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Remediating Contaminant Plumes in Groundwater with Shallow Excavations Containing Coarse Reactive Media

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  • Paul F. Hudak

    (University of North Texas, Department of Geography and the Environment)

Abstract

A groundwater flow and mass transport model tested the capability of shallow excavations filled with coarse, reactive media to remediate a hypothetical unconfined aquifer with a maximum saturated thickness of 5 m. Modeled as contaminant sinks, the rectangular excavations were 10 m downgradient of an initial contaminant plume originating from a source at the top of the aquifer. The initial plume was approximately 259 m long, 23 m wide, and 5 m thick, with a downgradient tip located approximately 100 m upgradient of the site boundary. The smallest trench capable of preventing offsite migration was 11 m long (measured perpendicular to groundwater flow), 4 m wide (measured parallel to groundwater flow), and 3 m deep. Results of this study suggest that shallow trenches filled with coarse filter media that partially penetrate unconfined aquifers may be a viable alternative for remediating contaminated groundwater at some sites.

Suggested Citation

  • Paul F. Hudak, 2018. "Remediating Contaminant Plumes in Groundwater with Shallow Excavations Containing Coarse Reactive Media," Environmental Management, Springer, vol. 61(2), pages 304-309, February.
    • Handle: RePEc:spr:envman:v:61:y:2018:i:2:d:10.1007_s00267-017-0977-2
    DOI: 10.1007/s00267-017-0977-2
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