Abstract

AbstractThe sampling and analysis of near surface soil gas has shown great promise for the investigations of underground storage tanks. Trace to elevated concentrations of volatile organic components in soil gas samples have been used to identify source areas near buried tanks and map the migration of releases in groundwater and in the vadose zone. Soil gas surveys are also an effective tool to position soil borings, excavations, and monitoring wells, while support equipment (drilling rigs, backhoe, etc.) is still on site. Two examples are presented where soil gas surveys were used to direct the investigation of underground storage tanks.

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