Colorado Interstate Gas Company

First Revised Volume No. 1

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

First Revised Sheet No. 38E First Revised Sheet No. 38E

Superseding: Original Sheet No. 38E

RATE SCHEDULE TF-4

TRANSPORTATION SERVICE - FIRM

(Continued)

4. OVERRUN TRANSPORTATION

4.1 Daily Authorized Overrun. On any Day, upon request of Shipper and at

Transporter's option, Shipper may Tender and Transporter may accept

quantities in excess of Shipper's MDQ or Shipper's Point of Receipt

or Delivery Quantities at each Point of Receipt or Delivery. All

such quantities shall be transported as authorized overrun Gas and

shall be transported on an interruptible basis. Shipper shall pay an

amount obtained by multiplying the quantity of such overrun Gas

Delivered by Transporter to Shipper, or for Shipper's account at

each Point(s) of Delivery during the Month by the Daily Authorized

Overrun rate.

4.2 Hourly Authorized Overrun. On any Day, upon request of Shipper and

with Transporter's consent, Shipper may take Hourly Deliveries of

Gas in excess of 1/24th of Shipper's MDQ under this rate schedule.

Such quantities shall be Tendered at an agreed upon level at

Point(s) of Delivery Rates of Flow as stated in Section 2.3 of this

rate schedule. All such quantities shall be Transported as

Authorized Hourly Overrun Gas on an interruptible basis. Shipper

shall pay an amount obtained by multiplying the largest quantity of

such Hourly Authorized Overrun Gas during any one Hour of a Day

times 24, times the Hourly Authorized Overrun Rate. The Hourly

Authorized Overrun Rate shall be the applicable maximum rate unless

otherwise agreed to by Transporter and Shipper. Such agreed upon

rate shall not be less than the applicable minimum rate or more than

the applicable maximum rate as set forth on the Statement of Rates.