| 1)     | TERM*                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |   |
|   | Effective      Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | Originally      May 1, 2002, as amended and restated effective April 1,      2008  |
|   | Primary      Term End Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | April      30, 2013 |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |   |
|   | *     Pursuant      to Section 2.7, Rate Schedule FSS, MRT and Customer have agreed to an      Effective Date and a Primary Term End Date other than the            beginning of the injection season and the end of      the withdrawal season, respectively.                                                                                                                                                                                                                                                                                                                                                                   |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |   |
|   | Evergreen?                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | Yes  [      X      ]          No  [    ] |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|   | After      Primary Term End Date, this Agreement shall continue to be in effect      unless and until terminated by either MRT or Customer by written notice or      electronically via the Internet as permitted or requested by MRT, to the      other delivered at least one (1) year prior to the date of intended      termination.                                                                                                                                                                                                                                                                                                                                                |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |   |
| 2)     | QUANTITIES                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |   |
|   | Maximum      Stored Quantity      (MSQ):                                                      23,550,243      Dth                                                                                                                                                                                                                                                                                         |
|   | (Based      on a heat content of 1,020 Btu per Cubic Foot)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |   |
|   | Maximum      Daily Withdrawal Quantity      (MDWQ):                                        410,231      Dth                                                                                                                                                                                                                                                                                                                                                                     |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |   |
| 3)     | RATE                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |
|   | Service      hereunder shall be provided pursuant to Rate Schedule      FSS.  Customer shall pay, or cause to be paid, to MRT each month      for all services provided hereunder the maximum applicable rate and any      other charges specified in MRT's FERC Gas Tariff, Third Revised Volume No.      1, as on file and in effect from time to time, for services rendered      hereunder, unless otherwise agreed (either in writing or electronically      via the Internet as required by MRT) by MRT and Customer in an Exhibit A,      or other format provided for in the Tariff, in effect during the term of      this Agreement or in a capacity release award. |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |   |
| 5)     | ADDRESSES                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |
|   | For Notices to      Customer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | For Bills to      Customer: |
|   | Laclede      Gas Company                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | Laclede      Gas Company |
|   | Attn:  Steven      F. Mathews                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | Attn:      Gas Accounting |
|   | 720      Olive Street                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | 720      Olive Street, 13th  Floor |
|   | St.      Louis, MO 63101                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | St.      Louis, MO 63101 |
|   | Telephone:  (314)      516-8585                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | Telephone:  (314)      516-8595 |
|   | Facsimile:    (314)      421-1979                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Facsimile:    (314)      241-2278 |
|   | E-Mail:  smathews@lacledegas.com                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |   |
|   | For Notices to      MRT:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | For Payments to      MRT: |
|   | 1600      S. Brentwood Blvd., Suite 590                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | P.O.      Box 203293 |
|   | St.      Louis, MO 63144                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | Houston,      TX 77216-3293 |
|   | Facsimile:  (314)      991-7600                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |

|   |                                                | For Wire Transfer      Payment to MRT: |
|--------|-----------------------------------------------------|----------------------------------------|
|   | MRT Nominations (other      than electronic):       | Mississippi      River Transmission    |
|   | Client      Services                                | Chase      Bank of Texas               |
|   | Facsimile:  (318)      429-3298           | ABA      No. 113000609                 |
|   |                                                | Account      No.                       |
|   | MRT Pipeline      Operations:                       |                                   |
|   | System      Control Department                      |                                   |
|   | 1600      S. Brentwood Blvd., Suite 590             |                                   |
|   | St.      Louis, MO 63144                            |                                   |
|   | Telephone:      (314) 991-9900                      |                                   |
|   | E-Mail:  mrtconsole@centerpointenergy.com |                                   |

|   | IN      WITNESS WHEREOF, the parties have executed this Agreement as of the last      date shown below. |
|--------|---------------------------------------------------------------------------------------------------------|

