Vapor Intrusion Database
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Vapor Intrusion Database (XLS) (6.4MB) - data to support site-specific measurements of vapor attenuation, or the reduction in vapor concentrations as volatile contaminants move from soil and groundwater into indoor air. High-quality, representative, and reproducible measurements of soil gas, groundwater, and indoor air contaminant concentrations from VI sites are needed to measure vapor attenuation, verify that VI model predictions are accurate, improve understanding of the operating physical phenomena of VI, and help EPA, states, and other practitioners evaluate and improve predictive models and screening algorithms for the VI pathway.
For your convenience, a User's Guide is provided as the first tab of the Excel® file.