AEI Alliance Pipeline Limited Partnership Alyeska Pipeline Service Company ANR Pipeline Company
Bridgeline Holdings, L.P. British Pipeline Agency Ltd. Buckeye Pipe Line Company, L.P.
China Resources Gas Group Limited Colonial Pipeline Company Colorado Interstate Gas Company Columbia Gas Transmission Corp. Columbia Gulf Transmission Co. Companhia de Gás de São Paulo
Dominion Transmission, Inc.
E.ON Ruhrgas AG Enagás, S.A. Enbridge (U.S.) Inc. Enogex, Inc. ExxonMobil Pipeline Company
Florida Gas Transmission Company, LLC Fluxys SA Fort Chicago Energy Partners L.P.
Gas Transmission Northwest Corporation Gendis Inc. Great Lakes Gas Transmission Company Gulf South Pipeline Company, LP Gulfstream Natural Gas System, L.L.C.
Iroquois Gas Transmission System L.P. Iroquois Pipeline Operating Company
Jayhawk Pipeline, L.L.C.
Kinder Morgan Canada Inc.
Magellan Midstream Holdings, L.P.
N.V. Nederlandse Gasunie North Baja Pipeline LLC Northern Natural Gas Company Northwest Pipeline Corporation
Olympic Pipe Line Company
Panhandle Eastern Pipe Line Company, LP Panhandle Energy Plantation Pipe Line Company
Questar Pipeline Company
SemGroup, L.P. Shell Pipeline Company, LP Southern Natural Gas Company
Texas Gas Transmission, LLC Transcontinental Gas Pipe Line Corporation Transneft Transportadora Brasileira Gasoduto Bolívia-Brasil S.A.
U.S. Gas Transmission
Vector Pipeline L.P.
Williams Gas Pipeline, LLC Williston Basin Interstate Pipeline Company Wolverine Pipe Line Company
