -- |   |
|        May      22, 2008 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 5/22/12          |   |               | --     |   |             |   | 60,000 |   |   |   | 30.93 |   |   | 12/31/13 |   |   |   | -- |   |   |   | -- |   |
|        February      19, 2009 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | 2/19/13          |   |               | --     |   |             |   | 60,000 |   |   |   | 22.06 |   |   | 12/31/14 |   |   |   | -- |   |   |   | -- |   |
|        May      6, 2009 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 5/6/13           |   |               | --     |   |             |   | 60,000 |   |   |   | 24.92 |   |   | 12/31/14 |   |   |   | -- |   |   |   | -- |   |
|    W.      Randall Fowler (CFO):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |             |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|        August      4, 2005 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 8/04/09          |   |               | 25,000 |   |             |   | -- |   |   |   | 26.47 |   |   | 8/04/15 |   |   |   | -- |   |   |   | -- |   |
|        May      1, 2006 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 5/01/10          |   |               | --     |   |             |   | 40,000 |   |   |   | 24.85 |   |   | 5/01/16 |   |   |   | -- |   |   |   | -- |   |
|        May      29, 2007 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 5/29/11          |   |               | --     |   |             |   | 45,000 |   |   |   | 30.96 |   |   | 12/31/12 |   |   |   | -- |   |   |   | -- |   |
|        May      22, 2008 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 5/22/12          |   |               | --     |   |             |   | 60,000 |   |   |   | 30.93 |   |   | 12/31/13 |   |   |   | -- |   |   |   | -- |   |
|        February      19, 2009 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | 2/19/13          |   |               | --     |   |             |   | 52,500 |   |   |   | 22.06 |   |   | 12/31/14 |   |   |   | -- |   |   |   | -- |   |
|        May      6, 2009 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 5/6/13           |   |               | --     |   |             |   | 60,000 |   |   |   | 24.92 |   |   | 12/31/14 |   |   |   | -- |   |   |   | -- |   |
|   A.      James Teague:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |             |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|        August      4, 2005 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 8/04/09          |   |               | 35,000 |   |             |   | -- |   |   |   | 26.47 |   |   | 8/04/15 |   |   |   | -- |   |   |   | -- |   |
|        May      1, 2006 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 5/01/10          |   |               | --     |   |             |   | 40,000 |   |   |   | 24.85 |   |   | 5/01/16 |   |   |   | -- |   |   |   | -- |   |
|        May      29, 2007 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 5/29/11          |   |               | --     |   |             |   | 60,000 |   |   |   | 30.96 |   |   | 12/31/12 |   |   |   | -- |   |   |   | -- |   |
|        May      22, 2008 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 5/22/12          |   |               | --     |   |             |   | 60,000 |   |   |   | 30.93 |   |   | 12/31/13 |   |   |   | -- |   |   |   | -- |   |
|        February      19, 2009 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | 2/19/13          |   |               | --     |   |             |   | 60,000 |   |   |   | 22.06 |   |   | 12/31/14 |   |   |   | -- |   |   |   | -- |   |
|        May      6, 2009 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 5/6/13           |   |               | --     |   |             |   | 60,000 |   |   |   | 24.92 |   |   | 12/31/14 |   |   |   | -- |   |   |   | -- |   |
|    William      Ordemann:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |             |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|        May      10, 2004 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 5/10/08          |   |               | 25,000 |   |             |   | -- |   |   |   | 20.00 |   |   | 5/10/14 |   |   |   | -- |   |   |   | -- |   |
|        August      4, 2005 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 8/04/09          |   |               | 25,000 |   |             |   | -- |   |   |   | 26.47 |   |   | 8/04/15 |   |   |   | -- |   |   |   | -- |   |
|        May      1, 2006 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 5/01/10          |   |               | --     |   |             |   | 30,000 |   |   |   | 24.85 |   |   | 5/01/16 |   |   |   | -- |   |   |   | -- |   |
|        May      29, 2007 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 5/29/11          |   |               | --     |   |             |   | 30,000 |   |   |   | 30.96 |   |   | 12/31/12 |   |   |   | -- |   |   |   | -- |   |
|        May      22, 2008 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 5/22/12          |   |               | --     |   |             |   | 60,000 |   |   |   | 30.93 |   |   | 12/31/13 |   |   |   | -- |   |   |   | -- |   |
|        February      19, 2009 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | 2/19/13          |   |               | --     |   |             |   | 45,000 |   |   |   | 22.06 |   |   | 12/31/14 |   |   |   | -- |   |   |   | -- |   |
|        May      6, 2009 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 5/6/13           |   |               | --     |   |             |   | 60,000 |   |   |   | 24.92 |   |   | 12/31/14 |   |   |   | -- |   |   |   | -- |   |
|    Michael      J. Knesek:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |             |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|        August      4, 2005 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 8/04/09          |   |               | 15,000 |   |             |   | -- |   |   |   | 26.47 |   |   | 8/04/15 |   |   |   | -- |   |   |   | -- |   |
|        May      1, 2006 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 5/01/10          |   |               | --     |   |             |   | 30,000 |   |   |   | 24.85 |   |   | 5/01/16 |   |   |   | -- |   |   |   | -- |   |
|        May      29, 2007 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 5/29/11          |   |               | --     |   |             |   | 30,000 |   |   |   | 30.96 |   |   | 12/31/12 |   |   |   | -- |   |   |   | -- |   |
|        May      22, 2008 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 5/22/12          |   |               | --     |   |             |   | 30,000 |   |   |   | 30.93 |   |   | 12/31/13 |   |   |   | -- |   |   |   | -- |   |
|        February      19, 2009 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | 2/19/13          |   |               | --     |   |             |   | 30,000 |   |   |   | 22.06 |   |   | 12/31/14 |   |   |   | -- |   |   |   | -- |   |
|        May      6, 2009 option grant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 5/6/13           |   |               | --     |   |             |   | 30,000 |   |   |   | 24.92 |   |   | 12/31/14 |   |   |   | -- |   |   |   | -- |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |             |   |               |   |   |             |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| (1)        Of      the 421,500 restricted unit awards presented in the table, 50,400 vest in      2010, 98,800 vest in 2011, 121,000 vest in 2012 and 151,300 vest in      2013.(2)        Amounts      represent the total number of restricted unit awards granted to each named      executive officer.(3)        Amounts      derived by multiplying the total number of restricted unit awards      outstanding for each named executive officer by the closing price of      Enterprise Products Partners’ common units at December 31, 2009 of $31.41      per unit. |             |

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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |     |   | Option      Awards |   |   | Unit      Awards |     |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------|--------|--------------------|--------|--------|------------------|----------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |     |   | Number      of     |   |   |             |     |   |   |   |   |   |   |   | Market |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |     |   | Units              |   |   |             |     |   |   |   |   | Number |   |   | Value |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |     |   | Underlying         |   |   | Option           |     |   |   |   |   | of      Units |   |   | of      Units |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |     |   | Options            |   |   | Exercise         |     |   | Option |   |   | That      Have |   |   | That      Have |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | Vesting  |   | Unexercisable      |   |   | Price            |     |   | Expiration |   |   | Not      Vested |   |   | Not      Vested |   |
| Name                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | Date (1) |   |               | (#)    |   |             | ($/Unit) |   |   | Date |   |   |   | (#) |   |   | ($) |   |
| EPE      Unit I:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |   |               |   |   |             |     |   |   |   |   |   |   |   |   |   |   |   |
| Richard      H. Bachmann (CEO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | 8/23/10  |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   | $ | 1,651,767 |   |
| W.      Randall Fowler (CFO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 8/23/10  |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   |   | 1,109,396 |   |
| A.      James Teague                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | 8/23/10  |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   |   | 1,109,396 |   |
| William      Ordemann                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | 8/23/10  |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   |   | 554,698 |   |
| Michael      J. Knesek                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | 8/23/10  |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   |   | 554,698 |   |
| Enterprise      Unit:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |     |   |               |   |   |             |     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Richard      H. Bachmann (CEO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | 2/20/14  |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   |   | 654,863 |   |
| W.      Randall Fowler (CFO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 2/20/14  |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   |   | 523,890 |   |
| A.      James Teague                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | 2/20/14  |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   |   | 654,863 |   |
| William      Ordemann                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | 2/20/14  |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   |   | 523,890 |   |
| Michael      J. Knesek                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | 2/20/14  |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   |   | 327,431 |   |
| EPCO      Unit:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |     |   |               |   |   |             |     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Richard      H. Bachmann (CEO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | 11/13/13 |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   |   | 47,506 |   |
| W.      Randall Fowler (CFO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 11/13/13 |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   |   | 47,506 |   |
| A.      James Teague                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | 11/13/13 |   |               | --     |   |             |     | -- |   |   |   | -- |   |   |   | -- |   |   |   | 47,506 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |     |   |               |   |   |             |     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| (1)        In December 2009, the partnership agreements of each Employee      Partnership were amended to provide that the expected liquidation date for      each Employee Partnership be extended to February 2016. The      extensions of the expected liquidation dates are intended to align the      interests of the employee partners of each Employee Partnership with the      long-term interests of EPCO and other unitholders by providing an      incentive to such employees to devote themselves to maximizing the value      of the underlying publicly traded partnerships over an extended period of      time. |     |

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | Option      Awards |   |   | Unit      Awards |    |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------|--------|--------|------------------|---------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | Number      of     |   |   | Gross            |    |   | Number      of |   |   | Gross |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | Units              |   |   | Value            |    |   | Units |   |   | Value |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | Acquired      on   |   |   | Realized      on |    |   | Acquired      on |   |   | Realized      on |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | Exercise           |   |   | Exercise         |    |   | Vesting |   |   | Vesting |   |
| Name                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |               | (#)    |   |             | ($) (1) |   |   |   | (#) |   |   | ($) (2) |   |
|   Richard      H. Bachmann (CEO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |               | 35,000 |   |             | $       | 330,400 |   |   |   | 10,000 |   |   | $ | 280,500 |   |
|   W.      Randall Fowler (CFO)                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |               | 10,000 |   |             |    | 93,200 |   |   |   | 6,000 |   |   |   | 168,300 |   |
|   A.      James Teague                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |               | 35,000 |   |             |    | 326,200 |   |   |   | 10,000 |   |   |   | 280,500 |   |
|   William      Ordemann                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |               | --     |   |             |    | -- |   |   |   | 16,000 |   |   |   | 451,900 |   |
|   Michael      J. Knesek                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |               | 10,000 |   |             |    | 93,200 |   |   |   | 5,000 |   |   |   | 140,250 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |               |   |   |             |    |   |   |   |   |   |   |   |   |   |   |
| (1)        Amount      determined by multiplying the number of units acquired on exercise of the      options by the difference between the closing price of Enterprise Products      Partners’ common units on the date of exercise less the exercise      price.(2)        Amount      determined by multiplying the number of restricted unit awards that vested      during 2009 by the closing price of Enterprise Products Partners’ common      units on the date of vesting. |   |

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|                           |   | Fees      Earned |   |
|--------------------------------|--------|------------------|--------|
|                           |   | or      Paid     |   |
|                           |   | in      Cash     |   |
| Name                           |   | ($)              |   |
| William      A. Bruckmann, III |   | $                | 90,000 |   |
| Joe      D. Havens             |   | $                | 75,000 |   |
| Larry      J. Casey            |   | $                | 75,000 |   |

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| §   | Each      independent director will receive $75,000 in cash  annually; |
|--------------------|------------------------------------------------------------------------|

| §   | If      the individual serves as chairman of a committee of the Board of      Directors, then he will receive an additional $15,000 in cash      annually; |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Each      independent director will receive a meeting fee of $1,500 in cash for each      meeting of the Board attended. In addition, each independent director will      receive a meeting fee of $1,500 in cash for each meeting of a duly      appointed committee of the Board attended, provided that he is duly      elected or appointed to the committee;and |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Each      independent director shall receive an annual grant of our common units      having a fair market value, based on the closing price of our common units      on the trading day immediately preceding the date of grant, of      $40,000. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

Item 12.  Security Ownership of CertainBeneficial Owners and Management and Related

|                                                                                                                                                                                                                                                                                         |                                        |   | Amount      and |                |   |          |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------|--------|-----------------|---------------------|--------|---------------|--------|
|                                                                                                                                                                                                                                                                                         |                                        |   | Nature      of  |                |   |          |   |
| Title      of                                                                                                                                                                                                                                                                                | Name      and Address                       |   | Beneficial      |                |   | Percent       |   |
| Class                                                                                                                                                                                                                                                                                        | of      Beneficial Owner                    |   | Ownership       |                |   | of      Class |   |
| Common      units                                                                                                                                                                                                                                                                            | Dan      L. Duncan                          |   |            | 34,368,640      (1) |   |          |   | 59.6% |   |
|                                                                                                                                                                                                                                                                                         | 1100      Louisiana Street, 10th      Floor |   |            |                |   |          |   |   |   |
|                                                                                                                                                                                                                                                                                         | Houston,      Texas 77002                   |   |            |                |   |          |   |   |   |
|                                                                                                                                                                                                                                                                                         |                                        |   |            |                |   |          |   |   |   |
| (1)        For      a detailed listing of ownership amounts that comprise Mr. Duncan’s total      beneficial ownership of our common units, see the table presented in the      following section, “Security Ownership of Management,” within this Item      12. |                                        |

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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   | Duncan      Energy Partners L.P.Common      Units |       |   | Enterprise      Products Partners L.P.Common      Units |   |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|---------------------------------------------------|------------|--------|---------------------------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   | Amount      and                                   |       |   |                                                    |   |   | Amount      and |   |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   | Nature      Of                                    |       |   |                                                    |   |   | Nature      Of |   |   |   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   | Beneficial                                        |       |   | Percent      of                                         |   |   | Beneficial |   |   | Percent      of |   |
| Name      of Beneficial Owner                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   | Ownership                                         |       |   | Class                                                   |   |   | Ownership |   |   | Class |   |
| Dan      L. Duncan:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |                                              |       |   |                                                    |   |   |   |   |   |   |   |
|    Units      owned by EPCO:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |                                              |       |   |                                                    |   |   |   |   |   |   |   |
|        Through      DFI Delaware Holdings, L.P.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |                                              | --         |   |                                                    |   | -- |   |   |   | 130,506,142 |   |   |   | 21.5% |   |
|        Through      Duncan Family Interests, Inc.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                                              | --         |   |                                                    |   | -- |   |   |   | 6,775,839 |   |   |   |        1.1% |   |
|        Through      DFI GP Holdings L.P.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |                                              | --         |   |                                                    |   | -- |   |   |   | 3,100,000 |   |   |   |           * |   |
|        Through      Enterprise GP Holdings L.P.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |                                              | --         |   |                                                    |   | -- |   |   |   | 21,167,783 |   |   |   |        3.5% |   |
|        Through      EPCO Holdings, Inc.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                                              | 99,453     |   |                                                    |   | * |   |   |   | 6,182,354 |   |   |   |        1.0% |   |
|    Units      owned by EPO                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |                                              | 33,783,587 |   |                                                    |   | 58.6% |   |   |   | -- |   |   |   |          -- |   |
|    Units      owned by DD Securities LLC                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                                              | 103,100    |   |                                                    |   | * |   |   |   | 1,392,686 |   |   |   |           * |   |
|    Units      owned by  Employee Partnerships (1)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                                              | --         |   |                                                    |   | -- |   |   |   | 1,623,654 |   |   |   |           * |   |
|    Units      owned by family trusts (2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                                              | --         |   |                                                    |   | -- |   |   |   | 14,624,718 |   |   |   |        2.4% |   |
|    Units      owned personally                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |                                              | 382,500    |   |                                                    |   | * |   |   |   | 1,470,006 |   |   |   |           * |   |
|         Total      for Dan L. Duncan                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |                                              | 34,368,640 |   |                                                    |   | 59.6% |   |   |   | 186,843,182 |   |   |   | 30.8% |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                                              |       |   |                                                    |   |   |   |   |   |   |   |   |   |   |   |
| Richard      H. Bachmann (CEO) (3,4)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                                              | 14,172     |   |                                                    |   | * |   |   |   | 233,238 |   |   |   |           * |   |
| W.      Randall Fowler (CFO) (3,5)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |                                              | 2,000      |   |                                                    |   | * |   |   |   | 153,674 |   |   |   |           * |   |
| A.      James Teague (3,6)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                                              | 6,000      |   |                                                    |   | * |   |   |   | 295,228 |   |   |   |           * |   |
| Michael      A. Creel  (7)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                                              | 7,500      |   |                                                    |   | * |   |   |   | 248,868 |   |   |   |           * |   |
| Dr.      Ralph S. Cunningham                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |                                              | 3,000      |   |                                                    |   | * |   |   |   | 104,739 |   |   |   |           * |   |
| Larry      J. Casey                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |                                              | 10,900     |   |                                                    |   | * |   |   |   | 6,600 |   |   |   |           * |   |
| Joe      D. Havens                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |                                              | 11,664     |   |                                                    |   | * |   |   |   | 232,723 |   |   |   |           * |   |
| William      A. Bruckmann, III                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                                              | 4,500      |   |                                                    |   | * |   |   |   | 4,800 |   |   |   |           * |   |
| Richard      S. Snell                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |                                              | 1,000      |   |                                                    |   | * |   |   |   | 2,064 |   |   |   |           * |   |
| William      Ordemann (3)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |                                              | 3,810      |   |                                                    |   | * |   |   |   | 117,119 |   |   |   |           * |   |
| Michael      J. Knesek  (3,8)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                                              | 1,340      |   |                                                    |   | * |   |   |   | 67,853 |   |   |   |           * |   |
| All      current directors and executive officers  of      DEP GP, as a group (13 individuals in total) (9)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |                                              | 34,436,726 |   |                                                    |   | 59.7% |   |   |   | 188,330,298 |   |   |   | 31.1% |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                                              |       |   |                                                    |   |   |   |   |   |   |   |   |   |   |   |
|  *          Represents a beneficial ownership of less than 1% of class                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |
| (1)        As      a result of EPCO’s ownership of the general partners of the Employee      Partnerships, Mr. Duncan is deemed beneficial owner of the limited partner      interests held by these entities.(2)        Mr.      Duncan is deemed beneficial owner of the limited partner interests held by      certain family trusts, the beneficiaries of which are shareholders of      EPCO.(3)        These      individuals are named executive officers.(4)        The      number of Enterprise Products Partners’ common units presented for Mr.      Bachmann includes 35,000 common unit options that are exercisable within      60 days of the filing date of this report.(5)        The      number of Enterprise Products Partners’ common units presented for Mr.      Fowler includes 25,000 common unit options that are exercisable within 60      days of the filing date of this report.(6)        The      number of Enterprise Products Partners’ common units presented for Mr.      Teague includes 35,000 common unit options that are exercisable within 60      days of the filing date of this report.(7)        The      number of Enterprise Products Partners’ common units presented for Mr.      Creel includes 35,000 common unit options that are exercisable within 60      days of the filing date of this report.(8)        The      number of Enterprise Products Partners’ common units presented for Mr.      Knesek includes 709 common units held by a family member for which he has      disclaimed beneficial ownership and 15,000 common unit options that are      exercisable within 60 days of the filing date of this report.(9)        Cumulatively,      this group’s beneficial ownership amount includes 145,000 options to      acquire Enterprise Products Partners common units that were issued under      the 1998 Plan. These options vested in prior periods and remain      exercisable within 60 days of the filing date of this annual      report. |   |

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| §   | each      non-management director of our general partner is required to own our      common units having an aggregate value (as defined in the guidelines) of      three times the dollar amount of such non-management director’s aggregate      annual cash retainer for service on the Board paid for the most recently      completed calendar year; and |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | each      executive officer of our general partner is required to own our common      units having an aggregate value (as defined in the guidelines) of three      times the dollar amount of such executive officer’s aggregate annual base      salary for the most recently completed calendar year; provided, however,      that the value of any units representing limited partnership interests in      Enterprise Products Partners or Enterprise GP Holdings L.P. (each of which      we refer to as an “Affiliated MLP”), owned by an executive officer of our      general partner who is also an executive officer of the general partner of      such Affiliated MLP, shall be counted toward the equity ownership      requirements set forth above. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

Item 13.  Certain Relationships and RelatedTransactions, and Director Independence.

| §   | for      which Board approval is required by our management authorization policy,      as such policy may be amended from time totime; |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------|

| §   | where      an officer or director of the general partner or any of our subsidiaries      is a party, without regard to the size of the  transaction; |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | when      requested to do so by management or the Board;  or |
|--------------------|--------------------------------------------------------------|

