What is the Graded Response Action Plan?

• The GRAP is a step-by-step plan to counter Delhi-NCR region’s deteriorating air quality.
• It was formulated by the Environmental Pollution Prevention and Control Authority (EPCA) jointly with the Delhi government in 2017.
• The plan is incremental and adaptable, which means the preventive measures will be updated and escalated according to changes in the AQI.

Stages in GRAP

• 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 and metro frequency.
• Stage 3- “severe” AQI of 401-450
  • Under this stage, the government imposes a strict ban on construction and demolition activities, hot mix plants, brick kilns, and stone crushers.
• Stage 4- “severe plus” AQI of more than 450
  • This stage ensures the stopping of trucks in Delhi except for LNG/CNG trucks and those involved in essential services. It also imposes a ban on Delhi-registered diesel-operated Medium Goods Vehicles (MGVs) and Heavy Goods Vehicles (HGVs)

Why in news?

• CAQM has revoked the ban on construction work in Delhi NCR region.