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. 175 Eighth Revised Sheet No. 175

Superseding: Seventh Revised Sheet No. 175

RATE SCHEDULE SS-1

Interruptible Swing Service

(Continued)

(c) For Sections 4.2 (a) and (b) above, Transporter shall notify

Operator by telephone, and then by facsimile, e-mail, in

writing or on Transporter's Electronic Bulletin Board to reduce

the cumulative allocated balance as provided in this section

above. In the event a valid Nomination is submitted in response

to notification by Transporter to reduce the cumulative

allocated balance, Operator shall be deemed to have complied

with Transporter's notification for that Gas Day. Cumulative

allocated balances (i) for overdeliveries not removed pursuant

to this section, or by the end of the term of an Agreement,

shall become the property of Transporter at no cost to

Transporter free and clear of any adverse claims and (ii) for

underdeliveries not returned pursuant to this section or by the

end of the term of an Agreement shall be sold to Operator at

150% of Transporter's Cash Out System Index Price.

5. HOURLY UNAUTHORIZED OVERRUN

5.1 Hourly Unauthorized Overrun. Hourly Deliveries of Gas in excess of

the Hourly aggregate Scheduled Quantities, including Hourly

Entitlement Enhancement Nominations authorized under transportation

agreements Delivered to Points of Delivery designated in the Rate

Schedule SS-1 Agreement shall be subject to the Hourly Unauthorized

Overrun Rate. Operator 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.