1. On 27 September 2000, the Acting Secretary-General of ICSID registered a notice for the institution of arbitration proceedings, lodged by Waste Management Inc. (“Claimant”) under the ICSID Arbitration Additional Facility Rules (“the Rules”) against the United Mexican States (“Respondent”). The Claimant alleged that the Respondent is liable under Articles 1110 and 1105 of NAFTA for the actions of various state organs concerning the Claimant’s investment in an enterprise to provide waste management services to the City of Acapulco in the State of Guerrero.