Private construction banned in Anand Vihar, adjoining areas amid spike in pollution levels
According to the Graded Response Action Plan (GRAP), if air quality turns "severe" (AQI 401 to 450) authorities are required to enforce a ban on construction and demolition activities in Delhi-NCR, except on essential projects.

"Therefore... it is directed to all concerned to stop private construction with immediate effect till further direction. Non-compliance of the direction will be viewed seriously," it read.
According to the Graded Response Action Plan (GRAP), if air quality turns "severe" (AQI 401 to 450) authorities are required to enforce a ban on construction and demolition activities in Delhi-NCR, except on essential projects (like railways, metros, airports, ISBTs, national security/defence-related projects of national importance) and non-polluting activities such as plumbing, carpentry, interior decoration and electrical works.
GRAP is classified under four stages of adverse air quality in Delhi.
Stage one in a case of 'poor' air quality (AQI 201-300); stage two for 'very poor' air quality (AQI 301-400); stage three for 'severe' air quality (AQI 401-450); and stage four for 'severe plus' (AQI >450).
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