Colorado Interstate Gas Company

First Revised Volume No. 1

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

Sixth Revised Sheet No. 341 Sixth Revised Sheet No. 341

Superseding: Fifth Revised Sheet No. 341

GENERAL TERMS AND CONDITIONS

(Continued)

(d) Bid Evaluation Methods. All bids received will be evaluated

pursuant to one of the following methods:

(i) Present Valuation Calculation. Releasing Shipper may

elect to have all bids evaluated and ranked pursuant to

a Present Value Calculation, as follows:

1 - (1 + i)^-n

R x ----------- x V = present value

i

where: i = interest rate. Transporter's return on equity in

its currently effective rates

n = term of the release

R = the Reservation Rate(s) bid (and the storage

capacity rate bid for releases under Rate

Schedules FS-1, TSB-Y, TSB-T, FS-Y and FS-T)

V = Quantity stated in Dth

(ii) Highest Rate. Releasing Shipper may elect to have bids

evaluated on the basis of the highest Reservation

Rate(s) bid;

(iii) Net Revenue. Releasing Shipper may elect to have bids

evaluated on the basis of the total Reservation

Rate-based revenues received over the term of the

release;