FIG. 6. Nonaqueous phase liquid (NAPL) anisotropy coefficients as a function of NAPL saturation of soils 9–12 in Table 1 for imposed water pressure head of –2.0 m. Lines: computed relations using Eq. [16] with permeabilities listed in Table 2 and L factors values in plots. Circles: ratio of NAPL permeability values for simulations with flow direction parallel to those normal to soil strata.