Ambient Air quality Monitoring Guidlines. - Maharashtra Pollution ...

Violation of NAAQS (24-hourly avg.) of sulphur dioxide (SO2), nitrogen dioxide (NO2), SPM
is given in Table 2.3. There was no violation of NAAQS (24-hourly avg.) with respect to SO2,
and NO2 at locations in residential and industrial areas in Delhi from 1995 to 2001. At traffic
intersection, there was no violation of NAAQS (24 hourly avg.) with respect to SO2 from 1998 to
2001. There was violation of NAAQS (24-hourly Avg.) with respect to NO2 and SPM at traffic
intersection area from 1995 to 2001. There was violation of NAAQS (24-hourly avg.) with
respect to SPM at locations in residential area from 1995 to 2001. At location in industrial areas
there was violation of NAAQS (24 hourly avg.) with respect to SPM during many years.
Table 2.3: Percentage Violation of NAAQS (24-hourly average) at various locations in
Delhi.
Parameter /
Year
Location 1995 1996 1997 1998 1999 2000 2001
R Nizamuddin 0 0 0 0 0 0 0
SO2 Ashok Vihar 0 0 0 0 0 0 0
Janak Puri 0 0 0 0 0 0 0
Siri Fort 0 0 0 0 0 0 0
I Shahdara 0 0 0 0 0 0 0
Shahzada Bagh 0 0 0 0 0 0 0
T.I. BSZ Marg 7 2.4 0.4 0 0 0 0
R Nizamuddin 0 0 0 0 0 0 0
NO2 Ashok Vihar 0 0 0 0 0 0 0
Janak Puri 0 0 0 0 0 0 0
Siri Fort 0 0 0 0 0 0 0
I Shahdara 0 0 0 0 0 0 0
Shahzada Bagh 0 0 0 0 0 0 0
T.I. BSZ Marg 21 36 22 21 15 14 18
SPM R Nizamuddin 98 49 95 52 89 87 67
Ashok Vihar 99 32 87 60 100 86 72
Janak Puri 100 38 88 97 100 92 78
Siri Fort 97 27 96 99 99 86 90
I Shahdara 33 53 5 3 7 17 6
Shahzada Bagh 7 37 1 14 13 42 21
T.I. BSZ Marg 95 97 98 96 96 97 95
2.2.2 Seasonal Variation
a) Seasonal Variation in Carbon Monoxide (CO) Concentrations
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