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In this study, three dimensional and two dimensional laboratory experiments were conducted to investigate the effect ofwater table rising on DNAPL migration, contaminants mass discharge (M d ), and residual NAPL distribution. Theaccumulation of TCE in unsaturated zone was observed in both two and three dimensional experiments. This impliesDNAPL sources could exist in unsaturated zone at contaminated sites. It has been investigated that the TCE concentrationis proportional to the areal ratio of residual TCE. This means the residual TCE obviously could affect the TCEconcentration in aquifer system. The results of the two-dimensional experiment indicated that the contaminant sources inunsaturated zone could lead the M d increasing with water table rising and the source zone heterogeneity could also highlyaffect the M d .Key words :DNAPL, TCE, Migration, Contaminant mass discharge, Water table rising 1.     TCE(Trichloroethylene) PCE(Tetrachloroethylene)                    (Lopes and Bender, 1998; Yang etal., 2012).           ,  TCE      0.03 mg/L  (Ministry of Environment, 2011).            DNAPL(Dense Non-AqueousPhase Liquid)   .     DNAPL                DNAPL . ,      DNAPL                 (Kim, 2004; Masashi etal., 2004; Luciano et al., 2010).     DNAPL        , DNAPL (source)            (Jellali

Investigation for TCE Migration and Mass Discharge Changes by Water Table Rising in Porous Media