Work on the Thane-Borivli underground twin tunnel, passing beneath SGNP, is to commence in the coming months. The project is expected to excavate around 3.5 million cubic metres of soil, which equates to the capacity of approximately 1,40,000 large trucks. Three potential dumping sites have been proposed for soil disposal.

Initially, 30,000 cubic metres of soil will be used for developing the casting yard at Kasarvadavli, the report in this paper cited, quoting officials.