Cone penetration logging for the direct detection of LNAPLs contamination
J. Kvapil and S. Mares
Journal name: Near Surface Geophysics
Issue: Vol 1, No 4, November 2003 pp. 157 - 160
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Price: € 30
Light non-aqueous phase liquids (LNAPLs), such as crude oil and by-product fuels, represent a common source of organic contamination in the environment. Successful remediation of contaminated sites requires knowledge of the LNAPL distribution in the subsurface. The delineation and monitoring of the LNAPL plume carried out using fluid sampling in monitoring wells can differ from the reality because the residual LNAPLs are trapped in the pores of the soil. Surface geophysical techniques, such as GPR and ERT, can be used only for indirect LNAPL detection. This study suggests the use of cone penetration logging (a combination of cone penetration tests and geophysical logging) as a tool for detecting total hydrocarbon content (residual and movable) in shallow unconsolidated soil materials.