Southern Natural Gas Company

Seventh Revised Volume No. 1

Effective Date: 11/01/2007, Docket: RP08- 52-000, Status: Effective

Third Revised Sheet No. 238 Third Revised Sheet No. 238 : Effective

Superseding: Second Revised Sheet No. 238

GENERAL TERMS AND CONDITIONS

(Continued)

APPENDIX D

Agreement No. ___________

PRO FORMA

FORM OF SUPPLY POOL

BALANCING AGREEMENT

THIS AGREEMENT, made and entered into as of this _____ day of __________,

_______ , by and between Southern Natural Gas Company, a Delaware general partnership,

hereinafter referred to as "Company", and ___________________, a ____________

corporation, hereinafter referred to as "Seller",

WITNESSETH

WHEREAS, Company, an interstate pipeline as defined in Section 2(15) of the

Natural Gas Policy Act of 1978 ("NGPA"), performs transportation services pursuant to

Part 284 of the Regulations of the Federal Energy Regulatory Commission

("Commission"); and

WHEREAS, Seller has requested the ability under Company's FERC Gas Tariff

to sell gas supply from an aggregate of Receipt Points on Company's system ("Supply

Pool") pursuant to Article 7 of one or more Service Agreements under Rate Schedule

FT, Rate Schedule FT-NN and/or Rate Schedule IT or under the terms and conditions

of another Supply Pool Balancing Agreement ("Service Agreements"); and/or

WHEREAS, Seller has agreed to provide title transfer tracking ("TTT") services on

behalf of shippers transporting gas on Company's interstate pipeline system; and

WHEREAS, Company is agreeable to such arrangement(s) in accordance with

the terms and conditions of this Agreement as well as the subject Service Agreements,

and any applicable Commission Regulations under the NGPA or Natural Gas Act.

NOW, THEREFORE, the parties hereto agree as follows: