----

----

----

|     | The Parties identified below, in consideration of      their mutual promises, agree as follows:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |   |   |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------|
|               |
| 1.       | Transporter:      COLORADO INTERSTATE GAS COMPANY                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |   |   |
|               |
| 2.       | Shipper:      PUBLIC SERVICE COMPANY OF COLORADO                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |   |   |
|               |
| 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.       | For      the period October 1, 2001 through April 30, 2007:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |   |   |

|                                                         |   |                     |
|--------------------------------------------------------------|--------|--------------------------|
| Maximum      Delivery Quantity (“MDQ”):          |   | 637,144 Dth      per Day |
| Maximum      Available Capacity (“MAC”):         |   | 20,712,888      Dth      |
| Maximum Daily      Injection Quantity (“MDIQ”):  |   | 203,691 Dth      per Day |
| Maximum Daily      Withdrawal Quantity (“MDWQ”): |   | 637,144 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. |   |   |   |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------|
|               |
| 9.       | Negotiated Rate      Agreement: No                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   |   |   |

|   |                    |   |                    |   |                      |   |
|--------|-------------------------|--------|-------------------------|--------|---------------------------|--------|
| 10.    | Term      of Agreement: |   | Beginning:              |   | October 1,      2001 |
|   |                    |   | Extending      through: |   | April 30,      2007  |

| 11.   | Notices,      Statements, and Bills: |
|-----------------|--------------------------------------|

|         |                   |                              |   |                                                                                      |
|--------------|------------------------|-----------------------------------|--------|-------------------------------------------------------------------------------------------|
|    |
|         | To      Shipper:  |
|         |                   | Invoices      for Transportation: |
|         |                   |                              |   | Public      Service Company of Colorado                                                   |
|         |                   |                              |   | 1099 18th      Street, Suite 3000                                                    |
|         |                   |                              |   | Denver,      Colorado 80202                                                               |
|         |                   |                              |   | Attention:      Vivian Ruth                                                               |
|         |                   |                              |   |                                                                                      |
|         |                   | All      Notices:                 |
|         |                   |                              |   | Public      Service Company of Colorado                                                   |
|         |                   |                              |   | 1099 18th      Street, Suite 3000                                                    |
|         |                   |                              |   | Denver,      Colorado 80202                                                               |
|         |                   |                              |   | Attention:      Kurt Haeger                                                               |
|         |                   |                              |   |                                                                                      |
|         | 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 April 1, 1999, and referred to      as Transporter’s Agreement No. 31026000E.                   |   |   |                     |
|-----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------------------------|
|            |
| 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). |   |   |           |

----

|                                 |                                          |                                    |        |                                    |   |   |   |
|--------------------------------------|-----------------------------------------------|-----------------------------------------|-------------|-----------------------------------------|--------|--------|--------|
| Transporter:                         |                                          | Shipper:                                |        |
|                                 |                                          |                                    |        |                                    |   |   |   |
| COLORADO      INTERSTATE GAS COMPANY |                                          | PUBLIC      SERVICE COMPANY OF COLORADO |        |
|                                 |                                          |                                    |        |
|                                 |                                          |                                    |        |
| By:                                  | /s/ THOMAS L.      PRICE                      |                                    | By:         |        /s/ PAUL J.      BONAVIA    |   |
|                                 | Thomas L.      Price Vice      President |                                    | Name:Title: | Paul J.      BonaviaVice      President |   |
|                                 |                                          |                                    |        |                                    |   |
|                                 |                                          |                                    |        |                                    |   |   |   |
| Approved                             |                                          |                                    |        |                                    |   |   |
| By:                                  |                                          | [ILLEGIBLE]                             |        |                                    |   |   |   |
|                                 |                                          |                                    |        |                                    |   |   |
|                                 |                                          | Legal      Dept.                        |        |                                    |   |   |   |
|                                 |                                          |                                    |        |                                    |   |   |   |
| Accepted and      agreed to this     |                                          | Accepted and      agreed to this day of |        |

