Wednesday, October 04, 2017

Raising wall height at IGI unlikely to reduce noise: IIT

New Delhi: Indian Institute of Technology (IIT) Delhi has told the National Green Tribunal that raising the height of the peripheral wall around the IGI airport here may not result in reducing noise pollution emanating from aircraft.
The IIT experts told a bench headed by NGT chairperson Justice Swatanter Kumar that with every 1 metre increase in the barrier height, no substantial drop in the sound pressure level was noticed during the study conducted by it.
“Air gap between the existing wall and the proposed additional construction on top of the existing wall should be effectively sealed, while allowing for the thermal expansion of the structure,” the IIT report said.
The report was filed in pursuance to the NGT’s direction to conduct a study after hearing a batch of pleas filed by the residents of south Delhi’s Vasant Kunj, NGO Society for Protection of Culture Heritage, Environment, Traditions and Promotions of National Awareness (Chetna) and others seeking directions to reduce noise level in the residential areas near the IGI airport here.
NGO Chetna president Anil Sood termed the report as an “eyewash” and said it was contrary to the IIT-Delhi’s earlier report which had said that the height of the barrier was found to have influence on noise attenuation.
He alleged that the report has been prepared at the behest of Delhi International Airport Limited (DIAL) which has been trying to put forward its own agenda.
The NGT has fixed the matter for hearing on October 10.
03/10/17 PTI/