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Assessing the vapor intrusion pathway: applicability of international regulatory guidelines for contaminated sites in Brazil (2022)

  • Authors:
  • USP affiliated author: VALLE, PAULO DE TARSO AMMON - EP
  • School: EP
  • Sigla do Departamento: PQI
  • Subjects: ÁREAS CONTAMINADAS; NORMAS TÉCNICAS
  • Language: Inglês
  • Abstract: The USEPA defines Vapor Intrusion (VI) as the migration of vapors from a subsurface source, such as contaminated soil and groundwater, into overlying buildings or enclosed spaces. The outcome of a VI assessment is a decisive factor in defining the risk management strategy for a contaminated area. However, despite of the growing awareness of the processes governing VI, there are still countries without guidelines to structure the VI assessment and its decisionmaking process (Brazil as an example). The current study provides an overview of key elements involved in VI assessments, and discuss the applicability of US and European regulatory guidelines for contaminated sites in Brazil. The general VI assessment approach involves using conservative modeling and risk assessment tools to assess if VI is occurring, and sampling campaigns to confirm if the VI pathway is complete. Characterizing the VI pathway is a complex process that requires a thorough understanding of the contaminant distribution in subsurface and of the processes governing soil gas transport towards potential receptors. Regional climate patterns and local building conditions will influence considerably the attenuation process occurring from source to the receptor, therefore the use of empirical data sets that reflect local country conditions generally results in more accurate risk based decision-making. This document describes the importance of elaborating receptor specific Vapor Intrusion Conceptual Site Models that represent accurately the processes occurring in the subsurface and in the receptors, and propose elements to be included in a VI guideline document for sites located in Brazil.
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    • ABNT

      VALLE, Paulo. Assessing the vapor intrusion pathway: applicability of international regulatory guidelines for contaminated sites in Brazil. 2022. Trabalho de Conclusão de Curso (MBA) – Escola Politécnica, Universidade de São Paulo, São Paulo, 2022. Disponível em: https://bdta.abcd.usp.br/directbitstream/4c27876b-fab9-4929-9699-52377d45889a/PauloValle%20PQI22.pdf. Acesso em: 19 mar. 2024.
    • APA

      Valle, P. (2022). Assessing the vapor intrusion pathway: applicability of international regulatory guidelines for contaminated sites in Brazil (Trabalho de Conclusão de Curso (MBA). Escola Politécnica, Universidade de São Paulo, São Paulo. Recuperado de https://bdta.abcd.usp.br/directbitstream/4c27876b-fab9-4929-9699-52377d45889a/PauloValle%20PQI22.pdf
    • NLM

      Valle P. Assessing the vapor intrusion pathway: applicability of international regulatory guidelines for contaminated sites in Brazil [Internet]. 2022 ;[citado 2024 mar. 19 ] Available from: https://bdta.abcd.usp.br/directbitstream/4c27876b-fab9-4929-9699-52377d45889a/PauloValle%20PQI22.pdf
    • Vancouver

      Valle P. Assessing the vapor intrusion pathway: applicability of international regulatory guidelines for contaminated sites in Brazil [Internet]. 2022 ;[citado 2024 mar. 19 ] Available from: https://bdta.abcd.usp.br/directbitstream/4c27876b-fab9-4929-9699-52377d45889a/PauloValle%20PQI22.pdf

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