<PAGE>

                                                                 EXHIBIT 10.4(d)

                                                          Contract No. 31044000A
                                                                   GGC- 10474-CO

         No-Notice Storage and Transportation Delivery Service Agreement
                               Rate Schedule NNT-1

                                     between

                         COLORADO INTERSTATE GAS COMPANY

                                       and

                               GREELEY GAS COMPANY
                    (A DIVISION OF ATMOS ENERGY CORPORATION)

                             Dated: OCTOBER 1, 2002

<PAGE>

                                                          Contract No. 31044000A

         NO-NOTICE STORAGE AND TRANSPORTATION DELIVERY SERVICE AGREEMENT
                               RATE SCHEDULE NNT-1

         The Parties identified below, in consideration of their mutual
         promises, agree as follows:

1.       TRANSPORTER: COLORADO INTERSTATE GAS COMPANY

2.       SHIPPER: GREELEY GAS COMPANY, (A DIVISION OF ATMOS ENERGY CORPORATION)

3.       APPLICABLE TARIFF: Transporter's FERC Gas Tariff, First Revised Volume
         No. 1, as the same may be amended or superseded from time to time ("the
         Tariff").

4.       CHANGES IN RATES AND TERMS: Transporter shall have the right to propose
         to the FERC changes in its rates and terms of service, and this
         Agreement shall be deemed to include any changes which are made
         effective pursuant to FERC Order or regulation or provisions of law,
         without prejudice to Shipper's right to protest the same.

5.       TRANSPORTATION SERVICE: Transportation Service at and between Point of
         Withdrawal and Primary Point(s) of Delivery shall be on a firm basis.
         Delivery of quantities at Secondary Point(s) shall be in accordance
         with the Tariff.

6.       DELIVERY: Transporter agrees to transport and deliver Delivery
         Quantities to Shipper (or for Shipper's account) at the Point(s) of
         Delivery identified in the attached Exhibit "A." Minimum and Maximum
         delivery pressures, as applicable, are listed on Exhibit "A."

7.       RATES AND SURCHARGES: As set forth in Exhibit "B." For example,
         Transporter and Shipper may agree that a specified discount rate will
         apply: (a) only to certain specified firm service entitlements under
         this Agreement; (b) only if specified quantity levels are actually
         achieved under this Agreement (with higher rates, charges, and fees
         applicable to all quantities above those levels, or to all quantities
         under the Agreement if the specified levels are not achieved); (c) only
         to production reserves committed by the Shipper; (d) only during
         specified time periods; (e) only to specified Point(s) of Receipt,
         Point(s) of Delivery, mainline area segments, supply areas,
         Transportation routes, or defined geographical areas under the
         associated Transportation Agreement; or (f) in a specified relationship
         to the quantities actually Delivered (i.e., that the rates shall be
         adjusted in a specified relationship to quantities actually Delivered);
         provided, however, that any such discounted rates set forth above shall
         be between the minimum and maximum rates applicable to the service
         provided under this Agreement.

         In addition, the discount agreement may include a provision that if one
         rate component which was at or below the applicable maximum rate at the
         time the discount agreement was executed subsequently exceeds the
         applicable maximum rate due to a change in Transporter's maximum rates
         so that such rate component must be adjusted downward to equal the new
         applicable maximum rate, then other rate components may be adjusted
         upward to achieve the agreed overall rate, so long as none of the
         resulting rate components exceed the maximum rate applicable to that
         rate component. Such changes to rate components shall be applied
         prospectively, commencing with the date a Commission order accepts
         revised tariff sheets. However, nothing contained herein shall be
         construed to alter a refund obligation under applicable law for any
         period during which rates that had been charged under a discount
         agreement exceeded rates which ultimately are found to be just and
         reasonable.

8.       MAXIMUM DELIVERY QUANTITY (" MDQ"): 12,985 Dth per Day
         MAXIMUM AVAILABLE CAPACITY ("MAC"): 422,142 Dth
         MAXIMUM DAILY INJECTION QUANTITY ("MDIQ"): 4,151 Dth per Day
         MAXIMUM DAILY WITHDRAWAL QUANTITY ("MDWQ"): 12,985 Dth per Day

         All storage entitlements as stated herein ("MAC", "MDIQ", and "MDWQ")
         are based on an Average Thermal Content of Gas in Storage of 1,000 Btu
         per cubic foot. The Available Daily Injection Quantity ("ADIQ"),
         Available Daily Withdrawal Quantity ("ADWQ"), and storage entitlements
         shall be subject to the General Terms and Conditions of the Tariff and
         stated on Transporter's Electronic Bulletin Board.