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| §   | pursuant      to our partnership agreement or the limited liability company agreement of      the general partner, as such agreements may be amended from time to      time. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | asset      purchase or sale transactions; |
|--------------------|-------------------------------------------|

| §   | capital      expenditures; and |
|--------------------|--------------------------------|

| §   | purchase      orders and operating and administrative expenses not governed by the      ASA. |
|--------------------|----------------------------------------------------------------------------------------------|

| §   | If      a business opportunity to acquire “equity securities” (as defined      below) is      presented to the EPCO Group, or to Enterprise Products Partners (including      EPGP), Enterprise GP Holdings (including EPE Holdings), or Duncan Energy      Partners (including DEP GP), then Enterprise GP Holdings will have the      first right to pursue such opportunity.  The term “equity      securities” is defined toinclude: |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | general      partner interests (or securities which have characteristics similar to      general partner interests) or interests in “persons” that own or control      such general partner or similar interests (collectively, “GP Interests”)      and securities convertible, exercisable, exchangeable or otherwise      representing ownership or control of such GP Interests;  and |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| §   | incentive      distribution rights and limited partner interests (or securities which      have characteristics similar to incentive distribution rights or limited      partner interests) in publicly traded partnerships or interests in      “persons” that own or control such limited partner or similar interests      (collectively, “non-GP Interests”); provided that such non-GP Interests      are associated with GP Interests and are owned by the owners of GP      Interests or their respectiveaffiliates. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|    | Enterprise      GP Holdings will be presumed to want to acquire the equity securities      until such time as EPE Holdings advises the EPCO Group, EPGP and DEP GP      that it has abandoned the pursuit of such business      opportunity.  In the event that the purchase price of the equity      securities is reasonably likely to equal or exceed $100 million, the      decision to decline the acquisition will be made by the chief executive      officer of EPE Holdings after consultation with and subject to the      approval of the ACG Committee of EPE Holdings.  If the purchase      price is reasonably likely to be less than $100 million, the chief      executive officer of EPE Holdings may make the determination to decline      the acquisition without consulting the ACG Committee of EPE      Holdings. |
|--------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|    | In      the event that Enterprise GP Holdings abandons the acquisition and so      notifies the EPCO Group, and EPGP and DEP GP, then Enterprise Products      Partners will have the second right to pursue such      acquisition.  Enterprise Products Partners will be presumed to      want to acquire the equity securities until such time as EPGP advises the      EPCO Group and DEP GP that Enterprise Products Partners has abandoned the      pursuit of such acquisition.  In determining whether or not to      pursue the acquisition, Enterprise Products Partners will follow the same      procedures applicable to Enterprise GP Holdings, as described above but      utilizing EPGP’s Chief Executive Officer and ACG      Committee. |
|--------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|    | In      its sole discretion, Enterprise Products Partners may affirmatively direct      such acquisition opportunity to Duncan Energy Partners.  In the      event this occurs, Duncan Energy Partners may pursue such      acquisition. |
|--------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|    | In      the event Enterprise Products Partners abandons the acquisition      opportunity for the equity securities and so notifies the EPCO Group and      DEP GP, the EPCO Group may pursue the acquisition without any further      obligation to any other party or offer such opportunity to other      affiliates. |
|--------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | If      any business opportunity not covered by the preceding bullet point (i.e.,      not involving “equity securities”) is presented to the EPCO Group, or to      Enterprise Products Partners (including EPGP), Enterprise GP Holdings      (including EPE Holdings), or Duncan Energy Partners (including DEP GP),      Enterprise Products Partners will have the first right to pursue such      opportunity either for itself or, if desired by Enterprise Products      Partners in its sole discretion, for the benefit of Duncan Energy      Partners.  It will be presumed that Enterprise Products Partners      will pursue the business opportunity until such time as its general      partner advises the EPCO Group, EPE Holdings and DEP GP that it has      abandoned the pursuit of such business  opportunity. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|    | In      the event the purchase price or cost associated with the business      opportunity is reasonably likely to equal or exceed $100 million, any      decision to decline the business opportunity will be made by the chief      executive officer of EPGP after consultation with and subject to the      approval of the ACG Committee of EPGP.  If the purchase price or      cost is reasonably likely to be less than $100 million, the chief      executive officer of EPGP may make the determination to decline the      business opportunity without consulting EPGP’s ACG      Committee. |
|--------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|    | In      its sole discretion, Enterprise Products Partners may affirmatively direct      such acquisition opportunity to Duncan Energy      Partners.  In      the event this occurs, Duncan Energy Partners may pursue such      acquisition.  |
|--------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|    | In      the event that Enterprise Products Partners abandons the business      opportunity for itself and Duncan Energy Partners and so notifies the EPCO      Group, EPE Holdings and DEP GP, Enterprise GP Holdings will have the      second right to pursue such business opportunity.  It will be      presumed that Enterprise GP Holdings will pursue such acquisition until      such time as its general partner declines such opportunity (in accordance      with the procedures described above for Enterprise Products Partners) and      advises the EPCO Group that it has abandoned the pursuit of such business      opportunity.  Should this occur, the EPCO Group may pursue the      business opportunity without any further obligation to any other party or      offer such opportunity to other  affiliates. |
|--------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | the      relative interests of any party to such conflict, agreement, transaction      or situation and the benefits and burdens relating to such      interest; |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | the      totality of the relationships between the parties involved (including      other transactions that may be particularly favorable or advantageous to      us); |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | any      customary or accepted industry practices and any customary or historical      dealings with a particular person; |
|--------------------|---------------------------------------------------------------------------------------------------------------------------|

| §   | any      applicable generally accepted accounting or engineering practices or      principles; |
|--------------------|------------------------------------------------------------------------------------------------|

| §   | the      relative cost of capital of the parties and the consequent rates of return      to the equity holders of the parties;and |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------|

| §   | such      additional factors as the ACG Committee determines in its sole discretion      to be relevant, reasonable or appropriate under the      circumstances. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | assessing      the business rationale for thetransaction; |
|--------------------|-----------------------------------------------------------|

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| §   | reviewing      the terms and conditions of the proposed transaction, including      consideration and financing requirements, if  any; |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------|

| §   | assessing      the effect of the transaction on our earnings and distributable cash flow      per unit, and on our results of operations, financial condition,      properties or prospects; |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | conducting      due diligence, including by interviews and discussions with management and      other representatives and by reviewing transaction materials and findings      of management and otherrepresentatives; |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | considering      the relative advantages and disadvantages of the transactions to the      parties; |
|--------------------|-----------------------------------------------------------------------------------------------------|

| §   | engaging      third-party financial advisors to provide financial advice and assistance,      including by providing fairness opinions if  requested; |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | engaging      legal advisors; and |
|--------------------|-----------------------------------|

| §   | evaluating      and negotiating the transaction and recommending for approval or approving      the transaction, as the case maybe. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------|

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Item14.  PrincipalAccountant Fees and Services.

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   | For      The Year Ended December 31, |   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   | 2009                                 |   |   | 2008 |   |
| Audit      Fees (1)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | $                                    | 0.9    |   |   | $ | 1.0 |   |
| Audit-Related      Fees (2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                                 | --     |   |   |   | -- |   |
| Tax      Fees (3)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                                 | --     |   |   |   | 0.2 |   |
| All      Other Fees (4)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                                 | N/A    |   |   |   | N/A |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                                 |   |   |   |   |   |   |
| (1)        Audit      fees represent amounts billed for each of the years presented for      professional services rendered in connection with (i) the audit of our      annual financial statements and internal controls over financial      reporting, (ii) the review of our quarterly financial statements, or (iii)      those services normally provided in connection with statutory and      regulatory filings or engagements including comfort letters, consents and      other services related to SEC matters. This information is presented      as of the latest practicable date for this annual report.(2)        Audit-related      fees represent amounts we were billed in each of the years presented for      assurance and related services that are reasonably related to the      performance of the annual audit or quarterly reviews. This category      primarily includes services relating to internal control assessments and      accounting-related consulting.(3)        Tax      fees represent amounts we were billed in each of the years presented for      professional services rendered in connection with tax compliance, tax      advice, and tax planning. This category primarily includes services      relating to the preparation of unitholder annual K-1 statements and      partnership tax planning. In 2008, PricewaterhouseCoopers International      Limited was engaged to perform the majority of tax related      services.(4)        All      other fees represent amounts we were billed in each of the years presented      for services not classifiable under the other categories listed in the      table above. No such services were rendered by Deloitte & Touche      during the years ended December 31, 2009 and 2008. |   |

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PART IV

Item 15. Exhibitsand Financial Statement Schedules.

| (a)   | The      following documents are filed as a part of this annual    report: |
|-----------------|----------------------------------------------------------------------------|

| (1)   | Financial      Statements:  See Index to Consolidated Financial Statements on      page F-1 of this annual report for financial statements filed as part of      this annual report. |
|-----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (2)   | Financial      Statement Schedules:  All schedules have been omitted because      they are either not applicable, not required or the information called for      therein appears in the consolidated financial statements or notes      thereto. |
|-----------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (3)   | Exhibits. |
|-----------------|-----------|

| Exhibit      Number | Exhibit*                                                                                                                                                                                                                                                              |
|---------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 3.1                 | Certificate      of Limited Partnership of Duncan Energy Partners L.P. (incorporated by      reference to Exhibit 3.1 to Form S-1 Registration Statement (Reg. No.      333-138371) filed November 2, 2006).                                                          |
| 3.2                 | Amended      and Restated Agreement of Limited Partnership of Duncan Energy Partners      L.P., dated February 5, 2007 (incorporated by reference to Exhibit      3.1 to Form 8-K filed February 5, 2007).                                                       |
| 3.3                 | Amendment      No. 1 to the Amended and Restated Agreement of Limited Partnership of      Duncan Energy Partners L.P. dated December 27, 2007 (incorporated by      reference to Exhibit 3.1 to Form 8-K/A filed January 3,    2008).                            |
| 3.4                 | Amendment      No. 2 to the Amended and Restated Agreement of Limited Partnership of      Duncan Energy Partners L.P. dated November 6, 2008 (incorporated by      reference to Exhibit 3.4 to Form 10-Q filed November 10,      2008).                               |
| 3.5                 | Third      Amendment to the Amended and Restated Agreement of Limited Partnership of      Duncan Energy Partners L.P., dated December 8, 2008 (incorporated by      reference to Exhibit 3.1 to Form 8-K filed December 8,    2008).                                  |
| 3.6                 | Fourth      Amendment to the Amended and Restated Agreement of Limited Partnership of      Duncan Energy Partners L.P. dated June 15, 2009 (incorporated by reference      to Exhibit 3.1 to Form 8-K filed June 15, 2009).                                           |
| 3.7                 | Certificate      of Formation of DEP Holdings, LLC (incorporated by reference to Exhibit      3.3 to Form S-1 Registration Statement (Reg. No. 333-138371) filed      November 2, 2006).                                                                              |
| 3.8                 | Second      Amended and Restated Limited Liability Company Agreement of DEP Holdings,      LLC, dated May 3, 2007 (incorporated by reference to Exhibit 3.4 to Form      10-Q filed May 4, 2007).                                                                     |
| 3.9                 | First      Amendment to the Second Amended and Restated Limited Liability Company      Agreement of DEP Holdings, LLC dated November 6, 2008 (incorporated by      reference to Exhibit 3.8 to Form 10-Q filed November 10,      2008).                               |
| 3.10                | Certificate      of Formation of DEP OLPGP, LLC (incorporated by reference to Exhibit 3.5      to Form S-1 Registration Statement (Reg. No. 333-138371) filed November 2,      2006).                                                                                 |
| 3.11                | Amended      and Restated Limited Liability Company Agreement of DEP OLPGP, LLC, dated      January 19, 2007 (incorporated by reference to Exhibit 3.6 to Amendment      No. 3 to Form S-1 Registration Statement (Reg. No. 333-138371) filed      January 22, 2007). |
| 3.12                | Certificate      of Limited Partnership of DEP Operating Partnership, L.P. (incorporated by      reference to Exhibit 3.7 to Form S-1 Registration Statement (Reg. No.      333-138371) filed November 2, 2006).                                                      |
| 3.13                | Agreement      of Limited Partnership of DEP Operating Partnership, L.P., dated September      29, 2006 (incorporated by reference to Exhibit 3.8 to Amendment No. 1 to      Form S-1 Registration Statement (Reg. No. 333-138371) filed December 15,      2006).     |

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| 10.1***  | Amended      and Restated 2008 Enterprise Products Long-Term Incentive Plan (February      23, 2010) (incorporated by reference to Exhibit 10.7 to Form 8-K      filed by Enterprise Products Partners L.P. on February 26,      2010).                                                                      |
|----------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.2***  | Form      of Option Grant Award under the Amended and Restated 2008 Enterprise      Products  Long-Term Incentive Plan for awards issued before      February 23, 2010 (incorporated by reference to Exhibit 4.3 to      Form S-8 filed by Enterprise Products Partners L.P. on May 6,      2008). |
| 10.3***  | Amendment      to Form of Option Grant Award under the Amended and Restated 2008      Enterprise Products Long-Term Incentive Plan for awards issued before      February 23, 2010 (incorporated by reference to Exhibit 10.8 to Form 8-K      filed by Enterprise Products Partners L.P. on February 26,      2010).  |
| 10.4***  | Form      of Option Grant Award under the Amended and Restated 2008 Enterprise      Products  Long-Term Incentive Plan (incorporated by reference to      Exhibit 10.9 to Form 8-K filed by Enterprise Products Partners      L.P. on February 26, 2010).                                          |
| 10.5***  | Form      of Employee Restricted Unit Grant Award under the Amended and Restated      2008 Enterprise Products Long-Term Incentive Plan (incorporated by      reference to Exhibit 10.10 to Form 8-K filed by Enterprise Products      Partners L.P. on February 26, 2010).                                       |
| 10.6***  | Form      of Non-Employee Director Restricted Unit Grant Award under the Amended and      Restated 2008 Enterprise Products Long-Term Incentive Plan (incorporated      by reference to Exhibit 10.11 to Form 8-K filed by Enterprise Products      Partners L.P. on February 26, 2010).                               |
| 10.7***  | Enterprise      Products 1998 Long-Term Incentive Plan (Amended and Restated as of      February 23, 2010) (incorporated by reference to Exhibit10.1 to Form 8-K      filed by Enterprise Products Partners L.P. on February 26,      2010).                                                                           |
| 10.8***  | Form      of Option Grant Award under the Enterprise Products 1998 Long-Term      Incentive Plan for awards issued before May 7, 2008 (incorporated by      reference to Exhibit 10.2 to Form 10-Q filed by Enterprise      Products Partners L.P. on November 8, 2007).                                     |
| 10.9***  | Form      of Option Grant Award under the Enterprise Products 1998 Long-Term      Incentive Plan for awards issued on or after May 7, 2008 but before      February 23, 2010 (incorporated by reference to Exhibit 10.4 to      Form 10-Q filed by Enterprise Products Partners L.P. on May 12,      2008).  |
| 10.10*** | Amendment      to Form of Option Grant Award under the Enterprise Products 1998 Long-Term      Incentive Plan for awards issued before February 23, 2010 (incorporated by      reference to Exhibit 10.2 to Form 8-K filed by Enterprise      Products Partners L.P. on February 26, 2010).                  |
| 10.11*** | Form      of Option Grant Award under the Enterprise Products 1998 Long-Term      Incentive Plan (incorporated by reference to Exhibit 10.3 to      Form 8-K filed by Enterprise Products Partners L.P. on February 26,      2010).                                                                          |
| 10.12*** | Form      of Restricted Unit Grant Award under the Enterprise Products 1998      Long-Term Incentive Plan for awards issued before February 23, 2010      (incorporated by reference to Exhibit 10.3 to Form 10-Q filed by      Enterprise Products Partners L.P. on November 8, 2007).                                |
| 10.13*** | Amendment      to Form of Restricted Unit Grant Award under the Enterprise Products 1998      Long-Term Incentive Plan for awards issued before February 23, 2010      (incorporated by reference to Exhibit 10.4 to Form 8-K filed by Enterprise      Products Partners L.P. on February 26, 2010).                   |
| 10.14*** | Form      of Employee Restricted Unit Grant Award under the Enterprise Products 1998      Long-Term Incentive Plan (incorporated by reference to Exhibit 10.5 to      Form 8-K filed by Enterprise Products Partners L.P. on February 26,      2010).                                                                  |
| 10.15*** | Form      of Non-Employee Director Restricted Unit Grant Award under the Enterprise      Products 1998 Long-Term Incentive Plan (incorporated by reference to      Exhibit 10.6 to Form 8-K filed by Enterprise Products Partners L.P. on      February 26, 2010).                                                     |
| 10.16*** | Enterprise      Products Company 2005 EPE Long-Term Incentive Plan (amended and restated      as of February 23, 2010) (incorporated by reference to Exhibit 10.1 to      Form 8-K filed by Enterprise GP Holdings L.P. on February 26,      2010).                                                                    |
| 10.17*** | Form      of Unit Appreciation Right Grant Award (DEP Holding, LLC Directors) under      the Enterprise Products Company 2005 EPE Long-Term Incentive Plan      (incorporated by reference to Exhibit 10.24 to Form 10-K filed April 2,      2007).                                                                    |
| 10.18*** | Form      of Employee Restricted Unit Grant Award under the Enterprise Products      Company 2005                                                                                                                                                                                                                      |

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Table of Contents

|   | EPE      Long-Term Incentive Plan (incorporated by reference to Exhibit 10.3 to      Form 8-K filed by Enterprise GP Holdings L.P. on February 26,      2010). |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 10.19*** | Form      of Non-Employee Director Restricted Unit Grant Award under the Enterprise      Products Company 2005 EPE Long-Term Incentive Plan (incorporated by      reference to Exhibit 10.4 to Form 8-K filed by Enterprise GP Holdings L.P.      on February 26, 2010). |
|----------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.20*** | Form      of Phantom Unit Grant Award under the Enterprise Products Company 2005 EPE      Long-Term Incentive Plan (incorporated by reference to Exhibit10.5 to Form      8-K filed by Enterprise GP Holdings L.P. on February 26,      2010).                           |
| 10.21*** | 2010      Duncan Energy Partners L.P. Long-Term Incentive Plan (Amended and Restated      as of February 23, 2010) (incorporated by reference to Exhibit 10.1 to      Form 8-K filed February 26, 2010).                                                                 |
| 10.22*** | Form      of Option Award under the 2010 Duncan Energy Partners L.P. Long-Term      Incentive Plan (incorporated by reference to Exhibit 10.2 to Form 8-K      filed February 26, 2010).                                                                                 |
| 10.23*** | Form      of Employee Restricted Unit Grant Award under the 2010 Duncan Energy      Partners L.P. Long-Term Incentive Plan (incorporated by reference to      Exhibit 10.3 to Form 8-K filed February 26, 2010).                                                         |
| 10.24*** | Form      of Non-Employee Director Restricted Unit Grant Award under the 2010 Duncan      Energy Partners L.P. Long-Term Incentive Plan (incorporated by reference      to Exhibit 10.4 to Form 8-K filed February 26, 2010).                                            |
| 10.25*** | Agreement      of Limited Partnership of Enterprise Unit L.P. dated February 20,      2008 (incorporated by reference to Exhibit 10.1 to Form 8-K      filed by Enterprise Products Partners L.P. on February 26,      2008).                             |
| 10.26*** | First      Amendment to Agreement of Limited Partnership of Enterprise Unit L.P.      dated December 2, 2009 (incorporated by reference to      Exhibit 10.4 to Form 8-K filed by Enterprise GP Holdings L.P. on      December 8, 2009).             |
| 10.27*** | Agreement      of Limited Partnership of EPCO Unit L.P. dated November 13, 2008      (incorporated by reference to Exhibit 10.5 to Form 8-K filed by      Enteprise Products Partners L.P. on November 18, 2008).                                              |
| 10.28*** | First      Amendment to Agreement of Limited Partnership of EPCO Unit L.P. dated      December 2, 2009 (incorporated by reference to Exhibit 10.5 to      Form 8-K filed by Enterprise GP Holdings L.P. on December 8,      2009).                   |
| 10.29*** | Agreement      of Limited Partnership of EPE Unit L.P. dated August 23, 2005      (incorporated by reference to Exhibit 10.2 to Form 8-K filed by Enterprise      GP Holdings L.P. on September 1, 2005).                                                                |
| 10.30*** | First      Amendment to Agreement of Limited Partnership of EPE Unit L.P. dated      August 7, 2007 (incorporated by reference to Exhibit 10.3 to Form 10-Q      filed August 8, 2007).                                                                                  |
| 10.31*** | Second      Amendment to Agreement of Limited Partnership of EPE Unit L.P. dated July      1, 2008 (incorporated by reference to Exhibit 10.1 to Form 8-K filed by      Enterprise GP Holdings L.P. on July 7, 2008).                                                    |
| 10.32*** | Third      Amendment to Agreement of Limited Partnership of EPE Unit L.P. dated      December 2, 2009 (incorporated by reference to Exhibit 10.1 to      Form 8-K filed by Enterprise GP Holdings L.P. on December 8,      2009).                    |
| 10.33*** | Agreement      of Limited Partnership of EPE Unit II, L.P. dated December 5, 2006      (incorporated by reference to Exhibit 10.13 to Form 10-K filed by      Enterprise Product Partners L.P. on February 28, 2007).                                                    |
| 10.34*** | First      Amendment to Agreement of Limited Partnership of EPE Unit II, L.P. dated      August 7, 2007 (incorporated by reference to Exhibit 10.4 to Form 10-Q      filed August 8, 2007).                                                                              |
| 10.35*** | Second      Amendment to Agreement of Limited Partnership of EPE Unit II, L.P. dated      July 1, 2008 (incorporated by reference to Exhibit 10.2 to Form 8-K filed      by Enterprise GP Holdings L.P. on July 7, 2008).                                                |
| 10.36*** | Third      Amendment to Agreement of Limited Partnership of EPE Unit II, L.P. dated      December 2, 2009 (incorporated by reference to Exhibit 10.2 to      Form 8-K filed by Enterprise GP Holdings L.P. on December 8,      2009).                |
| 10.37*** | Agreement      of Limited Partnership of EPE Unit III, L.P. dated May 7, 2007      (incorporated by reference to Exhibit 10.6 to Form 8-K filed by      Enterprise GP Holdings L.P. on May 10, 2007).                                                     |
| 10.38*** | First      Amendment to Agreement of Limited Partnership of EPE Unit III, L.P. dated      August 7,                                                                                                                                                                      |

