São Paulo were to be transported to Caldas, where they would be stored. Amid popular mobilizations against it, then-MG Governor Itamar Franco issued a decree prohibiting the entry of radioactive waste into MG from other states. The radioactive material remains stored in São Paulo. Bahia The sole active mine in Brazil, the Uranium Concentrate Unit (Unidade de Concentrado de Urânio – URA), is located in Bahia, possessing an estimated 100,000 tons of uranium reserves. This amount could supply the three Angra power plants currently in operation, in addition to four other planned ones, until the end of their life cycles. Since 1998, when mining activities started in Caetité, annual uranium production at URA has varied; it peaked in 2008, when 400 tons of uranium concentrated were produced. Mining activity in Caetité has generated detrimental environmental effects, including contamination of water in nearby districts. An independent study commissioned by international environmental Non-governmental organization (NGO) Greenpeace showed that the concentration of uranium in some wells located 8 kilometers away from the uranium mine, in the district of Juazeiro, BA, was seven times higher than the limit established by the World Health Organization (WHO). In April 2010, the Institute for Water and Climate Management (Instituto de Gestão das Águas e Clima – INGA), the agency responsible for water and climate management within the Bahia state government, recommended shutting down the water fountain that served Juazeiro due to the district's high uranium levels. A few months later, a technical mission led by Dhesca Brasil, a network of human rights organizations, observed that the fountain continued to be in use and the residents had not been informed about the risks of consuming its water. In May 2011, after learning that 13 trucks loaded with radioactive material were about to leave from São Paulo to Caetité, local residents and activists asked for official explanations and requested that safety measures be taken. In a letter sent to local authorities, the claimers inquired about the nature of the material being transported, why it was destined for Caetité, potential risks associated with the transportation, and whether proper permission had been granted. When their letter went unanswered, the population organized a vigil constituting thousands of people. More than 3,000 protestors made a human chain and impeded 13 trucks from coming into the city. INB published a note in its website claiming that the cargo consisted of chemical compounds of uranium,