| CENTERPOINT      ENERGY - MISSISSIPPI RIVER | LACLEDE      GAS COMPANY                           |
|---------------------------------------------|----------------------------------------------------|
|                                        | TRANSMISSION      CORPORATION                      |   |   |   |   |
|                                        |                                               |   |   |   |   |
|                                        |                                               |   |   |   |   |
| By:                                         | /s/      Robert Trost                              |   | By: | /s/      Kenneth J. Neises |   |
| Name                                        | Robert      Trost                                  |   | Name: | Kenneth      J. Neises |   |
| Title                                       | Division      Vice President – Marketing MRT |   | Title: | Executive      Vice President |   |
|                                        |                                               |   |   |   |   |
| Date:                                       | March      18, 2008                                |   | Date: | March      18, 2008 |   |
|                                        |                                               |   |   |   |   |

| 1)     | Upon      termination hereof for whatever reason, Customer agrees to stop delivering      gas to MRT for storage hereunder.  In addition, upon termination      of this Agreement, Customer agrees that it will thereafter make no further      demand for service hereunder and MRT agrees that it will make no further      demand for the continuation of services or any payment related thereto,      other than payments which are due with respect to any services previously      provided.  Customer agrees to cooperate with and assist MRT in      obtaining whatever regulatory approvals and authorizations, if any, as are      necessary or appropriate in view of such termination and abandonment of      service hereunder.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
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|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| 2)     | Termination      of this Agreement shall not relieve either party of any obligation that      might otherwise exist to correct any volume imbalance hereunder (including      withdrawal of stored quantities) nor relieve Customer of its obligation to      pay any monies due hereunder to MRT.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| 3)     | In      accordance with the terms and conditions of Section 17 of the General      Terms and Conditions of MRT's FERC Gas Tariff, Third Revised Volume No. 1      (General Terms and Conditions), if Customer fails to pay within thirty      (30) days after payment is due all of the amount of any bill for service      rendered by MRT hereunder, MRT, upon ten (10) days' written notice to      Customer, may suspend further injections and/or withdrawals of gas until      such past due amount is paid, or satisfactory credit arrangements have      been made in accordance with Section 5 of the General Terms and      Conditions.  If Customer fails to pay or make satisfactory      credit arrangements within such ten (10) day notice period, MRT, in      addition to any other remedy it may have hereunder, may, upon thirty (30)      days' written notice to Customer, terminate this Agreement and cease      further injections and/or withdrawals of gas on behalf of      Customer.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| 4)     | Service      hereunder shall be provided pursuant to Rate Schedule FSS of MRT's FERC      Gas Tariff, Third Revised Volume No. 1.  Customer will provide      Fuel Use and LUFG.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| 5)     | This      Agreement shall be subject to the provisions of the applicable rate      schedule as well as the General Terms and Conditions set forth in MRT's      Tariff, as on file and in effect from time to time, and such provisions      are incorporated herein by this reference.  Any curtailment of      storage service hereunder shall be in accordance with the priorities set      out in MRT's General Terms and Conditions.  To the extent not      inconsistent with effective law, MRT shall have the right to determine the      priority and/or scheduling of the storage service under this Agreement and      to revise the priority and/or scheduling of this storage service from time      to time.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| 6)     | MRT      shall have the right at any time and from time to time to file and place      into effect unilateral changes or modifications in the rates and charges,      and other terms and conditions of service hereunder, as set forth in the      applicable rate schedule and in the General Terms and Conditions, in      accordance with the Natural Gas Act or other applicable    law.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| 7)     | In      the event that MRT places on file with the Commission another rate      schedule which may be applicable to service rendered hereunder, then MRT,      at its option, may, from and after the effective date of such rate      schedule, utilize such rate schedule in the performance of this      Agreement.  Such rate schedule or superseding rate schedule(s)      and any revisions thereof which shall be filed and become effective shall      apply to and be a part of this Agreement.  MRT shall have the      right to propose, file and make effective with the Commission, or other      body having jurisdiction, changes and revisions of any effective rate      schedule(s) and/or General Terms and Conditions, or to propose, file, and      make effective superseding rate schedules and/or General Terms and      Conditions, for the purpose of changing the rates, charges, and other      provisions thereof effective as to Customer.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| 8)     | Except      as provided in this paragraph, this Agreement shall not be assigned by      Customer in whole or in part without MRT’s prior written or electronic      consent, which consent shall not be unreasonably      withheld.  Customers under Rate Schedule FSS may release their      capacity consistent with the terms and conditions of the applicable rate      schedule and the General Terms and Conditions of MRT’s      Tariff.  Additionally, Customer may request that MRT consent to      Customer’s assignment of this Agreement, in whole, to an entity affiliated      with Customer.  For firm contracts, MRT will only consent to      assignment of the contract to a Customer’s affiliate, subject to the      assignee’s satisfaction of the criteria in Section 5.4(k), GT&C, in      the situation in which, after Customer obtains the contract, a corporate      reorganization results in a transfer to an affiliate of the function for      which the capacity was obtained.  Any entity that succeeds by      purchase, merger, consolidation or otherwise to the properties of      Customer, substantially as an entirety, shall be entitled to the rights      and shall be subject to the obligations of its predecessors in title under      this Agreement.  Subject to the above, the respective rights and      obligations of the parties under this Agreement shall extend to and be      binding upon their heirs, successors, assigns and legal      representatives.  In addition to all      other  rights  and  remedies, MRT may      terminate the Agreement immediately if it is assigned by Customer without      MRT’s consent, whether |

