A Review of Recent Vapor Intrusion Modeling Work

Verginelli, Iason; Yao, Yijun

doi:10.1111/gwmr.12455

Cited by 16 publications

References 56 publications

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Short‐term temporal variability of volatile contaminant concentrations in soil gas related to soil–atmosphere interface dynamics: Two case studies in the Veneto region (Italy)

Federico,

Davide

2024

Integr Envir Assess & Manag

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The study of the variability of soil gas concentrations is crucial for defining effective monitoring and remediation strategies and for the risk assessment related to the emission of vapors from the subsurface. The traditional soil gas monitoring strategy consists of seasonal surveys based on short‐time‐averaged sampling. Soil gas monitoring results are often used to assess the risk associated with the emission of volatile contaminants from the subsurface, using models mainly based on molecular diffusion and therefore assuming continuous emission from the soil. At two contaminated sites located in the Veneto region (Italy), continuous monitoring using a photoionization detector, pressure gauges, and an ultrasonic anemometer was used to relate soil gas variability to surface and subsurface physical parameters. At both sites a cyclic diurnal variation of volatile organic compounds concentration in soil gas was observed, correlated with the variation of several meteorological parameters and in particular with the variation of the differential pressure between soil and atmosphere and the buoyancy vertical flux. These findings question the reliability of the conventional methodology employed in the collection and assessment of soil gas data. Integr Environ Assess Manag 2024;00:1–10. © 2024 SETAC

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Short‐term temporal variability of volatile contaminant concentrations in soil gas related to soil–atmosphere interface dynamics: Two case studies in the Veneto region (Italy)

Federico,

Davide

2024

Integr Envir Assess & Manag

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Petroleum Vapor Intrusion

Verginelli

2023

Advances in the Characterisation and Remediation of Sites Contaminated With Petroleum Hydrocarbons

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Petroleum vapor intrusion (PVI) is the process by which volatile petroleum hydrocarbons released from contaminated geological materials or groundwater migrate through the vadose zone into overlying buildings. PVI science showed that petroleum hydrocarbons are subjected to natural attenuation processes in the source zone and during the vapor transport through the vadose zone. Specifically, in the presence of oxygen, aerobic biodegradation typically reduces or eliminates the potential for PVI. This behavior justifies the different approach usually adopted for addressing PVI compared to less biodegradable compounds such as chlorinated solvents. In some countries, it was introduced the concept of vertical exclusion distance criteria, i.e., source to building distances above which PVI does not normally pose a concern. For buildings where the vertical separation distance does not meet screening criteria, additional assessment of the potential for PVI is necessary. These further investigations can be based on modeling of vapor intrusion, soil gas sampling, indoor measurements or preferably a combination of these to derive multiple lines of evidence. The data collected are then used for a risk assessment of the vapor intrusion pathway. This chapter provides an overview of state-of-the-science methodologies, models, benefits and drawbacks of current approaches, and recommendations for improvement.

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Screening Models of Vapor Intrusion

Yao

Chen

2022

Vapor Intrusion Simulations and Risk Assessments

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A Review of Recent Vapor Intrusion Modeling Work

Cited by 16 publications

References 56 publications

Short‐term temporal variability of volatile contaminant concentrations in soil gas related to soil–atmosphere interface dynamics: Two case studies in the Veneto region (Italy)

Short‐term temporal variability of volatile contaminant concentrations in soil gas related to soil–atmosphere interface dynamics: Two case studies in the Veneto region (Italy)

Petroleum Vapor Intrusion

Screening Models of Vapor Intrusion

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