Transcontinental Gas Pipe Line Company, LLC

Fourth Revised Volume No. 1

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Effective Date: 01/04/2010, Docket: RP10-220-000, Status: Effective

First Revised Sheet No. 3 First Revised Sheet No. 3

Superseding: Original Sheet No. 3

TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC

FOURTH REVISED VOLUME NO. 1

TABLE OF CONTENTS

Contents of First Revised Volume No. 2 Sheet No.

Table of Contents 1

Applicability of Curtailment Rules 2

Special Rate Schedules:

X-38 Valero Interstate Transmission Company (Formerly South Texas

Natural Gas Gathering Company), Exchange and Delivery 3

X-40 National Fuel Gas Supply Corporation (Formerly United Natural

Gas Company), Exchange 7

X-49 Consolidated Gas Supply Corporation, Exchange 11

X-57 North Penn Gas Company, Exchange 14

X-70 Mid Louisiana Gas Company, Exchange 18

X-122 Mid Louisiana Gas Company, Compression 22

X-123 Sea Robin Pipeline Company, Exchange 32

X-143 ANR Pipeline Company (Formerly Michigan Wisconsin Pipe Line

Company), Exchange 36

X-224 Penn Fuel Gas, Inc., National Gas Storage Corporation,

National Fuel Gas Supply Corporation, Union Gas Company,

Transportation 56

X-227 Delmarva Power & Light Company,

National Fuel Gas Supply Corporation,

National Gas Storage Corporation, Transportation 64

X-234 Columbia Gas Transmission Corporation, Exchange 72

X-236 Mid Louisiana Gas Company, Exchange and Transportation 85

X-256 Conoco Inc., Transportation 103

X-261 Amarex, Inc., Transportation 123

X-269 Elizabethtown Gas Company,

Consolidated Gas Transmission Corporation, Transportation 137

X-270 Elizabethtown Gas Company,

National Fuel Gas Supply Corporation, Transportation 159

X-274 Public Service Electric & Gas Company,

Consolidated Gas Transmission Corporation, Transportation 181

X-275 Public Service Electric & Gas Company,

National Fuel Gas Supply Corporation, Transportation 204

X-276 Elizabethtown Gas Company,

National Fuel Gas Supply Corporation, Transportation 227