|   |   |        |   |   |    |   |   |   |   |   |   |        |   |   |    |   |   |   |
|--------|--------|-------------|--------|--------|---------|--------|--------|--------|--------|--------|--------|-------------|--------|--------|---------|--------|--------|--------|
| 11     |   | day      of |   | March  | , 2002. |   |        |   |   |   |   | day      of |   |   | , 2002. |   |   |   |
|   |   |        |   |   |    |   |   |   |   |   |   |        |   |   |    |   |   |   |

----

| 1.   | Shipper’s      Maximum Delivery Quantity (“MDQ”): 637,144 Dth per      Day          |   |   |   |
|----------------|-------------------------------------------------------------------------------------------------------|--------|--------|--------|
|           |
| 2.   | Shipper’s      Maximum Available Capacity (“MAC”): 20,712,888      Dth              |   |   |   |
|           |
| 3.   | Shipper’s      Maximum Daily Injection Quantity (“MDIQ”): 203,691 Dth per      Day  |   |   |   |
|           |
| 4.   | Shipper’s      Maximum Daily Withdrawal Quantity (“MDWQ”): 637,144 Dth per      Day |   |   |   |

|                     |
|--------------------------|
|                     |   |   |   |   |   | Primary      Point(s) of |   |   |   |   |   |   |   |   |
| Primary      Point(s) of |   |   |   |   |   | Delivery      Quantity |   |   | Minimum      Delivery |   |   | Maximum      Delivery |   |   |
| Delivery      (Note 1)   |   | Effective      Dates |   |   | (Dth      per Day) (Note A) |   |   | Pressure      (p.s.i.g.) |   |   | Pressure      (p.s.i.g.) |   |   |
| Brush      Group       |   |   | 10/01/01 -      4/30/07 |   |   |   | 4,000   |   |   |   |   |   |   |   |   |   |   |
|------------------------|--------|--------|-------------------------|--------|--------|--------|---------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|
|                   |   |   |                    |   |   |   |    |   |   |   |   |   |   |   |   |   |   |
| Corral      Gulch      |   |   | 10/01/01 -      4/30/07 |   |   |   | 0       |   |   |   |   |   |   |   | 700    |   |   |
|                   |   |   |                    |   |   |   |    |   |   |   |   |   |   |   |   |   |   |
| East Denver      Group |   |   | 10/01/01 -      4/30/07 |   |   |   | 534,864 |   |   |   |   |   |   |   |   |   |   |
|                   |   |   |                    |   |   |   |    |   |   |   |   |   |   |   |   |   |   |
| Ft.      Lupton        |   |   | 10/01/01 -      4/30/07 |   |   |   | 68,280  |   |   |   |   |   |   |   | 350    |   |   |
|                   |   |   |                    |   |   |   |    |   |   |   |   |   |   |   |   |   |   |
| Greeley      Group     |   |   | 10/01/01 -      4/30/07 |   |   |   | 0       |   |   |   |   |   |   |   |   |   |   |
|                   |   |   |                    |   |   |   |    |   |   |   |   |   |   |   |   |   |   |
| Little      Horse      |   |   | 10/01/01 -      4/30/07 |   |   |   | 0       |   |   |   |   |   |   |   | 700    |   |   |
|                   |   |   |                    |   |   |   |    |   |   |   |   |   |   |   |   |   |   |
| Lodgepole              |   |   | 10/01/01 -      4/30/07 |   |   |   | 0       |   |   |   |   |   |   |   | 753    |   |   |
|                   |   |   |                    |   |   |   |    |   |   |   |   |   |   |   |   |   |   |
| Pueblo      Group      |   |   | 10/01/01 -      4/30/07 |   |   |   | 30,000  |   |   |   |   |   |   |   |   |   |   |
|                   |

|     (A)   | Attached      below is a table entitled “Primary Points of Delivery” that details the      individual Primary Point(s) of Delivery, Points of Delivery Quantity, and      delivery pressures. Shipper shall have the right to take Delivery of      quantities up to the group aggregate limit listed above at any point      within the group subject to the lesser of the Primary Point of Delivery      Quantity or the meter capacity. |
|-----------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

