 The Maintenance Agreement that was entered into between Metro rail and Sumitomo Corporation (the “Provider”) sets forth the terms on which the Provider will provide maintenance and repair services (the “Services”), for a period of ten (10) years, for the System.As compensation for Services, Metro rail agreed to pay a base fee (the “Base Fee”) adjusted in accordance with a price escalation formula (the ”Annual Maintenance Fee”), for each year such Services are provided.The Base Fee in the first year is approximately US$15.3-million stepping up to approximately US$18-million on the 6th year.