Member Companies Aka Energy Group, LLC Anadarko Petroleum Anadarko Petroleum / Fort Union Gas...

Wyoming Pipeline AssociationMember Companies

Aka Energy Group, LLC

Anadarko Petroleum

Anadarko Petroleum / Fort Union Gas Gathering

Anadarko Petroleum / MGTC, Inc.

Anadarko Petroleum / MIGC

Anadarko Petroleum / Mountain Gas Resources, Inc,

Belle Fourche Pipeline Company

Wyoming Pipeline Association

Member Companies

Bridger Pipeline LLC

Butte Pipe Line Company

Chevron Pipe Line Company

Cheyenne Light, Fuel & Power

ConocoPhillips Pipe Line Company

ConocoPhillips Pipe Line Company / Pioneer Pipe Line

DCP Midstream, LLC

Wyoming Pipeline Association

Member Companies

Devon Energy Production Company LP

El Paso Corporation / Colorado Interstate Gas Company

EnCana Oil & Gas (USA) Inc.

Energy West

Enterprise Products Partners L.P. / Jonah Gas Gathering

Enterprise NGL Pipelines, LLC / Mid-America Pipeline LLC ExxonMobil Production Company

Wyoming Pipeline AssociationMember Companies

FMC Corporation

Kern River Gas Transmission Company

Kinder Morgan Interstate Gas Transmission

Kinder Morgan Pipelines (USA) Inc. / Express Pipeline LLC

Kinder Morgan Pipelines (USA) Inc. / Platte Pipe Line

Linde LLC

Lost Creek Gathering LLC

Wyoming Pipeline Association

Member Companies

Marathon Pipe Line LLC

Merit Energy Company

MDU Resources / Montana Dakota Utilities Company

MDU Resources / Williston Basin Interstate Pipeline Natural Gas Processing Co. / N.G. Transmission

Natural Gas Processing Co. / Wyoming Gas Company

NuStar Logistics, LP

Wyoming Pipeline Association

Member Companies

ONEOK NGL Pipeline, L.L.C.

ONEOK Partners L.P. / Bear Paw Energy, LLC

Pinedale Natural Gas, Inc.

Plains All American Pipeline, L.P. / Frontier Pipeline

Plains All American Pipeline, L.P. / Plains Pipeline

QEP Resources

Questar Gas Company

Wyoming Pipeline Association

Member Companies

Questar Pipeline Company

Rockies Express Pipeline LLC

Sinclair Pipeline Company

St. Mary’s Land & Exploration Co.

SourceGas LLC Distribution

SourceGas LLC Transmission

Southern Star Central Gas Pipeline

Wyoming Pipeline Association

Member Companies

Suncor Energy (U.S.A.) Pipeline Company

Thundercreek Gas Services, LLC

Walden Gas

Whiting Oil and Gas Corporation

Williams

Williams / Northwest Pipeline

Wyoming Pipeline Association

Member Companies

Wyoming Refining

Xcel Energy