• Evaluation of drainage condition beneath the airfield pavement. The drainage condition in the airfield pavement including east/west runway systems and apron constructed by IOT along with the east and west support zones constructed by KPJV was studied to identify any sign of water blockage. The locations of the subsurface structures, including drain channels, box culverts; hydrant fuel lines etc. were reviewed to trace any discontinuity in the subgrade sand.