GRAP (Graded Response Action Plan) is a set of emergency action plan which is implemented in four stages depending upon the severity of the air pollution that is determined by the air quality index (AQI). The GRAP for Delhi-NCR and neighbouring areas are divided into four stages- Stage 1- “poor” AQI ranging between 201 and 300 In this stage, the government ensures proper implementation of guidelines on dust mitigation measures and sound environmental management of Construction and Demolition (C&D) wastes. Stage 2- “very poor” AQI of 301-400 Stage II necessitates a ban on diesel generators, the use of coal or firewood in hotels, restaurants, and open eateries, increased parking fees, and increased bus an For the past week, Delhi has been suffering from its worst air pollution with air quality index (AQI) hitting as high as 400 and even 999 in some areas. To combat deteriorating air quality in Delhi-NCR, the Commission for Air Quality Management (CAQM) in...