Southern Natural Gas Company

Seventh Revised Volume No. 1

Effective Date: 03/01/2008, Docket: RP08-180-000, Status: Effective

Sixth Revised Sheet No. 51 Sixth Revised Sheet No. 51 : Effective

Superseding: Fifth Revised Sheet No. 51

RATE SCHEDULE FT-NN

Firm Transportation Service - No Notice

(Continued)

Section 3(a)(i)(continued)

damage and are inoperable, a credit shall apply under the terms hereof, except for the period

provided in subparagraph (C)(2) below, until such time that COMPANY's facilities are ready to

be placed back in service; or (2) such failure occurring within the earlier of (x) ten (10)

days following a force majeure event as set forth in Section 8.3 of the General Terms and

Conditions herein; or (y) the date COMPANY should have, in the exercise of due diligence,

overcome the force majeure event, if earlier than the period set forth above in (x); or (3)

COMPANY performing seasonal shut-in tests at COMPANY's storage fields where the Service

Agreement is under Rate Schedule FT-NN.

(ii) Transportation Charge: Except as provided in Section 3(a)(iii) below, the applicable rates set

forth on the currently effective Sheet Nos. 16-17 or 28-29 multiplied by the daily quantities of

gas delivered for SHIPPER'S account during the month up to SHIPPER'S Transportation Demand in

effect each day. This charge shall apply both to (A) deliveries made hereunder for injection

into a storage account under Rate Schedule CSS or ISS, with the delivery deemed to have been

made in the production area rate zone, and (B) the transportation of gas from said storage

account(s), with said withdrawal/receipt deemed to have occurred in rate zone 1. For

transportation of gas on a backhaul basis, a backhaul transportation charge, as shown on the

above referenced rate sheets shall apply. These transportation charges shall be applied to the

daily deliveries pursuant to the method set forth in Section 13.7 of the General Terms and

Conditions.

(iii) Downstream Delivery Charge: If gas is delivered for SHIPPER'S account to an Exhibit B-1

Delivery Point in a zone downstream of the zone of SHIPPER'S Exhibit B Delivery Points, SHIPPER

shall pay the sum of (A) the Transportation Charge on Sheet Nos. 16-17 or 28-29 to the zone of

SHIPPER'S Exhibit B Delivery Points and (B) the maximum Transportation Charge under Rate

Schedule IT from SHIPPER'S Exhibit B delivery zone to the zone of the downstream Delivery Point,

multiplied times the volumes delivered to the downstream Delivery Point within SHIPPER'S

Transportation Demand. These rates shall be applied to the daily deliveries pursuant to the

method set forth in Section 13.7 of the General Terms and Conditions.

(iv)No Notice Service: The applicable Injection and Withdrawal Charges under Rate Schedule CSS as set

forth on the currently effective Sheet Nos. 20 or 31 multiplied by the aggregate quantities of gas

injected or withdrawn for SHIPPER'S account hereunder during each day of the month plus the

percentage of the quantities of gas injected or withdrawn for SHIPPER'S account to be retained by

COMPANY as a fuel charge as set forth on currently effective Sheet Nos. 20 or 31.