Chairman of the Board, CEO, Member of the Executive BoardMr. Jaime Rotstein serves as the Chairman of the Board of Directors, the Chief Executive Officer and a Member of the Executive Board of Sondotecnica Engenharia de Solos SA. He founded the Company in 1951. In his professional experience of more than 50 years, he performed several different roles, among which Member of National Energy Committee between 1986 and 1989, Member of Grupo Coordenador de Conservacao de Energia and of Programa de Conservacao de Energia Eletrica in representation of Confederacao Nacional de Comercio, in 1991, Founder Member of Academia Nacional de Engenharia, also in 1991, and Member of Conselho Empresarial de Energia da Federacao das Industrias do Estado do Rio de Janeiro and of Centro Industrial do Rio de Janeiro, from February 7, 2000 until the present. He gained a degree in Civil Engineering from the Universidade Federal do Rio de Janeiro in 1951.