Titlebook: Vapor Intrusion Simulations and Risk Assessments; Yijun Yao,Qiang Chen Book 2022 Science Press 2022 Soil vapor intrusion.Risk assessments.

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Vapor Intrusion Risk Assessments in Brownfield Redevelopment,States. In Germany, brownfields include land and underutilized buildings; in France, agricultural land is included in the scope of brownfields [1]. However, contamination and the need for redevelopment and use are common to the brownfield concept. China does not have brownfields within the scope of

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Book 2022d redevelopment. This volume also summarizes the advantages and limits of current applications invapor intrusion risk assessment, laying the groundwork for future research of better understanding in risk characterization of soil vapor intrusion using models.            ..Written by experts in this f

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Screening Models of Vapor Intrusion,, concentrating on the prediction of the contaminant concentration attenuation (i.e., concentration reductions) relative to a subsurface concentration during the soil gas transport process and the migration into a building, as shown in Fig. 1.1 [2]. There are two kinds of VI models. One refers to si

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,US EPA’s Vapor Intrusion Database and Generic Attenuation Factor,2 sites and 21 kinds of chemicals, such as chlorinated chemicals and petroleum products, the latter of which however only cover only 3% of the whole data sets [1]. Other contaminants with VI potential, such as mercury or semi-volatile organic chemicals (SVOCs) are not involved [1]. In the database,

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Preferential Pathways and the Building Pressure Cycling Method, into the sewer system and then enters indoor spaces as sewer gas [1]. As a result, the VI threat to human health can be more severe than typical cases. In other cases, the land drain or the subsurface pipeline can also serve as a preferential or alternative pathway for VI [2, 3].