Noise Pollution Details in Kolkata
Report of assessment of Noise Pollution survey in Kolkata during Kali puja & Diwali Festivals- 2005
Introduction: The use of loudspeakers is regulated in terms of the Rules under the Environment Protection Act (1986) as well as the orders of the Supreme Court and the Calcutta High Court. The Police is empowered to enforce these rules and the orders. While the legal restrictions are mostly known by and large, special vigilance becomes necessary during festivals such as the Durga Puja, Kali Puja & Diwali. To have a clear idea about the increase of ambient noise level in residential areas in the city of Calcutta and other district town during the festivals, the West Bengal Pollution Control Board (WBPCB) undertook a noise monitoring survey during those days in the year 2005 as in previous years. Noise Pollution Survey procedure: Firecrackers generate instantaneous impulsive noise, which when measured in free field condition in impulsive mode, gives peak sound pressure level. It is quite obvious that a number of crackers when bursting serially can easily form a band of continuous noise in the presence of reflecting surfaces. The reverberation of sound wave due to repeated reflection in the surfaces prolongs the time interval of prevailing sound intensity. The continuous band of noise, thus formed, definitely affects the ambient level in close proximity. The monitoring was conducted at the twenty select locations in Kolkata and Howrah cities:eleven earlier locations such as Salt Lake, Lake Town, Kankurgachi, Beliaghta, Behala, Minto Park, Burrabazar, Jadavpur, rabindra Sarani, Talapark and Howrah Maidan, and nine new locations such as Howrah-Kadamtala, Howrah-mandirtala, Baranagar, Nagerbazer, Baguihatijangra, Kasba-Bosepukur, ballygunge place, Tollygunge-Golf Club Road and New Alipur B Block, on a normal working day, between 6.00 p.m. and 10.00 p.m. The microphone of the Sound Level Meter fitted with windscreen was placed 1.5m above the ground and at least 1m from the
Introduction: The use of loudspeakers is regulated in terms of the Rules under the Environment Protection Act (1986) as well as the orders of the Supreme Court and the Calcutta High Court. The Police is empowered to enforce these rules and the orders. While the legal restrictions are mostly known by and large, special vigilance becomes necessary during festivals such as the Durga Puja, Kali Puja & Diwali. To have a clear idea about the increase of ambient noise level in residential areas in the city of Calcutta and other district town during the festivals, the West Bengal Pollution Control Board (WBPCB) undertook a noise monitoring survey during those days in the year 2005 as in previous years. Noise Pollution Survey procedure: Firecrackers generate instantaneous impulsive noise, which when measured in free field condition in impulsive mode, gives peak sound pressure level. It is quite obvious that a number of crackers when bursting serially can easily form a band of continuous noise in the presence of reflecting surfaces. The reverberation of sound wave due to repeated reflection in the surfaces prolongs the time interval of prevailing sound intensity. The continuous band of noise, thus formed, definitely affects the ambient level in close proximity. The monitoring was conducted at the twenty select locations in Kolkata and Howrah cities:eleven earlier locations such as Salt Lake, Lake Town, Kankurgachi, Beliaghta, Behala, Minto Park, Burrabazar, Jadavpur, rabindra Sarani, Talapark and Howrah Maidan, and nine new locations such as Howrah-Kadamtala, Howrah-mandirtala, Baranagar, Nagerbazer, Baguihatijangra, Kasba-Bosepukur, ballygunge place, Tollygunge-Golf Club Road and New Alipur B Block, on a normal working day, between 6.00 p.m. and 10.00 p.m. The microphone of the Sound Level Meter fitted with windscreen was placed 1.5m above the ground and at least 1m from the