Terra Group Clients, 1994 - 2009

Amoco (Ecuador and Venezuela)

Anadarko Petroleum Corporation (Brazil, Guatemala and Peru)

ARCO (Ecuador)

Baltimore Gas & Electric Company (U.S.)

BP Corporation (U.S. and Indonesia)

Burlington Resources International (Ecuador)

CAES Development Company L.L.C. (U.S.)

Cabinda Gulf Oil Company (Angola)

Chevron Nigeria, Ltd. (Nigeria)

Chevron Overseas Petroleum, Inc. (Latin America)

ChevronTexaco (Mexico)

Cleveland Electric Illuminating Company (U.S.)

CMS Energy

EnCana Corporation (Ecuador and worldwide)

Government of Chile, National Environmental Council (CONAMA)

GTZ (German Technical Assistance Agency, Chile)

Hunter Mexicana (U.S.)

Indianapolis Power and Light Company (U.S.)

InterGen (Brazil, Spain and Italy)

Kinross Aurelian Mining Company (Ecuador)

Marathon Energy Corporation (Equatorial Guinea)

Occidental Oil and Gas Corporation (Worldwide)

Pacific LNG Consortium (Bolivia)

Santa Fe Energy Resources, Inc. (Colombia and Ecuador)

Shell Exploration and Production Co. (U.S)

Tengizchevroil (Kazakhstan)

Toledo Edison Company (U.S.)

University of Texas, Center for Energy Economics (U.S.)

West Africa Gas Pipeline consortium (Nigeria, Togo, Benin and Ghana)

Williams International Company (Ecuador)

Wisconsin Energy Company (U.S.)