Minimal Pollution during Deepawali 2020
Source: SPCB Sikkim
The State Pollution Control Board (SPCB), Sikkim carried out a special monitoring of Ambient Air Quality and Noise pollution during Deepawali festival at two locations in the state capital viz. Deorali, Forest Secretariat and M.G. Marg (Titanic Park) in Gangtok, EastSikkim for a period of 15 days between 7th of November, 2020 to 21st of November, 2020 to assess the level of pollution in three phases i.e pre-Deepawali, Deepawali and post-Deepawali.
As per the data generated during the monitoring programme, it was found that the level of ambient air pollution was quite low and largely remained unaffected during the Deepawali festival. The figures were well within the Air Quality Standard notified by the Central Government. Accordingly, the AQI was between Good and Satisfactory. However, in case of noise pollution, it was observed that the noise level exceeded the prescribed limit during night time on the day of Deepawali which may be attributed to vechular movement, street noise mainly from people visiting markets, firecrackers.
The SPCB Sikkim had further brought out Appeal in the Newspaper soliciting cooperation from general public to prevent all form of pollution including Noise Pollution. Also, Holdings and Pamplets were also distributed throughout the state for generating awareness on the matter.
The findings of the monitoring are as follows:
NAME OF LOCATION:DEORALI (FOREST SECRETARIAT),GANGTOK
|
|
PARAMETERS MONITORED(Average value)
|
|
DATE
|
SO2
(µg/m³)
|
National Standard
|
NO2
(µg/m³)
|
National Standard
|
PM10
(µg/m³)
|
National Standard
|
PM2.5
(µg/m³)
|
National Standard
|
Air Quality Index
|
|
PRE-DEEPAWALI
7th to 13th Nov. 2020
|
7.30
|
80
|
16.80
|
80
|
34.38
|
100
|
20.78
|
60
|
Between (47 and 29) (GOOD)
|
|
DAY OF DEEPAWALI
14th Nov. 2020
|
10.60
|
13.69
|
36.37
|
33.52
|
56(Satisfactory)
|
|
POST DEEPAWALI
15th to 21st Nov. 2020
|
7.40
|
14.74
|
38.03
|
26.88
|
Between(57 and 53) Satisfactory
|
NAME OF LOCATION: M.G MARG (TITANIC PARK),GANGTOK
| |
|
|
PARAMETERS MONITORED(Average value)
|
|
DATE
|
SO2
(µg/m³)
|
National Standard
|
NO2
(µg/m³)
|
National Standard
|
PM10
(µg/m³)
|
National Standard
|
PM2.5
(µg/m³)
|
National Standard
|
Air Quality Index
|
|
PRE-DEEPAWALI
7th to 13th Nov. 2020
|
6.64
|
80
|
20.76
|
80
|
51.77
|
100
|
30.63
|
60
|
Between (64 and 66) (Satisfactory)
|
|
DAY OF DEEPAWALI
14th Nov. 2020
|
5.20
|
22.64
|
40.86
|
24.46
|
41(Good)
|
|
POST DEEPAWALI
15th to 21st Nov. 2020
|
6.98
|
16.53
|
57.63
|
28.19
|
Between(61 and 63) Satisfactory
|
Ambient Noise monitoring at MG Marg : The noise level were monitored from 6pm till midnight at the site.
|
Sl.no.
|
Date
|
Noise level in dB(A) Leq
|
National Standard
dB(A)Leq
|
|
1.
|
9.11.2020
(Pre-deepawali Day)
|
60.96
|
65 (day)
55(Night)
|
|
2.
|
14.11.2020
(Deepawali Day)
|
57.39
|