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07/18/2018
Active Soil Gas Sampling

Abs: Active soil gas methods consist of the withdrawal and analysis of the soil gas from the subsurface. These methods give concentration data (for example, μg/m3) for COCs, which can be directly comp...

07/18/2018
Site Investigation

Abs: The site investigation phase starts with implementing a concentration-based evaluation using existing data. If necessary, the next step involves conducting a PVI investigation. Data evaluation is...

07/17/2018
场地调查

摘要:场地调查阶段首先需要借助现有的数据进行基于浓度的初步筛查,根据筛查结果进行石油蒸汽侵入调查。调查过程中采集的数据需要进一步评估,从而决定是否需要更细致的场地调查。最后得出关于石油蒸汽侵入途径的一个完整结论。...

07/17/2018
Site Screening Using Vertical Screening Distance

ABS:This chapter describes a method for PVI screening based on the vertical distance from a petroleum vapor source to a building foundation (vertical separation distance). Application of the method is...

07/17/2018
Characteristics of Petroleum Vapor Intrusion

Abs: Vapor Intrusion (VI) occurs when vapors from contaminated groundwater or other subsurface sources migrate upward through vadose zone soils and into overlying buildings. While PVI has similarities...

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