Colorado Interstate Gas Company

First Revised Volume No. 1

Effective Date: 06/01/2010, Docket: RP10-689-000, Status: Effective

Tenth Revised Sheet No. 21 Tenth Revised Sheet No. 21

Superseding: Ninth Revised Sheet No. 21

RATE SCHEDULE TF-1

TRANSPORTATION SERVICE - FIRM

(Continued)

2.3 Rates of Flow. Unless otherwise agreed, at each Point of Receipt and

Point of Delivery, each Party shall use reasonable efforts to

Tender, or cause to be Tendered, Gas at reasonably uniform hourly

and Daily rates of flow as specified below.

(a) At each Point of Delivery, quantities Tendered, or caused to be

Tendered, for Shipper's account shall not exceed in any Hour

1/24th of Scheduled Quantities at such Point, subject to the

conditions of Section (b) below.

(b) In addition to the rates of flow specified in Section (a)

above, at Qualified Points of Delivery or at Shipper's NNT

Balancing Point(s), when applicable, quantities Tendered, or

caused to be Tendered, for Shipper's account, shall not exceed

in any Hour 1/24th of the Scheduled Quantities resulting from

Hourly Entitlement Enhancement Nominations. When applicable,

Shipper shall specify its requested Hourly flow pattern to

Transporter pursuant to the procedures specified in Section 6.5

of the General Terms and Conditions.

2.4 Shippers under this Rate Schedule TF-1 may participate in and shall

be subject to the Joint Monthly Operating Plan and Operational Flow

Orders of Section 11 and the Penalty Provisions as provided in

Section 14 of the General Terms and Conditions.

2.5 This service shall be subject to Section 9 pertaining to capacity

release, Section 8.1 pertaining to Segmentation and Section 10

pertaining to imbalance management of the General Terms and

Conditions.

3. TRANSPORTATION SERVICE CHARGES

3.1 Reservation Charge. Shipper shall be charged each Month a

reservation charge (R1) determined by multiplying the R1 Reservation

Rate set forth in the Agreement by Shipper's MDQ. Shipper's

liability for the reservation charge and surcharges shall begin to

accrue on the effective date set forth in the Agreement. A Shipper

may elect at any time to prepay the reservation charge and

surcharges under the Agreement.