The peak level of noise during the twin tower demolition on Sunday was recorded at 101.2 decibels in close vicinity, according to official figures.
The Uttar Pradesh Pollution Control Board (UPPCB) had installed six machines to measure the ambient noise and the figures of the three places closest to the twin towers were taken for this measurement, officials said.
The three machines were installed at Parsvnath Prestige, Barat Ghar and the City Park – all around 300-500 metres from the blast site.
The ambient noise before the demolition was recorded 49.5 decibels at Parsvnath Prestige, 65.9 decibels at Barat Ghar and 56.6 at the City Park, according to the data.
During the demolition, the noise was recorded at 84.9 decibels at Parsvnath Prestige, 101.2 decibels at Barat Ghar and 89.8 at the City Park, the data showed.
The noise level after the demolition was recorded at 60.8 decibels at Parsvnath Prestige, 63.1 decibels at Barat Ghar and 59.2 at the City Park, according to the data.
“The noise level peaked at 101.2 decibels during the demolition at the City Park, which is located in front of the now-demolished twin towers,” Regional Officer UPPCB Praveen Kumar told PTI.
He said the firms which were engaged for demolition of the twin towers had also placed some monitoring devices much closer to the site but their findings would take time to come.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)
Noida Towers Razed, Residents' Evening Celebration Today "Hugged Each Other And Cried": Man Who Pressed Button To Raze Noida Towers Watch: Jaw-Dropping Drone Footage Of Noida Twin Towers' Demolition Maharashtra Chief Minister To Be From BJP, Will Have 2 Deputies: Sources Air India Pilot, 25, Dies By Suicide In Mumbai, Boyfriend Arrested Two Drunk Fliers, Two Supreme Court Judges And 30-Minute Mid-Air Drama Planning To Visit The Maldives? Read This Important Change For Tourists Woman Uses Company Funds To Throw Farewell Party But Never Leaves The Job NASA Discovers Secret US Military Base 100 Feat Beneath Greenland Ice Sheet Track Latest News Live on NDTV.com and get news updates from India and around the world.