AMBIENT AIR QUALITY DATA
YEAR - 2004

Annual Average Concentration in mg/m3 of Air Pollutants in West Bengal under NAMP

Table 1: Summary of SO2 levels in various cities during 2004.

S.No.

STATE/UT

CITY

LOCATION

Type of Area

Average
(mg/m3)

Std.

deviation

n

Air Quality

1

West Bengal

Kolkata

Cossipore

I

10

7

96

L

Lal Bazaar

R

10

7

96

L

Kasba

R

8

7

96

L

Haldia

WBIIDC

I

7

2

96

L

Super Market

I

7

3

96

L

Durgapur

Dew India Ltd

I

13

7

69

L

Kwality Hotel

I

6

3

69

L

PCBL Club

R

4

1

70

L

Asansol

Asansol Municipal Corporation

I

6

3

70

L

Table 2: Summary of NO2 levels in various cities during 2004.

S.No.

STATE/UT

CITY

LOCATION

Type of Area

Average
(mg/m3)

Std.

deviation

n

Air Quality

1

West Bengal

Kolkata

Cossipore

I

73

26

96

M

Lal Bazaar

R

63

24

96

H

Kasba

R

43

19

96

M

Haldia

WBIIDC

I

25

11

96

L

Super Market

I

28

10

96

L

Durgapur

Dew India Ltd

I

46

11

69

M

Kwality Hotel

I

43

9

70

M

PCBL Club

R

38

8

70

M

Asansol

Asansol Municipal Corporation

I

46

12

70

M

Table 3: Summary of RSPM levels in various cities during 2004.

S.No.

STATE/UT

CITY

LOCATION

Type of Area

Average
(mg/m3)

Std.

deviation

n

Air Quality

1

West Bengal

Kolkata

Cossipore

I

160

70

96

H

Lal Bazaar

R

132

53

96

C

Kasba

R

111

54

96

C

Haldia

WBIIDC

I

63

49

101

M

Super Market

I

71

54

102

M

Durgapur

Dew India Ltd

I

135

97

69

H

Kwality Hotel

I

117

89

70

M

PCBL Club

R

61

45

70

H

Asansol

Asansol Municipal Corporation

I

120

90

70

H

Table 4: Summary of SPM levels in various cities during 2004.

S.No.

STATE/UT

CITY

LOCATION

Type of Area

Average
(mg/m3)

Std.

deviation

n

Air Quality

1

West Bengal

Kolkata

Cossipore

I

315

124

96

M

Lal Bazaar

R

265

100

96

C

Kasba

R

218

98

96

C

Haldia

WBIIDC

I

132

103

101

L

Super Market

I

155

104

102

L

Durgapur

Dew India Ltd

I

293

200

69

M

Kwality Hotel

I

245

148

70

M

PCBL Club

R

129

80

70

M

Asansol

Asansol Municipal Corporation

I

255

152

70

M

Note:- R – Residential and other areas, I – Industrial area, Std deviation – Standard deviation,

n – number of days monitored for 16 and more hours a day

L- Low, M- Moderate, H – High and C – Critical levels of pollution based on exceedence factor