ASTM D7758
Standard Practice for Passive Soil Gas Sampling in the Vadose Zone for Source Identification, Spatial Variability Assessment, Monitoring, and Vapor Intrusion Evaluations
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- Language: English
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About This Item
ASTM D7758 is the ASTM standard for passive soil gas sampling in the vadose zone, with guidance aimed at source identification, spatial variability assessment, monitoring, and vapor intrusion evaluations. It provides a technical framework for collecting soil gas data in a way that supports more consistent environmental assessment and decision-making. For projects that rely on subsurface vapor measurements, this standard helps align field practice with a recognized method for sampling and interpretation.
Purpose of ASTM D7758
The purpose of ASTM D7758 is to support passive soil gas sampling activities in the vadose zone using a standardized approach. The title indicates its focus on identifying potential sources, assessing how soil gas conditions vary across a site, and supporting monitoring and vapor intrusion evaluations. As a technical document, it is intended to improve consistency in field sampling and help practitioners generate data that is more comparable across locations, projects, and evaluation periods.
Common use cases of ASTM D7758
This standard is commonly used in environmental investigations where soil gas conditions need to be evaluated without active sampling methods. It is relevant for site characterization, source area screening, and checks for spatial variability in the vadose zone. ASTM D7758 may also be used during monitoring programs and vapor intrusion-related assessments, where passive sampling results can help inform further evaluation, data review, or sampling plan decisions.
Why ASTM D7758 matters
ASTM D7758 matters because it supports more consistent and defensible soil gas sampling practices in environmental work. When projects depend on passive measurements in the vadose zone, using a recognized standard can help improve data quality, reduce procedural variation, and support compliance-oriented documentation. It is also useful for procurement and specification purposes, since buyers and project teams can reference a defined ASTM standard when selecting methods for source identification or vapor intrusion evaluation.
- Passive soil gas sampling guidance
- Vadose zone field application
- Source identification support
- Spatial variability assessment
- Monitoring and vapor intrusion evaluation
- Publication Date: 2017-07-19
- Publisher: ASTM
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