Unsaturated Soils $(15$ points$)$

Considering the profile below, plot the distribution of pore pressures with depth $($from the ground surface to a depth of $45$ m $)$ as well as the distribution of saturation with depth using the van Genutchen model. For this model, use $n=2\mathrm{.}0,=0\mathrm{.}05,s=0\mathrm{.}4,$ and $r=0\mathrm{.}05.$ Note that the sand deposit is uniform, with a porosity of $0\mathrm{.}4.$