----

|                       |   |                 |                    |   |                        |                     |    |                     |                  |   |                     |                  |   |   |
|----------------------------|--------|----------------------|-------------------------|--------|-----------------------------|--------------------------|---------|--------------------------|-----------------------|--------|--------------------------|-----------------------|--------|--------|
|                       |   |                 |                    |   |                        | Primary      Point(s) of |    |                     |                  |   |                     |                  |   |   |
| Primary      Point(s) of   |   |                 |                    |   |                        | Delivery      Quantity   |    |                     | Minimum      Delivery |   |                     | Maximum      Delivery |   |   |
| Delivery      (Note 1)     |   | Effective      Dates |                    |   | (Dth      per Day) (Note 2) |                     |    | Pressure      (p.s.i.g.) |                  |   | Pressure      (p.s.i.g.) |                  |   |
|                       |
| Ft.      Lupton            |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 68,280  |                     |                  |   |                     |                  |   |   | 350 |   |   |
|                       |
| EAST      DENVER GROUP:    |   |                 |                    |   |                        |                     |    |                     |                  |   |                     |                  |   |   |   |   |   |
|                       |   |                 |                    |   |                        |                     |    |                     |                  |   |                     |                  |   |   |   |   |   |
| Arapahoe      Hills        |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 156     |                     |                  |   |                     |                  |   | LP     |   |   |
|                       |   |                 |                    |   |                        |                     |    |                     |                  |   |                     |                  |   |   |   |   |   |
| East      Denver           |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 482,040 |                     |                  |   |                     |                  |   |   | 250 |   |   |
|                       |   |                 |                    |   |                        |                     |    |                     |                  |   |                     |                  |   |   |   |   |   |
| East      Quincy           |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 48,464  |                     |                  |   | 280                      |                  |   |   |   |   |   |
|                       |   |                 |                    |   |                        |                     |    |                     |                  |   |                     |                  |   |   |   |   |   |
| First Creek      (Note 3)  |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 0       |                     |                  |   |                     |                  |   |   | 920 |   |   |
|                       |   |                 |                    |   |                        |                     |    |                     |                  |   |                     |                  |   |   |   |   |   |
| Green Valley      (Note 3) |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 0       |                     |                  |   | 200                      |                  |   |   |   |   |   |

