The following companies are subsidiares of Williams Companies: Alliance Canada Marketing L.P., Alliance Canada Marketing LTD, Appalachia Midstream Services L.L.C., Aux Sable Liquid Products Inc., Aux Sable Liquid Products LP, Aux Sable Midstream LLC, Bargath LLC, Black Marlin Pipeline LLC, Blue Racer Midstream LLC, Bluebonnet Market Express LLC, Bluestem Gas Services L.L.C., Bluestem Pipeline LLC, Brazos Permian II LLC, Caiman Energy II LLC, Caiman Ohio Midstream LLC, Carbon County UCG Inc., Carbonate Trend Pipeline LLC, Cardinal Gas Services L.L.C., Cardinal Operating Company LLC, Cardinal Pipeline Company LLC, Constitution Pipeline Company LLC, DMP New York Inc., Discovery Gas Transmission LLC, Discovery Producer Services LLC, Gulfstar One LLC, Gulfstream Management & Operating Services L.L.C., Gulfstream Natural Gas System L.L.C., HB Construction Company Ltd., Inland Ports Inc., Kiowa Lateral LLC, Laurel Mountain Midstream LLC, Laurel Mountain Midstream Operating LLC, Louisiana Midstream Gas Services L.L.C., Magnolia Midstream Gas Services L.L.C., Marsh Resources LLC, Mid-Continent Fractionation and Storage LLC, Mockingbird Midstream Gas Services L.L.C., Monarch Pipeline LLC, Nopal Gathering LLC, Northwest Pipeline LLC, Ohio Valley Midstream LLC, Oklahoma Midstream Gas Services L.L.C., Pacific Connector Gas Pipeline LP, Parachute Pipeline LLC, Pecan Hill Water Solutions, Pennant Midstream LLC, Permian Connector LLC, Pine Needle LNG Company LLC, Pine Needle Operating Company LLC, Ponder Midstream Gas Services L.L.C., Reserveco Inc., Rocky Mountain Midstream Holdings LLC, Rocky Mountain Midstream JV Holdings LLC, Rocky Mountain Midstream LLC, Rocky Mountain Midstream Marketing LLC, Rocky Mountain Midstream Pipeline LLC, Rocky Mountain Midstream Water LLC, TWC Holdings C.V., Texas Midstream Gas Services L.L.C., The Williams Companies Foundation Inc., The Williams Companies International Holdings B.V., Three Rivers Midstream LLC, TransCardinal Company LLC, TransCarolina LNG Company LLC, Transco Exploration Company, Transcontinental Gas Pipe Line Company LLC, UEOM NGL Pipelines LLC, Utica East Ohio Midstream L.L.C., Utica Gas Services L.L.C., WFS - Liquids LLC, WFS Gathering Company L.L.C., Wamsutter LLC, WilPro Energy Services (El Furrial) Limited, WilPro Energy Services (Pigap II) Limited, Williams ACM Holdings ULC, Williams Acquisition Holding Company LLC, Williams Alaska Petroleum Inc., Williams Bayou Ethane Pipeline LLC, Williams Blu Operating LLC, Williams CV Holdings LLC, Williams Compression L.L.C., Williams Energy Resources LLC, Williams Energy Solutions LLC, Williams Express Inc., Williams Express LLC, Williams Field Services - Gulf Coast Company LLC, Williams Field Services Company LLC, Williams Field Services Group LLC, Williams Flexible Generation LLC, Williams Gas Processing - Gulf Coast Company LLC, Williams Global Energy (Cayman) Limited, Williams Global Holdings LLC, Williams Gulf Coast Transportation Company LLC, Williams Headquarters Building LLC, Williams Holdings and Manufacturing LLC, Williams Hutch Rail Company LLC, Williams Information Technology LLC, Williams International Company LLC, Williams International El Furrial Limited, Williams International Pigap Limited, Williams International Venezuela Limited, Williams Laurel Mountain LLC, Williams MLP Operating L.L.C., Williams Midstream Gas Services L.L.C., Williams Mobile Bay Producer Services L.L.C., Williams Ohio River Valley Corporation, Williams Ohio River Valley LLC, Williams Ohio Valley Midstream LLC, Williams Ohio Valley Pipeline LLC, Williams Oil Gathering L.L.C., Williams Olefins Feedstock Pipelines L.L.C., Williams Olefins Pipeline Holdco LLC, Williams PERK LLC, Williams Pacific Connector Gas Operator LLC, Williams Partners Operating LLC, Williams Petroleum Services LLC, Williams Pipeline Services LLC, Williams Propylene Company LLC, Williams Resource Center L.L.C., Williams Rocky Mountain Midstream Holdings LLC, Williams Rocky Mountain Midstream Operating LLC, Williams Strategic Sourcing Company, and Williams WPC - I LLC.
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