Transwestern Pipeline Company, LLC

Third Revised Volume No. 1

Effective Date: 10/23/2006, Docket: RP06-604-000, Status: Effective

First Revised Sheet No. 114 First Revised Sheet No. 114 : Effective

Superseding: Original Sheet No. 114

GENERAL TERMS AND CONDITIONS

(continued)

7.4 Errors in Billing

No prior period adjustment (PPAs) shall be made unless the request for the

adjustment is made within six (6) months of the production month. There will

be a three (3) month rebuttal period. This time limitation shall not apply in

the case of deliberate omission or misrepresentation or mutual mistake of

fact, or to rate changes required by governmental authorities having

jurisdiction. Parties' other statutory or contractual rights shall not

otherwise be diminished by this provision.

Interest computed at the same rate and in the same manner as prescribed for

pipeline refunds as set forth in Section 154.501(d) of the Commission's

Regulations under the Natural Gas Act shall be included in adjusting errors

resulting in excessive billings to Shipper, provided such errors are not

occasioned by mutual misinterpretation by both Shipper and Transporter of

quantities or other billing information.