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

First Revised Sheet No. 509 First Revised Sheet No. 509 : Effective

Superseding: Original Sheet No. 509

APPENDIX

ELECTRONIC DATA INTERCHANGE TRADING PARTNER AGREEMENT

DATE: __________________________

TO BE EFFECTIVE: ___________________________ (DATE)

Company Name: Southern Star Central Gas Pipeline, Inc.

P.O. Box 20010

Street Address: 4700 Highway 56

City: Owensboro

State/Province/Commonwealth: KY

Zip/Postal Code: 42301

Attention (Name/Title): ________________________________________________

Contact Phone: ____________________ Fax: ______________________

Other Notice Method

and Address: ________________________________________________

________________________________________________

EDI Trading Partner

Company Name: ________________________________________________

________________________________________________

Street Address: ________________________________________________

City: _____________ State/Province/Commonwealth: _____

Zip/Postal Code: _______________

Attention (Name/Title): ________________________________________________

Contact Phone: ________________________ Fax: __________________

Other Notice Method

and Address: ________________________________________________

________________________________________________

Allocation of Costs:

Sender: Pays all costs to get its data to the receiving party’s

receipt computer.

Receiver: Pays all costs to retrieve the data.