|   | the      assignment or contract be voluntary or by operation of law or      otherwise.  Subject to the above, the respective rights and      obligations of the parties under the Agreement shall extend to and be      binding upon their heirs, successors, assigns and legal      representatives.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| 9)     | Any      notice, statement, or bill provided for in this Agreement shall be in      writing, or if MRT’s Tariff requires, via electronic means and shall be      considered as duly delivered when hand-delivered, telecopied, or when      received by the other party if mailed by United States mail, postage      prepaid, to the addresses specified herein (unless and until either party      notifies the other, in writing, of a change in its    address).                                                                                                                                                                                                                                                                                                                                                                               |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| 10)    | Each      party shall notify the other in writing of the name, address, telephone      number and telecopy number and e-mail address of the person or persons who      shall have authority to act for such party in connection with this      Agreement, and operating notices shall thereafter be served upon such      person or persons.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| 11)    | This      Agreement constitutes the entire agreement between the parties and no      waiver, representation or agreement, oral or otherwise, shall affect the      subject matter hereof unless and until such waiver, representation or      agreement is reduced to writing (or, if MRT permits or requires, otherwise      memorialized via electronic means) and executed by authorized      representatives of the parties.  No waiver by either Customer or      MRT of any one or more defaults by the other in performance of any of the      provisions of the Agreement shall operate or be construed as a waiver of      any other existing or future default or defaults, whether of a like or of      a different character.                                                                                                      |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| 12)    | THE      INTERPRETATION AND PERFORMANCE OF THE AGREEMENT SHALL BE IN ACCORDANCE      WITH THE LAWS OF MISSOURI, EXCLUDING CONFLICTS OF LAW PRINCIPLES THAT      WOULD REQUIRE THE APPLICATION OF THE LAWS OF A DIFFERENT      JURISDICTION.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| 13)    | Exhibit      A attached hereto is incorporated into the Agreement in its      entirety.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| 14)    | This      Agreement amends and restates the currently effective Storage Service      Agreement between the parties.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| 15)    | Pursuant      to Section 5.1(a), Rate Schedule NNT, of MRT’s Tariff, Customer shall have      the option to reduce its FSS capacity in proportion to Customer’s      reduction of the MDQ under FTS Contract  3310, Section 18 of the      General Terms and Conditions, between MRT and      Customer.  Customer must exercise its option within thirty (30)      days after service commences to the Bypassing Customer over its direct      connection with MRT, with the reduction of FSS capacity becoming effective      reasonably concurrent with the reduction of FTS capacity, taking into      consideration that any gas that Customer may be required to remove from      storage as a result of the FSS capacity reduction must be undertaken in a      reasonable manner and in a reasonable time period. |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| 16)    | Pursuant      to Section 15.3, General Terms and Conditions, of MRT’s Tariff, the      parties agree that Customer has the Right of First Refusal      (ROFR).  If Customer chooses to exercise its ROFR, it shall do      so by following the procedures applicable to the exercise of a ROFR      provided for in the Tariff.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |

