(a) Original Proceeding

• Claimant(s)/Nationality(ies): (i)
  Técnicas Medioambientales Tecmed, S.A. (Spanish)
• Respondent(s):
  United Mexican States (Mexican)
• Date Registered:
  August 28, 2000
• Date of Constitution of Tribunal:
  March 13, 2001

Composition of Tribunal

• President:
  Horacio A. GRIGERA NAÓN (Argentine) - Appointed by Co-Arbitrators
• Arbitrators:
  José Carlos FERNÁNDEZ ROZAS (Spanish) - Appointed by the Claimant(s)
  Carlos BERNAL VEREA (Mexican) - Appointed by the Respondent(s)

Initial Composition of Tribunal

• President:
  Horacio A. GRIGERA NAÓN (Argentine)
• Arbitrators:
  José Carlos FERNÁNDEZ ROZAS (Spanish)
  Guillermo AGUILAR-ALVAREZ (Mexican)
• Reconstituted:
  December 17, 2001: Carlos BERNAL VEREA (Mexican) appointed following the Resignation of Guillermo AGUILAR-ALVAREZ (Mexican)

Party Representatives

• Claimant(s):
  Jones, Day, Reavis & Pogue Abogados, Madrid, Spain
  Juan Carlos Calvo Corbella, Técnicas Medioambientales, TECMED, S.A., Madrid, Spain
• Respondent(s):
  Dirección General de Consultoría, Jurídica de Negociaciones Comerciales, Subsecretaría de Negociaciones Comerciales Internacionales, Secretaría de Economía, Mexico City, Mexico
• Language(s) of Proceeding:
  Spanish
• Status of Proceeding:
  Concluded
• Outcome of Proceeding:
  Award rendered on May 29, 2003.