Transcolorado Gas Transmission Company LLC

Second Revised Volume No. 1

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

Original Sheet No. 410 Original Sheet No. 410 : Effective

TRADING PARTNER AGREEMENT

for the Electronic Data Interchange

of Information Over the Public Internet

Section 1. Prerequisites. (Continued)

1.1. Document Standards. Each party may electronically transmit to or

receive from the other party any of the transaction sets listed in the

Exhibit(s) of the Appendix, and transaction sets which the parties by written

agreement add to the Appendix (collectively "Documents"). Any transmission of

data which is not a Document shall have no force or effect between the

parties. All Documents shall be transmitted in accordance with the North

American Energy Standards Board ("NAESB") standards and the published industry

guidelines as adopted by the Federal Energy Regulatory Commission ("FERC") or

its successor agency ("Standards"), or as may be agreed upon by the parties as

set forth in the Appendix.

1.2. Third Party Service Providers.

1.2.1. Documents will be transmitted electronically to each party

as specified in the Appendix either directly or through a third party service

provider ("Provider") with which either party may contract. Either party may

modify its election to use, not use or change a Provider upon 30 days prior

written notice to the other party.

1.2.2. Each party shall be responsible for the costs, acts and

omissions of any Provider with which it contracts. This provision does not

limit any claim of either party against a Provider with respect to such acts

or omissions.

1.3. System Operations. Each party, in its sole discretion and at its

own expense, shall provide for the requisite hardware, software, services

and/or testing procedures necessary to transmit, receive and retrieve

Documents.