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coast of RS, and 9 occurred in years of influence of El Niño. In addition, the results obtained indicated a significant relationship between the PDO index and the rainfall variability in the Pelotas.

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Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons Attribution, que permite uso, distribuição e reprodução em qualquer meio, sem restrições desde que o trabalho original seja corretamente citado.

RESUMO O presente trabalho consiste na avaliação da existência de risco e sua quantificação em casos de vazamentos de derivados do petróleo em uma refinaria localizada na Região Sudeste do Brasil. A área apresenta solo subsuperficial e água subterrânea contaminados por hidrocarbonetos de petróleo e outras substâncias em consequência do funcionamento de uma refinaria. Foram consideradas as vias de exposição por inalação aos contaminantes presentes nesses dois meios. A quantificação do risco de câncer e do quociente de perigo foi realizada para cada substância química, permitindo verificar que, para a exposição a água subterrânea contaminada, não houve efeito carcinogênico e não carcinogênico para os compostos analisados por meio da via de inalação. Já para a exposição a solo subsuperficial contaminado, verificou-se que todos os elementos detectados apresentaram riscos carcinogênicos para ambas as condições analisadas (ambiente aberto e fechado) e ambos os receptores (trabalhadores e comercial). Os elementos benzeno, tolueno, etilbenzeno, o-xileno e m-xileno apresentaram risco não carcinogênico para ambientes fechados em solo subsuperficial contaminado. Em ambientes abertos, somente o xileno,m- não apresentou risco não carcinogênico. Para receptores trabalhadores, somente o benzeno apresentou risco não carcinogênico. Destaca-se a grande importância do gerenciamento de risco para posterior recuperação dessa área afetada.

Both SHPs selected for this study SHP Cabuí (southeast of Minas Gerais state) and SHP Caiçara (northern Minas Gerais state) are located in low-income regions. This study aimed to evaluate the approach used to describe the socio-environmental impacts - through the analysis of attributes and magnitude of impacts - of these two projects and for this, consultations were carried out on the Environmental Impact Studies (EIS) presented by these SHPs, as well as the technical opinions available on the website of the agency responsible for environmental licensing (IBAMA). It was verified that the socio-environmental approaches of the SHPs differed in some aspects. PCH Cabuí, whose previous license was deferred, used more attributes to describe the socioeconomic impacts and the explanation of the impact assessment was more detailed and easy to understand, while the EIS of the Caiçara SHP (previous license rejected) was more succinct in its attributes for the description of the socioeconomic impacts, not adequately presenting the valuation and meaning of its impacts. There is also evidence of the need to improve public participation in both projects.

Oil spills can threaten the environmental quality of coastal ecosystems. The environmental impact of accidents of this type is significant and it is important to understand them in order to assess the magnitude of such accidents. In this way, the present work aimed to discuss some of the main environmental impacts that can be caused by accidents of oil spill in marine and terrestrial environments, besides presenting a review of cleaning processes for the recovery of these degraded areas. In addition, this study aimed to elaborate a Program for the Recovery of Degraded Areas (PRAD) aiming a work plan for a case study: oil leakage in the coastal region of the municipality of Tramandaí (RS). Thus, a description of the study area was carried out aiming the correct elaboration of a work plan for the recovery of the area. The plan was based on preliminary assessment, containment and removal of oil in the aquatic environment, cleaning of the coastal environment, waste management, destination of the recovered area, along with schedule and budgets. The information presented in this paper serves as a support for the elaboration of recovery programs for areas degraded by oil accidents.