TransColorado Gas Transmission Company

Original Volume No. 1

Effective Date: 05/15/2000, Docket: GT00- 25-000, Status: Effective

Second Revised Sheet No. 249 Second Revised Sheet No. 249 : Superseded

Superseding: First Revised Sheet No. 249

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.