For the soil profile shown below, the total settlement due to the lowering of the groundwater table was computed to be $4\mathrm{.}6$ inches. It has been several years after the groundwater table was lowered and consolidation is complete. Now the upper $30$ ft of the soil profile is to be excavated to create underground parking for a mid$-$rise building. How much will the base of the excavation heave due to removal of the soil? If the total mass of the structure being constructed is $\backslash (65\backslash \%\backslash )$ of the mass of the soil removed, what will be the net settlement or heave of the structure?