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|   | 2007      (incorporated by reference to Exhibit 10.5 to Form 10-Q filed August 8,      2007). |
|--------|-----------------------------------------------------------------------------------------------|

| 10.39*** | Second      Amendment to Agreement of Limited Partnership of EPE Unit III, L.P. dated      July 1, 2008 (incorporated by reference to Exhibit 10.3 to Form 8-K filed      by Enterprise GP Holdings L.P. on July 7, 2008).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|----------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.40*** | Third      Amendment to Agreement of Limited Partnership of EPE Unit III, L.P. dated      December 2, 2009 (incorporated by reference to Exhibit 10.3 to      Form 8-K filed by Enterprise GP Holdings L.P. on December 8,      2009).                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| 10.41    | Second      Amended and Restated Limited Liability Company Agreement of Mont Belvieu      Caverns, LLC dated November 1, 2008 (incorporated by reference to Exhibit      10.4 to Form 10-Q filed November 10, 2008).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| 10.42    | Purchase      and Sale Agreement dated as of December 8, 2008 by and among (a)      Enterprise Products Operating LLC and Enterprise GTM Holdings L.P. as      Seller Parties and (b) Duncan Energy Partners L.P., DEP Holdings, LLC, DEP      Operating Partnership, L.P. and DEP OLP GP, LLC as Buyer Parties      (incorporated by reference to Exhibit 10.1 of Form 8-K filed December 8,      2008).                                                                                                                                                                                                                                                                                                                            |
| 10.43    | Contribution,      Conveyance and Assumption Agreement dated as of December 8, 2008 by and      among Duncan Energy Partners L.P., DEP OLPGP, LLC, DEP Operating      Partnership, L.P., Enterprise GTM Holdings L.P. and Enterprise Holding      III, L.L.C. (incorporated by reference to Exhibit 10.2 of Form 8-K filed      December 8, 2008).                                                                                                                                                                                                                                                                                                                                                                                   |
| 10.44    | Third      Amended and Restated Agreement of Limited Partnership of Enterprise GC,      L.P. dated December 8, 2008 (incorporated by reference to Exhibit 10.3 of      Form 8-K filed December 8, 2008).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| 10.45    | Fourth      Amended and Restated Agreement of Limited Partnership of Enterprise      Intrastate L.P. dated December 8, 2008 (incorporated by reference to      Exhibit 10.4 of Form 8-K filed December 8, 2008).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| 10.46    | Amended      and Restated Company Agreement of Enterprise Texas Pipeline LLC dated      December 8, 2008 (incorporated by reference to Exhibit 10.5 of Form 8-K      filed December 8, 2008).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| 10.47    | Amended      and Restated Omnibus Agreement dated December 8, 2008 among Enterprise      Products Operating LLC, DEP Holdings, LLC, Duncan Energy Partners L.P.,      DEP OLPGP, LLC, DEP Operating Partnership, L.P., Enterprise Lou-Tex      Propylene Pipeline L.P., Sabine Propylene Pipeline L.P., Acadian Gas, LLC,      Mont Belvieu Caverns, LLC, South Texas NGL Pipelines, LLC, Enterprise      Holding III, LLC, Enterprise Texas Pipeline LLC, Enterprise Intrastate      L.P. and Enterprise GC, LP (incorporated by reference to Exhibit 10.6 of      Form 8-K filed December 8, 2008).                                                                                                                                |
| 10.48    | Unit      Purchase Agreement, dated as of December 8, 2008, by and between Duncan      Energy Partners L.P. and Enterprise Products Operating LLC (incorporated      by reference to Exhibit 10.9 of Form 8-K filed December 8,      2008).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| 10.49    | Fifth      Amended and Restated Administrative Services Agreement dated January 30,      2009 by and among EPCO, Inc., Enterprise GP Holdings L.P., EPE Holdings,      LLC, Enterprise Products Partners L.P., Enterprise Products Operating      L.P., Enterprise Products GP, LLC, Enterprise Products OLPGP, Inc., DEP      Holdings, LLC, Duncan Energy Partners L.P., DEP Operating Partnership,      L.P., TEPPCO Partners, L.P., Texas Eastern Products Pipeline Company, LLC,      TE Products Pipeline Company, LLC, TEPPCO Midstream Companies, LLC, TCTM,      L.P. and TEPPCO GP, Inc. (incorporated by reference to Exhibit 10.1 to      Form 8-K filed by Enterprise Products Partners L.P. on February 5,      2009). |
| 10.50    | Common      Unit Purchase Agreement, dated June 15, 2009, by and among Enterprise      Products Operating LLC and Enterprise GTM Holdings L.P. as Sellers and      Duncan Energy Partners L.P. as Buyer (incorporated by reference to Exhibit      1.2 to Form 8-K filed June 18, 2009).                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| 10.51    | Revolving      Credit Agreement, dated as of January 5, 2007, among Duncan Energy      Partners L.P., as Borrower, the Lenders Party Thereto, Wachovia Bank,      National Association, as Administrative Agent, Issuing Bank and Swingline      Lender, The Bank of Nova Scotia and Citibank, N.A., as Co-Syndication      Agents, JPMorgan Chase Bank, N.A. and Mizuho Corporate Bank, Ltd., as      Co-Documentation Agents, and Wachovia Capital Markets, LLC, The Bank of      Nova Scotia and Citigroup Global Markets Inc., as Joint Lead Arrangers and      Joint Book Runners (incorporated by reference to Exhibit 10.20 to      Amendment No. 2 to Form S-1                                                          |

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|   | Registration      Statement (Reg. No. 333-138371) filed January 12,  2007). |
|--------|-----------------------------------------------------------------------------|

| 10.52 | First      Amendment to Revolving Credit Agreement, dated as of June 30, 2007, among      Duncan Energy Partners L.P., as Borrower, the Lenders Party      Thereto.  Wachovia Bank, National Association, as Administrative      Agent, The Bank of Nova Scotia and Citibank, N.A., as Co-Syndication      Agents, JPMorgan Chase Bank, N.A. and Mizuho Corporate Bank, Ltd., as      Co-Documentation Agents, and Wachovia Capital Markets, LLC, The Bank of      Nova Scotia and Citigroup Global Markets Inc., as Joint Lead Arrangers and      Joint Book Runners (incorporated by reference to Exhibit 4.2 to Form 10-Q      filed August 8, 2007).                                |
|-------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.53 | Term      Loan Agreement, dated as of April 18, 2008, among Duncan Energy Partners      L.P., as Borrower, the Lenders Party Thereto, Wachovia Bank, National      Association, as Administrative Agent, Suntrust Bank and The Bank of Nova      Scotia, as Co-Syndication Agents, Mizuho Corporate Bank, Ltd. and The      Royal Bank of Scotland plc, as Co-Documentation Agents, and Wachovia      Capital Markets, LLC, SunTrust Robinson Humphrey, a division of SunTrust      Capital Markets, Inc. and The Bank of Nova Scotia, as Joint Lead Arrangers      and Joint Book Runners (incorporated by reference to Exhibit 10.7 of Form      8-K filed December 8, 2008).                   |
| 10.54 | First      Amendment to Term Loan Agreement, dated as of July 11, 2008, among Duncan      Energy Partners L.P., as Borrower, the Lenders Party Thereto, Wachovia      Bank, National Association, as Administrative Agent, Suntrust Bank and The      Bank of Nova Scotia, as Co-Syndication Agents, Mizuho Corporate Bank, Ltd.      and The Royal Bank of Scotland plc, as Co-Documentation Agents, and      Wachovia Capital Markets, LLC, SunTrust Robinson Humphrey, a division of      SunTrust Capital Markets, Inc. and The Bank of Nova Scotia, as Joint Lead      Arrangers and Joint Book Runners (incorporated by reference to Exhibit      10.8 of Form 8-K filed December 8, 2008). |
| 12.1# | Computation      of ratio of earnings to fixed charges for each of the five years ended      December 31, 2009, 2008, 2007, 2006 and 2005.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| 21.1# | List      of Subsidiaries as of February 1, 2010.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| 23.1# | Consent      of Deloitte & Touche LLP.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| 31.1# | Sarbanes-Oxley      Section 302 certification of Richard H. Bachmann for Duncan Energy      Partners L.P. for the December 31, 2009 Annual Report on Form      10-K.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| 31.2# | Sarbanes-Oxley      Section 302 certification of W. Randall Fowler for Duncan Energy Partners      L.P. for the December 31, 2009 Annual Report on Form  10-K.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| 32.1# | Section      1350 certification of Richard H. Bachmann for the December 31, 2009 Annual      Report on Form 10-K.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| 32.2# | Section      1350 certification of W. Randall Fowler for the December 31, 2009 Annual      Report on Form 10-K.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |

| * | With      respect to exhibits incorporated by reference to Exchange Act filings, the      Commission file numbers for Enterprise Products Partners L.P. and      Enterprise GP Holdings L.P. are 1-14323 and 1-32610,      respectively. |
|---|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| *** | Identifies      management contract and compensatory plan  arrangements. |
|-----|--------------------------------------------------------------------------|

| # | Filed      with this report. |
|---|------------------------------|

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SIGNATURES

|   |   |   |   |   | DUNCAN      ENERGY PARTNERS L.P.                                                                                                                                                                                                                                                                                                                           |
|--------|--------|--------|--------|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |   |   |   |   | (A      Delaware Limited Partnership)                                                                                                                                                                                                                                                                                                                      |
|   |   |   |   |   |                                                                                                                                                                                                                                                                                                                                                       |
|   |   |   |   |   | By:    DEP      Holdings, LLC, as General Partner                                                                                                                                                                                                                                                                                      |
|   |   |   |   |   |                                                                                                                                                                                                                                                                                                                                                       |
|   |   |   |   |   | By:            /s/      Michael J.      Knesek                                              |
|   |   |   |   |   | Name:  Michael      J. Knesek                                                                                                                                                                                                                                                                                                                    |
|   |   |   |   |   | Title:    Senior      Vice President, Controller             and      Principal Accounting Officer             of      the General Partner                                                           |

| Signature                                        |   | Title      (Position with DEP Holdings, LLC)                                         |
|--------------------------------------------------|--------|--------------------------------------------------------------------------------------|
|                                             |   |                                                                                 |
| /s/      Dan L. Duncan                           |   | Director      and Chairman                                                           |
|    Dan      L. Duncan             |   |                                                                                 |
|                                             |   |                                                                                 |
| /s/      Richard H. Bachmann                     |   | Director,      President and Chief Executive Officer                                 |
|    Richard      H. Bachmann       |   |                                                                                 |
|                                             |   |                                                                                 |
| /s/      W. Randall Fowler                       |   | Director,      Executive Vice President and Chief Financial Officer                  |
|    W.      Randall Fowler         |   |                                                                                 |
|                                             |   |                                                                                 |
| /s/      A. James Teague                         |   | Director,      Executive Vice President  and Chief Commercial      Officer |
|    A.      James Teague           |   |                                                                                 |
|                                             |   |                                                                                 |
| /s/      Michael A. Creel                        |   | Director                                                                             |
|    Michael      A. Creel          |   |                                                                                 |
|                                             |   |                                                                                 |
| /s/      Dr. Ralph S. Cunningham                 |   | Director                                                                             |
|    Dr.      Ralph S. Cunningham   |   |                                                                                 |
|                                             |   |                                                                                 |
| /s/      Larry J. Casey                          |   | Director                                                                             |
|    Larry      J. Casey            |   |                                                                                 |
|                                             |   |                                                                                 |
| /s/      Joe D. Havens                           |   | Director                                                                             |
|    Joe      D. Havens             |   |                                                                                 |
|                                             |   |                                                                                 |
| /s/      William A. Bruckmann, III               |   | Director                                                                             |
|    William      A. Bruckmann, III |   |                                                                                 |
|                                             |   |                                                                                 |
| /s/      Richard S. Snell                        |   | Director                                                                             |
|     Richard      S. Snell    |   |                                                                                 |
|                                             |   |                                                                                 |
| /s/      Michael J. Knesek                       |   | Senior      Vice President, Controller and Principal Accounting  Officer             |
|    Michael      J. Knesek         |   |                                                                                 |

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Table of Contents

|                                                                                                |                                                                                                                                                  | Page      No. |
|-----------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------|---------------|
| Report of Independent Registered Public Accounting      Firm                                        | F - 2                                                                                                                                                 |
|                                                                                                |                                                                                                                                                  |          |
| Consolidated Balance Sheets as of December 31, 2009      and 2008                                   | F - 3                                                                                                                                                 |
|                                                                                                |                                                                                                                                                  |          |
| Statements of Consolidated    Operations                                                            |                                                                                                                                                  |
|        for the Years Ended December 31, 2009, 2008 and      2007 | F - 4                                                                                                                                                 |
|                                                                                                |                                                                                                                                                  |          |
| Statements of Consolidated Comprehensive      Income                                                |                                                                                                                                                  |
|        for the Years Ended December 31, 2009, 2008 and      2007 | F - 5                                                                                                                                                 |
|                                                                                                |                                                                                                                                                  |          |
| Statements of Consolidated Cash    Flows                                                            |                                                                                                                                                  |
|        for the Years Ended December 31, 2009, 2008 and      2007 | F - 6                                                                                                                                                 |
|                                                                                                |                                                                                                                                                  |          |
| Statements of Consolidated      Equity                                                              |                                                                                                                                                  |
|        for the Years Ended December 31, 2009, 2008 and      2007 | F - 7                                                                                                                                                 |
|                                                                                                |                                                                                                                                                  |          |
| Notes to Consolidated Financial    Statements:                                                      |                                                                                                                                                  |
|                                                                                                | Note 1 – Partnership Organization, Primary Operations and      Basis                                                                            |          |
|                                                                                                |                    of Financial Statement Presentation | F - 9         |
|                                                                                                | Note 2 – Summary of Significant Accounting      Policies                                                                                        | F - 12        |
|                                                                                                | Note 3 – Recent Accounting Developments                                                                                                         | F - 18        |
|                                                                                                | Note 4 – Revenue Recognition                                                                                                                    | F - 18        |
|                                                                                                | Note 5 – Equity-based Awards                                                                                                                    | F - 20        |
|                                                                                                | Note 6 – Derivative Instruments, Hedging Activities and Fair      Value Measurements                                                            | F - 26        |
|                                                                                                | Note 7 – Inventories                                                                                                                            | F - 31        |
|                                                                                                | Note 8 – Property, Plant and Equipment                                                                                                          | F - 32        |
|                                                                                                | Note 9 – Investment in Evangeline                                                                                                               | F - 33        |
|                                                                                                | Note 10 – Intangible Assets andGoodwill                                                                                                         | F - 35        |
|                                                                                                | Note 11 – Debt Obligations                                                                                                                      | F - 36        |
|                                                                                                | Note 12 – Equity and Distributions                                                                                                              | F - 37        |
|                                                                                                | Note 13 – Noncontrolling Interest                                                                                                               | F - 40        |
|                                                                                                | Note 14 – Business Segments                                                                                                                     | F - 43        |
|                                                                                                | Note 15 – Related Party Transactions                                                                                                            | F - 48        |
|                                                                                                | Note 16 – Earnings Per Unit                                                                                                                     | F - 53        |
|                                                                                                | Note 17 – Commitments and Contingencies                                                                                                         | F - 54        |
|                                                                                                | Note 18 – Significant Risks and      Uncertainties                                                                                              | F - 56        |
|                                                                                                | Note 19 – Supplemental Cash Flow      Information                                                                                               | F - 58        |
|                                                                                                | Note 20 – Quarterly Financial Information      (Unaudited)                                                                                      | F - 59        |

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTINGFIRM

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DUNCAN ENERGY PARTNERS L.P.

|                                                                                                                |   | December      31, |    |
|---------------------------------------------------------------------------------------------------------------------|--------|-------------------|---------|
|                                                                                                                |   | 2009              |    |   | 2008 |   |
| ASSETS                                                                                                              |   |              |    |   |   |   |
| Current      assets                                                                                                 |   |              |    |   |   |   |
| Cash      and cash equivalents                                                                                      |   | $                 | 3.9     |   |   | $ | 13.0 |   |
| Accounts      receivable – trade, net of allowance for doubtful accounts                                      |   |              | 77.7    |   |   |   | 117.3 |   |
| Accounts      receivable – related parties                                                                    |   |              | 54.5    |   |   |   | 3.3 |   |
| Gas      imbalance receivables                                                                                      |   |              | 9.8     |   |   |   | 35.7 |   |
| Inventories                                                                                                         |   |              | 10.5    |   |   |   | 28.0 |   |
| Prepaid      and other current assets                                                                               |   |              | 9.8     |   |   |   | 4.3 |   |
|         Total current assets                                                                              |   |              | 166.2   |   |   |   | 201.6 |   |
| Property,      plant and equipment, net                                                                             |   |              | 4,549.6 |   |   |   | 4,330.2 |   |
| Investments      in Evangeline                                                                                      |   |              | 5.6     |   |   |   | 4.5 |   |
| Intangible      assets, net of accumulated amortization of $42.6 at December 31,      2009                          |   |              |    |   |   |   |   |   |
| and      $34.1 at December 31, 2008                                                                                 |   |              | 43.8    |   |   |   | 52.3 |   |
| Goodwill                                                                                                            |   |              | 4.9     |   |   |   | 4.9 |   |
| Other      assets                                                                                                   |   |              | 0.7     |   |   |   | 1.2 |   |
|               Total assets                                                       |   | $                 | 4,770.8 |   |   | $ | 4,594.7 |   |
|                                                                                                                |   |              |    |   |   |   |   |   |
| LIABILITIES      AND EQUITY                                                                                         |   |              |    |   |   |   |   |   |
| Current      liabilities                                                                                            |   |              |    |   |   |   |   |   |
| Accounts      payable – trade                                                                                 |   | $                 | 54.5    |   |   | $ | 45.2 |   |
| Accounts      payable – related parties                                                                       |   |              | 13.6    |   |   |   | 48.5 |   |
| Accrued      product payables                                                                                       |   |              | 59.9    |   |   |   | 109.7 |   |
| Accrued      property taxes                                                                                         |   |              | 9.1     |   |   |   | 8.3 |   |
| Accrued      taxes – other                                                                               |   |              | 8.4     |   |   |   | 8.3 |   |
| Other      current liabilities                                                                                      |   |              | 18.9    |   |   |   | 33.3 |   |
|         Total current liabilities                                                                         |   |              | 164.4   |   |   |   | 253.3 |   |
| Long-term debt (see Note      11)                                                                                   |   |              | 457.3   |   |   |   | 484.3 |   |
| Deferred      tax liabilities                                                                                       |   |              | 5.8     |   |   |   | 5.7 |   |
| Other      long-term liabilities                                                                                    |   |              | 6.4     |   |   |   | 7.2 |   |
| Commitments      and contingencies                                                                                  |   |              |    |   |   |   |   |   |
| Equity:                                                                                                             |   |              |    |   |   |   |   |   |
| Duncan      Energy Partners L.P. partners’ equity: (see Note 12)                                              |   |              |    |   |   |   |   |   |
|         Limited partners                                                                                  |   |              |    |   |   |   |   |   |
|            Common units (57,676,987 common units outstanding at December 31, 2009      and |   |              |    |   |   |   |   |   |
|               20,343,100 common units outstanding at December 31, 2008)     |   |              | 766.6   |   |   |   | 308.2 |   |
|            Class B units (37,333,887 Class B units outstanding at December 31,      2008)  |   |              | --      |   |   |   | 453.8 |   |
|         General partner                                                                                   |   |              | 0.2     |   |   |   | 0.4 |   |
|         Accumulated other comprehensive loss                                                              |   |              | (5.4    | ) |   |   | (9.6 | ) |
|            Total Duncan Energy Partners L.P. partners’ equity                        |   |              | 761.4   |   |   |   | 752.8 |   |
| Noncontrolling      interest in subsidiaries: (see Note 13)                                                         |   |              |    |   |   |   |   |   |
|         DEP I Midstream Businesses – Parent                                                         |   |              | 487.3   |   |   |   | 478.4 |   |
|         DEP II Midstream Businesses – Parent                                                        |   |              | 2,888.2 |   |   |   | 2,613.0 |   |
|            Total noncontrolling interest                                                   |   |              | 3,375.5 |   |   |   | 3,091.4 |   |
|               Total equity                                                  |   |              | 4,136.9 |   |   |   | 3,844.2 |   |
|          Total      liabilities and equity                             |   | $                 | 4,770.8 |   |   | $ | 4,594.7 |   |

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 DUNCANENERGY PARTNERS L.P.

|                                                                               |   | For      Year Ended December 31, |   |
|------------------------------------------------------------------------------------|--------|----------------------------------|--------|
|                                                                               |   | 2009                             |   |   | 2008 |   |   | 2007 |   |
| Revenues                                                                           |   |                             |   |   |   |   |   |   |   |
| Third      parties                                                                 |   | $                                | 492.0  |   |   | $ | 856.4 |   |   | $ | 759.3 |   |
| Related      parties                                                               |   |                             | 487.3  |   |   |   | 741.7 |   |   |   | 461.0 |   |
|         Total revenues (see Note 14)                                     |   |                             | 979.3  |   |   |   | 1,598.1 |   |   |   | 1,220.3 |   |
| Costs      and Expenses                                                            |   |                             |   |   |   |   |   |   |   |   |   |   |
| Operating      costs and expenses:                                                 |   |                             |   |   |   |   |   |   |   |   |   |   |
| Third      parties                                                                 |   |                             | 749.0  |   |   |   | 1,167.7 |   |   |   | 1,066.7 |   |
| Related      parties                                                               |   |                             | 159.3  |   |   |   | 345.1 |   |   |   | 104.3 |   |
| Total      operating costs and expenses                                            |   |                             | 908.3  |   |   |   | 1,512.8 |   |   |   | 1,171.0 |   |
| General      and administrative costs:                                             |   |                             |   |   |   |   |   |   |   |   |   |   |
| Third      parties                                                                 |   |                             | 0.3    |   |   |   | 3.4 |   |   |   | 1.7 |   |
| Related      parties                                                               |   |                             | 10.9   |   |   |   | 14.9 |   |   |   | 11.4 |   |
| Total      general and administrative costs                                        |   |                             | 11.2   |   |   |   | 18.3 |   |   |   | 13.1 |   |
| Total      costs and expenses                                                      |   |                             | 919.5  |   |   |   | 1,531.1 |   |   |   | 1,184.1 |   |
| Equity      in income of Evangeline                                                |   |                             | 1.1    |   |   |   | 0.9 |   |   |   | 0.2 |   |
| Operating      income                                                              |   |                             | 60.9   |   |   |   | 67.9 |   |   |   | 36.4 |   |
| Other      income (expense)                                                        |   |                             |   |   |   |   |   |   |   |   |   |   |
| Interest      expense                                                              |   |                             | (14.0  | ) |   |   | (12.0 | ) |   |   | (9.3 | ) |
| Other,      net                                                                    |   |                             | 0.2    |   |   |   | 0.5 |   |   |   | 0.7 |   |
| Other      expense, net                                                            |   |                             | (13.8  | ) |   |   | (11.5 | ) |   |   | (8.6 | ) |
| Income      before provision for income taxes                                      |   |                             | 47.1   |   |   |   | 56.4 |   |   |   | 27.8 |   |
| Provision      for income taxes                                                    |   |                             | (1.3   | ) |   |   | (1.1 | ) |   |   | (4.2 | ) |
| Net      income                                                                    |   |                             | 45.8   |   |   |   | 55.3 |   |   |   | 23.6 |   |
| Net      loss (income) attributable to noncontrolling interest: (see Note      13) |   |                             |   |   |   |   |   |   |   |   |   |   |
| DEP      I Midstream Businesses - Parent                                           |   |                             | (15.3  | ) |   |   | (11.4 | ) |   |   | (20.0 | ) |
| DEP      II Midstream Businesses - Parent                                          |   |                             | 60.6   |   |   |   | 4.0 |   |   |   | -- |   |
| Total      net loss (income) attributable to noncontrolling interest               |   |                             | 45.3   |   |   |   | (7.4 | ) |   |   | (20.0 | ) |
| Net income attributable to      Duncan Energy Partners L.P. (see Note 1)           |   | $                                | 91.1   |   |   | $ | 47.9 |   |   | $ | 3.6 |   |
|                                                                               |   |                             |   |   |   |   |   |   |   |   |   |   |
| Allocation      of net income attributable to Duncan Energy                        |   |                             |   |   |   |   |   |   |   |   |   |   |
|     Partners L.P.: (see Note      1)                           |   |                             |   |   |   |   |   |   |   |   |   |   |
| Duncan      Energy Partners L.P.:                                                  |   |                             |   |   |   |   |   |   |   |   |   |   |
| Limited      partners’ interest in net income                                |   | $                                | 90.5   |   |   | $ | 27.8 |   |   | $ | 18.8 |   |
| General      partner interest in net income                                        |   | $                                | 0.6    |   |   | $ | 0.5 |   |   | $ | 0.4 |   |
| Former      owners of DEP I Midstream Businesses                                   |   |                             |   |   |   |   | n/a |   |   | $ | 5.0 |   |
| Former      owners of DEP II Midstream Businesses                                  |   |                             |   |   |   | $ | 19.6 |   |   | $ | (20.6 | ) |
|                                                                               |   |                             |   |   |   |   |   |   |   |   |   |   |
| Basic and diluted earnings per      unit (see Note 16)                             |   | $                                | 1.57   |   |   | $ | 1.22 |   |   | $ | 0.93 |   |

