3.4 Possible Sources of Water Intrusion into Sand Blanket
The presence of water in the subgrade sand of Taxilane T11 had raised more questions by various parties. Photo 24 shows the water flowing out of the riprap above the concrete linings of the secondary canal adjacent to Taxiways G and H on 29th September which was a day after the airport opening. The photograph indicated that the water level in the grassing zone and Taxiway G was probably above +0.0 m MSL since the top of the riprap was at +0.0 m MSL. It should also be noted that there were several heavy rainstorms during the opening week.