Cleaning Up Clay

by Eric C. Lindhult, Senior Environmental Engineer; Dames and Moore, 2325 Maryland Rd., Willow Grove, PA,
Daniel A. Kwiecinski, Engineering and Design Manager; Dames and Moore, Albuquerque, NM,

Serial Information: Civil Engineering—ASCE, 1996, Vol. 66, Issue 5, Pg. 49-51

Document Type: Feature article


Using soil vapor extraction to remove volatile organic compounds from ground water and unsaturated soils can achieve faster and more-complete cleanups than conventional pump-and-treat remediation methods. In recent years, more treatment options have been developed for pump-and-treat programs to improve efficiency and cleanup time, including two-phase vacuum extraction (VE) and multiphase VE, which treat both soil and ground water. A look at three sites where remediation contractors used two-phase extraction to clean volatile organic compound (VOC) contamination shows how these new systems expand recovery possibilities.

Subject Headings: Soil water | Volatile organic compounds | Unsaturated soils | Soil treatment | Soil gas | Water treatment | Pumps

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