(a) Original Proceeding

• Claimant(s)/Nationality(ies): (i)
  Waste Management, Inc. (U.S.)
• Respondent(s):
  United Mexican States (Mexican)
• Date Registered:
  November 18, 1998
• Date of Constitution of Tribunal:
  June 3, 1999

Composition of Tribunal

• President:
  Bernardo M. CREMADES (Spanish) - Appointed by the Parties
• Arbitrators:
  Keith HIGHET (U.S.) - Appointed by the Claimant(s)
  Eduardo SIQUEIROS T (Mexican) - Appointed by the Respondent(s)

Initial Composition of Tribunal

• President:
  Bernardo M. CREMADES (Spanish)
• Arbitrators:
  Keith HIGHET (U.S.)
  Julio C. TREVIÑO (Mexican)
• Reconstituted:
  January 10, 2000: Eduardo SIQUEIROS T (Mexican) appointed following the resignation of Julio C. TREVIÑO (Mexican)

Party Representatives

• Claimant(s):
  Baker & Botts, Washington, D.C., U.S.A.
• Respondent(s):
  Dirección General de Consultoría Jurídica de Negociaciones, Subsecretaría de Negociaciones Comerciales Internacionales, Secretaría de Comercio y Fomento Industrial (SECOFI), Mexico City, Mexico
• Language(s) of Proceeding:
  English,Spanish
• Status of Proceeding:
  Concluded
• Outcome of Proceeding:
  Award rendered on June 2, 2000; attached to the award is a dissenting opinion by one of the arbitrators.