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DUNCAN ENERGY PARTNERS L.P.

|                                                                                            |   | For      Year Ended December 31, |   |
|-------------------------------------------------------------------------------------------------|--------|---------------------------------------|--------|
|                                                                                            |   | 2009                                  |   |   | 2008 |   |   | 2007 |   |
|                                                                                            |   |                                  |   |   |   |   |   |   |   |
| Net      income                                                                                 |   | $                                     | 45.8   |   |   | $ | 55.3 |   |   | $ | 23.6 |   |
| Other      comprehensive income (loss):                                                         |   |                                  |   |   |   |   |   |   |   |   |   |   |
| Cash      flow hedges:                                                                          |   |                                  |   |   |   |   |   |   |   |   |   |   |
| Interest      rate derivative instrument losses during period                                   |   |                                  | (2.5   | ) |   |   | (8.0 | ) |   |   | (3.3 | ) |
| Reclassification      adjustment for (gains) losses included in net                             |   |                                  |   |   |   |   |   |   |   |   |   |   |
|    income      related to interest rate derivative instruments                   |   |                                  | 6.6    |   |   |   | 2.0 |   |   |   | (0.3 | ) |
| Commodity      derivative instrument losses during period                                       |   |                                  | --     |   |   |   | (0.7 | ) |   |   | (0.1 | ) |
| Reclassification      adjustment for losses included in net                                     |   |                                  |   |   |   |   |   |   |   |   |   |   |
|    income      related to commodity derivative instruments                       |   |                                  | --     |   |   |   | 0.7 |   |   |   | 0.1 |   |
| Total      other comprehensive income (loss)                                                    |   |                                  | 4.1    |   |   |   | (6.0 | ) |   |   | (3.6 | ) |
| Comprehensive      income                                                                       |   |                                  | 49.9   |   |   |   | 49.3 |   |   |   | 20.0 |   |
| Comprehensive      loss (income) attributable to noncontrolling interest:                       |   |                                  |   |   |   |   |   |   |   |   |   |   |
| DEP      I Midstream Businesses – Parent                                                  |   |                                  | (15.3  | ) |   |   | (11.4 | ) |   |   | (20.0 | ) |
| DEP      II Midstream Businesses – Parent                                                 |   |                                  | 60.6   |   |   |   | 4.0 |   |   |   | -- |   |
| Total      comprehensive loss (income) attributable to noncontrolling      interest             |   |                                  | 45.3   |   |   |   | (7.4 | ) |   |   | (20.0 | ) |
| Comprehensive      loss (income) allocated to former owners of DEP II Midstream      Businesses |   |                                  | --     |   |   |   | (19.6 | ) |   |   | 20.6 |   |
| Comprehensive      income attributable to Duncan Energy Partners L.P.                           |   | $                                     | 95.2   |   |   | $ | 22.3 |   |   | $ | 20.6 |   |

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DUNCAN ENERGY PARTNERS L.P.

|                                                                                          |   | For      Year Ended December 31, |   |
|-----------------------------------------------------------------------------------------------|--------|----------------------------------|--------|
|                                                                                          |   | 2009                             |   |   | 2008 |   |   | 2007 |   |
| Operating      activities:                                                                    |   |                             |   |   |   |   |   |   |   |
| Net      income                                                                               |   | $                                | 45.8   |   |   | $ | 55.3 |   |   | $ | 23.6 |   |
| Adjustments      to reconcile net income to net cash flows                                    |   |                             |   |   |   |   |   |   |   |   |   |   |
|    provided      by operating activities:                                      |   |                             |   |   |   |   |   |   |   |   |   |   |
| Depreciation,      amortization and accretion                                                 |   |                             | 188.3  |   |   |   | 167.8 |   |   |   | 175.6 |   |
| Equity      in income of Evangeline                                                           |   |                             | (1.1   | ) |   |   | (0.9 | ) |   |   | (0.2 | ) |
| Gain      on sale of assets and related transactions                                          |   |                             | (0.5   | ) |   |   | (0.5 | ) |   |   | (0.1 | ) |
| Deferred      income tax expense                                                              |   |                             | --     |   |   |   | 0.3 |   |   |   | 3.8 |   |
| Non-cash      asset impairment                                                                |   |                             | 4.2    |   |   |   | -- |   |   |   | -- |   |
| Changes      in fair market value of derivative instruments                                   |   |                             | (0.2   | ) |   |   | (0.1 | ) |   |   | 0.2 |   |
| Net      effect of changes in operating accounts (see Note 19)                                |   |                             | (80.5  | ) |   |   | (1.8 | ) |   |   | 14.2 |   |
|         Cash flows provided by operating activities                                 |   |                             | 156.0  |   |   |   | 220.1 |   |   |   | 217.1 |   |
| Investing      activities:                                                                    |   |                             |   |   |   |   |   |   |   |   |   |   |
| Capital      expenditures                                                                     |   |                             | (389.1 | ) |   |   | (759.5 | ) |   |   | (340.1 | ) |
| Contributions      in aid of construction costs                                               |   |                             | 5.7    |   |   |   | 9.9 |   |   |   | 10.0 |   |
| Proceeds      from sale of assets and related transactions                                    |   |                             | 0.9    |   |   |   | 0.9 |   |   |   | 12.6 |   |
| Cash      used for business combinations                                                      |   |                             | (0.7   | ) |   |   | -- |   |   |   | (35.0 | ) |
| Other                                                                                         |   |                             | --     |   |   |   | (0.1 | ) |   |   | 0.1 |   |
| Cash      used in investing activities                                                        |   |                             | (383.2 | ) |   |   | (748.8 | ) |   |   | (352.4 | ) |
| Financing      activities:                                                                    |   |                             |   |   |   |   |   |   |   |   |   |   |
| Repayments      of debt                                                                       |   |                             | (103.2 | ) |   |   | (114.7 | ) |   |   | (114.0 | ) |
| Borrowings      under debt agreements                                                         |   |                             | 76.2   |   |   |   | 398.9 |   |   |   | 314.0 |   |
| Debt      issuance costs                                                                      |   |                             | (0.4   | ) |   |   | (1.6 | ) |   |   | (0.5 | ) |
| Net      proceeds from Duncan Energy Partners’ common unitofferings                     |   |                             | 137.4  |   |   |   | 0.5 |   |   |   | 290.5 |   |
| Common      units repurchased from EPO and subsequently retired                               |   |                             | (137.4 | ) |   |   | -- |   |   |   | -- |   |
| Cash      distributions to Duncan Energy Partners’ unitholders and general      partner |   |                             | (88.9  | ) |   |   | (34.4 | ) |   |   | (21.8 | ) |
| Cash      distributions to noncontrolling interest                                            |   |                             | (51.6  | ) |   |   | (318.1 | ) |   |   | (491.0 | ) |
| Cash      contributions from noncontrolling interest                                          |   |                             | 386.0  |   |   |   | 183.3 |   |   |   | 105.0 |   |
| Net      cash contributions from former owners of the                                         |   |                             |   |   |   |   |   |   |   |   |   |   |
|   DEP      I Midstream Businesses                                                   |   |                             | --     |   |   |   | -- |   |   |   | 8.5 |   |
| Net      cash contributions from former owners of the                                         |   |                             |   |   |   |   |   |   |   |   |   |   |
|   DEP      II Midstream Businesses                                                  |   |                             | --     |   |   |   | 425.6 |   |   |   | 46.8 |   |
|           Cash provided by financing activities                           |   |                             | 218.1  |   |   |   | 539.5 |   |   |   | 137.5 |   |
| Net      changes in cash and cash equivalents                                                 |   |                             | (9.1   | ) |   |   | 10.8 |   |   |   | 2.2 |   |
| Cash      and cash equivalents, beginning of period                                           |   |                             | 13.0   |   |   |   | 2.2 |   |   |   | -- |   |
| Cash      and cash equivalents, end of period                                                 |   | $                                | 3.9    |   |   | $ | 13.0 |   |   | $ | 2.2 |   |

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Table of Contents

DUNCAN ENERGY PARTNERS L.P.

|                                                                                                                                                                            |   | Former      Owners |   |   |        |   |     |                        |   |   |           |   |   |   |   |   |             |   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------|--------|--------|-------------|--------|----------|-----------------------------|--------|--------|----------------|--------|--------|--------|--------|--------|------------------|--------|
|                                                                                                                                                                            |   | DEP      I         |   |   | DEP      II |   |     | Duncan      Energy Partners |   |   | Noncontrolling |   |   |   |   |
|                                                                                                                                                                            |   | Midstream          |   |   | Midstream   |   |     | Limited                     |   |   | General        |   |   |   |   |   | Interest      in |   |   |   |   |
|                                                                                                                                                                            |   | Businesses         |   |   | Businesses  |   |     | Partners                    |   |   | Partner        |   |   | AOCI   |   |   | Subsidiaries     |   |   | Total |   |
| Balance,      January 1, 2007                                                                                                                                                   |   | $                  | 725.8  |   |        | $      | 2,853.8  |                        |   | $      | --             |   |   | $      | --     |   |             | $      | -- |   |   | $ | -- |   |   | $ | 3,579.6 |   |
| Transactions      prior to the DEP I dropdown effective February 1, 2007:                                                                                                       |   |               |   |   |        |   |     |                        |   |   |           |   |   |   |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
| Net      income (loss)                                                                                                                                                          |   |               | 5.0    |   |        |   | (0.3     | )                           |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | 4.7 |   |
| Net      cash contributions (distributions) to former owners                                                                                                                    |   |               | 8.5    |   |        |   | (8.8     | )                           |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | (0.3 | ) |
| Balance,      January 31, 2007                                                                                                                                                  |   |               | 739.3  |   |        |   | 2,844.7  |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | 3,584.0 |   |
| Transactions      in connection with Duncan Energy Partners’  initial        public offering      and the DEP I drop down effective February 1, 2007: |   |               |   |   |        |   |     |                        |   |   |           |   |   |   |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
| Adjustment      for liabilities of DEP I Midstream Businesses not    transferred                                                                                                |   |               |   |   |        |   |     |                        |   |   |           |   |   |   |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
| Adjustment      for liabilities of DEP I Midstream Businesses not transferred   to Duncan Energy Partners                                                             |   |               | 2.7    |   |        |   | --       |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | 2.7 |   |
| Retention      by noncontrolling interest of ownership interests                                                                                                                |   |               | (252.3 | )      |        |   | --       |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | 252.3 |   |   |   | -- |   |
| Allocation      of equity in the DEP I Midstream Businesses                                                                                                                     |   |               |   |   |        |   |     |                        |   |   |           |   |   |   |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
| to      Duncan Energy Partners                                                                                                                                                  |   |               | (489.7 | )      |        |   | --       |                        |   |   | 479.9          |   |   |   | 9.8    |   |             |   | -- |   |   |   | -- |   |   |   | -- |   |
| Net      proceeds from Duncan Energy Partners’ initial public    offering                                                                                                 |   |               | --     |   |        |   | --       |                        |   |   | 290.5          |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | 290.5 |   |
| Cash      distribution to noncontrolling interest at time of initial         public offering                                                                          |   |               | --     |   |        |   | --       |                        |   |   | (450.3         | )      |   |   | (9.2   | )      |             |   | -- |   |   |   | -- |   |   |   | (459.5 | ) |
| Balance,      February 1, 2007                                                                                                                                                  |   | $                  | --     |   |        |   | 2,844.7  |                        |   |   | 320.1          |   |   |   | 0.6    |   |             |   | -- |   |   |   | 252.3 |   |   |   | 3,417.7 |   |
| Net      income (loss)                                                                                                                                                          |   |               |   |   |        |   | (20.3    | )                           |   |   | 18.8           |   |   |   | 0.4    |   |             |   | -- |   |   |   | 20.0 |   |   |   | 18.9 |   |
| Amortization      of equity awards                                                                                                                                              |   |               |   |   |        |   | --       |                        |   |   | 0.2            |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | 0.2 |   |
| Cash      contributions from former owners                                                                                                                                      |   |               |   |   |        |   | 55.6     |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | 55.6 |   |
| Cash      distributions to partners                                                                                                                                             |   |               |   |   |        |   | --       |                        |   |   | (21.4          | )      |   |   | (0.4   | )      |             |   | -- |   |   |   | -- |   |   |   | (21.8 | ) |
| Cash      contributions from noncontrolling interest                                                                                                                            |   |               |   |   |        |   | --       |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | 105.0 |   |   |   | 105.0 |   |
| Cash      distributions to noncontrolling interest                                                                                                                              |   |               |   |   |        |   | --       |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | (31.5 | ) |   |   | (31.5 | ) |
| Cash      flow hedges                                                                                                                                                           |   |               |   |   |        |   | --       |                        |   |   | --             |   |   |   | --     |   |             |   | (3.6 | ) |   |   | -- |   |   |   | (3.6 | ) |
| Other                                                                                                                                                                           |   |               |   |   |        |   | 0.1      |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | 9.4 |   |   |   | 9.5 |   |
| Balance,      December 31, 2007                                                                                                                                                 |   |               |   |   |        |   | 2,880.1  |                        |   |   | 317.7          |   |   |   | 0.6    |   |             |   | (3.6 | ) |   |   | 355.2 |   |   |   | 3,550.0 |   |
| Transactions      prior to the DEP II drop down on December      8, 2008:                                                                                                       |   |               |   |   |        |   |     |                        |   |   |           |   |   |   |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
| Net      income – January 1, 2008 through December 7, 2008                                                                                                                |   |               |   |   |        |   | 19.6     |                        |   |   | 21.1           |   |   |   | 0.4    |   |             |   | -- |   |   |   | 12.0 |   |   |   | 53.1 |   |
| Amortization      of equity awards                                                                                                                                              |   |               |   |   |        |   | --       |                        |   |   | 0.2            |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | 0.2 |   |
| Cash      contributions from former owner                                                                                                                                       |   |               |   |   |        |   | 425.6    |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | 425.6 |   |
| Cash      contributions from noncontrolling interest                                                                                                                            |   |               |   |   |        |   | --       |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | 161.6 |   |   |   | 161.6 |   |
| Cash      distributions to noncontrolling interest                                                                                                                              |   |               |   |   |        |   | --       |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | (37.3 | ) |   |   | (37.3 | ) |
| Cash      distributions to partners                                                                                                                                             |   |               |   |   |        |   | --       |                        |   |   | (33.7          | )      |   |   | (0.7   | )      |             |   | -- |   |   |   | -- |   |   |   | (34.4 | ) |
| Cash      flow hedges                                                                                                                                                           |   |               |   |   |        |   | --       |                        |   |   | --             |   |   |   | --     |   |             |   | (0.3 | ) |   |   | -- |   |   |   | (0.3 | ) |
| Other                                                                                                                                                                           |   |               |   |   |        |   | 0.2      |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | (12.5 | ) |   |   | (12.3 | ) |
| Balance,      December 7, 2008                                                                                                                                                  |   |               |   |   |        |   | 3,325.5  |                        |   |   | 305.3          |   |   |   | 0.3    |   |             |   | (3.9 | ) |   |   | 479.0 |   |   |   | 4,106.2 |   |
| Transactions      in connection with the DEP II drop down on        December 8, 2008:                                                                                      |   |               |   |   |        |   |     |                        |   |   |           |   |   |   |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
| Retention      by noncontrolling interest of ownership interests                                                                                                                |   |               |   |   |        |   | (2,595.5 | )                           |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | 2,595.5 |   |   |   | -- |   |
| Allocation      of equity in the DEP II Midstream Businesses                                                                                                                    |   |               |   |   |        |   |     |                        |   |   |           |   |   |   |   |   |             |   |   |   |   |   |   |   |   |   |   |   |
| to      Duncan Energy Partners                                                                                                                                                  |   |               |   |   |        |   | (730.0   | )                           |   |   | 730.0          |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | -- |   |
| Cash      distribution paid to noncontrolling interest  at DEP II drop      down                                                                                      |   |               |   |   |        |   | --       |                        |   |   | (280.5         | )      |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | (280.5 | ) |
| Net      proceeds from the issuance of common units                                                                                                                             |   |               |   |   |        |   | --       |                        |   |   | 0.5            |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | 0.5 |   |
| Balance,      December 8, 2008                                                                                                                                                  |   |               |   |   |        | $      | --       |                        |   |   | 755.3          |   |   |   | 0.3    |   |             |   | (3.9 | ) |   |   | 3,074.5 |   |   |   | 3,826.2 |   |
| Net      income (loss) – December 8, 2008 through December 31, 2008                                                                                                       |   |               |   |   |        |   |     |                        |   |   | 6.7            |   |   |   | 0.1    |   |             |   | -- |   |   |   | (4.6 | ) |   |   | 2.2 |   |
| Cash      contributions from noncontrolling interest                                                                                                                            |   |               |   |   |        |   |     |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | 21.7 |   |   |   | 21.7 |   |
| Cash      distributions to noncontrolling interest                                                                                                                              |   |               |   |   |        |   |     |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | (0.3 | ) |   |   | (0.3 | ) |
| Cash      flow hedges                                                                                                                                                           |   |               |   |   |        |   |     |                        |   |   | --             |   |   |   | --     |   |             |   | (5.7 | ) |   |   | -- |   |   |   | (5.7 | ) |
| Other                                                                                                                                                                           |   |               |   |   |        |   |     |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | 0.1 |   |   |   | 0.1 |   |
| Balance,      December 31, 2008                                                                                                                                                 |   |               |   |   |        |   |     |                        |   |   | 762.0          |   |   |   | 0.4    |   |             |   | (9.6 | ) |   |   | 3,091.4 |   |   |   | 3,844.2 |   |
| Net      income (loss)                                                                                                                                                          |   |               |   |   |        |   |     |                        |   |   | 90.5           |   |   |   | 0.6    |   |             |   | -- |   |   |   | (45.3 | ) |   |   | 45.8 |   |
| Amortization      of equity awards                                                                                                                                              |   |               |   |   |        |   |     |                        |   |   | 2.2            |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | 2.2 |   |
| Net      proceeds from Duncan Energy Partners’ common unitofferings                                                                                                       |   |               |   |   |        |   |     |                        |   |   | 137.4          |   |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | 137.4 |   |
| Cash      contributions from noncontrolling interest                                                                                                                            |   |               |   |   |        |   |     |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | 386.0 |   |   |   | 386.0 |   |
| Cash      distributions to noncontrolling interest                                                                                                                              |   |               |   |   |        |   |     |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | (51.6 | ) |   |   | (51.6 | ) |
| Cash      distributions to unitholders and general partner                                                                                                                      |   |               |   |   |        |   |     |                        |   |   | (88.1          | )      |   |   | (0.8   | )      |             |   | -- |   |   |   | -- |   |   |   | (88.9 | ) |
| Common      units repurchased from EPO and retired (see Note 12)                                                                                                                |   |               |   |   |        |   |     |                        |   |   | (137.4         | )      |   |   | --     |   |             |   | -- |   |   |   | -- |   |   |   | (137.4 | ) |
| Cash      flow hedges                                                                                                                                                           |   |               |   |   |        |   |     |                        |   |   | --             |   |   |   | --     |   |             |   | 4.2 |   |   |   | -- |   |   |   | 4.2 |   |
| Other                                                                                                                                                                           |   |               |   |   |        |   |     |                        |   |   | --             |   |   |   | --     |   |             |   | -- |   |   |   | (5.0 | ) |   |   | (5.0 | ) |
| Balance,      December 31, 2009                                                                                                                                                 |   |               |   |   |        |   |     |                        |   | $      | 766.6          |   |   | $      | 0.2    |   |             | $      | (5.4 | ) |   | $ | 3,375.5 |   |   | $ | 4,136.9 |   |

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Except per unit amounts, or as noted within the context of eachfootnote disclosure, dollar amounts presented in the tabular data within thesefootnote disclosures are stated in millions of dollars.

