East Tennessee Natural Gas Company

Second Revised Volume No. 1

Effective Date: 06/01/1997, Docket: RP97- 58-003, Status: Effective

Original Sheet No. 300 Original Sheet No. 300 : Superseded

APPENDIX (Page 4)

ELECTRONIC DATA INTERCHANGE TRADING PARTNER AGREEMENT

DATE________________________

TO BE EFFECTIVE____________________(DATE)

[Applies across all transaction set types]

2. STANDARDS: 18 C.F.R. 284.10, as approved by FERC, and as changed by FERC, from time

to time, and Tennessee Gas Pipeline Companies EDI implementation guides, as those may

be changed from time to time.

3. INDUSTRY GUIDELINES: ANSI ASC X12

4. FILE ENCYRPTION PROCEDURES FOR INTERNET ELECTRONIC DELIVERY MECHANISMS (EDM):

a) Contact for public key exchange (emergency and scheduled):

____________________________________________________________________________________

b) Method of contact and related information such as phone number and/or e-mail

address:

____________________________________________________________________________________

c) Chosen method of key exchange (examples: public encryption keys must be communicated

in electronic form):

____________________________________________________________________________________

d) Scheduled public key exchange procedures (if any; also, please include frequency):

____________________________________________________________________________________

e) Emergency public key exchange procedures:

____________________________________________________________________________________

f) Verification procedures to confirm appropriate exchange of public keys:

____________________________________________________________________________________

5. TERMS AND CONDITIONS: It is agreed that both parties will conduct a mutual EDI test of

the transmission of data by utilizing test documents and a test site ("Test") before

implementing transmission of actual processing in the production environment

("Production"). Test of Trading Partners EDI transfers should include data that should

be as reflective of the data which will actually be sent by the Trading Partner in the

Production. No actual production of documents will be transmitted until notification of

the Trading Partner by Pipeline that successful testing has been achieved under

Pipeline's requirements.

6. DATA RETENTION: (If no special data retention procedures have been agreed upon, enter

"None".)

_______________________________________________________________________________________