Southern Natural Gas Company

Seventh Revised Volume No. 1

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Effective Date: 01/01/2001, Docket: RP00-514-000, Status: Effective

Third Revised Sheet No. 88 Third Revised Sheet No. 88 : Effective

Superseding: Second Revised Sheet No. 88

RATE SCHEDULE ISS

Interruptible Storage Service

(Continued)

(e) An account of SHIPPER'S current Storage Inventory will be provided on a

monthly basis on SHIPPER'S bill and an estimated Storage Inventory

utilizing SHIPPER'S daily nominations will be made available on a daily

basis on SoNet as soon as such information is available for posting.

6. WITHDRAWAL PROCEDURES

(a) SHIPPER, or its agent designated in an executed agency agreement, shall

nominate gas for withdrawal under this Rate Schedule by notifying

COMPANY of the daily quantity of gas expressed in Dth it desires to

withdraw from Storage pursuant to the nomination procedures set forth in

Section 12 of the General Terms and Conditions by designating receipts

from storage under SHIPPER'S transportation agreement or a third party's

transportation agreement. In the event the nomination for withdrawal from

Storage for SHIPPER'S account is made by a third party shipper under its

own transportation agreement pursuant to the requirements of Section 12

of the General Terms and Conditions, the third-party shipper's transportation

nomination must designate receipts from SHIPPER'S applicable Storage contract

account number.

(b) SHIPPER and COMPANY may establish uniform nominations of daily

quantities of gas to be withdrawn for SHIPPER'S account under this Rate

Schedule, subject to changes in the accompanying transportation nominations

on behalf of SHIPPER. If a uniform nomination is established, SHIPPER shall

not be required to nominate, or cause to be nominated, withdrawals of gas on

a daily basis until it desires to effect a change in the nominations

scheduled by COMPANY for withdrawal. Notice of a changed nomination shall

be given in accordance with Section 6(a) of this Rate Schedule.

(c) After receiving notice of the nominations requested, or caused to be

requested, by SHIPPER, COMPANY shall advise SHIPPER of the quantities

of gas it will withdraw from Storage for SHIPPER'S account not less than

one (1) hour prior to the effective time for which the nominations have

been made. Nominated quantities shall be scheduled in accordance with

the priorities established in