Colorado Interstate Gas Company

First Revised Volume No. 1

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

Eighth Revised Sheet No. 13B Eighth Revised Sheet No. 13B

Superseding: Seventh Revised Sheet No. 13B

STATEMENT OF RATES FOR TRANSPORTATION/STORAGE OF NATURAL GAS

FOOTNOTES

(Continued)

(12) Rate(s) for Rate Schedules NNT-1, NNT-2, FS-1, and IS-1 shall be

adjusted effective the first of the Month, the Month following the date

when a new currently effective CIG Mainline Storage Average Thermal

Content of Gas in Storage is posted on Transporter's electronic bulletin

board and on Transporter's Web site under Informational Postings, as

provided in Section 1 of the General Terms and Conditions of this

Tariff. Such adjustment shall be made by multiplying the fraction

[(1,000) over (new effective ATC in Btu which is currently 1040)] times

Shipper's Base Rate(s). For purposes of this note Shipper's "Base

Rate(s)" shall be Shipper's rate(s) as calculated based on an Average

Thermal Content of Gas in Storage of 1,000 Btu per cubic foot.

Rate(s) for Rate Schedules TSB-Y, FS-Y and IS-Y shall be adjusted

effective the first of the Month, the Month following the date when a

new currently effective Young Average Thermal Content of Gas in Storage

is posted on Transporter's electronic bulletin board and on

Transporter's Web site under Informational Postings, as provided in

Section 1 of the General Terms and Conditions of this Tariff. Such

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

effective ATC in Btu which is currently 1065)] times Shipper's Base

Rate(s). For purposes of this note Shipper's "Base Rate(s)" shall be

Shipper's rate(s) as calculated based on an Average Thermal Content of

Gas in Storage of 1,000 Btu per cubic foot.

Transporter shall also adjust the rate and entitlements for

Transportation between the Point of Withdrawal and Point of Delivery

under Rate Schedules NNT-1 and NNT-2 to the extent capacity is

available.

Rate(s) for Rate Schedules TSB-T, FS-T and IS-T shall be adjusted

effective the first of the Month, the Month following the date when a

new currently effective Totem Average Thermal Content of Gas in Storage

is posted on Transporter's electronic bulletin board and on

Transporter's Web site under Informational Postings, as provided in

Section 1 of the General Terms and Conditions of this Tariff. Such

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

effective ATC in Btu which is currently 1,000)] times Shipper's Base

Rate(s). For purposes of this note Shipper's "Base Rate(s)" shall be

Shipper's rate(s) as calculated based on an Average Thermal Content of

Gas in Storage of 1,000 Btu per cubic foot.