TransColorado Gas Transmission Company

Original Volume No. 1

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

First Revised Sheet No. 419 First Revised Sheet No. 419 : Superseded

Superseding: Original Sheet No. 419

APPENDIX

ELECTRONIC DATA INTERCHANGE TRADING PARTNER AGREEMENT

between ______________________________

and _________________________________________________

DATE ____________

TO BE EFFECTIVE ____________ (DATE)

RECEIPT COMPUTER:

COMPANY NAME: ______________________________________________

INTERNET ADDRESS (URL) ________________________________________

ISA QUALIFIER ______________________________________________

ISA ID ______________________________________________

FOR PUBLIC KEY CHANGES OR EMERGENCY KEY VERIFICATION:

CONTACT NAME: ______________________________________________

E-MAIL ADDRESS: ______________________________________________

PHONE NUMBER: ______________________________________________

COMPANY NAME: ______________________________________________

INTERNET ADDRESS (URL) ________________________________________

ISA QUALIFIER ______________________________________________

ISA ID ______________________________________________

FOR PUBLIC KEY CHANGES OR EMERGENCY KEY VERIFICATION:

CONTACT NAME: ______________________________________________

E-MAIL ADDRESS: ______________________________________________

PHONE NUMBER: ______________________________________________

2. STANDARDS: ______________________________________________

3. INDUSTRY GUIDELINE: _______________________________________

The mutually agreed provisions of this Exhibit shall control in the event

of any conflict with any listed industry guidelines.

4. SECURITY PROCEDURES: ______________________________________

5. TERMS AND CONDITIONS:______________________________________

6. DATA RETENTION: _______________________________________

7. REFERENCED AGREEMENTS: ____________________________________

8. LIMITATION ON DIRECT DAMAGES: _____________________________

9. CONFIDENTIAL INFORMATION: _________________________________