| (a) | General:  In      consideration for Customer's continuing compliance with the provisions of      the Transportation Service Agreement ("Agreement") specified above, the      transportation rates and charges as defined below for the specified      services provided under the Agreement only apply to receipts from, and      subsequent deliveries to, the Points of Receipt and Delivery, quantities      and/or time periods described herein and to reserved capacity necessary to      effect such service.  In addition to any rate or amount referred      to herein (including discounted rates, Negotiated Rates, overrun rates and      maximum tariff rates), Customer shall pay any applicable charges,      penalties, surcharges, fees, taxes, settlements and/or direct billed      amounts provided for in MRT's Tariff.  In any event, the rate in      any month shall never be below MRT's applicable minimum tariff rate for a      discount rate transaction.  For a Negotiated Rate transaction,      the rate in any month shall never be below MRT's applicable minimum tariff      rate, unless MRT otherwise agrees.  MRT shall not be responsible      for the payment and satisfaction of any taxes assessed or levied on the      receipt, transmission (and any activities in connection therewith),      delivery, use and/or consumption with respect to gas delivered or received      by Customer, unless MRT agreesotherwise. |
|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (b)    | Inability to Collect      Negotiated Rates:    If this Exhibit A covers a      Negotiated Rate transaction, and MRT is unable to collect Negotiated Rates      due to a change in Commission policy or rejection of the transaction by      the Commission prior to or during the term of such transaction, then,      unless the parties agree otherwise, Customer shall pay the maximum tariff      rate for the services.  In such event, MRT shall notify Customer      in writing of the requirement to pay maximum tariff rates and, if the      maximum tariff rates are greater than the Negotiated Rates under such      transaction, Customer shall have no more than thirty (30) days from the      date of such notification to give notice in writing of termination of the      applicable Agreement, with such termination to be effective no later than      the end of the month following the month in which such termination notice      is received. |
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|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| (c)    | Description of      Rate:                              Negotiated Rate  [         ]                                Discounted Rate [ X ]     (Check      one)                                                                                                                                                                                                                                                                                                                                                              |

|              (i)   | Base      Rate:  Customer’s rate for service shall be the maximum Base      Tariff Rate(s) set forth in MRT’s Tariff from time to time; provided,      however, that during the Term of this Agreement, Customer’s Base Rate(s)      shall not  exceed the maximum Base Rate Deliverability,      Capacity, and Injection/Withdrawal Charges  set forth on      Twenty-Seventh  Revised Sheet No. 8 (effective November 1,      2007), or if as a result of a rate design change in a Section 4 or 5 rate      proceeding, the equivalent of the maximum Base Rate Deliverability,      Capacity, and Injection/Withdrawal Charge(s) set forth on Twenty-Seventh      Revised Sheet No. 8 when computed at an assumed 100% load factor as      follows: $0.3121. |
|------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|              (ii)  | Surcharges:      All applicable Rate Schedule FSS surcharges, penalties, charges, fees,      taxes, settlements, direct billed amounts and Fuel Use and LUFG      retentions.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |

| (d)                  Term      of Rate: | Begin      Date(s): | April      1, 2008                                                                                                                                                                                                                                                                                  |
|------------------------------------------------------------------------------------------------|---------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                           |                |                                                                                                                                                                                                                                                                                                |
|                                                                                           | End      Date(s):   | April      30, 2013 and continuing thereafter unless and until terminated by either      MRT or Customer by written notice or electronically via the Internet as      permitted or required by MRT, to the other delivered at least one (1) year      prior to the date of the intendedtermination. |

