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DNAPL |
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Although this editorial is devoted to the DNAPL problem, similar observations can also be made about any long-term contaminant source issue. This application builds on iron-clay liner research at the University of Waterloo (Major, 1999), and ZVI-clay DNAPL research at the University of Waterloo and Colorado State University (Wadley & Gillham, 2005, Schackleford et al 2005), which has shown that small percentages of iron mixed with clay can significantly reduce the mass flux of chlorinated organic contaminants (and presumably certain inorganic contaminants) through thin clay layers. statistical homogeneity of aquifer properties, known source-zone DNAPL distribution, and successful bioenhancement in the source zone), source longevity may be reduced by as much as an order of magnitude when physical-chemical source-zone treatment is coupled with reductive dechlorination. |
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