"What about what has already come into the (environment) system every year? We don't just want prevention, but we want a reversal also," a bench of justices Badar Durrez Ahmed and Ashutosh Kumar said to the Centre, the Delhi government, all civic bodies and pollution control authorities which were also asked to carry out pollution mapping of the national capital.
The court asked the authorities to map the areas in Delhi which are the highest polluters, after it was told by the Delhi Pollution Control Committee (DPCC) that Anand Vihar had the highest levels leading to increase of the average ambient air quality level of the city.
Terming as "alarming" the figures of particulate matter generated from one state alone during the crop-burning season, the bench said one effective way to reduce this pollutant was by having more green cover.
This view was echoed by amicus curiae and senior advocate Kailash Vasdev who also suggested regulation of landfill sites and cleaning up of road and construction debris as additional measures to improve air quality.
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DPCC, meanwhile, was asked to give average ambient air quality figures for Delhi by excluding Anand Vihar.
The commissioners of the three municipal corporations in the city were asked to file their affidavits, indicating their action plan for management and disposal of the waste generated by the national capital, before the next date of hearing on January 12, 2017.
The court said it will consider the affidavits on the next date.
The court was hearing a PIL initiated by it on the issue of alarming levels of air pollution in the national capital.