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Note 1. Partnership Organization, Primary Operations

| §   | Mont      Belvieu Caverns owns 34 underground salt dome storage caverns located in      Mont Belvieu, Texas, having an NGL and related product storage capacity of      approximately 100 millionbarrels |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|    | (“MMBbls”),      and a brine system with approximately 20 MMBbls of above ground storage      capacity and two brine productionwells. |
|--------------|---------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Acadian      Gas is engaged in the gathering, transportation, storage and marketing of      natural gas in south Louisiana, utilizing over 1,000 miles of      pipelines having an aggregate throughput capacity of 1.0 billion cubic      feet per day (“Bcf/d”).  Acadian Gas also owns a 49.51% equity      interest in Evangeline, which owns a 27-mile natural gas pipeline located      in southeast Louisiana. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Lou-Tex      Propylene owns a 263-mile pipeline used to transport chemical-grade      propylene from Sorrento, Louisiana to Mont Belvieu,  Texas. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Sabine      Propylene owns a 21-mile pipeline used to transport polymer-grade      propylene from Port Arthur, Texas to a pipeline interconnect in Cameron      Parish, Louisiana. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | South      Texas NGL owns a 297-mile pipeline system used to transport NGLs from our      Shoup and Armstrong NGL fractionation facilities in south Texas to Mont      Belvieu, Texas. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Enterprise      GC operates and owns: (i) two NGL fractionation facilities, the Shoup and      Armstrong, located in south Texas; (ii) a 1,020-mile NGL pipeline system      located in south Texas; and (iii) 1,112 miles of natural gas gathering      pipelines located in south and west Texas.  Enterprise GC’s      natural gas gathering pipelines include: (i) the 262-mile Big Thicket      Gathering System located in southeast Texas; (ii) the 660-mile Waha system      located in the Permian Basin of west Texas; and (iii) the 190-mile TPC      Offshore gathering system located in south  Texas. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Enterprise      Intrastate operates and owns an undivided 50% interest in the assets      comprising the 641-mile Channel natural gas pipeline, which extends from      the Agua Dulce Hub in south Texas to Sabine, Texas located on the      Texas/Louisiana border. |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Enterprise      Texas owns the 6,560-mile Enterprise Texas natural gas pipeline system,      which includes the Sherman Extension, and leases the Wilson natural gas      storage facility.  The Enterprise Texas system, along with the      Waha, TPC Offshore and Channel pipeline systems, comprise our Texas      Intrastate System. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| §   | Combined      financial information of the DEP I Midstream Businesses for the month of      January 2007.  The results of operations and cash flows of the      DEP I Midstream Businesses for this one-month period are allocated to the      former owners of these businesses that are under common control with      Duncan Energy Partners.  On February 5, 2007, these businesses      were contributed to Duncan Energy Partners in the DEP I drop down      transaction; therefore, the DEP I Midstream Businesses were consolidated      subsidiaries of Duncan Energy Partners for the eleven months ended      December 31, 2007.  For financial accounting and reporting      purposes, the effective date of the DEP I drop down transaction is      February 1, 2007.  EPO’s retained ownership in the DEP I      Midstream Businesses (following the drop down transaction) is presented in      our consolidated financial statements as “Noncontrolling interest in      subsidiaries – DEP I Midstream Businesses –  Parent.” |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Combined      financial information of the DEP II Midstream Businesses for the year      ended December 31, 2007.  The results of operations and cash      flows of the DEP II Midstream Businesses for this twelve-month period are      allocated to the former owners of these businesses that are under common      control with Duncan EnergyPartners. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Combined      financial information of the DEP II Midstream Businesses from January 1,      2008 through December 7, 2008.  The results of operations and      cash flows of the DEP II Midstream Businesses for this period are      allocated to the former owners of these businesses that are under common      control with Duncan EnergyPartners. |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| §   | Consolidated      financial information for Duncan Energy Partners for the twelve months      ended December 31, 2008, including the results of operations and cash      flows for the DEP II Midstream Businesses following completion of the DEP      II drop down transaction.  On December 8, 2008, the DEP II      Midstream Businesses were contributed to Duncan Energy Partners in the DEP      II drop down transaction; therefore, the DEP II Midstream Businesses      became consolidated subsidiaries of Duncan Energy Partners on this      date.  EPO’s retained ownership in the DEP II Midstream      Businesses (following the December 8, 2008 drop down transaction) is      presented in our consolidated financial statements as “Noncontrolling      interest in subsidiaries – DEP II Midstream Businesses –      Parent.” |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

Note 2.  Summary of Significant AccountingPolicies

|                                                                                   |   | For      Year Ended December 31, |   |
|----------------------------------------------------------------------------------------|--------|----------------------------------|--------|
|                                                                                   |   | 2009                             |   |   | 2008 |   |   | 2007 |   |
| Balance      at beginning of period                                                    |   | $                                | *      |   |   | $ | * |   |   | $ | 0.4 |   |
| Charges      to expense                                                                |   |                             | --     |   |   |   | -- |   |   |   | -- |   |
| Deductions                                                                             |   |                             | *      |   |   |   | -- |   |   |   | (0.4 | ) |
| Balance      at end of period                                                          |   | $                                | *      |   |   | $ | * |   |   | $ | * |   |
|                                                                                   |   |                             |   |   |   |   |   |   |   |   |   |   |
| *     Amounts      are negligible and less than $0.1 million. |   |

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|                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   | For      Year Ended December 31, |   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------------------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   | 2009                             |   |   | 2008 |   |   | 2007 |   |
| Balance      at beginning of period                                                                                                                                                                                                                                                                                                                                                                                                                               |   | $                                | 0.6    |   |   | $ | 17.8 |   |   | $ | 20.7 |   |
| Charges      to expense                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                             | 0.1    |   |   |   | 0.5 |   |   |   | 0.3 |   |
| Deductions      (1)                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |                             | (0.2   | ) |   |   | (17.7 | ) |   |   | (3.2 | ) |
| Balance      at end of period                                                                                                                                                                                                                                                                                                                                                                                                                                     |   | $                                | 0.5    |   |   | $ | 0.6 |   |   | $ | 17.8 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |                             |   |   |   |   |   |   |   |   |   |   |
| (1)        The      $17.7 million deduction in 2008 in the reserve balance is partially      comprised of a $5.0 million reduction in the reserve based on revised      estimates of future remediation costs and a remaining $6.3 million reserve      retained by EPO in connection with the DEP II drop down      transaction. In addition, we spent approximately $5.4 million for the      remediation of mercury site contamination in 2008. |   |

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|                                         |   | December      31, 2009 |   |   | December      31, 2008 |   |
|----------------------------------------------|--------|------------------------|--------|--------|------------------------|--------|
|                                         |   | Carrying               |   |   | Fair                   |   |   | Carrying |   |   | Fair |   |
| Financial      Instruments                   |   | Value                  |   |   | Value                  |   |   | Value |   |   | Value |   |
| Financial      assets:                       |   |                   |   |   |                   |   |   |   |   |   |   |   |
| Cash      and cash equivalents               |   | $                      | 3.9    |   |                   | $      | 3.9 |   |   | $ | 13.0 |   |   | $ | 13.0 |   |
| Accounts      receivable                     |   |                   | 142.0  |   |                   |   | 142.0 |   |   |   | 156.3 |   |   |   | 156.3 |   |
| Financial      liabilities:                  |   |                   |   |   |                   |   |   |   |   |   |   |   |   |   |   |   |
| Accounts      payable and accrued expenses   |   | $                      | 145.5  |   |                   | $      | 145.5 |   |   | $ | 220.0 |   |   | $ | 220.0 |   |
| Other      current liabilities               |   |                   | 18.9   |   |                   |   | 18.9 |   |   |   | 33.3 |   |   |   | 33.3 |   |
| Variable-rate      revolving credit facility |   |                   | 175.0  |   |                   |   | 175.0 |   |   |   | 202.0 |   |   |   | 202.0 |   |
| Variable-rate      term loan                 |   |                   | 282.3  |   |                   |   | 282.3 |   |   |   | 282.3 |   |   |   | 282.3 |   |

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|                                                                                                                                  |   | December      31, |   |
|---------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------|--------|
|                                                                                                                                  |   | 2009              |   |   | 2008 |   |
| Natural      gas imbalance receivables                                                                                                |   | $                 | 9.8    |   |   | $ | 35.7 |   |
| Natural      gas imbalance payables (1)                                                                                               |   |              | 11.0   |   |   |   | 43.6 |   |
|                                                                                                                                  |
| (1)        Reflected      as a component of “Accrued product payables” on our Consolidated Balance      Sheets. |   |

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Note 3.  Recent Accounting Developments

| §   | Effective      with the first quarter of 2010, additional disclosures will be required      regarding the reporting of transfers of fair value information between the      three levels of the fair value hierarchy (i.e., Levels 1, 2 and      3). |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Effective      with the first quarter of 2011, companies will need to present purchases,      sales, issuances and settlements whose fair values are based on      unobservable inputs on a grossbasis. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

Note 4.  Revenue Recognition

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Note 5.  Equity-based Awards

|                                                                                                                                                                                                                             |   | For      Year Ended December 31, |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------------------------------|--------|
|                                                                                                                                                                                                                             |   | 2009                             |   |   | 2008 |   |   | 2007 |   |
| Restricted      unit awards (1)                                                                                                                                                                                                  |   | $                                | 1.4    |   |   | $ | 0.7 |   |   | $ | 0.3 |   |
| Unit      option awards (1)                                                                                                                                                                                                      |   |                             | 0.2    |   |   |   | -- |   |   |   | -- |   |
| Profits      interests awards (1)                                                                                                                                                                                                |   |                             | 0.6    |   |   |   | 0.2 |   |   |   | 0.2 |   |
| Total      compensation expense                                                                                                                                                                                                  |   | $                                | 2.2    |   |   | $ | 0.9 |   |   | $ | 0.5 |   |
|                                                                                                                                                                                                                             |   |                             |   |   |   |   |   |   |   |   |   |   |
| (1)        Accounted      for as equity-classified awards. The fair value of an      equity-classified award is amortized to earnings on a straight-line basis      over the requisite service or vesting period. |   |

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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |           |      |   | Weighted-            |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------------|-----------|--------|----------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |           |      |   | Average      Grant   |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   | Number      of |      |   | Date      Fair Value |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   | Units          |      |   | per Unit    (1)      |   |
| Restricted      units at December 31, 2006                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |           | 1,105,237 |   |                 | $      | 24.79 |   |
| Granted      (2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |           | 738,040   |   |                 | $      | 30.64 |   |
| Vested                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |           | (4,884    | )      |                 | $      | 25.28 |   |
| Settled      or forfeited (3)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |           | (149,853  | )      |                 | $      | 23.31 |   |
| Restricted      units at December 31, 2007                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |           | 1,688,540 |   |                 | $      | 27.23 |   |
| Granted      (4)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |           | 766,200   |   |                 | $      | 30.73 |   |
| Vested                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |           | (285,363  | )      |                 | $      | 23.11 |   |
| Forfeited                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |           | (88,777   | )      |                 | $      | 26.98 |   |
| Restricted      units at December 31, 2008                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |           | 2,080,600 |   |                 | $      | 29.09 |   |
| Granted      (5)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |           | 1,025,650 |   |                 | $      | 24.89 |   |
| Vested                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |           | (281,500  | )      |                 | $      | 26.70 |   |
| Forfeited                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |           | (411,884  | )      |                 | $      | 28.37 |   |
| Awards      assumed in connection with TEPPCO Merger                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |           | 308,016   |   |                 | $      | 27.64 |   |
| Restricted      units at December 31, 2009                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |           | 2,720,882 |   |                 | $      | 27.70 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |           |      |   |                 |   |   |   |
| (1)        Determined      by dividing the aggregate grant date fair value of awards before an      allowance for forfeitures by the number of awards issued. With      respect to restricted unit awards assumed in connection with the TEPPCO      Merger, the weighted-average grant date fair value per unit was determined      by dividing the aggregate grant date fair value of the assumed awards      before an allowance for forfeitures by the number of awards      assumed.(2)        Aggregate      grant date fair value of restricted unit awards issued during 2007 was      $22.6 million based on grant date market prices of Enterprise Products      Partners’ common units ranging from $28.00 to $31.83 per      unit. Estimated forfeiture rates ranging between 4.6% and 17% were      applied to these awards.(3)        Reflects      the settlement of 113,053 restricted units in connection with the      resignation of EPGP’s former chief executive officer.(4)        Aggregate      grant date fair value of restricted unit awards issued during 2008 was      $23.5 million based on grant date market prices of Enterprise Products      Partners’ common units ranging from $25.00 to $32.31 per unit. An      estimated forfeiture rate of 17% was applied to these awards.(5)        Aggregate      grant date fair value of restricted unit awards issued during 2009 was      $25.5 million based on grant date market prices of Enterprise Products      Partners’ common units ranging from $20.08 to $28.73 per      unit. Estimated forfeiture rates ranging between 4.6% and 17% were      applied to these awards. |   |

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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |           |      |   |              |   |   | Weighted-            |   |   |      |   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------------|-----------|--------|-------------------|--------|--------|----------------------|--------|--------|-----------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |           |      |   | Weighted-         |   |   | Average              |   |   |      |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |           |      |   | Average           |   |   | Remaining            |   |   | Aggregate |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   | Number      of |      |   | Strike      Price |   |   | Contractual          |   |   | Intrinsic |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   | Units          |      |   | (dollars/unit)    |   |   | Term      (in years) |   |   | Value(1)  |   |
| Outstanding      at December 31, 2006                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |           | 2,416,000 |   |              | $      | 23.32  |                 |   |   |      |   |   |   |
| Granted      (2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |           | 895,000   |   |              |   | 30.63  |                 |   |   |      |   |   |   |
| Exercised                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |           | (256,000  | )      |              |   | 19.26  |                 |   |   |      |   |   |   |
| Settled      or forfeited (3)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |           | (740,000  | )      |              |   | 24.62  |                 |   |   |      |   |   |   |
| Outstanding      at December 31, 2007                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |           | 2,315,000 |   |              |   | 26.18  |                 |   |   |      |   |   |   |
| Granted      (4)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |           | 795,000   |   |              |   | 30.93  |                 |   |   |      |   |   |   |
| Exercised                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |           | (61,500   | )      |              |   | 20.38  |                 |   |   |      |   |   |   |
| Forfeited                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |           | (85,000   | )      |              |   | 26.72  |                 |   |   |      |   |   |   |
| Outstanding      at December 31, 2008                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |           | 2,963,500 |   |              |   | 27.56  |                 |   |   |      |   |   |   |
| Granted      (5)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |           | 1,460,000 |   |              |   | 23.46  |                 |   |   |      |   |   |   |
| Exercised                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |           | (261,000  | )      |              |   | 19.61  |                 |   |   |      |   |   |   |
| Forfeited                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |           | (930,540  | )      |              |   | 26.69  |                 |   |   |      |   |   |   |
| Awards      assumed in connection with TEPPCO Merger                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |           | 593,960   |   |              |   | 26.12  |                 |   |   |      |   |   |   |
| Outstanding at December 31,      2009 (6)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |           | 3,825,920 |   |              |   | 26.52  |                 |   |   | 4.6       |   |   | $ | 2.8 |   |
| Options      exercisable at:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |           |      |   |              |   |   |                 |   |   |      |   |   |   |   |   |
| December      31, 2007                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |           | 335,000   |   |              | $      | 22.06  |                 |   |   | 4.0       |   |   | $ | 3.3 |   |
| December      31, 2008                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |           | 548,500   |   |              | $      | 21.47  |                 |   |   | 4.1       |   |   | $ | -- |   |
| December      31, 2009 (6)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   |           | 447,500   |   |              | $      | 25.09  |                 |   |   | 4.8       |   |   | $ | 2.8 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |           |      |   |              |   |   |                 |   |   |      |   |   |   |   |   |
| (1)        Aggregate      intrinsic value reflects fully vested unit options at the date      indicated.(2)        Aggregate      grant date fair value of these unit options issued during 2007 was $2.4      million based on the following assumptions: (i) a weighted-average grant      date market price of Enterprise Products Partners’ common units of $30.63      per unit; (ii) expected life of options of 7.0 years; (iii)      weighted-average risk-free interest rate of 4.8%; (iv) weighted-average      expected distribution yield on Enterprise Products Partners’ common units      of 8.4%; and (v) weighted-average expected unit price volatility on      Enterprise Products Partners’ common units of 23.2%.(3)        Includes      the settlement of 710,000 options in connection with the resignation of      EPGP’s chief executive officer.(4)        Aggregate      grant date fair value of these unit options issued during 2008 was $1.9      million based on the following assumptions: (i) a grant date market price      of Enterprise Products Partners’ common units of $30.93 per unit; (ii)      expected life of options of 4.7 years; (iii) a risk-free interest rate of      3.3%; (iv) an expected distribution yield on Enterprise Products Partners’      common units of 7.0%; and (v) an expected unit price volatility on      Enterprise Products Partners’ common units of 19.8%. An estimated      forfeiture rate of 17.0% was applied to awards granted during      2008.(5)        Aggregate      grant date fair value of these unit options issued during 2009 was $8.1      million based on the following assumptions: (i) a weighted-average grant      date market price of Enterprise Products Partners’ common units of $23.46      per unit; (ii) weighted-average expected life of options of 4.8 years;      (iii) weighted-average risk-free interest rate of 2.1%; (iv)      weighted-average expected distribution yield on Enterprise Products      Partners’ common units of 9.4%; and (v) weighted-average expected unit      price volatility on Enterprise Products Partners’ common units of      57.4%. An estimated forfeiture rate of 17.0% was applied to awards      granted during 2009.(6)        Enterprise      Products Partners was committed to issue 3,825,920 and 2,963,500 of      Enterprise Products Partners’ common units at December 31, 2009 and 2008,      respectively, if all outstanding options awarded (as of these dates) were      exercised. Of the option awards outstanding at December 31, 2009, an      additional 410,000, 712,280, 736,000 and 1,520,140 are exercisable in      2010, 2012, 2013 and 2014, respectively. |   |

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|                                                                                                                                                                  |                                         | Initial             |   | Class      A              |   |                                        |                       |               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------|---------------------|--------|---------------------------|--------|---------------------------------------------|----------------------------|--------------------|
|                                                                                                                                                                  |                                         | Class      A        |   | Partner                   |   |                                        | Grant      Date            | Unrecognized       |
| Employee                                                                                                                                                              | Description                                  | Capital             |   | Preferred                 |   | Liquidation                                 | Fair      Value            | Compensation       |
| Partnership                                                                                                                                                           | of      Assets                               | Base                |   | Return                    |   |      Date      (1) |   of      Awards | Cost               |
|                                                                                                                                                                  |                                         |                |   |                      |   |                                        |                       |               |
| EPE      Unit I                                                                                                                                                       | 1,821,428      EPE units                     | $51.0      million  |   | 4.50% to      5.725% |   | February      2016                          | $21.5      million         | $12.1      million |
|                                                                                                                                                                  |                                         |                |   |                      |   |                                        |                       |               |
| EPE      Unit II                                                                                                                                                      | 40,725      EPE units                        | $1.5      million   |   | 4.50% to      5.725% |   | February      2016                          | $0.4      million          | $0.3      million  |
|                                                                                                                                                                  |                                         |                |   |                      |   |                                        |                       |               |
| EPE      Unit III                                                                                                                                                     | 4,421,326      EPE units                     | $170.0      million |   |                      | 3.80%  |                                        | February      2016         | $42.8      million | $30.8      million |
|                                                                                                                                                                  |                                         |                |   |                      |   |                                        |                       |               |   |
| Enterprise      Unit                                                                                                                                                  | 881,836      EPE units844,552      EPD units | $51.5      million  |   |                      | 5.00%  |                                        | February      2016         | $6.5      million  | $5.3      million |
|                                                                                                                                                                  |                                         |                |   |                      |   |                                        |                       |               |   |
| EPCO      Unit                                                                                                                                                        | 779,102      EPD units                       | $17.0      million  |   |                      | 4.87%  |                                        | February      2016         | $8.1      million  | $6.5      million |
|                                                                                                                                                                  |                                         |                |   |                      |   |                                        |                       |               |   |
| (1)        The      liquidation date may be accelerated for change of control and other events      as described in the underlying partnership  agreements. |

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|                                                                                                                                                                                                                                            |   | For      Year Ended December 31, |   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------------------------------|--------|
|                                                                                                                                                                                                                                            |   | 2009                             |   |   | 2008 |   |   | 2007 |   |
| Aggregate      grant date fair values at beginning of period                                                                                                                                                                                    |   | $                                | 64.6   |   |   | $ | 35.4 |   |   | $ | 12.8 |   |
| New      Employee Partnership grants (1,2)                                                                                                                                                                                                      |   |                             | --     |   |   |   | 14.6 |   |   |   | 23.0 |   |
| Award      modifications                                                                                                                                                                                                                        |   |                             | 19.5   |   |   |   | 15.0 |   |   |   | -- |   |
| Other      adjustments, primarily forfeiture and regrant activity (2)                                                                                                                                                                           |   |                             | (4.8   | ) |   |   | (0.4 | ) |   |   | (0.4 | ) |
| Aggregate      grant date fair value at end of period                                                                                                                                                                                           |   | $                                | 79.3   |   |   | $ | 64.6 |   |   | $ | 35.4 |   |
|                                                                                                                                                                                                                                            |   |                             |   |   |   |   |   |   |   |   |   |   |
| (1)        EPE      Unit III was formed in 2007 and EPCO Unit and Enterprise Unit were formed      in 2008.(2)        TEPPCO      Unit L.P. and TEPPCO Unit II L.P. were formed during 2008 and dissolved      during 2009. |   |

|                 | Expected          | Risk-Free         | Expected           | Expected      Unit  |
|----------------------|-------------------|-------------------|--------------------|---------------------|
| Employee             | Life              | Interest          | Distribution       | Price               |
| Partnership          | of      Award     | Rate              | Yield              | Volatility          |
|                 |              |              |               |                |
| EPE      Unit I      | 3      to 6 years | 1.2%      to 5.0% | 3.0%      to 6.7%  | 16.6%      to 35.0% |
| EPE      Unit II     | 4      to 6 years | 1.6%      to 4.4% | 3.8%      to 6.4%  | 18.7%      to 31.7% |
| EPE      Unit III    | 4      to 6 years | 1.4%      to 4.9% | 4.0%      to 6.4%  | 16.6%      to 32.2% |
| Enterprise      Unit | 4      to 6 years | 1.4%      to 3.9% | 4.5%      to 8.4%  | 15.3%      to 31.7% |
| EPCO      Unit       | 4      to 6 years | 1.6%      to 2.4% | 8.1%      to 11.1% | 27.0%      to 50.0% |

Note 6.  Derivative Instruments, Hedging Activities andFair Value Measurements

| §   | Changes      in the fair value of a recognized asset or liability, or an unrecognized      firm commitment - In a fair value hedge, gains and losses for both the      derivative instrument and the hedged item are recognized in income during      the period of change. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Variable      cash flows of a forecasted transaction - In a cash flow hedge, the      effective portion of the hedge is reported in other comprehensive income      (“OCI”) and is reclassified into earnings when the forecasted transaction      affects earnings. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|                                                                                                                         |   | Number        |   | Period      Covered | Termination                 | Variable      to    | Notional                       |
|------------------------------------------------------------------------------------------------------------------------------|--------|---------------|--------|---------------------|-----------------------------|---------------------|--------------------------------|
| Hedged      Variable Rate Debt                                                                                               |   | of      Swaps |   | by      Swap        | Date      of Swap           | Fixed Rate      (1) | Value                          |
| Revolving      Credit Facility, due Feb. 2011                                                                                |   |          | 3      |                | Sep.      2007 to Sep. 2010 | Sep.      2010      | 0.25%  to      4.62% | $175.0      million |
|                                                                                                                         |   |          |   |                |                        |                |                           |   |
| (1)        Amounts      receivable from or payable to the swap counterparties are settled every      three months. |

|                                                                            | Volume       | Accounting |
|---------------------------------------------------------------------------------|--------------|------------|
| Derivative      Purpose                                                         | Current      | Long-Term  | Treatment |
|                                                                            |         |       |   |
| Derivatives      not designated as hedging instruments:                         |         |       |   |
|    Acadian      Gas:                                             |         |       |   |
|       Natural      gas risk management activities | 2.2      Bcf | n/a        | Mark-to-market |

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|                                                    | Asset      Derivatives    |   | Liability      Derivatives |   |
|---------------------------------------------------------|---------------------------|--------|----------------------------|--------|
|                                                    | December      31, 2009    |   | December      31, 2008     |   | December      31, 2009 |   | December      31, 2008 |   |
|                                                    | Balance      Sheet        |   | Fair                       |   | Balance      Sheet |   | Fair |   | Balance      Sheet |   | Fair |   | Balance      Sheet |   | Fair |   |
|                                                    | Location                  |   | Value                      |   | Location |   | Value |   | Location |   | Value |   | Location |   | Value |   |
|                                                    |                      |
| Derivatives designated as hedging      instruments:     |                      |
| Interest      rate derivatives                          | Other      current assets |   | $                          | --     |   | Other      current assets |   | $ | -- |   | Other      current liabilities |   | $ | 5.5 |   | Other      current liabilities |   | $ | 5.9 |   |
|                                                    |                      |   |                       |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Interest      rate derivatives                          | Other      assets         |   |                       | --     |   | Other      assets |   |   | -- |   | Other      liabilities |   |   | -- |   | Other      liabilities |   |   | 3.9 |   |
|                                                    |                      |   |                       |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total      derivatives                                  |                      |   |                       |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| designated      as hedging                              |                      |   |                       |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| instruments                                             |                      |   | $                          | --     |   |   |   | $ | -- |   |   |   | $ | 5.5 |   |   |   | $ | 9.8 |   |
|                                                    |                      |   |                       |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Derivatives not designated as hedging      instruments: |                      |
| Commodity      derivatives                              | Other      current assets |   | $                          | 0.1    |   | Other      current assets |   | $ | 1.9 |   | Other      current liabilities |   | $ | 0.1 |   | Other      current liabilities |   | $ | 2.0 |   |
| Total      derivatives not                              |                      |   |                       |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| designated      as hedging                              |                      |   |                       |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| instruments                                             |                      |   | $                          | 0.1    |   |   |   | $ | 1.9 |   |   |   | $ | 0.1 |   |   |   | $ | 2.0 |   |

