Colorado Interstate Gas Company

First Revised Volume No. 1

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

Sixth Revised Sheet No. 86A Sixth Revised Sheet No. 86A

Superseding: Fifth Revised Sheet No. 86A

RATE SCHEDULE TSB-Y

TRANSPORTATION - YOUNG STORAGE BALANCING SERVICE - FIRM

(Continued)

4. OVERRUN TRANSPORTATION

4.1 Daily Authorized Delivery Overrun. On any Day, upon request of

Shipper and with Transporter's consent, Shipper may take Deliveries

of quantities of Gas in excess of Shipper's MDQ as limited by

Shipper's YADWQ at each Point of 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 and accepted by Shipper at each Point(s) of Delivery

during the Month by the Daily Authorized Delivery Overrun Rate.

4.2 Daily Authorized Overrun Charges for Storage. On any Day, upon

request of Shipper, subject to the provisions of the Agreement,

including, but not limited to, the duty of Shipper not to exceed the

Young Reservoir Integrity Inventory Limit, Transporter may accept or

Deliver, on an interruptible basis, quantities in excess of

Shipper's YADIQ, YADWQ or YMAC and Shipper shall pay for such

overrun service as follows:

(a) Daily Authorized Injection Overruns. An amount obtained by

multiplying the quantity injected into storage on any Day which

is in excess of Shipper's YADIQ by the Daily Authorized

Injection/Withdrawal Overrun Rate. The Daily Authorized

Injection/Withdrawal Overrun Rate shall be the applicable

maximum rate unless otherwise agreed to by Transporter and

Shipper and shall not be less than the applicable minimum rate

or more than the applicable maximum rate as set forth on the

Statement of Rates.

(b) Daily Authorized Withdrawal Overruns. An amount obtained by