SBB Engenharia recently conducted the "Periodic Safety Review" of the dams and civil structures of the Palmeiras and Retiro SHPPs owned by CTG Brasil, located in the vicinity of São Joaquim da Barra, State of São Paulo. A board of consultants was set up, with specialists in the areas of Geology, Geotechnics, Hydraulics-Hydrology, Mechanics and Dams Instrumentation, which had its coordination and technical visit planned by SBB. The period for the execution of these two Periodic Reviews was about 4 (four) months for these two plants.