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Fig. 3. Profiles of volatile organic compounds (VOCs) obtained by multilayer sampler 1 (MLS-1): (a) trichloroethylene (TCE); (b) cis-1,2-dichloroethylene (cis-1,2-DCE), and (c) 1,1-Dichloroethylene (1,1-DCE). The lower x axis denotes VOC concentration in water; the upper x axis denotes VOC concentration in air, calculated using Henry's constant. Closed square symbols denote concentrations in the saturated zone, open squares denote concentrations in the unsaturated zone; wt = water table.
