Southern Natural Gas Company

Seventh Revised Volume No. 1

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Effective Date: 03/01/2005, Docket: RP04-523-000, Status: Effective

Fifth Revised Sheet No. 71 Fifth Revised Sheet No. 71 : Effective

Superseding: Fourth Revised Sheet No. 71

RATE SCHEDULE CSS

Contract Storage Service

(Continued)

(i) Deliverability Charge: The applicable rate set forth on the currently

effective Sheet Nos. 20 or 31 multiplied by SHIPPER'S initial Maximum

Daily Withdrawal Quantity multiplied by the systemwide Btu factor set

forth in Section 12.1 of the General Terms and Conditions.

(ii) Capacity Charge: The applicable rate set forth on the currently

effective Sheet Nos. 20 or 31 multiplied by SHIPPER'S Maximum Storage

Quantity multiplied by the systemwide Btu factor set forth in Section

12.1 of the General Terms and Conditions.

(iii)Injection Charge: The applicable rate set forth on the currently

effective Sheet Nos. 20 or 31 multiplied by the aggregate quantities of

gas injected for SHIPPER'S account pursuant to the nomination

procedures contained in Section 5 of this Rate Schedule on each day

during the month.

(iv) Withdrawal Charge: The applicable rate set forth on the currently

effective Sheet Nos. 20 or 31 multiplied by the aggregate quantities

of gas withdrawn for SHIPPER'S account pursuant to the nomination

procedures contained in Section 6 of this Rate Schedule on each day

during the month.

Each SHIPPER who has elected to pay the Small Shipper Charge for

transportation under Rate Schedules FT and/or FT-NN shall pay

COMPANY for the storage services rendered for SHIPPER each month

under this Rate Schedule the sum of the foregoing charges applicable

specifically to such group of SHIPPERS as set forth on currently effective

Sheet Nos. 20 or 31.

(b) In addition to the charges specified above, SHIPPER shall pay to

COMPANY as a fuel charge for performing storage services hereunder

(1) a percentage of the daily quantity of gas injected for SHIPPER'S

account and (2) a percentage of the daily quantity of gas withdrawn for

SHIPPER'S account. The percentage of the quantity of gas to be retained

by COMPANY on injection and withdrawal shall be set forth on the

currently effective Sheet Nos. 20 or 31 and shall be made effective

only at the beginning of a month.

(c) The rates which are stated on the currently effective Sheet Nos. 20 or 31

are the maximum rates applicable to the service provided under this Rate