                                        1

<PAGE>

                                                          Contract No. 31044000A

9.       NEGOTIATED RATE AGREEMENT: NO

10.      TERM OF AGREEMENT: Beginning: OCTOBER 1, 2002
                            Extending through: APRIL 30, 2005

11.      NOTICES, STATEMENTS, AND BILLS:

         TO SHIPPER:

             INVOICES FOR TRANSPORTATION:
                Greeley Gas Company, (a division of Atmos Energy Corporation)
                160 Lincoln Centre Three
                5430 LBJ Freeway
                Dallas, Texas 75240
                Attention: John Hack

             ALL NOTICES:

                Greeley Gas Company, (a division of Atmos Energy Corporation)
                160 Lincoln Centre Three
                5430 LBJ Freeway
                Dallas, Texas 75240
                Attention: John Hack

         TO TRANSPORTER:

             See Notices, Payments, Nominations, and Points of Contact
             sheets in the Tariff.

12.      SUPERSEDES AND CANCELS PRIOR AGREEMENT: When this Agreement becomes
         effective, it shall supersede and cancel the following agreement
         between the Parties: The No-Notice Storage and Transportation Delivery
         Service Agreement between Transporter and Shipper dated October 1,
         2001, referred to as Transporter's Agreement No. 31044000.

13.      ADJUSTMENTS TO RATE SCHEDULE NNT-1 AND/OR GENERAL TERMS AND CONDITIONS:
         N/A.

14.      INCORPORATION BY REFERENCE: This Agreement in all respects shall be
         subject to the provisions of Rate Schedule NNT-1 and to the applicable
         provisions of the General Terms and Conditions of the Tariff as filed
         with, and made effective by, the FERC as same may change from time to
         time (and as they may be amended pursuant to Section 12 of the
         Agreement).

         IN WITNESS WHEREOF, the parties hereto have executed this Agreement.

TRANSPORTER:                                SHIPPER:

COLORADO INTERSTATE GAS COMPANY             GREELEY GAS COMPANY, (a division of
                                            Atmos Energy Corporation

By: /s/ Thomas L. Price                     By: /s/ Robert E. Mattingly
    ------------------------                    -------------------------------
        Thomas L. Price                     Name: ROBERT E. MATTINGLY
         Vice President                     Title: VICE PRESIDENT

[STAMP OF LEGAL DEBT]                       Accepted and agreed to this
                                            18th day of November, 2002.
Accepted and agreed to this
6th day of November, 2002.

                                        2

<PAGE>

                                                          Contract No. 31044000A

                                   EXHIBIT "A"

         No-Notice Storage and Transportation Delivery Service Agreement
                                     between
                         COLORADO INTERSTATE GAS COMPANY
                                       and

                              GREELEY GAS COMPANY,
                    (A DIVISION OF ATMOS ENERGY CORPORATION)

                              dated: OCTOBER 1,2002

1. Shipper's Maximum Delivery Quantity ("MDQ"): 12,985 Dth per Day.

2. Shipper's Maximum Available Capacity ("MAC"): 422,142 Dth.

3. Shipper's Maximum Daily Injection Quantity ("MDIQ"): 4,151 Dth per Day.

4. Shipper's Maximum Daily Withdrawal Quantity ("MDWQ"): 12,985 Dth per Day.

<TABLE>
<CAPTION>
                                       Primary Point(s) of
Primary Point(s) of Delivery             Delivery Quantity                Minimum Delivery                   Maximum Delivery
                                       (Dth per Day) (Note 1)            Pressure (p.s.i.g.)                Pressure (p.s.i.g.)
-------------------------------------------------------------------------------------------------------------------------------
<S>                                    <C>                               <C>                                <C>
CANON CITY GROUP

     Canon City                               7,799                                                              (Note 2)

     Colorado State Penitentiary                552                                                                100

     Engineer's Station 476+78                   10                                                                 LP

     Florence City Gate                       1,823                                                                 60

     Fremont County Industrial Park              16                                                                 LP

