Transcontinental Gas Pipe Line Company, LLC

Fourth Revised Volume No. 1

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

Fifth Revised Sheet No. 49 Fifth Revised Sheet No. 49

Superseding: Fourth Revised Sheet No. 49

FIRM TRANSPORTATION SERVICE RATES

UNDER RATE SCHEDULE FT APPLICABLE TO

SUNDANCE EXPANSION PROJECT

FIRM TRANSPORTATION SERVICE

Incremental Sundance Annual Firm Transportation

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

Commodity Rate per dt

Elec.

Power Max. Min.

Base Unit Rate Rate

Receipt & Delivery Zone Rate Rate 1/ 2/ 1/ 2/

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

($) ($) ($) ($)

3-3 0.00016 0.00075 0.00091 0.00091

3-3 (WSS-Open Access Wth) 0.00016 0.00000 0.00016 0.00016

3-4, 4-3 0.00016 0.00401 0.00417 0.00417

3-5, 5-3 0.00016 0.00657 0.00673 0.00673

4-4 0.00016 0.00326 0.00342 0.00342

4-5, 5-4 0.00016 0.00582 0.00598 0.00598

5-5 0.00016 0.00256 0.00272 0.00272

Notes:

1/ The Base Rate plus the Electric Power unit rate.

2/ Pursuant to Section 27 of the General Terms and Conditions, the Commodity Rate shall be

increased to include the ACA unit rate of $0.00190, if applicable.