Transcolorado Gas Transmission Company LLC

Second Revised Volume No. 1

Effective Date: 12/28/2007, Docket: RP08-167-000, Status: Effective

Original Sheet No. 283 Original Sheet No. 283 : Effective

GENERAL TERMS AND CONDITIONS

13. BILLING AND PAYMENT (Continued)

guaranteeing refund to Shipper upon such bills after a final determination by

agreement, by determination of regulatory agencies having jurisdiction, or by

judgment of the courts, as may be the case. Payment of the disputed portion

shall not be deemed a waiver of the right to contest such disputed portion in

any forum having jurisdiction. Alternatively, shipper may, if invoice is in

dispute, pay portion not in dispute and provide documentation identifying

basis for dispute.

13.6 If it is determined that Shipper has been overcharged, and Shipper

has paid the statement containing the overcharge then, within 30 days after

the final determination, TransColorado shall refund the amount overcharged.

If it is determined that Shipper has been undercharged, Shipper shall pay the

amount undercharged with appropriate interest within 30 days of notice by

TransColorado of the amount. Prior period adjustment time limits should be

six months from the date of the initial transportation invoice with a three

month rebuttal period, excluding government-required rate changes. This

standard shall not apply in the case of deliberate omission or mutual mistake

of fact. Parties' other statutory or contractual rights shall not otherwise

be diminished by this standard.