The pavement settlement in Taxilane T11 was measured on 31st January 2007 by IOT with reference benchmark at Concourse E which was checked in recent time. The results of the surface settlement as shown in Figure 33, indicated that the average settlement was about 3-4 cm over a period of two years after the completion of the apron. At a settlement rate of 1.5 to 2 cm per year, the underground water should not be enough to fill up the subgrade sand.