| Government Agencies |
| U.S. Department of Energy |
| U.S. Department of State |
| U.S. Department of Treasury |
| U.S. Environmental Protection Agency |
| National Renewable Energy Laboratory |
| Ozone Transport Assessment Group |
| California Energy Commission |
| Arizona Department of Environmental Quality |
| Maine Department of Environmental Quality |
| Canadian Council of Ministers of the Environment |
| Environment Canada |
| BC Ministry of Environment, Land, and Parks |
| The World Bank |
|
| Industry Associations |
| Alliance of Automobile Manufacturers |
| American Petroleum Institute |
| Association of International Automobile Manufacturers |
| Engine Manufacturers Association |
| National Petrochemical and Refiners Association |
| Oxygenated Fuels Association |
| Western States Petroleum Association |
|
| Manufacturing Companies |
| American Honda Motors |
| Cargill |
| Equistar |
| Ford Motor Company |
| Grace Davison |
| Lyondell |
|
|
|
| Professional Services Firms |
| Abt Associates, Inc. |
| AIR, Inc. |
| Cambridge Energy Research Assoc. |
| Comcept Canada, Inc. |
| Global Insight, Inc. |
| Energy & Environmental Analysis, Inc. |
| John Levin & Company |
| Kilborn SNC-Lavalin |
| KPMG |
| Riverstone Partners |
|
| Law Firms |
| Arnold & Porter |
| Kirby McInerney LLP |
| Latham & Watkins |
| Rudnick & Wolfe |
| Van Ness Feldman |
|
| Oil Refining Companies |
| Amoco |
| ARCO Products |
| BP North America |
| ChevronTexaco |
| ExxonMobil |
| Hunt Oil |
| Irving Oil Company |
| Sunoco Inc. |
| Tosco |
|
|
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