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FIELD DEMONSTRATION OF FOAM INJECTION TO CONFINE A CHLORINATED SOLVENT SOURCE ZONE
Portois, C., E. Essouayed, M.D. Annable, N. Guiserix, A. Joubert, O. Atteia.
Journal of Contaminant Hydrology 214:16-23(2018)

The foam's purpose was to reduce dissolved contaminant release to the aquifer by diverting groundwater flow that would normally enter the source area. During the demonstration, the foam was pre-generated and directly injected to surround the chlorinated solvent source zone. Measurements and modeling allowed definition of the foam extent surrounding each injection point, which appeared to be the critical metric to define the success of the foam injection approach. Information on the transport of chlorinated solvents in groundwater showed a decrease of contaminant flux by a factor of 4.4 downstream of the confined area. Effective permeability reduction was maintained over a period of three months.



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