Colorado Interstate Gas Company

First Revised Volume No. 1

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

First Revised Sheet No. 162C First Revised Sheet No. 162C

Superseding: Original Sheet No. 162C

RATE SCHEDULE IS-1

STORAGE SERVICE - INTERRUPTIBLE

(Continued)

(b) Rate(s) shall be adjusted effective the first of the Month, the

Month following the date when a new currently effective Average

Thermal Content of Gas in Storage is posted on Transporter's

electronic bulletin board as provided in Section 1.2 of the

General Terms and Conditions of this Tariff. Such adjustment

shall be made by multiplying the fraction [(1,000) over (new

currently effective ATC in Btu)] times Shipper's rates as

listed in the Agreement.

3.5 Third Party Charges: Shipper may, on a non-discriminatory basis, be

required to pay to Transporter, if applicable, any Third Party

Charges in accordance with Section 4.3 of the General Terms and

Conditions. In no event shall such Third Party Charges paid by

Shipper exceed the amount incurred and paid by Transporter for the

applicable off-system capacity.

4. FUEL REIMBURSEMENT

4.1 Shipper shall furnish to Transporter the Fuel Reimbursement as

defined in Section 1 of the General Terms and Conditions. Quantities

of Gas Tendered under this Rate Schedule shall be adjusted for Fuel

Reimbursement attributed to Storage Service.