Colorado Interstate Gas Company

First Revised Volume No. 1

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

Eighteenth Revised Sheet No. 8 Eighteenth Revised Sheet No. 8

Superseding: Seventeenth Revised Sheet No. 8

STATEMENT OF RATES FOR TRANSPORTATION/STORAGE OF NATURAL GAS

(Continued)

Rates per Dth

(Note 1)

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Rate Schedule Minimum Maximum

------------- ------- -------

TSB-T: (Note 12)

Phase 2 - Reservation Rates

R1 Rate(Monthly Rate)(Note 6)...................... $0.0000 $16.0953

High Plains...................................... $0.0000 $4.1979

Storage Deliverability........................... $0.0000 $5.9487

Storage Capacity................................. $0.0000 $5.9487

Commodity Injection Rate............................. $0.0937 $0.0937

Commodity Delivery Rate.............................. $0.0949 $0.0949

Daily Authorized Delivery Overrun Rate .............. $0.0012 $0.1392

Daily Authorized Injection/Withdrawal Overrun Rate... $0.0937 $0.1956

Daily Authorized Storage Capacity Overrun Rate....... $0.0937 $0.1983

Daily Unauthorized Overrun Rate (Note 7) -

Greater of 100 Dth or 3% of MDQ, TMDIQ, TMDWQ or TMAC. $1.0584

Greater of 2,500 Dth or 5% of MDQ, TMDIQ, TMDWQ or TMAC

(Non-Critical Condition)..................... $2.6460

Greater of 2,500 Dth or 5% of MDQ, TMDIQ, TMDWQ or TMAC

(Critical Condition)......................... $5.2920