Colorado Interstate Gas Company

First Revised Volume No. 1

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

Seventh Revised Sheet No. 70 Seventh Revised Sheet No. 70

Superseding: Sixth Revised Sheet No. 70

RATE SCHEDULE TF-HP

HIGH PLAINS TRANSPORTATION SERVICE - FIRM

(Continued)

4. OVERRUN TRANSPORTATION

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

Shipper and with Transporter's consent, Shipper may Tender and

Transporter may receive quantities in excess of Shipper's MDQ as

adjusted for 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 including the Point of Injection during the Month by the

Daily Authorized Overrun Rate. The Daily Authorized 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.

4.2 Daily Unauthorized Overrun Transportation. On any Day, Gas that

exceeds Shipper's entitlement at any Point of Receipt or Delivery

and which has not been authorized by Transporter is unauthorized and

shall be subject to the Daily Unauthorized Overrun Rate (non-

Critical or Critical Condition as applicable). Shipper shall pay an

amount obtained by multiplying the quantity of such Daily

Unauthorized Overrun Gas by the Daily Unauthorized Overrun Rate on

the Statement of Rates.

4.3 Hourly Unauthorized Overrun Transportation. Hourly Deliveries of Gas

in excess of 1/24th of the Scheduled Daily Quantity at Point(s) of

Delivery shall be subject to the Hourly Unauthorized Overrun Rate.

Shipper shall pay an amount obtained by multiplying the largest

quantity of such Hourly Unauthorized Overrun Gas during any one Hour

of a Day times 24, times the Hourly Unauthorized Overrun Rate on the

Statement of Rates.

4.4 Shipper shall pay only one Unauthorized Overrun charge when

Shipper's Hourly Unauthorized Overruns result in a Daily

Unauthorized Overrun. Shipper shall pay the higher of the Daily

Unauthorized Overrun amount at that point calculated pursuant to

Section 4.2 above, or the Hourly Unauthorized Overrun amount at that

point calculated pursuant to Section 4.3 above.