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|                       |   | Change      in Value       |   |
|----------------------------|--------|----------------------------|--------|
| Derivatives      in        |   | Recognized      in OCI on  |   |
| Cash      Flow             |   | Derivative                 |   |
| Hedging      Relationships |   | (Effective      Portion)   |   |
|                       |   | For      the Twelve Months |   |
|                       |   | Ended      December 31,    |   |
|                       |   | 2009                       |   |   | 2008 |   |
| Interest      rate         |   | $                          | (2.5   | ) |   | $ | (8.0 | ) |
| Commodity                  |   |                       | --     |   |   |   | (0.7 | ) |
| Total                      |   | $                          | (2.5   | ) |   | $ | (8.7 | ) |

| Derivatives      in                      | Location      of LossReclassified from      AOCI |   | Amount      of LossReclassified from      AOCI |   |
|------------------------------------------|--------------------------------------------------|--------|------------------------------------------------|--------|
| Cash      FlowHedging      Relationships | into      Income (Effective      Portion)        |   |  into      Income(Effective      Portion) |   |
|                                     |                                             |   | For      the Twelve Months                     |   |
|                                     |                                             |   | Ended      December 31,                        |   |
|                                     |                                             |   | 2009                                           |   |   | 2008 |   |
| Interest      rate                       | Interest      expense                            |   | $                                              | (6.6   | ) |   | $ | (2.0 | ) |
| Commodity                                | Operating      Revenue                           |   |                                           | --     |   |   |   | (0.7 | ) |
| Total                                    |                                             |   | $                                              | (6.6   | ) |   | $ | (2.7 | ) |

|                                                                          |                  |   | Amount      of Gain                    |   |
|-------------------------------------------------------------------------------|-----------------------|--------|----------------------------------------|--------|
| Derivatives      in Cash Flow                                                 |                  |   | Recognized      in Income on           |   |
| Hedging      Relationships                                                    | Location              |   | Ineffective      Portion of Derivative |   |
|                                                                          |                  |   | For      the Twelve Months             |   |
|                                                                          |                  |   | Ended      December 31,                |   |
|                                                                          |                  |   | 2009                                   |   |   | 2008 |   |
| Interest      rate derivatives                                                | Interest      expense |   | $                                      | 0.1    |   |   | $ | * |   |
|    Total                                                       |                  |   | $                                      | 0.1    |   |   | $ | * |   |
|                                                                          |                  |   |                                   |   |   |   |   |   |   |
| *      Indicates that amounts are negligible and less than $0.1      million. |                  |

|                            |     |   | Gain/(Loss)      Recognized in |
|---------------------------------|----------|--------|--------------------------------|
| Derivatives      Not Designated |     |   | Income      on Derivative      |   |
| as      Hedging Instruments     | Location |   | Amount                         |   |
|                            |     |   | For      the Twelve Months     |   |
|                            |     |   | Ended      December 31,        |   |
|                            |     |   | 2009                           |   |   | 2008 |   |
| Commodity      derivatives      | Revenue  |   | $                              | (0.6 | ) |   | $ | 0.7 |   |
|    Total         |     |   | $                              | (0.6 | ) |   | $ | 0.7 |   |

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| §   | Level      1 fair values are based on quoted prices, which are available in active      markets for identical assets or liabilities as of the measurement      date.  Active markets are defined as those in which transactions      for identical assets or liabilities occur with sufficient frequency so as      to provide pricing information on an ongoing basis (e.g., the New York      Mercantile Exchange).  Our Level 1 fair values primarily consist      of financial assets and liabilities such as exchange-traded commodity      financial instruments. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Level      2 fair values are based on pricing inputs other than quoted prices in      active markets (as reflected in Level 1 fair values) and are either      directly or indirectly observable as of the measurement      date.  Level 2 fair values include instruments that are valued      using financial models or other appropriate valuation      methodologies.  Such financial models are primarily      industry-standard models that consider various assumptions, including      quoted forward prices for commodities, the time value of money, volatility      factors, current market and contractual prices for the underlying      instruments and other relevant economic measures.  Substantially      all of these assumptions are: (i) observable in the marketplace throughout      the full term of the instrument; (ii) can be derived from observable data;      or (iii) are validated by inputs other than quoted prices (e.g., interest      rate and yield curves at commonly quoted intervals).  Our Level      2 fair values primarily consist of commodity financial instruments such as      forwards, swaps and other instruments transacted on an exchange or over      the counter.  The fair values of these derivatives are based on      observable price quotes for similar products and locations.  Our      interest rate derivatives are valued by using appropriate financial models      with the implied forward London Interbank Offered Rate (“LIBOR”) yield      curve for the same period as the future interest swap      settlements. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | Level      3 fair values are based on unobservable inputs.  Unobservable      inputs are used to measure fair value to the extent that observable inputs      are not available, thereby allowing for situations in which there is      little, if any, market activity for the asset or liability at the      measurement date.  Unobservable inputs reflect the reporting      entity’s own ideas about the assumptions that market participants would      use in pricing an asset or liability (including assumptions about      risk).  Unobservable inputs are based on the best information      available in the circumstances, which might include the reporting entity’s      internally developed data.  The reporting entity must not ignore      information about market participant assumptions that is reasonably      available without undue cost and effort.  Level 3 inputs are      typically used in connection with internally developed valuation      methodologies where management makes its best estimate of an instrument’s      fair value.  Level 3 generally includes specialized or unique      financial instruments that are tailored to meet a customer’s specific      needs.  At December 31, 2009, we did not have any Level 3      financial assets or liabilities. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|                                                                          |   | At      December 31, 2009 |    |
|-------------------------------------------------------------------------------|--------|---------------------------|---------|
|                                                                          |   | Level      1              |    |   | Level      2 |   |   | Total |   |
| Financial      assets:                                                        |   |                      |    |   |   |   |   |   |   |
| Commodity      derivative instruments                                         |   | $                         | 0.1     |   |   | $ | * |   |   | $ | 0.1 |   |
|                                                                          |   |                      |    |   |   |   |   |   |   |   |   |   |
| Financial      liabilities:                                                   |   |                      |    |   |   |   |   |   |   |   |   |   |
| Commodity      derivative instruments                                         |   | $                         | *  |   |   | $ | 0.1 |   |   | $ | 0.1 |   |
| Interest      rate derivative instruments                                     |   |                      | --      |   |   |   | 5.5 |   |   |   | 5.5 |   |
| Total      derivative liabilities                                             |   | $                         | *  |   |   | $ | 5.6 |   |   | $ | 5.6 |   |
|                                                                          |   |
| *      Indicates that amounts are negligible and less than $0.1      million. |   |

|                                                                          |   | At      December 31, 2008 |   |
|-------------------------------------------------------------------------------|--------|---------------------------|--------|
|                                                                          |   | Level      1              |   |   | Level      2 |   |   | Total |   |
| Financial      assets:                                                        |   |                      |   |   |   |   |   |   |   |
| Commodity      derivative instruments                                         |   | $                         | *      |   |   | $ | 1.9 |   |   | $ | 1.9 |   |
|                                                                          |   |                      |   |   |   |   |   |   |   |   |   |   |
| Financial      liabilities:                                                   |   |                      |   |   |   |   |   |   |   |   |   |   |
| Commodity      derivative instruments                                         |   | $                         | 1.9    |   |   | $ | 0.1 |   |   | $ | 2.0 |   |
| Interest      rate derivative instruments                                     |   |                      | --     |   |   |   | 9.8 |   |   |   | 9.8 |   |
| Total      derivative liabilities                                             |   | $                         | 1.9    |   |   | $ | 9.9 |   |   | $ | 11.8 |   |
|                                                                          |   |
| *      Indicates that amounts are negligible and less than $0.1      million. |   |

|                               |   | Level      3 |   |   | ImpairmentCharges |   |
|------------------------------------|--------|--------------|--------|--------|-------------------|--------|
| Property,      plant and equipment |   | $            | 1.8    |   |              | $      | 4.2 |   |

Note 7.  Inventories

|                                                                                                                                                                                                                                                                                               |   | December      31, |   |   | December      31, |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------|--------|--------|-------------------|--------|
|                                                                                                                                                                                                                                                                                               |   | 2009              |   |   | 2008              |   |
| Working      inventory (1)                                                                                                                                                                                                                                                                         |   | $                 | 4.4    |   |              | $      | 18.3 |   |
| Forward      sales inventory (2)                                                                                                                                                                                                                                                                   |   |              | 6.1    |   |              |   | 9.7 |   |
| Total      inventory                                                                                                                                                                                                                                                                               |   | $                 | 10.5   |   |              | $      | 28.0 |   |
|                                                                                                                                                                                                                                                                                               |   |              |   |   |              |   |   |   |
| (1)   Working      inventory is comprised of inventories of natural gas that are used in the      provision for services.(2)        Forward      sales inventory consists of identified natural gas volumes dedicated to      the fulfillment of forward sales contracts. |   |

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| §   | Write-downs      of natural gas inventories are recorded as an expense related to our      natural gas pipeline operations within our Natural Gas Pipelines &      Services business segment. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|                                                                                                                                                                                                                                                               |   | For      Year Ended December 31, |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------------------------------|--------|
|                                                                                                                                                                                                                                                               |   | 2009                             |   |   | 2008 |   |   | 2007 |   |
| Cost      of sales (1)                                                                                                                                                                                                                                             |   | $                                | 490.0  |   |   | $ | 1,122.4 |   |   | $ | 811.4 |   |
| LCM      adjustments                                                                                                                                                                                                                                               |   |                             | *      |   |   |   | 1.8 |   |   |   | 0.3 |   |
|                                                                                                                                                                                                                                                               |   |                             |
| (1)        Cost      of sales is included in operating costs and expenses, as presented on our      Statements of Consolidated Operations. The fluctuation in this amount      year-to-year is primarily due to changes in natural gas      prices. |   |

|          *         We recognized nominal LCM adjustments for the year ended December      31, 2009. |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|

Note 8.  Property, Plant and Equipment

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   | Estimated      Useful |                               |   | At      December 31, |   |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------------|------------------------------------|--------|----------------------|--------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   | Life      in Years    |                               |   | 2009                 |   |   | 2008 |   |
| Plant      and pipeline facilities (1)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |                  | 3-45(4)                            |   |                 | $      | 4,767.0 |   |   | $ | 4,175.0 |   |
| Underground      storage wells and related assets (2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |                  | 5-35(5)                            |   |                 |   | 432.5 |   |   |   | 407.9 |   |
| Transportation      equipment (3)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   |                  | 3-10      |   |                 |   | 11.3 |   |   |   | 10.3 |   |
| Land                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                  |                               |   |                 |   | 27.8 |   |   |   | 23.9 |   |
| Construction      in progress                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |                  |                               |   |                 |   | 233.6 |   |   |   | 459.0 |   |
|     Total                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |                  |                               |   |                 |   | 5,472.2 |   |   |   | 5,076.1 |   |
|  Less      accumulated depreciation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                  |                               |   |                 |   | 922.6 |   |   |   | 745.9 |   |
|     Property,      plant and equipment, net                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |                  |                               |   |                 | $      | 4,549.6 |   |   | $ | 4,330.2 |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |                  |                               |   |                 |   |   |   |   |   |   |   |
| (1)        Includes      natural gas, NGL and petrochemical pipelines, NGL fractionation plants,      office furniture and equipment, buildings, and relatedassets.(2)        Underground      storage facilities include underground product storage caverns and related      assets such as pipes and compressors.(3)        Transportation      equipment includes vehicles and similar assets used in our      operations.(4)        In      general, the estimated useful life of major components of this category      is: pipelines, 18-45 years (with some equipment at 5 years); office      furniture and equipment, 3-20 years; and buildings 20-35      years.(5)        In      general, the estimated useful life of underground storage facilities is      20-35 years (with some components at 5 years). |   |

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| ARO      liability balance, December 31, 2007            |   | $      | 8.1  |   |
|----------------------------------------------------------|--------|--------|------|--------|
|    Liabilities      incurred              |   |   | 1.3  |   |
|    Liabilities      settled               |   |   | (5.3 | )      |
|    Accretion      expense                 |   |   | 0.3  |   |
|    Revisions      in estimated cash flows |   |   | 0.2  |   |
| ARO      liability balance, December 31, 2008            |   | $      | 4.6  |   |
|    Liabilities      settled               |   |   | (0.7 | )      |
|    Accretion      expense                 |   |   | 0.6  |   |
|    Revisions      in estimated cash flows |   |   | 5.9  |   |
| ARO      liability balance, December 31, 2009            |   | $      | 10.4 |   |

| 2010 |   |   | 2011   |   |   | 2012   |   |   | 2013 |   |   | 2014 |   |
|------|--------|--------|--------|--------|--------|--------|--------|--------|------|--------|--------|------|--------|
| $    | 0.7    |   |   | $      | 0.6    |   |   | $      | 0.6  |   |   | $    | 0.7    |   |   | $ | 0.8 |   |

Note 9.  Investment in Evangeline

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|                                           |   | At      December 31, |   |
|------------------------------------------------|--------|----------------------|--------|
|                                           |   | 2009                 |   |   | 2008 |   |
| BALANCE      SHEET DATA:                       |   |                 |   |   |   |   |
| Current      assets                            |   | $                    | 24.4   |   |   | $ | 33.5 |   |
| Property,      plant and equipment, net        |   |                 | 3.2    |   |   |   | 4.2 |   |
| Other      assets                              |   |                 | 13.5   |   |   |   | 17.5 |   |
| Total      assets                              |   | $                    | 41.1   |   |   | $ | 55.2 |   |
|                                           |   |                 |   |   |   |   |   |   |
| Current      liabilities                       |   | $                    | 10.6   |   |   | $ | 24.2 |   |
| Other      liabilities                         |   |                 | 17.7   |   |   |   | 20.4 |   |
| Consolidated      equity                       |   |                 | 12.8   |   |   |   | 10.6 |   |
| Total      liabilities and consolidated equity |   | $                    | 41.1   |   |   | $ | 55.2 |   |

|                        |   | For      the Year Ended December 31, |   |
|-----------------------------|--------|--------------------------------------|--------|
|                        |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| INCOME      STATEMENT DATA: |   |                                 |   |   |   |   |   |   |   |
| Revenues                    |   | $                                    | 164.5  |   |   | $ | 371.8 |   |   | $ | 272.9 |   |
| Operating      income       |   |                                 | 3.7    |   |   |   | 7.2 |   |   |   | 6.3 |   |
| Net      income             |   |                                 | 2.2    |   |   |   | 1.8 |   |   |   | 0.4 |   |

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Note 10.  Intangible Assets and Goodwill

|                                                |   | At      December 31, 2009 |   |   | At      December 31, 2008 |   |
|-----------------------------------------------------|--------|---------------------------|--------|--------|---------------------------|--------|
|                                                |   | Gross                     |   |   | Accum.                    |   |   | Carrying |   |   | Gross |   |   | Accum. |   |   | Carrying |   |
|                                                |   | Value                     |   |   | Amort.                    |   |   | Value |   |   | Value |   |   | Amort. |   |   | Value |   |
| NGL      Pipelines & Services:                  |   |                      |   |   |                      |   |   |   |   |   |   |   |   |   |   |   |   |   |
|         Customer relationship intangibles |   | $                         | 24.6   |   |                      | $      | (8.9 | ) |   | $ | 15.7 |   |   | $ | 24.6 |   |   | $ | (6.4 | ) |   | $ | 18.2 |   |
|         Contract based intangibles        |   |                      | 40.8   |   |                      |   | (24.7 | ) |   |   | 16.1 |   |   |   | 40.8 |   |   |   | (20.1 | ) |   |   | 20.7 |   |
| Natural      Gas Pipelines & Services:          |   |                      |   |   |                      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|         Customer relationship intangibles |   |                      | 21.0   |   |                      |   | (9.0 | ) |   |   | 12.0 |   |   |   | 21.0 |   |   |   | (7.6 | ) |   |   | 13.4 |   |
|         Total all segments                |   | $                         | 86.4   |   |                      | $      | (42.6 | ) |   | $ | 43.8 |   |   | $ | 86.4 |   |   | $ | (34.1 | ) |   | $ | 52.3 |   |

|                                      |   | For      the Year Ended December 31, |   |
|-------------------------------------------|--------|--------------------------------------|--------|
|                                      |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| NGL      Pipelines & Services         |   | $                                    | 7.1    |   |   | $ | 7.6 |   |   | $ | 5.5 |   |
| Natural      Gas Pipelines & Services |   |                                 | 1.4    |   |   |   | 1.5 |   |   |   | 1.7 |   |
|         Total segments          |   | $                                    | 8.5    |   |   | $ | 9.1 |   |   | $ | 7.2 |   |

|                                      |   | For      the Year Ended December 31, |   |
|-------------------------------------------|--------|--------------------------------------|--------|
|                                      |   | 2010                                 |   |   | 2011 |   |   | 2012 |   |   | 2013 |   |   | 2014 |   |
| NGL      Pipelines & Services         |   | $                                    | 6.7    |   |   | $ | 6.4 |   |   | $ | 2.9 |   |   | $ | 1.7 |   |   | $ | 1.5 |   |
| Natural      Gas Pipelines & Services |   |                                 | 1.3    |   |   |   | 1.2 |   |   |   | 1.1 |   |   |   | 1.0 |   |   |   | 0.9 |   |
| Total      segments                       |   | $                                    | 8.0    |   |   | $ | 7.6 |   |   | $ | 4.0 |   |   | $ | 2.7 |   |   | $ | 2.4 |   |

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Note 11. Debt Obligations

|                                                             |   | At      December 31, |   |
|------------------------------------------------------------------|--------|----------------------|--------|
|                                                             |   | 2009                 |   |   | 2008 |   |
| Revolving      Credit Facility, variable rate, due February 2011 |   | $                    | 175.0  |   |   | $ | 202.0 |   |
| Term      Loan Agreement, variable rate, due December 2011       |   |                 | 282.3  |   |   |   | 282.3 |   |
| Total      principal amount of long-term debt obligations        |   | $                    | 457.3  |   |   | $ | 484.3 |   |

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|                                                             |   | Weighted-average        |    |
|------------------------------------------------------------------|--------|-------------------------|---------|
|                                                             |   | interest      rate paid |    |
| Revolving      Credit Facility, variable rate, due February 2011 |   |                    | 1.4754% |   |
| Term      Loan Agreement, variable rate, due December 2011       |   |                    | 1.1486% |   |

|                                                                                                      |   | At      December 31, |   |
|-----------------------------------------------------------------------------------------------------------|--------|----------------------|--------|
|                                                                                                      |   | 2009                 |   |   | 2008 |   |
| 9.9%      fixed interest rate senior secured notes due December 2010 (“Series B”      notes): |   |                 |   |   |   |   |
| Current      portion of debt – due December 31, 2010                                                |   | $                    | 3.2    |   |   | $ | 5.0 |   |
| Long-term      portion of debt                                                                            |   |                 | --     |   |   |   | 3.2 |   |
| $7.5      million subordinated note payable to an affiliate of other      co-venture                      |   |                 |   |   |   |   |   |   |
|          participant      (“LL&E Note”)      |   |                 | 7.5    |   |   |   | 7.5 |   |
| Total      joint venture debt principal obligation                                                        |   | $                    | 10.7   |   |   | $ | 15.7 |   |

Note 12.  Equity and Distributions

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|                                                                                               |   | Limited |       |   |     |   |       | Total       |   |
|----------------------------------------------------------------------------------------------------|--------|---------|------------|--------|----------|--------|------------|-------------|--------|
|                                                                                               |   | Partner |       |   | Treasury |   |       | Outstanding |   |
|                                                                                               |   | Units   |       |   | Units    |   |       | Units       |   |
| Activity      on February 5, 2007:                                                                 |   |    |       |   |     |   |       |        |   |
| Common      units originally issued to EPO in connection with the DEP I drop down      transaction |   |    | 7,301,571  |   |     |   | --         |        |   |   | 7,301,571 |   |
| Common      units issued in connection with our IPO                                                |   |    | 14,950,000 |   |     |   | --         |        |   |   | 14,950,000 |   |
| Redemption      of common units using proceeds from IPO overallotment                              |   |    | (1,950,000 | )      |     |   | --         |        |   |   | (1,950,000 | ) |
| Common      units outstanding, December 31, 2007                                                   |   |    | 20,301,571 |   |     |   | --         |        |   |   | 20,301,571 |   |
| Common      units sold to EPO in connection with the DEP II drop down      transaction             |   |    | 41,529     |   |     |   | --         |        |   |   | 41,529 |   |
| Common      units outstanding, December 31, 2008                                                   |   |    | 20,343,100 |   |     |   | --         |        |   |   | 20,343,100 |   |
| Conversion      of Class B units to common units on February 1, 2009                               |   |    | 37,333,887 |   |     |   | --         |        |   |   | 37,333,887 |   |
| June      2009 underwritten offering                                                               |   |    | 8,000,000  |   |     |   | --         |        |   |   | 8,000,000 |   |
| Acquisition      of common units from EPO in June 2009                                             |   |    | (8,000,000 | )      |     |   | 8,000,000  |        |   |   | -- |   |
| Cancellation      of treasury units in June 2009                                                   |   |    | --         |   |     |   | (8,000,000 | )           |   |   | (8,000,000 | ) |
| Additional      units issued in July 2009 in connection with                                       |   |    |       |   |     |   |       |        |   |   |   |   |
|     June      2009 underwritten offering                                       |   |    | 943,400    |   |     |   | --         |        |   |   | 943,400 |   |
| Acquisition      of common units from EPO in July 2009                                             |   |    | (943,400   | )      |     |   | 943,400    |        |   |   | -- |   |
| Cancellation      of treasury units in July 2009                                                   |   |    | --         |   |     |   | (943,400   | )           |   |   | (943,400 | ) |
| Common      units outstanding, December 31, 2009                                                   |   |    | 57,676,987 |   |     |   | --         |        |   |   | 57,676,987 |   |

