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What are appropriate sampling depths for surface soils?

April 26, 2017appropriate depths Sampling soils

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What are appropriate sampling depths for surface soils?

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As a general rule, samples are collected from 0-6 inches below ground surface (bgs) in source areas and from 0-2 inches bgs in areas of aerial deposition. Additional sampling should be conducted within the 0-2 feet zone in order to determine how much of the soil profile is contaminated and must be removed, etc. However, samples compositing the entire 0-2 feet zone should not be collected, as more discreet intervals provide better information.