A bench headed by Justice P Jyothimani reserved its order for October 28 after hearing extensive arguments from the builders who claimed the 10 km radius around the sanctuary has not been declared an eco-sensitive zone.
The tribunal had on September 18 directed the Noida and Gautam Budh Nagar authorities to ensure that no construction work is carried out in the 49 projects around the sanctuary.
The builders then approached the tribunal claiming that there is no such order or notification declaring it a sensitive zone.
Also, the Uttar Pradesh government today submitted its notification dated May 8, 1990 by which it said the Okhla bird sanctuary was notified as a sanctuary under the Indian Wildlife Protection Act.
Also Read
During the arguments, the builders contended that the area around the sanctuary has not been declared a sensitive zone and stressed that they are not against the sanctuary as they "want it to survive since it is the beauty of their projects".
The petition, filed through advocate Gaurav Kumar Bansal, contended that without obtaining any prior clearance from the NBWL or State Environment Impact Assessment Authority (SEIAA), around 55 builders are carrying on construction work around the sanctuary.