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IMPACTS OF DNAPL SOURCE TREATMENT ON CONTAMINANT MASS FLUX
Citation:
BROOKS, M., A. L. WOOD, M. N. GOLTS, M. D. ANNABLE, J. W. JAWITZ, C. G. ENFIELD, R. W. FALTA, AND P. C. RAO. IMPACTS OF DNAPL SOURCE TREATMENT ON CONTAMINANT MASS FLUX. Presented at 2005 SERDP Symposium, Washington, DC, November 29 - December 01, 2005.
Impact/Purpose:
To inform the public
Description:
Current remedial techniques are unable to completely eliminate all dense nonaqueous phase liquid (DNAPL) from source zone areas at most sites, and conflicting views on the benefits of partial DNAPL source zone remediation exist in the literature. A comparison of contaminant flux measurements before and after remedial activities is one metric that has been proposed to elucidate benefits of partial DNAPL removal. Coordinated field, laboratory, and modeling investigations are underway to examine the changes in contaminant flux resulting from DNAPL source treatment and the potential impacts of these changes on site cleanup strategies. Hydraulic properties of the porous media and the nature and distribution of DNAPL are primary determinants of contaminant loading. Thus, the impacts of remediation-induced changes in DNAPL mass and distribution on contaminant loading are being assessed, as well as, methods of estimating critical parameters required for quantifying these impacts.