----

|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
|------------------------------|--------|----------------------|-------------------------|--------|-----------------------------|--------------------------|---------|--------------------------|-----------------------|---------------|--------------------------|-----------------------|--------|--------|--------|--------|--------|
|                         |
|                         |   |                 |                    |   |                        | Primary      Point(s) of |    |                     |                  |          |                     |                  |   |   |
| Primary      Point(s) of     |   |                 |                    |   |                        | Delivery      Quantity   |    |                     | Minimum      Delivery |          |                     | Maximum      Delivery |   |   |
| Delivery      (Note 1)       |   | Effective      Dates |                    |   | (Dth      per Day) (Note 2) |                     |    | Pressure      (p.s.i.g.) |                  |          | Pressure      (p.s.i.g.) |                  |   |
|                         |
| Grimm                        |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 0       |                     |                  |          | 200                      |                  |   |   |   |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Hidden      Village          |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 521     |                     |                  |          |                     |                  |   | LP     |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Inspiration      Point       |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 106     |                     |                  | (Note      4) |                     |                  |   |   |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Mesa                         |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 0       |                     |                  |          | 275                      |                  |   |   |   |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Schaeffer-Weeks              |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 2,948   |                     |                  |          | 200                      |                  |   |   |   |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Second Creek      (Note 3)   |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 1,424   |                     |                  |          | 400                      |                  |   |   |   |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Whispering      Pines        |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 270,805 |                     |                  | (Note      5) |                     |                  |   | 650    |   |   |
|                         |
| PUEBLO      GROUP:           |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Air      Base                |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 1,559   |                     |                  |          |                     |                  |   |   | 100    |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| B.F.      Goodrich           |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 159     |                     |                  |          | 100                      |                  |   |   |   |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Colorado Fire      Clay Co.  |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 256     |                     |                  |          |                     |                  |   | LP     |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Comanche      Power Plant    |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 147     |                     |                  |          | 200                      |                  |   |   |   |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Dave Fountain      Tap       |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 64      |                     |                  |          |                     |                  |   | LP     |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Devine                       |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 962     |                     |                  |          |                     |                  |   |   | 150    |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Hendrick      Tap            |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 90      |                     |                  |          |                     |                  |   | LP     |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Pinon                        |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 39      |                     |                  |          |                     |                  |   | LP     |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Pueblo County      Poor Farm |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 1,689   |                     |                  |          |                     |                  |   |   | 150    |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Pueblo      North            |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 21,310  |                     |                  |          |                     |                  |   |   | 150    |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Pueblo South      (Note 6)   |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 43,790  |                     |                  |          |                     |                  |   |   | 225    |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Pueblo      West             |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 4,158   |                     |                  |          |                     |                  |   |   | 275    |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Vineland                     |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 650     |                     |                  |          |                     |                  |   |   | 100    |   |   |
|                         |   |                 |                    |   |                        |                     |    |                     |                  |          |                     |                  |   |   |   |   |   |
| Welton Ditch      Company    |   |                 | 10/01/01 -      4/30/07 |   |                        |                     | 127     |                     |                  |          |                     |                  |   | LP     |   |   |

----

|                     |
|--------------------------|
|                     |   |   |   |   |   | Primary      Point(s) of |   |   |   |   |   |   |   |   |
| Primary      Point(s) of |   |   |   |   |   | Delivery      Quantity |   |   | Minimum      Delivery |   |   | Maximum      Delivery |   |   |
| Delivery      (Note 1)   |   | Effective      Dates |   |   | (Dth      per Day) (Note A) |   |   | Pressure      (p.s.i.g.) |   |   | Pressure      (p.s.i.g.) |   |   |

| BRUSH      GROUP (Note 3):    |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|-------------------------------|--------|--------|-------------------------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|--------|
|                          |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| 3T Cattle      Company        |   |   | 10/01/01 -      4/30/07 |   |   |   | 407    |   |   |   |   |   |   | LP     |   |   |
|                          |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Adena      School             |   |   | 10/01/01 -      4/30/07 |   |   |   | 135    |   |   |   |   |   |   |   | 90     |   |   |
|                          |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Brush                         |   |   | 10/01/01 -      4/30/07 |   |   |   | 4,741  |   |   |   |   |   |   |   | 125    |   |   |
|                          |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Engineer      Station 543+17  |   |   | 10/01/01 -      4/30/07 |   |   |   | 83     |   |   |   |   |   |   |   | 50     | (7)    |   |
|                          |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Fort Morgan      Country Club |   |   | 10/01/01 -      4/30/07 |   |   |   | 272    |   |   |   |   |   |   |   | 150    |   |   |
|                          |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Front Range      Airport      |   |   | 10/01/01 -      4/30/07 |   |   |   | 653    |   |   |   |   |   |   | LP     |   |   |
|                          |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| John Yager      Tap           |   |   | 10/01/01 -      4/30/07 |   |   |   | 135    |   |   |   |   |   |   | LP     |   |   |
|                          |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Knox      Tap                 |   |   | 10/01/01 -      4/30/07 |   |   |   | 83     |   |   |   |   |   |   |   | 90     |   |   |
|                          |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Log      Lane                 |   |   | 10/01/01 -      4/30/07 |   |   |   | 1,361  |   |   |   |   |   |   |   | 90     |   |   |
|                          |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Ruebel      Tap               |   |   | 10/01/01 -      4/30/07 |   |   |   | 967    |   |   |   |   |   |   | LP     |   |   |
|                          |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Tom      Cooper               |   |   | 10/01/01 -      4/30/07 |   |   |   | 163    |   |   |   |   |   |   | LP     |   |   |
|                          |   |   |                    |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Wiggins/Roundup               |   |   | 10/01/01 -      4/30/07 |   |   |   | 0      |   |   |   | 600    |   |   |   |   |   |   |
|                          |

