Southern Natural Gas Company

Seventh Revised Volume No. 1

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Effective Date: 03/01/2010, Docket: RP09-427-003, Status: Effective

Thirty-Eighth Revised Sheet No. 30 Thirty-Eighth Revised Sheet No. 30

Superseding: Thirty-Seventh Revised Sheet No. 30

SETTLEMENT RATES 3/

Interruptible Transportation Service

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Transportation Charge 1/ 2/ DELIVERY ZONE

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Maximum/Maximum Including

Surcharges (Dth) Production

Receipt Zone Area Zone 1 Zone 2 Zone 3

Production Area 22.90¢/23.09¢ 25.70¢/25.89¢ 37.60¢/37.79¢ 48.60¢/48.79¢

Zone 1 22.90¢/23.09¢ 11.20¢/11.39¢ 23.10¢/23.29¢ 34.20¢/34.39¢

Zone 2 22.90¢/23.09¢ 11.20¢/11.39¢ 20.50¢/20.69¢ 31.60¢/31.79¢

Zone 3 22.90¢/23.09¢ 11.20¢/11.39¢ 20.50¢/20.69¢ 19.30¢/19.49¢

ANNUAL

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Minimum Rate (Dth) Production

Receipt Zone Area Zone 1 Zone 2 Zone 3

Production Area 4.10¢ 4.50¢ 5.80¢ 6.60¢

Zone 1 4.10¢ 2.90¢ 4.30¢ 5.10¢

Zone 2 4.10¢ 2.90¢ 3.90¢ 4.70¢

Zone 3 4.10¢ 2.90¢ 3.90¢ 3.40¢

Backhaul Transportation Charge (Dth) 1/ DELIVERY ZONE

Max/Max With Surcharges: Production

Receipt Zone Area Zone 1 Zone 2 Zone 3

Production Area 22.90¢/23.09¢ N/A N/A N/A

Zone 1 22.90¢/23.09¢ 11.20¢/11.39¢ N/A N/A

Zone 2 22.90¢/23.09¢ 11.20¢/11.39¢ 20.50¢/20.69¢ N/A

Zone 3 22.90¢/23.09¢ 11.20¢/11.39¢ 20.50¢/20.69¢ 19.30¢/19.49¢

Backhaul Transportation DELIVERY ZONE

Charge Minimum: Production

Receipt Zone Area Zone 1 Zone 2 Zone 3

Production Area 4.10¢ N/A N/A N/A

Zone 1 4.10¢ 2.90¢ N/A N/A

Zone 2 4.10¢ 2.90¢ 3.90¢ N/A

Zone 3 4.10¢ 2.90¢ 3.90¢ 3.40¢

Fuel Retention:

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Forward Haul Fuel,

Used & Unaccounted For 1.47% 1.47% 1.90% 2.22%

Intrazone Fuel,

Used & Unaccounted For 1.47% 0.50% 0.50% 0.50%

Backhaul Fuel,

Used & Unaccounted For 0.16% 0.16% 0.16% 0.16%

1/ Surcharge applicable to service under Rate Schedule IT and Supply Pool Balancing

Agreement.

Storage Cost Reconciliation

Mechanism Volumetric Surcharge: $ .000 applicable to each Dth transported.

2/ Surcharges applicable to service under Rate Schedule IT.

GRI Surcharge: $ .000 applicable to each Dth transported.

ACA Surcharge: $ .0019 applicable to each Dth transported.

3/ The foregoing rates have been established pursuant to the terms of the Settlement filed in Docket No.

RP09-427 applicable to all Supporting and Non-Opposing Parties as defined in the Settlement. Such

rates shall remain in effect until superseded by new rates placed into effect consistent with the

provisions of the Docket No. RP09-427 Settlement.