Indicative Schedule

See concession agreements schedule.

e

Event Date Offered Basins Announced July, 23th, 2007 Preliminary Tender Protocol and Licensing Agreement Draft Publication August, 10th, 2007 Data Package Available August, 13th, 2007 Public Hearing Session (Rio de Janeiro) August, 23th, 2007 Enviromental/Technical Seminar August, 30th and 31th, 2007 Legal Seminar September, 11th, 2007 Final Tender Protocol and Licensing Agreement Publication September, 18th, 2007 Documents presentation deadline October, 18th, 2007 Participation fees submission deadline November, 23th, 2007 Warranties submission deadline November, 23th, 2007 Bidding Sessions November, 27th and 28th, 2007 Licensing Agreements Signature March, 2008

This is only an indicative schedule. It can be modified or suspended without prior warning