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Development of Radon as a Natural Tracer for Monitoring the Remediation of NAPL Contamination in the Subsurface. Annual Report 2002.

DE2004828610

Publication Date	2002
Personal Author	Davis, B. M.; Semprini, L.; Istok, J.
Page Count	12
Abstract	Dense non-aqueous phase liquids (DNAPLs) such as trichloroethene (TCE) and perchloroethene (PCE) present long-term challenges in terms of quantification in the subsurface at many DOE facilities. Over the past year we have continued investigating a potentially lower cost method for quantifying DNAPLs in the subsurface using naturally occurring, in situ dissolved radon as a partitioning tracer. Radon can be used as a partitioning tracer in both static (i.e., no flow) and dynamic methodologies (Semprini et al., 1993; Semprini et al., 1998; Semprini et al., 2000). The static radon method involves obtaining radon samples from DNAPL-contaminated and non-contaminated portions of the aquifer and using the change in radon concentrations to locate and quantify DNAPL saturation in the aquifer. The dynamic radon method incorporates single-well injectionwithdrawal (i.e., push-pull) tests to estimate radon retardation and DNAPL saturation. These methods have the potential to provide a robust method for DNAPL saturation quantification while decreasing the costs associated with these activities.
Keywords	Radon Tracer techniques Contaminatiion Remediation Monitoring Environmental management Non-aqueous phase liquids Dense non-aqueous phase liquids (DNAPLs) Trichloroethene (TCE) Perchloroethene (PDE)
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200509

Development of Radon as a Natural Tracer for Monitoring the Remediation of NAPL Contamination in the Subsurface. Annual Report 2002.

Development of Radon as a Natural Tracer for Monitoring the Remediation of NAPL Contamination in the Subsurface. Annual Report 2002.
DE2004828610

Publication Date	2002
Personal Author	Davis, B. M.; Semprini, L.; Istok, J.
Page Count	12
Abstract	Dense non-aqueous phase liquids (DNAPLs) such as trichloroethene (TCE) and perchloroethene (PCE) present long-term challenges in terms of quantification in the subsurface at many DOE facilities. Over the past year we have continued investigating a potentially lower cost method for quantifying DNAPLs in the subsurface using naturally occurring, in situ dissolved radon as a partitioning tracer. Radon can be used as a partitioning tracer in both static (i.e., no flow) and dynamic methodologies (Semprini et al., 1993; Semprini et al., 1998; Semprini et al., 2000). The static radon method involves obtaining radon samples from DNAPL-contaminated and non-contaminated portions of the aquifer and using the change in radon concentrations to locate and quantify DNAPL saturation in the aquifer. The dynamic radon method incorporates single-well injectionwithdrawal (i.e., push-pull) tests to estimate radon retardation and DNAPL saturation. These methods have the potential to provide a robust method for DNAPL saturation quantification while decreasing the costs associated with these activities.
Keywords	Radon Tracer techniques Contaminatiion Remediation Monitoring Environmental management Non-aqueous phase liquids Dense non-aqueous phase liquids (DNAPLs) Trichloroethene (TCE) Perchloroethene (PDE)
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200509