Abstract
AbstractA comprehensive investigation of subsurface vapor intrusion into buildings in the Village of Endicott in upstate New York provided an unusually rich data set for studying the relationship between subslab soil gas and indoor air concentrations. The study concludes that vapor intrusion into buildings with basement foundations and concrete floors generally results in ratios of subslab soil gas to indoor air concentrations greater than 100:1 at this site. The data set also shows that ambient background‐ and indoor‐contaminant vapor sources can result in measured indoor air concentrations that could be mistakenly ascribed to subsurface‐contaminant vapor sources and erroneous conclusions regarding the relationship between subslab soil gas and indoor air concentrations. By separating the measured subslab soil gas concentrations of tetrachloroethene, trichloroethene, and 1,1,1‐trichloroethane into low‐ and high‐range data subsets, the influence of background and indoor sources of these compounds was more easily discerned.
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