     Penrose City Gate                          248                                                                 60

     Penrose PBS-2                              238                                                                 LP

     Portland City Gate                          65                                                                100

     Pritchett City Gate                         65                                                                150
                                             ------
       TOTAL CANON CITY GROUP                10,816
-------------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                       A-1

<PAGE>

                                                          Contract No. 31044000A

                                   EXHIBIT "A"

<TABLE>
<CAPTION>
                                            Primary Point(s) of
                                             Delivery Quantity           Minimum Delivery        Maximum Delivery
Primary Point(s) of Delivery                (Dth per Day) (Note 1)      Pressure (p.s.i.g.)     Pressure (p.s.i.g.)
-------------------------------------------------------------------------------------------------------------------
<S>                                         <C>                         <C>                     <C>
 McCLAVE GROUP

    McClave Delivery                                 650                                                500

    Brandon Station                                   52                                                350

    Eads City Gate                                   382                                                 60

    Highline Taps:
    Nepolan (Bent County)                              8                                                 LP

    Penrose (Fremont County)                          20                                                 LP

    Piggery (Fremont County)                           7                                                 LP

    L.J Stafford (Baca County)                         7                                                 LP
                                                  ------
    TOTAL McCLAVE GROUP                            1,126
                                                  ------
SPRINGFIELD                                        2,993                                                 LP
                                                  ------
    TOTAL                                         14,935
-------------------------------------------------------------------------------------------------------------------
</TABLE>

NOTES:

(1) The sum of the Delivery Quantities at Point(s) of Delivery shall not be
greater than Shipper's MDQ.

(2) Line Pressure but not less than 100 p.s.i.g.

                                       A-2

<PAGE>

                                                          Contract No. 31044000A

                                   EXHIBIT "B"

         No-Notice Storage and Transportation Delivery Service Agreement
                                     between
                        COLORADO INTERSTATE GAS COMPANY
                                       and
                              GREELEY GAS COMPANY,
                    (a division of Atmos Energy Corporation)

                             Dated: OCTOBER 1, 2002

<TABLE>
<CAPTION>
                                             Commodity
                                           Injection Rate         Fuel Reimbursement         Surcharges
-------------------------------------------------------------------------------------------------------
<S>                                        <C>                    <C>                        <C>
Storage Injection.................           (Note 1)                   (Note 2)               (Note 3)
------------------------------------------------------------------------------------------------------
</TABLE>

<TABLE>
<CAPTION>
                                        R1 Reservation            Commodity
    Primary Point(s) of Delivery             Rate                Delivery Rate       Term of Rate          Surcharges
---------------------------------------------------------------------------------------------------------------------
<S>                                     <C>                      <C>                <C>                    <C>
 As listed on Exhibit "A"                  (Note 1)                 (Note 1)        Through 4/30/05         (Note 3)
-------------------------------------------------------------------------------------------------------------------
</TABLE>

  NOTES:

  (1)    Unless otherwise agreed by the Parties in writing, the rates for
         service hereunder shall be Transporter's maximum rates for service
         under Rate Schedule NNT-1 or other superseding Rate Schedule, as such
         rates may be changed from time to time.

  (2)    Fuel Reimbursement shall be as stated on Transporter's Schedule of
         Surcharges and Fees in the Tariff, as they may be changed from time to
         time, unless otherwise agreed between the Parties.

  (3)    Applicable Surcharges:

         All applicable surcharges, unless otherwise specified, shall be the
         maximum surcharge rate as stated in the Schedule of Surcharges and Fees
         in the Tariff, as such surcharges may be changed from time to time.

         GAS QUALITY CONTROL SURCHARGE:

         The Gas Quality Control Reservation Rate and commodity rate shall be
         assessed pursuant to Article 20 of the General Terms and Conditions as
         set forth in the Tariff.

         GRI:

         The GRI Surcharge shall be assessed pursuant to Article 18 of the
         General Terms and Conditions as set forth in the Tariff.

         ORDER NO. 636 TRANSITION COST MECHANISM:

         Surcharge(s) shall be assessed pursuant to Article 21 of the General
         Terms and Conditions as set forth in the Tariff.

         ACA:

         The ACA Surcharge shall be assessed pursuant to Article 19 of the
         General Terms and Conditions as set forth in the Tariff.