For a second Diwali in a row, Mumbai noisier during the day
For a second year in a row, noise levels were higher during the day than during the night this Diwali and subsequent days, a noise report compiled by the state pollution board found. However, comparative data from previous years showed a declining trend for noise levels from 2014 to 2016.mumbai Updated: Nov 03, 2016 00:16 IST
For a second year in a row, noise levels were higher during the day than during the night this Diwali and subsequent days, a noise report compiled by the state pollution board found. However, comparative data from previous years showed a declining trend for noise levels from 2014 to 2016.
According to data from the Maharashtra Pollution Control Board, the decibel (dB) level during the three days of Diwali was highest at Subhash Nagar, Goregaon during the day (6am to 10pm), with average noise levels at 81.4 dB. During the night time (10pm to 6am), the area around the administrative building, Mantralaya in south Mumbai was loudest at 71 dB.
In all, MPCB recorded noise levels at 45 locations through 24-hour noise monitoring according to the Central Pollution Control Board’s (CPCB) protocol in Mumbai with average noise levels throughout the city between 62 and 81 dB on Diwali (October 30) during the day and 57 and 76 dB during the night. However, the pollution board did not provide peak noise levels this year.
The pollution board also recorded noise a day after Diwali (Monday) and November 1 (Tuesday). On Monday, Shivaji Park in Dadar, a Silence Zone, was the loudest during the night at 76 dB, 5 Rasta at Mulund (West) was loudest during the day at 77.5 dB. Similarly, the area near New Passport office, Worli recorded 77.1dB during the day and 76.9 dB was recorded at Police Colony in Mahim during the night on Tuesday, which was also the highest night time noise level this year during the three days of Diwali.
The area around Metro Cinema, Girgaon was the quietest on Diwali (October 30) at 62.3 dB during the day and the Dindoshi Bus depot area was the quietest at 57.3 dB.
According to Noise Pollution (Regulation and Control) Rules, 2000, residential and silence zones — areas around schools, hospitals and religious shrines — should have a maximum noise level of 55dB and 50dB in the day and 45dB and 40dB at night.
MPCB officials said that there was an overall drop in noise levels in Mumbai and attributed it to more awareness among people. “Our 45 noise monitoring stations across the city saw a drop in noise levels at every location this year. While noise during the day was higher due to the use of firecrackers combined with ambient noise from vehicles and construction, there were relatively less firecrackers during the nightacross Mumbai,” said Sanjay Bhuskute, public relations officer, MPCB.
Last year, the highest noise levels on Diwali (November 12), recorded during the day, were from Trombay (near Ashish Cinema) during the day at 90dB and Versova during the night at 87.6dB. However, an opposite trend was observed during Diwali 2014 (October 23) when Nariman Point, Colaba was loudest at 99.8 during the night and Dahisar (East) was loudest at 91.1 during the day.
“We selected residential areas where the most firecrackers would be burst, especially on busy main roads. The high noise levels during the day include not only firecrackers but things like construction and vehicle movement at busy junctions,” said Bhuskute adding, “A decline in the sale of firecrackers and an increased police presence are some of the reasons for the lower noise levels.”
Anti-noise activists said that the MPCB Report indicated that noise levels at the same fixed points for three consecutive years showed a clear downward trend. “Both MPCB and Awaaz Foundation reports indicate a consistent downward trend and 2016 was the quietest Diwali in a decade,” said Sumaira Abdulali, convener, Awaaz Foundation. “However, daytime decibel levels are higher than night time, as the locations are not those where maximum numbers of crackers were burst.”
Awaaz Foundation reports indicated that maximum crackers were burst after 10pm at open spaces like Marine Drive that recorded maximum noise levels at 113.5 dB. “There are no findings of MPCB at these locations,” she said.
Meanwhile, sector 10, Koparkhairne in Navi Mumbai was loudest on Diwali at 76.8 dB while Gokhale Road, Thane was noisiest at 75.8 dB. MPCB recorded noise levels from a total of 109 locations in Maharashtra including Mumbai, Thane, Navi Mumbai, Ulhasnagar, Pune, Nashik, Nagpur, Aurangabad, Kalyan and Kolhapur.