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | Cash      Distribution History |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------------------|
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | Per                            |   | Record | Payment |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | Unit                           |   | Date | Date |
| 2008                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                           |   |   |   |
| 1st      Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                           | 0.4100 |   | April      30, 2008 | May      7, 2008 |
| 2nd      Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                           | 0.4200 |   | July      31, 2008 | August      7, 2008 |
| 3rd      Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                           | 0.4200 |   | October      31, 2008 | November      12, 2008 |
|                            4th Quarter (1)                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |                           | 0.4275 |   | January      30, 2009 | February      9, 2009 |
| 2009                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                           |   |   |   |   |
| 1st      Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                           | 0.4300 |   | April      30, 2009 | May      8, 2009 |
| 2nd      Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                           | 0.4350 |   | July      31, 2009 | August      7, 2009 |
| 3rd      Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                           | 0.4400 |   | October      30, 2009 | November      5, 2009 |
| 4th      Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   |                           | 0.4450 |   | January      29, 2010 | February      5, 2010 |
| (1)        We      issued 37.3 million Class B units in connection with the DEP II drop      down. The Class B units received a cash distribution of $0.1115 per      unit for the distribution that Duncan Energy Partners paid with respect to      the fourth quarter of 2008, which represented the regular quarterly      distribution pro-rated for the 24-day period from December 8, 2008, the      closing date of the DEP II drop down transaction, to December 31,      2008. These units automatically converted on a one-for-one basis to      common units on February 1, 2009. |

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Note 13.  Noncontrolling Interest

| §   | EPO      is allocated all operational measurement gains and losses;    and |
|--------------------|----------------------------------------------------------------------------|

| §   | EPO      is allocated 100% of the depreciation expense related to capital projects      that it has fully funded. |
|--------------------|-------------------------------------------------------------------------------------------------------------------|

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|                                                                                                           |   | For      the Year Ended |      |
|----------------------------------------------------------------------------------------------------------------|--------|-------------------------|-----------|
|                                                                                                           |   | December      31,       |      |
|                                                                                                           |   | 2009                    |      |   | 2008 |   |   | 2007 |   |
|                                                                                                           |   |                    |      |   |   |   |   |   |   |
| Total      net income of DEP I Midstream Businesses, prior to special      allocations                         |   | $                       | 68.0      |   |   | $ | 56.4 |   |   | $ | 45.4 |   |
| Multiplied      by Parent 34% interest in net income                                                           |   |                    | x 34 | % |   |   | x 34 | % |   |   | x 34 | % |
| Parent      34% interest in net income, prior to special allocations                                           |   |                    | 23.1      |   |   |   | 19.2 |   |   |   | 15.5 |   |
| Add      (deduct) operational measurement gain (loss) allocated to      Parent                                 |   |                    | (1.7      | ) |   |   | (6.8 | ) |   |   | 4.5 |   |
| Less      depreciation expense related to fully funded projects allocated to      Parent                       |   |                    | (6.1      | ) |   |   | (1.0 | ) |   |   | -- |   |
| Net      income attributable to noncontrolling interest – DEP I Midstream      Businesses – Parent |   | $                       | 15.3      |   |   | $ | 11.4 |   |   | $ | 20.0 |   |

| December      31, 2007 balance                                                                                                                                                          |   | $      | 355.2  |   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------|--------|
|         Net income attributable to noncontrolling interest – DEP I Midstream      Businesses – Parent                                                             |   |   | 11.4   |   |
|         Contributions made by EPO to South Texas NGL and Mont Belvieu      Caverns       in      connection with the following agreements: |   |   |   |   |
|           Caverns      LLC Agreement                                                                                                  |   |   | 88.1   |   |
|                Omnibus Agreement                                                                                                           |   |   | 31.4   |   |
|         Other contributions made by EPO to the DEP I Midstream      Businesses                                                                                                |   |   | 36.5   |   |
|         Cash distributions paid to EPO by the DEP I Midstream      Businesses                                                                                                 |   |   | (44.2  | )      |
| December      31, 2008 balance                                                                                                                                                          |   |   | 478.4  |   |
|         Net income attributable to noncontrolling interest – DEP I Midstream      Businesses – Parent                                                             |   |   | 15.3   |   |
|         Contributions made by EPO to South Texas NGL and Mont Belvieu      Caverns            in connection with the following agreements:      |   |   |   |   |
|                Caverns LLC Agreement                                                                                                       |   |   | 16.6   |   |
|                Omnibus Agreement                                                                                                           |   |   | 1.4    |   |
|         Other contributions made by EPO to the DEP I Midstream      Businesses                                                                                                |   |   | 0.9    |   |
|         Cash distributions paid to EPO by the DEP I Midstream      Businesses                                                                                                 |   |   | (25.3  | )      |
| December      31, 2009 balance                                                                                                                                                          |   | $      | 487.3  |   |

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|                                                                                                    |   | DEP    |   |   | EPO    |   |
|---------------------------------------------------------------------------------------------------------|--------|--------|--------|--------|--------|--------|
| Total      net income of DEP II Midstream Businesses                                                    |   |   |   |   | $      | 0.5    |   |   | $ | 0.5 |   |
| Multiplied      by each owner's Percentage Interest                                                     |   |   |   |   |   | 22.6   | % |   |   | 77.4 | % |
| Base      earnings allocation to each owner                                                             |   |   |   |   |   | 0.1    |   |   |   | 0.4 |   |
| Additional      earnings allocation to Duncan Energy Partners:                                          |   |   |   |   |   |   |   |   |   |   |   |
| Total      distributions paid by the DEP II Midstream  Businesses with      respect to period |   | $      | 5.4    |   |   |   |   |   |   |   |   |   |
| Multiplied      by 22.6% Percentage Interest of Duncan Energy Partners                                  |   |   | 22.6   | %      |   |   |   |   |   |   |   |   |
| Duncan      Energy Partners’ Percentage Interest in the total cash      distributions             |   |   |   |   |   |   |   |   |   |   |   |   |
|    paid      by the DEP II Midstream Businesses with respect to period                   |   |   | 1.2    |   |   |   |   |   |   |   |   |   |
| Less      actual distributions paid to Duncan Energy Partners                                           |   |   |   |   |   |   |   |   |   |   |   |   |
|    with      respect to period based on annualized return for period                     |   |   | 5.6    |   |   |   | 4.4 |   |   |   | (4.4 | ) |
| Net      income attributable to Duncan Energy Partners                                                  |   |   |   |   |   | $      | 4.5 |   |   |   |   |   |
| Net      loss attributable to EPO as noncontrolling interest                                            |   |   |   |   |   |   |   |   |   | $ | (4.0 | ) |

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|                                                                                                    |   | DEP    |   |   | EPO    |   |
|---------------------------------------------------------------------------------------------------------|--------|--------|--------|--------|--------|--------|
| Total      net loss of DEP II Midstream Businesses                                                      |   |   |   |   | $      | (0.5   | ) |   | $ | (0.5 | ) |
| Multiplied      by each owner's Percentage Interest                                                     |   |   |   |   |   | 22.6   | % |   |   | 77.4 | % |
| Base      earnings allocation to each owner                                                             |   |   |   |   |   | (0.1   | ) |   |   | (0.4 | ) |
| Additional      earnings allocation to Duncan Energy Partners:                                          |   |   |   |   |   |   |   |   |   |   |   |
| Total      distributions paid by the DEP II Midstream  Businesses with      respect to period |   | $      | 116.3  |   |   |   |   |   |   |   |   |   |
| Multiplied      by 22.6% Percentage Interest of Duncan Energy Partners                                  |   |   | 22.6   | %      |   |   |   |   |   |   |   |   |
| Duncan      Energy Partners’ Percentage Interest in the total cash      distributions             |   |   |   |   |   |   |   |   |   |   |   |   |
|    paid      by the DEP II Midstream Businesses with respect to period                   |   |   | 26.3   |   |   |   |   |   |   |   |   |   |
| Less      actual distributions paid to Duncan Energy Partners                                           |   |   |   |   |   |   |   |   |   |   |   |   |
|    with      respect to period based on annualized return for period                     |   |   | 86.5   |   |   |   | 60.2 |   |   |   | (60.2 | ) |
| Net      income attributable to Duncan Energy Partners                                                  |   |   |   |   |   | $      | 60.1 |   |   |   |   |   |
| Net      loss attributable to EPO as noncontrolling interest                                            |   |   |   |   |   |   |   |   |   | $ | (60.6 | ) |

| Retention      by Parent of ownership interest in DEP II Midstream Businesses on December      8, 2008                   |   | $      | 2,595.5 |   |
|--------------------------------------------------------------------------------------------------------------------------|--------|--------|---------|--------|
| Net      loss attributable to noncontrolling interest – DEP II Midstream Businesses      –  Parent |   |   | (4.0    | )      |
| Contributions      by EPO in connection with expansion cash calls                                                        |   |   | 21.3    |   |
| Distributions      to noncontrolling interest of  subsidiary operating cash      flows                         |   |   | (0.8    | )      |
| Other      general cash contributions from noncontrolling interest                                                       |   |   | 1.0     |   |
| December      31, 2008 balance                                                                                           |   | $      | 2,613.0 |   |
| Allocated      loss from DEP II Midstream Businesses to EPO as Parent                                                    |   |   | (60.6   | )      |
| Contributions      by EPO in connection with expansion cash calls                                                        |   |   | 344.5   |   |
| Distributions      to noncontrolling interest of  subsidiary operating cash      flows                         |   |   | (31.8   | )      |
| Other      general cash contributions from noncontrolling interest                                                       |   |   | 23.1    |   |
| December      31, 2009 balance                                                                                           |   | $      | 2,888.2 |   |

Note 14.  Business Segments

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|                                                                                                                                                                      |                                                                            |   | For      the Year Ended December 31, |   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------|--------|--------------------------------------|--------|
|                                                                                                                                                                      |                                                                            |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Revenues                                                                                                                                                                  |                                                                            | $      | 979.3                                |   |   | $ | 1,598.1 |   |   | $ | 1,220.3 |   |
| Less:                                                                                                                                                                     | Operating      costs and expenses                                               |   |                                 | (908.3 | ) |   |   | (1,512.8 | ) |   |   | (1,171.0 | ) |
| Add:                                                                                                                                                                      | Equity      in income of Evangeline                                             |   |                                 | 1.1    |   |   |   | 0.9 |   |   |   | 0.2 |   |
|                                                                                                                                                                      | Depreciation,      amortization and accretion in                                |   |                                 |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                      |        operating      costs and expenses (1) |   |                                 | 186.3  |   |   |   | 167.3 |   |   |   | 175.3 |   |
|                                                                                                                                                                      | Impairment      charge included in operating                                    |   |                                 |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                      |        costs      and expenses               |   |                                 | 4.2    |   |   |   | -- |   |   |   | -- |   |
|                                                                                                                                                                      | Gain      on asset sales and related transactions                               |   |                                 |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                                                                      |        in      operating costs and expenses  |   |                                 | (0.5   | ) |   |   | (0.5 | ) |   |   | (0.1 | ) |
| Total      segment gross operating margin                                                                                                                                 |                                                                            | $      | 262.1                                |   |   | $ | 253.0 |   |   | $ | 224.7 |   |
|                                                                                                                                                                      |                                                                            |   |                                 |   |   |   |   |   |   |   |   |   |   |
| (1)        Amount      is a component of “Depreciation, amortization and accretion” as presented      on the Statements of Consolidated Cash Flows. |                                                                            |

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|                                                                                                                                                          |   | For      the Year Ended December 31, |   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------------------------|--------|
|                                                                                                                                                          |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Total      segment gross operating margin                                                                                                                     |   | $                                    | 262.1  |   |   | $ | 253.0 |   |   | $ | 224.7 |   |
| Adjustments      to reconcile total segment gross operating margin                                                                                            |   |                                 |   |   |   |   |   |   |   |   |   |   |
| to      operating income:                                                                                                                                     |   |                                 |   |   |   |   |   |   |   |   |   |   |
|    Depreciation,      amortization and accretion in                                                                                            |   |                                 |   |   |   |   |   |   |   |   |   |   |
|           operating      costs and expenses (1)                                                             |   |                                 | (186.3 | ) |   |   | (167.3 | ) |   |   | (175.3 | ) |
|    Impairment      charge included in operating                                                                                                |   |                                 |   |   |   |   |   |   |   |   |   |   |
|        costs      and expenses                                                                                             |   |                                 | (4.2   | ) |   |   | -- |   |   |   | -- |   |
|    Gain      on asset sales and related transactions in                                                                                        |   |                                 |   |   |   |   |   |   |   |   |   |   |
|           operating      costs and expenses                                                                 |   |                                 | 0.5    |   |   |   | 0.5 |   |   |   | 0.1 |   |
|    General      and administrative costs                                                                                                       |   |                                 | (11.2  | ) |   |   | (18.3 | ) |   |   | (13.1 | ) |
| GAAP      operating income                                                                                                                                    |   |                                 | 60.9   |   |   |   | 67.9 |   |   |   | 36.4 |   |
|    Other      expense, net                                                                                                                     |   |                                 | (13.8  | ) |   |   | (11.5 | ) |   |   | (8.6 | ) |
|    Provision      for income taxes                                                                                                             |   |                                 | (1.3   | ) |   |   | (1.1 | ) |   |   | (4.2 | ) |
| GAAP      net income                                                                                                                                          |   | $                                    | 45.8   |   |   | $ | 55.3 |   |   | $ | 23.6 |   |
|                                                                                                                                                          |   |                                 |   |   |   |   |   |   |   |   |   |   |
| (1) Amount      is a component of “Depreciation, amortization and accretion” as presented      on the Statements of Consolidated Cash Flows. |   |

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Table of Contents

|                                        |   | Natural      Gas    |    |   | NGL                 |   |   |          |   |   | Adjustments  |   |   |         |   |
|---------------------------------------------|--------|---------------------|---------|--------|---------------------|--------|--------|---------------|--------|--------|--------------|--------|--------|--------------|--------|
|                                        |   | Pipelines           |    |   | Pipelines           |   |   | Petrochemical |   |   | and          |   |   | Consolidated |   |
|                                        |   | &      Services |    |   | &      Services |   |   | Services      |   |   | Eliminations |   |   | Totals       |   |
| Revenues      from third parties:           |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |
| Year      ended December 31, 2009           |   | $                   | 390.2   |   |                | $      | 88.2   |          |   | $      | 13.6         |   |   | $            | --     |   |   | $ | 492.0 |   |
| Year      ended December 31, 2008           |   |                | 773.1   |   |                |   | 69.1   |          |   |   | 14.2         |   |   |         | --     |   |   |   | 856.4 |   |
| Year      ended December 31, 2007           |   |                | 685.2   |   |                |   | 59.7   |          |   |   | 14.4         |   |   |         | --     |   |   |   | 759.3 |   |
|                                        |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Revenues      from related parties:         |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Year      ended December 31, 2009           |   |                | 348.5   |   |                |   | 138.8  |          |   |   | --           |   |   |         | --     |   |   |   | 487.3 |   |
| Year      ended December 31, 2008           |   |                | 582.2   |   |                |   | 159.5  |          |   |   | --           |   |   |         | --     |   |   |   | 741.7 |   |
| Year      ended December 31, 2007           |   |                | 323.2   |   |                |   | 134.8  |          |   |   | 3.0          |   |   |         | --     |   |   |   | 461.0 |   |
|                                        |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Total      revenues:                        |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Year      ended December 31, 2009           |   |                | 738.7   |   |                |   | 227.0  |          |   |   | 13.6         |   |   |         | --     |   |   |   | 979.3 |   |
| Year      ended December 31, 2008           |   |                | 1,355.3 |   |                |   | 228.6  |          |   |   | 14.2         |   |   |         | --     |   |   |   | 1,598.1 |   |
| Year      ended December 31, 2007           |   |                | 1,008.4 |   |                |   | 194.5  |          |   |   | 17.4         |   |   |         | --     |   |   |   | 1,220.3 |   |
|                                        |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Equity      in income of Evangeline:        |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Year      ended December 31, 2009           |   |                | 1.1     |   |                |   | --     |          |   |   | --           |   |   |         | --     |   |   |   | 1.1 |   |
| Year      ended December 31, 2008           |   |                | 0.9     |   |                |   | --     |          |   |   | --           |   |   |         | --     |   |   |   | 0.9 |   |
| Year      ended December 31, 2007           |   |                | 0.2     |   |                |   | --     |          |   |   | --           |   |   |         | --     |   |   |   | 0.2 |   |
|                                        |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Gross      operating margin by individual   |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| business      segment and in total:         |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Year      ended December 31, 2009           |   |                | 148.2   |   |                |   | 103.4  |          |   |   | 10.5         |   |   |         | --     |   |   |   | 262.1 |   |
| Year      ended December 31, 2008           |   |                | 159.0   |   |                |   | 82.9   |          |   |   | 11.1         |   |   |         | --     |   |   |   | 253.0 |   |
| Year      ended December 31, 2007           |   |                | 122.5   |   |                |   | 87.9   |          |   |   | 14.3         |   |   |         | --     |   |   |   | 224.7 |   |
|                                        |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Segment      assets:                        |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| At      December 31, 2009                   |   |                | 3,340.8 |   |                |   | 946.1  |          |   |   | 83.3         |   |   |         | 233.7  |   |   |   | 4,603.9 |   |
| At      December 31, 2008                   |   |                | 2,909.8 |   |                |   | 936.5  |          |   |   | 86.6         |   |   |         | 459.0  |   |   |   | 4,391.9 |   |
| At      December 31, 2007                   |   |                | 2,716.6 |   |                |   | 731.5  |          |   |   | 89.6         |   |   |         | 257.3  |   |   |   | 3,795.0 |   |
|                                        |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Property,      plant and equipment:         |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| At      December 31, 2009                   |   |                | 3,318.8 |   |                |   | 913.8  |          |   |   | 83.3         |   |   |         | 233.7  |   |   |   | 4,549.6 |   |
| At      December 31, 2008                   |   |                | 2,887.5 |   |                |   | 897.1  |          |   |   | 86.6         |   |   |         | 459.0  |   |   |   | 4,330.2 |   |
| At      December 31, 2007                   |   |                | 2,693.8 |   |                |   | 697.3  |          |   |   | 89.6         |   |   |         | 257.3  |   |   |   | 3,738.0 |   |
|                                        |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Investment in Evangeline:      (see Note 9) |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| At      December 31, 2009                   |   |                | 5.6     |   |                |   | --     |          |   |   | --           |   |   |         | --     |   |   |   | 5.6 |   |
| At      December 31, 2008                   |   |                | 4.5     |   |                |   | --     |          |   |   | --           |   |   |         | --     |   |   |   | 4.5 |   |
| At      December 31, 2007                   |   |                | 3.5     |   |                |   | --     |          |   |   | --           |   |   |         | --     |   |   |   | 3.5 |   |
|                                        |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Intangible      assets:                     |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| At      December 31, 2009                   |   |                | 12.0    |   |                |   | 31.8   |          |   |   | --           |   |   |         | --     |   |   |   | 43.8 |   |
| At      December 31, 2008                   |   |                | 13.4    |   |                |   | 38.9   |          |   |   | --           |   |   |         | --     |   |   |   | 52.3 |   |
| At      December 31, 2007                   |   |                | 14.9    |   |                |   | 33.7   |          |   |   | --           |   |   |         | --     |   |   |   | 48.6 |   |
|                                        |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| Goodwill:                                   |   |                |    |   |                |   |   |          |   |   |         |   |   |         |   |   |   |   |   |   |
| At      December 31, 2009                   |   |                | 4.4     |   |                |   | 0.5    |          |   |   | --           |   |   |         | --     |   |   |   | 4.9 |   |
| At      December 31, 2008                   |   |                | 4.4     |   |                |   | 0.5    |          |   |   | --           |   |   |         | --     |   |   |   | 4.9 |   |
| At      December 31, 2007                   |   |                | 4.4     |   |                |   | 0.5    |          |   |   | --           |   |   |         | --     |   |   |   | 4.9 |   |

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|                                          |   | For      the Year Ended December 31, |   |
|-----------------------------------------------|--------|--------------------------------------|--------|
|                                          |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Natural      Gas Pipelines & Services:    |   |                                 |   |   |   |   |   |   |   |
| Sales      of natural gas                     |   | $                                    | 460.2  |   |   | $ | 1,100.2 |   |   | $ | 794.1 |   |
| Natural      gas transportation services      |   |                                 | 263.2  |   |   |   | 246.7 |   |   |   | 212.8 |   |
| Natural      gas storage services             |   |                                 | 15.3   |   |   |   | 8.4 |   |   |   | 1.5 |   |
| Total                                         |   | $                                    | 738.7  |   |   | $ | 1,355.3 |   |   | $ | 1,008.4 |   |
| NGL      Pipelines & Services:            |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Sales      of NGLs                            |   | $                                    | 35.0   |   |   | $ | 47.9 |   |   | $ | 40.3 |   |
| Sales      of other products                  |   |                                 | 11.3   |   |   |   | 15.0 |   |   |   | 10.8 |   |
| NGL      and petrochemical storage services   |   |                                 | 104.9  |   |   |   | 87.4 |   |   |   | 68.9 |   |
| NGL      fractionation services               |   |                                 | 29.5   |   |   |   | 32.4 |   |   |   | 30.3 |   |
| NGL      transportation services              |   |                                 | 43.8   |   |   |   | 43.6 |   |   |   | 42.5 |   |
| Other      services                           |   |                                 | 2.5    |   |   |   | 2.3 |   |   |   | 1.7 |   |
| Total                                         |   | $                                    | 227.0  |   |   | $ | 228.6 |   |   | $ | 194.5 |   |
| Petrochemical      Services:                  |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Propylene      transportation services        |   | $                                    | 13.6   |   |   | $ | 14.2 |   |   | $ | 17.4 |   |
| Total      consolidated revenues              |   | $                                    | 979.3  |   |   | $ | 1,598.1 |   |   | $ | 1,220.3 |   |
|                                          |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Consolidated      cost and expenses           |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Operating      costs and expenses:            |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Cost      of natural gas and NGL sales        |   | $                                    | 479.7  |   |   | $ | 1,123.9 |   |   | $ | 815.8 |   |
| Depreciation,      amortization and accretion |   |                                 | 186.3  |   |   |   | 167.4 |   |   |   | 175.3 |   |
| Gain      on asset sales and                  |   |                                 |   |   |   |   |   |   |   |   |   |   |
|    related      transactions   |   |                                 | (0.5   | ) |   |   | (0.5 | ) |   |   | (0.1 | ) |
| Other      operating expenses                 |   |                                 | 242.8  |   |   |   | 222.0 |   |   |   | 180.0 |   |
| General      and administrative costs         |   |                                 | 11.2   |   |   |   | 18.3 |   |   |   | 13.1 |   |
| Total      consolidated costs and expenses    |   | $                                    | 919.5  |   |   | $ | 1,531.1 |   |   | $ | 1,184.1 |   |

