‘Pollution levels remained high during second week’
The Delhi Pollution Control Committee (DPCC) on Monday told the National Green Tribunal (NGT) that pollution levels remained high during the second week of the odd-even scheme.
The DPCC report, which spans three intervals — seven days before, 15 days during the car-rationing scheme, and seven days after — has attributed the decline in the air quality to a reduced wind speed and direction, and crop burning, with blazes at landfill sites and forest fire in Uttarakhand being added factors.
“In the second week of the event (April 22-30), pollutions level increased due to a dip in wind speed (0.72-1.68m/s). Almost the same trend was observed in PM10 and nitrogen dioxide,” read the report.
The same trend was observed for residential areas, a Bench headed by NGT chairperson Justice Swatanter Kumar was told. “It is also observed that local and trans-State movement of pollutants influenced the air quality of Delhi. The probable factors are crop residue burning in Haryana and Punjab, and fire incidents in Delhi and Uttarakhand,” the DPCC report said.
DPCC went on to state that the range of concentration of particulate matter decreased compared to the previous week (pre-event) during the first week of the scheme.
It said that the average value of PM2.5 went up to 111 during the first week of the scheme and 154 in the second week. The safe standard of PM2.5 is 60.
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