Transcontinental Gas Pipe Line Company, LLC

Fourth Revised Volume No. 1

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Effective Date: 10/01/2009, Docket: RP09-918-000, Status: Effective

Second Revised Sheet No. 90 Second Revised Sheet No. 90

Superseding: First Revised Sheet No. 90

INTERRUPTIBLE TRANSPORTATION SERVICE RATES

APPLICABLE TO TRANSPORTATION RENDERED PURSUANT TO

RATE SCHEDULE IDLS AND PART 284 OF THE REGULATIONS OF FERC

Maximum Minimum

Daily Daily

Delivery Lateral Rate Rate

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

($) ($)

Rate per dt

Fuel Retention Percentage

Note:

1/ Pursuant to Section 27 of the General Terms and Conditions, the above charges shall be

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