| (1)   | Information      regarding Point(s) of Receipt and Point(s) of Delivery, including legal      descriptions, measuring Parties, and interconnecting Parties, shall be      posted on Transporter’s Electronic Bulletin Board. Transporter shall      update such information from time to time to include additions, deletions,      or any other revisions deemed appropriate by Transporter.                        |   |   |   |
|-----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------|
|            |
| (2)   | The sum of      the Delivery Quantities at Point(s) of Delivery shall be equal to or less      than Shipper’s MDQ.                                                                                                                                                                                                                                                                                                   |   |   |   |
|            |
| (3)   | The gas      delivered at this Point of Delivery shall be equal to an input factor      (heating value divided by the square root of the specific gravity) of      1,319, plus or minus 6 percent, unless otherwise agreed to by Shipper      and Transporter.                                                                                                                                                        |   |   |   |
|            |
| (4)   | Inspiration      Point maximum pressure is line pressure not less than 350 p.s.i.g. in      November, December, January, and February; not less than 325 p.s.i.g. in      September, October, March, and April; and not less than 260 p.s.i.g. in      May, June, July, and August.                                                                                                                                        |   |   |   |
|            |
| (5)   | Whispering      Pines delivery pressure shall not exceed 650, but shall be not less than      350 in November, December, January, and February; not less than 325 in      September, October, March, and April; and not less than 260 in May, June,      July, and August.                                                                                                                                                 |   |   |   |
|            |
| (6)   | Deliveries at      Transporter’s South Pueblo Point of Delivery shall be measured at      Transporter’s South Pueblo measurement station, and delivery shall be at      the terminus of Transporter’s pipeline located at Shipper’s regulator      station at the intersection of U.S. Highway 50 and Santa Fe Drive.      Delivery pressure shall be determined at the point of      measurement. |   |   |   |
|            |
| (7)   | Shipper may      take gas at this Point of Delivery at pressures up to 90 p.s.i.g. when      Transporter has such pressure available.                                                                                                                                                                                                                                                                                      |   |   |   |

----

|                   |   |                |   |                    |   |          |
|------------------------|--------|---------------------|--------|-------------------------|--------|---------------|
|                   |
|                   |   | Commodity           |   |                    |   |          |
|                   |   | Injection      Rate |   | Fuel      Reimbursement |   | Surcharges    |
|                   |
| Storage      Injection |   | (Note      1)       |   | (Note      2)           |   | (Note      3) |
|                   |

|                                      |   |                |   |               |   |                    |   |          |
|-------------------------------------------|--------|---------------------|--------|--------------------|--------|-------------------------|--------|---------------|
|                                      |
|                                      |   | R1      Reservation |   | Commodity          |   |                    |   |          |
| Primary      Point(s) of Delivery         |   | Rate                |   | Delivery      Rate |   | Term      of Rate       |   | Surcharges    |
|                                      |
| As listed on      Exhibit “A” |   | (Note      1)       |   | (Note      1)      |   | 10/01/01 -      4/30/07 |   | (Note      3) |
|                                      |

|     (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.                                                                                                                              |   |   |   |

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