It is tough to breathe easy in Koparkhairane and Turbhe nodes which have violated the national permissible limits for pollutants such as sulphur dioxide, nitrogen oxide, as per the city’s Environmental Status Report (ESR).
Going by the figures over the past five years, all the four continuous ambient air monitoring stations (CAAQMS) in Airoli, Turbhe, Koparkhairane and Nerul have recorded violations for particulate matter (PM10) against the permissible limits of 60g/m3. But in case of Koparkhairane and Turbhe, the increase has been manifold.
Turbhe’s proximity to landfill site has resulted in high methane concentration compared to other stations. “Turbhe has the maximum pollution of PM2.5, followed by Koparkhairane (see box). In case of PM10, both the nodes have exceeded the daily standard of 60g/m by more than four times. The rise in pollution in case of PM10 is mainly due to industrialization and traffic congestion whereas in case of pollution caused by PM2.5 even quarrying is responsible,” said an official.
“Concentration of PM is worrying because these polluting matters can enter the throat, nose and lungs, and lead to heart and lung ailments,” said a TERI official.
Similar violations have been seen in case of SO2 as well. Turbhe node has recorded 287.60g/m3 emission of the pollutant , which is almost 3.5 times the daily standards of 80 g/m3.
The pollution, as per the air quality index (AQI) is stated to be extreme in case of presence of coarse dust particles or particulate matter (PM) between 2.5 and 10 (PM10) and fine dust particles below 2.5 (PM2.5) micrometer diameter.