Southern Natural Gas Company

Seventh Revised Volume No. 1

Effective Date: 08/01/1999, Docket: RP99-419-000, Status: Effective

First Revised Sheet No. 129A First Revised Sheet No. 129A : Effective

Superseding: Original Sheet No. 129A

GENERAL TERMS AND CONDITIONS

(Continued)

12.4 (Continued)

When a Confirmation Requester receives a Confirmation Response document

from a Confirming Party by the conclusion of a given quarter hour period,

the Confirmation Requester will send to the Confirming Party's designated

site a corresponding Confirmation Response Quick Response document by

the conclusion of the subsequent quarter hour period. A given quarter

hour will contain all transactions which receipt time is less than the

beginning of the subsequent quarter hour.

or other agreement is not in place between Confirming Parties and

COMPANY is unable to obtain a response to a Request for Confirmation

or an unsolicited Confirmation Response, then the following

confirmation procedures shall apply:

(i) With respect to the timely nomination/confirmation process,

the lesser of the confirmation quantity or the previously

scheduled quantity shall be the new confirmed quantity; or

(ii) With respect to timely requests for increases during the

intraday nomination/confirmation process, the previously

scheduled quantity shall be the new confirmed quantity; or

(iii) With respect to timely requests for decreases during the

intraday nomination/confirmation process, the greater of the

confirmation quantity or the elapsed-prorated-scheduled

quantity shall be the new confirmed quantity; and

(iv) COMPANY shall provide the service requester with an explanation

why the nomination failed.