| (e) | Authorized      Overrun:  For discounted rate transactions, any      authorized overrun quantities shall be at the assumed 100% load factor      derivative of the Base Rate(s) set forth in (c) above, plus all applicable      Rate Schedule FSS surcharges, penalties, and Fuel Use and LUFG      retentions. |
|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| (f) | Rate-Related      Provisions: |
|-----|-------------------------------|

|   | (i) | Consideration      for Rate Granted:  MRT agrees to the rates specified in this      Exhibit A in exchange for Customer's agreement to forego credits or other      benefits to which Customer would otherwise be entitled under the      Agreement, but only to the extent such credits or benefits would result in      a greater economic benefit over the term of this Exhibit A than that      represented by the agreed-upon rate.  Accordingly, unless MRT      otherwise agrees, Customer will not receive credits (with the exception of      (1) penalty revenue credits provided pursuant to Section 34 of the General      Terms and Conditions of MRT's Tariff, and (2) capacity release credits)      from rates, refunds or other revenues collected by MRT or Customer if to      do so would effectively result in a lower rate or greater economic benefit      to Customer; provided, however, that (I) for a Customer taking service      under a discount or recourse rate agreement, the rate in any month shall      never be above MRT's applicable maximum tariff rate, and (II) MRT and a      Customer taking service under a Negotiated Rate agreement can agree      pursuant to Section 14.2 of the General Terms and Conditions of MRT's      Tariff that MRT will retain some or all of the capacity release credits to      the extent those credits exceed the amount of the Customer's invoiced      demand component.  If the parties' agreement to the foregoing is      determined invalid or if Customer seeks to obtain credits or benefits      inconsistent therewith, unless MRT otherwise agrees, it will have the      right to immediately terminate or modify any provisions of this Exhibit A      that would allow Customer to pay amounts less than the maximum applicable      tariff rate. |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (ii) | Regulatory      Authority:  This Exhibit A is subject to Section 30 of the      General Terms and Conditions of MRT's Tariff.  MRT and Customer      hereby acknowledge that this Exhibit A is subject to all valid and      applicable federal and local laws and to the orders, rules and regulations      of any constituted federal or local regulatory body or governmental      authority having jurisdiction.  Any provision of this Exhibit A      which is determined by any court or regulatory body having jurisdiction to      be invalid or unenforceable will be ineffective to the extent of such      determination only, without invalidating, or otherwise affecting the      validity of, the remaining provisions.  Except as otherwise      provided in subsection (b) above, unless the parties agree otherwise, if      MRT  reasonably determines that a federal or local law, or      order, rule or regulation of any governmental authority having or      asserting jurisdiction (1) requires performance by MRT that is      inconsistent with the terms of this Exhibit A, or (2) conditions or      prohibits the granting of selective discounts or other rates specified in      paragraph (d) of this Exhibit A, then MRT and Customer shall promptly take      all reasonable actions in good faith to enter into alternative      arrangements that will secure to the maximum extent practicable for each      party all of the benefits of the transaction set out in this Agreement;      provided however, that MRT shall not be required to enter into or continue      arrangements that would result in a greater economic detriment to MRT than      existed prior to the regulatory event orchange. |
|--------|------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| CENTERPOINT      ENERGY - MISSISSIPPI RIVER | LACLEDE      GAS COMPANY                           |
|---------------------------------------------|----------------------------------------------------|
|                                        | TRANSMISSION      CORPORATION                      |   |   |   |   |
|                                        |                                               |   |   |   |   |
|                                        |                                               |   |   |   |   |
| By:                                         | /s/      Robert Trost                              |   | By: | /s/      Kenneth J. Neises |   |
| Name                                        | Robert      Trost                                  |   | Name: | Kenneth      J. Neises |   |
| Title                                       | Division      Vice President – Marketing MRT |   | Title: | Executive      Vice President |   |
|                                        |                                               |   |   |   |   |
| Date:                                       | March      18, 2008                                |   | Date: | March      18, 2008 |   |
|                                        |                                               |   |   |   |   |