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Note 15.  Related Party Transactions

|                                                                      |   | For      the Year Ended December 31, |   |
|---------------------------------------------------------------------------|--------|--------------------------------------|--------|
|                                                                      |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Revenues:                                                                 |   |                                 |   |   |   |   |   |   |   |
| Revenues      from EPO:                                                   |   |                                 |   |   |   |   |   |   |   |
| Sales      of natural gas                                                 |   | $                                    | 141.9  |   |   | $ | 177.3 |   |   | $ | 29.6 |   |
| Natural      gas transportation services                                  |   |                                 | 56.4   |   |   |   | 51.5 |   |   |   | 35.8 |   |
| Natural      gas storage services                                         |   |                                 | 2.6    |   |   |   | 0.9 |   |   |   | -- |   |
| Sales      of NGLs                                                        |   |                                 | 33.7   |   |   |   | 52.9 |   |   |   | 41.2 |   |
| NGL      and petrochemical storage services                               |   |                                 | 36.2   |   |   |   | 35.2 |   |   |   | 28.9 |   |
| NGL      fractionation services                                           |   |                                 | 32.0   |   |   |   | 29.7 |   |   |   | 30.3 |   |
| NGL      transportation services                                          |   |                                 | 28.6   |   |   |   | 30.4 |   |   |   | 27.6 |   |
| Other services                                                       |   |                                 | --     |   |   |   | -- |   |   |   | 3.0 |   |
| Sales      of natural gas – Evangeline                              |   |                                 | 155.5  |   |   |   | 362.9 |   |   |   | 264.2 |   |
| Natural      gas transportation services – Energy Transfer Equity   |   |                                 | 0.1    |   |   |   | 0.9 |   |   |   | 0.4 |   |
| NGL      and petrochemical storage services – Energy TransferEquity |   |                                 | 0.3    |   |   |   | -- |   |   |   | -- |   |
| Total      related party revenues                                         |   | $                                    | 487.3  |   |   | $ | 741.7 |   |   | $ | 461.0 |   |
|                                                                      |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Operating      costs and expenses:                                        |   |                                 |   |   |   |   |   |   |   |   |   |   |
| EPCO      administrative services agreement                               |   | $                                    | 85.8   |   |   | $ | 72.1 |   |   | $ | 63.7 |   |
| Expenses      with EPO:                                                   |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Purchases      of natural gas                                             |   |                                 | 52.1   |   |   |   | 229.9 |   |   |   | 29.1 |   |
| Operational      measurement losses (gains)                               |   |                                 | 1.7    |   |   |   | 6.8 |   |   |   | (4.5 | ) |
| Other      expenses with EPO                                              |   |                                 | 16.4   |   |   |   | 18.4 |   |   |   | 7.4 |   |
| Purchases      of natural gas – Nautilus                            |   |                                 | 1.7    |   |   |   | 10.3 |   |   |   | 3.5 |   |
| Expenses      with Energy Transfer Equity:                                |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Purchases      of natural gas                                             |   |                                 | 5.7    |   |   |   | 7.3 |   |   |   | 5.6 |   |
| Operating      cost reimbursements for shared facilities                  |   |                                 | (3.4   | ) |   |   | (2.8 | ) |   |   | (1.7 | ) |
| Other      expenses with Energy Transfer Equity                           |   |                                 | (0.7   | ) |   |   | 3.1 |   |   |   | 1.1 |   |
| Other      related party expenses, primarily with Evangeline              |   |                                 | --     |   |   |   | -- |   |   |   | 0.1 |   |
| Total      related party operating costs and expenses                     |   | $                                    | 159.3  |   |   | $ | 345.1 |   |   | $ | 104.3 |   |
|                                                                      |   |                                 |   |   |   |   |   |   |   |   |   |   |
| General      and administrative costs:                                    |   |                                 |   |   |   |   |   |   |   |   |   |   |
| EPCO      administrative services agreement                               |   | $                                    | 10.9   |   |   | $ | 15.7 |   |   | $ | 11.5 |   |
| Other      related party general and administrative costs                 |   |                                 | --     |   |   |   | (0.8 | ) |   |   | (0.1 | ) |
| Total      related party general and administrative costs                 |   | $                                    | 10.9   |   |   | $ | 14.9 |   |   | $ | 11.4 |   |

|                                                                                                                                                                                                             |   | December      31, |   |   | December      31, |   |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-------------------|--------|--------|-------------------|--------|
|                                                                                                                                                                                                             |   | 2009              |   |   | 2008              |   |
| Accounts      receivable – related parties                                                                                                                                                                 |   |              |   |   |              |   |
| EPO      and affiliates (1)                                                                                                                                                                                      |   | $                 | 54.3   |   |              | $      | 2.3 |   |
| Energy      Transfer Equity and affiliates                                                                                                                                                                       |   |              | 0.2    |   |              |   | 0.9 |   |
| Other                                                                                                                                                                                                            |   |              | --     |   |              |   | 0.1 |   |
| Total                                                                                                                                                                                                            |   | $                 | 54.5   |   |              | $      | 3.3 |   |
|                                                                                                                                                                                                             |   |              |   |   |              |   |   |   |
| Accounts      payable – related parties                                                                                                                                                                    |   |              |   |   |              |   |   |   |
| EPO      and affiliates                                                                                                                                                                                          |   | $                 | 5.5    |   |              | $      | 46.1 |   |
| EPCO      and affiliates                                                                                                                                                                                         |   |              | 8.1    |   |              |   | 2.4 |   |
| Total                                                                                                                                                                                                            |   | $                 | 13.6   |   |              | $      | 48.5 |   |
|                                                                                                                                                                                                             |   |              |   |   |              |   |   |   |
| (1) EPO      borrowed $45.6 million under a Master Intercompany Loan      Agreement. See “Significant Relationships and Agreements with EPO”      under this Note 15 for more information. |   |

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| §   | indemnification      for certain environmental liabilities, tax liabilities and right-of-way      defects with respect to the DEP I and DEP II Midstream Businesses EPO      contributed to us in connection with the respective drop down      transactions; |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | funding      by EPO of 100% of post-February 5, 2007 capital expenditures incurred by      South Texas NGL and Mont Belvieu Caverns with respect to certain expansion      projects under construction at the time of our  IPO; |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | funding      by EPO of 100% of post-December 8, 2008 capital expenditures to complete      the Sherman Extension natural gaspipeline; |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------|

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| §   | a      right of first refusal to EPO in our current and future subsidiaries and a      right of first refusal on the material assets of such subsidiaries, other      than sales of inventory and other assets in the ordinary course of      business; and |
|--------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | a      preemptive right with respect to equity securities issued by certain of      our subsidiaries, other than as consideration in an acquisition or in      connection with a loan or debtfinancing. |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | the      acquisition by us from EPO of a 66% general partner interest in Enterprise      GC, a 51% general |
|--------------------|------------------------------------------------------------------------------------------------------------|

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|    | partner      interest in Enterprise Intrastate and a 51% member interest in Enterprise      Texas; |
|--------------|----------------------------------------------------------------------------------------------------|

| §   | the      payment of distributions in accordance with an overall “waterfall”      approach that stipulates that to the extent that the DEP II Midstream      Businesses collectively generate cash sufficient to pay distributions to      their partners or members, such cash will be distributed first to us and      then to EPO in amounts sufficient to generate an aggregate annualized      fixed return on their respective investments of      11.85%.  Distributions in excess of these amounts will be      distributed 98.0% to EPO and 2.0% to us.  The initial annual      fixed return amount of 11.85% will be increased by 2.0% each calendar year      beginning January 1, 2010.  For example, the fixed return in      2010, assuming no other adjustments, would be 102% of 11.85%, or      12.087%; |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | the      funding of operating cash flow deficits in accordance with each owner’s      respective partner or memberinterest; |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------|

| §   | the      election by either owner to fund cash calls associated with expansion      capital projects.  Since December 8, 2008, we have elected to      not participate in such cash calls and, as a result, EPO has funded 100%      of the expansion project costs of the DEP II Midstream      Businesses.  If we later elect to participate in any expansion      projects, then we will be required to make a capital contribution for our      share of the project costs. |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | EPCO      will provide selling, general and administrative services, and management      and operating services, as may be necessary to manage and operate our      businesses, properties and assets (all in accordance with prudent industry      practices).  EPCO will employ or otherwise retain the services      of such personnel as may be necessary to provide such      services. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | We      are required to reimburse EPCO for its services in an amount equal to the      sum of all costs and expenses incurred by EPCO which are directly or      indirectly related to our business oractivities |
|--------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|    | (including      expenses reasonably allocated to us by EPCO).  In addition, we      have agreed to pay all sales, use, excise, value added or similar taxes,      if any, that may be applicable from time to time in respect of the      services provided to us by EPCO. |
|--------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| §   | EPCO      will allow us to participate as named insureds in its overall insurance      program, with the associated premiums and other costs being allocated to      us. |
|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|                                     |   | For      Year Ended December 31, |   |
|------------------------------------------|--------|----------------------------------|--------|
|                                     |   | 2009                             |   |   | 2008 |   |   | 2007 |   |
| Operating      costs and expenses        |   | $                                | 85.8   |   |   | $ | 72.1 |   |   | $ | 63.7 |   |
| General      and administrative expenses |   |                             | 10.9   |   |   |   | 15.7 |   |   |   | 11.5 |   |
| Total      costs and expenses            |   | $                                | 96.7   |   |   | $ | 87.8 |   |   | $ | 75.2 |   |

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Note 16.  Earnings Per Unit

|                                                                                                                         |   | For      the Year Ended December 31, |   |
|------------------------------------------------------------------------------------------------------------------------------|--------|--------------------------------------|--------|
|                                                                                                                         |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Net      income attributable to Duncan Energy Partners L.P.                                                                  |   | $                                    | 91.1   |   |   | $ | 47.9 |   |   | $ | 3.6 |   |
| Subtract:      Income allocated to former owners of DEP I Midstream      Businesses                                          |   |                                 | --     |   |   |   | -- |   |   |   | (5.0 | ) |
| Add      (subtract): Loss (income) allocated to former owners of    the      DEP II Midstream Businesses |   |                                 | --     |   |   |   | (19.6 | ) |   |   | 20.6 |   |
| Net      income allocated to Duncan Energy Partners                                                                          |   |                                 | 91.1   |   |   |   | 28.3 |   |   |   | 19.2 |   |
| Multiplied      by DEP GP ownership interest (weighted-average for period)                                                   |   |                                 | 0.7    | % |   |   | 1.7 | % |   |   | 2.0 | % |
| Net      income allocation to DEP GP                                                                                         |   | $                                    | 0.6    |   |   | $ | 0.5 |   |   | $ | 0.4 |   |

|                                                                         |   | For      the Year Ended December 31, |   |
|------------------------------------------------------------------------------|--------|--------------------------------------|--------|
|                                                                         |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Net      income allocation to Duncan Energy Partners                         |   | $                                    | 91.1   |   |   | $ | 28.3 |   |   | $ | 19.2 |   |
| Less:  Income      allocation to DEP GP                            |   |                                 | 0.6    |   |   |   | 0.5 |   |   |   | 0.4 |   |
| Net      income allocation to limited partners                               |   | $                                    | 90.5   |   |   | $ | 27.8 |   |   | $ | 18.8 |   |
|                                                                         |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Basic      and diluted earnings per unit:                                    |   |                                 |   |   |   |   |   |   |   |   |   |   |
|    Numerator      (net income allocation to limited partners) |   | $                                    | 90.5   |   |   | $ | 27.8 |   |   |   | 18.8 |   |
|    Denominator      (weighted-average units outstanding):     |   |                                 |   |   |   |   |   |   |   |   |   |   |
|       Common      units                        |   |                                 | 54.5   |   |   |   | 20.3 |   |   |   | 20.3 |   |
|       Class      B units                       |   |                                 | 3.2    |   |   |   | 2.5 |   |   |   | -- |   |
|       Total      units                         |   |                                 | 57.7   |   |   |   | 22.8 |   |   |   | 20.3 |   |
|                                                                         |   |                                 |   |   |   |   |   |   |   |   |   |   |
|    Earnings      per unit                                     |   | $                                    | 1.57   |   |   | $ | 1.22 |   |   | $ | 0.93 |   |

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Note 17.  Commitments and Contingencies

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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   | Payment      or Settlement due by Period |   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|------------------------------------------|--------|
| Contractual      Obligations (1)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   | Total                                    |   |   | 2010 |   |   | 2011 |   |   | 2012 |   |   | 2013 |   |   | 2014 |   |   | Thereafter |   |
| Scheduled      maturities of long term debt (2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   | $                                        | 457.3  |   |   | $ | -- |   |   | $ | 457.3 |   |   | $ | -- |   |   | $ | -- |   |   | $ | -- |   |   | $ | -- |   |
| Estimated      cash interest payments (3)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | $                                        | 14.8   |   |   | $ | 11.1 |   |   | $ | 3.7 |   |   | $ | -- |   |   | $ | -- |   |   | $ | -- |   |   | $ | -- |   |
| Operating      lease obligations                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   | $                                        | 115.6  |   |   | $ | 9.0 |   |   | $ | 8.9 |   |   | $ | 8.7 |   |   | $ | 7.4 |   |   | $ | 6.6 |   |   | $ | 75.0 |   |
| Purchase      obligations:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   |                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Product      purchase commitments:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Estimated      payment obligations:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Natural      gas                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   | $                                        | 511.7  |   |   | $ | 257.3 |   |   | $ | 127.0 |   |   | $ | 127.4 |   |   | $ | -- |   |   | $ | -- |   |   | $ | -- |   |
| Other                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   | $                                        | 0.1    |   |   | $ | *  |   |   | $ | *  |   |   | $ | *  |   |   | $ | -- |   |   | $ | -- |   |   | $ | -- |   |
| Underlying      major volume commitments:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   |                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Natural      gas (in BBtus)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |                                     | 77,207 |   |   |   | 40,657 |   |   |   | 18,250 |   |   |   | 18,300 |   |   |   | -- |   |   |   | -- |   |   |   | -- |   |
| Capital      expenditure commitments (4)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   | $                                        | 175.3  |   |   | $ | 175.3 |   |   | $ | -- |   |   | $ | -- |   |   | $ | -- |   |   | $ | -- |   |   | $ | -- |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   |                                     |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| *      Indicates amounts are immaterial and less than $0.1    million.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   |
| (1)        The      contractual obligations presented in this table reflect 100% of our      subsidiaries obligations even though we own less than a 100% equity      interest in our operating subsidiaries.(2)        See      Note 11 for additional information regarding our credit      facilities.(3)        Our      estimated cash payments for interest are based on the principle amount of      consolidated debt obligations outstanding at December 31, 2009. With      respect to variable-rate debt, we applied the weighted-average interest      rates paid during 2009. See Note 11 for information regarding      variable interest rates charged in 2009 under our credit      agreements. In addition, our estimate of cash payments for interest      gives effect to interest rate swap agreements in place at December 31,      2009. See Note 6 for information regarding our derivative      instruments.(4)        Capital      expenditure commitments are reflected on a 100% basis before contributions      from noncontrolling interest in connection with the Omnibus Agreement and      Caverns LLC Agreement (see Note 15). |   |

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Note 18.  Significant Risks andUncertainties

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Note 19.  Supplemental Cash FlowInformation

|                                                                         |   | For      the Year Ended December 31, |   |
|------------------------------------------------------------------------------|--------|--------------------------------------|--------|
|                                                                         |   | 2009                                 |   |   | 2008 |   |   | 2007 |   |
| Decrease      (increase) in:                                                 |   |                                 |   |   |   |   |   |   |   |
| Accounts      receivable - trade                                             |   | $                                    | 39.6   |   |   | $ | 5.0 |   |   | $ | 9.7 |   |
| Accounts      receivable - related party                                     |   |                                 | (55.5  | ) |   |   | 1.2 |   |   |   | (4.2 | ) |
| Gas      imbalance receivables                                               |   |                                 | 25.9   |   |   |   | (1.4 | ) |   |   | 28.7 |   |
| Inventories                                                                  |   |                                 | 17.5   |   |   |   | (6.0 | ) |   |   | (6.8 | ) |
| Prepaid      and other current assets                                        |   |                                 | (5.3   | ) |   |   | 1.6 |   |   |   | (1.5 | ) |
| Increase      (decrease) in:                                                 |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Accounts      payable - trade                                                |   |                                 | (1.7   | ) |   |   | (5.9 | ) |   |   | 15.8 |   |
| Accounts      payable - related party                                        |   |                                 | (39.9  | ) |   |   | 13.5 |   |   |   | 31.0 |   |
| Accrued      costs and expenses                                              |   |                                 | (42.7  | ) |   |   | (10.1 | ) |   |   | (47.7 | ) |
| Accrued      property taxes                                                  |   |                                 | 0.8    |   |   |   | 1.6 |   |   |   | 1.7 |   |
| Accrued      taxes - other                                                   |   |                                 | 0.1    |   |   |   | 4.8 |   |   |   | 2.7 |   |
| Other      current liabilities                                               |   |                                 | (19.1  | ) |   |   | 6.5 |   |   |   | (16.0 | ) |
| Other      long-term liabilities                                             |   |                                 | (0.2   | ) |   |   | (12.6 | ) |   |   | 0.8 |   |
| Net      effect of changes in operating accounts                             |   | $                                    | (80.5  | ) |   | $ | (1.8 | ) |   | $ | 14.2 |   |
|                                                                         |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Cash      payments for interest, net of $0.3, $0.3 and                       |   |                                 |   |   |   |   |   |   |   |   |   |   |
|    $2.6      capitalized in 2009, 2008 and 2007, respectively |   | $                                    | 13.8   |   |   | $ | 11.5 |   |   | $ | 11.5 |   |
|                                                                         |   |                                 |   |   |   |   |   |   |   |   |   |   |
| Cash      payments for income taxes                                          |   | $                                    | 1.0    |   |   | $ | 0.2 |   |   | $ | -- |   |

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|                                                   |   | For      the Year Ended December      31, |   |
|--------------------------------------------------------|--------|-------------------------------------------|--------|
|                                                   |   | 2009                                      |   |   | 2008 |   |   | 2007 |   |
| Depreciation,      amortization and accretion expense: |   |                                      |   |   |   |   |   |   |   |
| DEP      I Midstream Businesses                        |   | $                                         | 38.7   |   |   | $ | 34.3 |   |   | $ | 28.9 |   |
| DEP      II Midstream Businesses                       |   |                                      | 147.4  |   |   |   | 133.1 |   |   |   | 146.6 |   |
| Duncan      Energy Partners L.P. standalone            |   |                                      | 2.2    |   |   |   | 0.4 |   |   |   | 0.1 |   |
| Total                                                  |   | $                                         | 188.3  |   |   | $ | 167.8 |   |   | $ | 175.6 |   |

Note 20.  Quarterly Financial Information(Unaudited)

|                                                                                        |   | First   |   |   | Second  |   |   | Third   |   |   | Fourth  |   |
|---------------------------------------------------------------------------------------------|--------|---------|--------|--------|---------|--------|--------|---------|--------|--------|---------|--------|
|                                                                                        |   | Quarter |   |   | Quarter |   |   | Quarter |   |   | Quarter |   |
| For      the Year Ended December 31, 2009:                                                  |   |    |   |   |    |   |   |    |   |   |    |   |
| Revenues                                                                                    |   | $       | 256.8  |   |    | $      | 226.7  |    |   | $      | 244.6   |   |   | $ | 251.2 |   |
| Operating      income                                                                       |   |    | 14.8   |   |    |   | 8.7    |    |   |   | 21.1    |   |   |   | 16.3 |   |
| Net      loss attributable to noncontrolling interest                                       |   |    | 8.9    |   |    |   | 18.7   |    |   |   | 7.0     |   |   |   | 10.7 |   |
| Net      income attributable to Duncan Energy Partners L.P.                                 |   |    | 19.9   |   |    |   | 23.2   |    |   |   | 24.8    |   |   |   | 23.2 |   |
|                                                                                        |   |    |   |   |    |   |   |    |   |   |    |   |   |   |   |   |
| Allocation      of net income attributable to Duncan Energy Partners L.P.:                  |   |    |   |   |    |   |   |    |   |   |    |   |   |   |   |   |
|              Duncan Energy Partners L.P.                 |   |    |   |   |    |   |   |    |   |   |    |   |   |   |   |   |
|             Limited partners                                  |   |    | 19.8   |   |    |   | 23.0   |    |   |   | 24.6    |   |   |   | 23.1 |   |
|             General partner                                   |   |    | 0.1    |   |    |   | 0.2    |    |   |   | 0.2     |   |   |   | 0.1 |   |
|                                                                                        |   |    |   |   |    |   |   |    |   |   |    |   |   |   |   |   |
| Earnings      per unit (basic and diluted)                                                  |   |    | 0.34   |   |    |   | 0.40   |    |   |   | 0.43    |   |   |   | 0.40 |   |
|                                                                                        |   |    |   |   |    |   |   |    |   |   |    |   |   |   |   |   |
| For      the Year Ended December 31, 2008:                                                  |   |    |   |   |    |   |   |    |   |   |    |   |   |   |   |   |
| Revenues                                                                                    |   |    | 363.6  |   |    |   | 478.8  |    |   |   | 432.2   |   |   |   | 323.5 |   |
| Operating      income                                                                       |   |    | 21.1   |   |    |   | 15.8   |    |   |   | 18.7    |   |   |   | 12.3 |   |
| Net      loss (income) attributable to noncontrolling interest                              |   |    | (5.6   | )      |    |   | 0.6    |    |   |   | (4.4    | )      |   |   | 2.0 |   |
| Net      income attributable to Duncan Energy Partners L.P.                                 |   |    | 13.3   |   |    |   | 13.3   |    |   |   | 10.6    |   |   |   | 10.7 |   |
|                                                                                        |   |    |   |   |    |   |   |    |   |   |    |   |   |   |   |   |
| Allocation      of net income attributable to Duncan Energy Partners L.P.:                  |   |    |   |   |    |   |   |    |   |   |    |   |   |   |   |   |
|              Duncan Energy Partners L.P.                 |   |    |   |   |    |   |   |    |   |   |    |   |   |   |   |   |
|             Limited partners                                  |   |    | 5.9    |   |    |   | 6.5    |    |   |   | 3.7     |   |   |   | 11.7 |   |
|             General partner                                   |   |    | 0.1    |   |    |   | 0.1    |    |   |   | 0.1     |   |   |   | 0.2 |   |
|              Former owner of DEP II Midstream Businesses |   |    | 7.3    |   |    |   | 6.7    |    |   |   | 6.8     |   |   |   | (1.2 | ) |
|                                                                                        |   |    |   |   |    |   |   |    |   |   |    |   |   |   |   |   |
| Earnings      per unit (basic and diluted)                                                  |   |    | 0.29   |   |    |   | 0.32   |    |   |   | 0.18    |   |   |   | 0.39 |   |

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