Southern Star Central Gas Pipeline, Inc.

Original Volume No. 1

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Effective Date: 03/01/2006, Docket: RP06-188-000, Status: Effective

Second Revised Sheet No. 510 Second Revised Sheet No. 510 : Effective

Superseding: First Revised Sheet No. 510

APPENDIX

ELECTRONIC DATA INTERCHANGE TRADING PARTNER AGREEMENT

DATE: __________________________

TO BE EFFECTIVE: ___________________________ (DATE)

Receipt Computer/Designated Site Information*

Company Name: Southern Star Central Gas Pipeline, Inc.

Primary Receipt Computer/

Designated Site URL: HTTP://EDI.SSCGP.COM/CGI-BIN/ICSCGI.EXE

Test Receipt Computer/

Designated Site URL: HTTP://EDI.SSCGP.COM/CGI-BIN/ICSCGI.EXE

ISA Qualifier: ________________ ISA Id: ____________________

PGP Public Key Contact: System Security Administrator

PGP Contact Phone: (270) 852-4376 Fax: (270) 852-5016

EDI Trading Partner

Company Name: _____________________________________________

Primary Receipt Computer/

Designated Site URL: _____________________________________________

Test Receipt Computer/

Designated Site URL: _____________________________________________

ISA Qualifier: ___________________ ISA Id: _________________

PGP Public Key Contact: _____________________________________________

PGP Contact Phone: ___________________ Fax: ____________________

* This section may be the Appendix or in each Exhibit, but must be in one

or the other place.