Toluene-contaminated groundwater is transported under a residential dwelling from a nearby gasoline station. Two meters beneath the dirt floor of the basement is the water table. The groundwater is saturated with toluene. Estimate the flux of toluene into the basement by molecular diffusion (mol/day). Assume the effective diffusion coefficient of hydrocarbon in the soil gas is 0.01 cm2/s. Also assume the basement is well ventilated (ie Cb =0). Assume 1 atm and 25o
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A mixture of benzene, Napthalene, trichloroethylene and chlorobenzene were found in a groundwater plume. Consider the partitioning of these four compounds in a contaminated soil. Assume that the hydrocarbon mixture has contaminated the soil at an average of 0.09 liters of the mixture per cubic meter of soil. Considering the soil above and below the water table (ie. each cubic meter is 60% saturated with water by volume). The soil contains 0.75% organic carbon and has a porosity of 30%...