Transcontinental Gas Pipe Line Company, LLC

Fourth Revised Volume No. 1

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Effective Date: 04/01/2010, Docket: RP10-395-000, Status: Effective

Third Revised Sheet No. 48 Third Revised Sheet No. 48

Superseding: Second Revised Sheet No. 48

FIRM TRANSPORTATION SERVICE RATES

UNDER RATE SCHEDULE FT APPLICABLE TO

SUNDANCE EXPANSION PROJECT

FIRM TRANSPORTATION SERVICE

Incremental Sundance Annual Firm Transportation

-----------------------------------------------

Maximum Minimum

Daily Daily

Rate Rate

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($) ($)

Capacity rights commencing at Station 65:

Reservation Rate per dt - Zone 3-4:

Base Rate 0.23879 0.00000 1/

Electric Power Unit Rate 0.00136 0.00136

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Total Reservation Rate 0.24015 0.00136

Reservation Rate per dt - Zone 3-5:

Base Rate 0.23879 0.00000 1/

Electric Power Unit Rate 0.00213 0.00213

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Total Reservation Rate 0.24092 0.00213

Capacity rights commencing at Destin:

Reservation Rate per dt - Zone 4-4:

Base Rate 0.23879 0.00000 1/

Electric Power Unit Rate 0.00105 0.00105

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Total Reservation Rate 0.23984 0.00105

Reservation Rate per dt - Zone 4-5:

Base Rate 0.23879 0.00000 1/

Electric Power Unit Rate 0.00182 0.00182

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Total Reservation Rate 0.24061 0.00182

Firm transportation service for specified delivery

points on the North Georgia extension:

Reservation Rate per dt - Zone 4:

Base Rate 0.38772 0.00000 1/

Electric Power Unit Rate 0.00105 0.00105

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Total Reservation Rate 0.38877 0.00105

Note:

1/ The minimum reservation rate applicable to capacity release transactions that are not

permanent releases shall not be less than zero.