National Ambient Air Quality Standards (NAAQS) for 24鈥揾our average sulfur dioxide (SO2), nitrogen dioxide (NO2) and suspended particulate matter (SPM), monitored at the four National Ambient Air Quality Monitoring (NAAQM) stations run by the Central Pollution Control Board (CPCB) for Delhi ...
CENTRAL POLLUTION CONTROL BOARD (Ministry of Environment and Forest, Govt. of India) PariveshBhawan, East Arjun Nagar Delhi - 110032 Website: www.cpcb.nic.in e-mail: cpcb@nic.in.National Ambient Air Quality Standards, 2009. Central... P Bhawan,EA Nagar - 《Central Pollution Control Board ...
NATIONAL AMBIENT AIR QUALITY STANDARDS (NAAQS) * Annual Arithmetic mean of minimum 104 measurements in a year twice a week 24 hourly at uniform interval. ** 24 hourly/8 hourly values should be met 98% of the time in a year. However, 2% of the time, it may exceed but not on two con...