Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

Effective Date: 09/03/2004, Docket: RP04-440-000, Status: Effective

First Revised Sheet No. 314 First Revised Sheet No. 314 : Effective

Superseding: Original Sheet No. 314

FORM OF SERVICE AGREEMENT

APPLICABLE TO ELECTRONIC DATA INTERFACE

APPENDIX A

ELECTRONIC DATA INTERCHANGE TRADING PARTNER AGREEMENT

(DATE) __________

TO BE EFFECTIVE __________ (DATE)

LIST OF EXHIBITS

EXHIBIT TRANSACTION NATURAL GAS DATE EXHIBIT

NUMBER SET NUMBER DOCUMENT ENTERED INTO

NAME

____________ _____________ ____________ ____________

All Exhibits attached hereto are to be considered attached to

the Appendix A and made a part thereof. Where there are any

provisions specified both in the Exhibits(s) and in the

Appendix A, those contained in the Exhibits(s) govern.

The undersigned do hereby execute this Appendix A, which

Appendix A is attached to and made a part of the above

referenced Trading Partner Agreement. By execution below the

parties hereby ratify said Agreement for all purposes set

forth in this Appendix A and the attached Exhibits(s).

COMPANY NAME: Gas Transmission COMPANY NAME:

Northwest Corporation

BY: _____________________________ BY: _______________________

PRINTED NAME: ___________________ PRINTED NAME: ____________

TITLE: __________________________ TITLE: ____________________

(Continued)