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Hi everyone..

As per CPCB, Ambient Air Quality Standards in India should be as follows;

Sulphur Dioxide (SO2), 
µg/m3
Annual*
24 hours**
50 80 20 80
Nitrogen Dioxide (NO2), 
µg/m3
Annual*
24 hours**
40 80 30 80
Particulate Matter (size less than 10 µm) or PM10 µg/m3 Annual*
24 hours**
60 100 60 100
Particulate Matter (size less than 2.5 µm) or PM2.5 µg/m3 Annual*
24 hours**
40 60 40 60
Ozone (O3) µg/m3 8 hours*
1 hour**
100 180 100 180
Lead (Pb) 
µg/m3
Annual*
24 hours**
0.50 1.0 0.50 1.0
Carbon Monoxide (CO) mg/m3 8 hours*
1 hour**
02 04 02 04
Ammonia (NH3) µg/m3 Annual*
24 hours**
100 400 100 400
Benzene (C6H6) µg/m3 Annual* 5 5
Benzo(a)Pyrene (BaP)- particulate phase only, 
ng/m3
Annual* 1 1
Arsenic(As), 
ng/m3
Annual* 6 60
Nickel (Ni), 
ng/m3
Annual* 20

20

This is for ambient air quality limit for different pollutants.

Suppose if a stack is emitting pollutants, what will be the maximum amount, they can emit?

Is there any standard limit for stack emission level for different pollutants?

Can anyone please help me..

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Stack emission standards depends on the type of industry, type of process, type of equipment, capacity, etc.

Refer to Environmental Protection Act 1986 & the Air consent

http://cpcb.nic.in/openpdffile.php?id=UmVwb3J0RmlsZXMvMzBfMTQ1ODExM...

Thank you sir..

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