The document discusses the Graded Response Action Plan (GRAP) implemented in the Delhi-NCR region to combat air pollution. It provides questions and answers about GRAP. The Ministry of Environment, Forest and Climate Change notified GRAP. The Central Pollution Control Board prepares the comprehensive GRAP plan. GRAP defines emergency measures based on levels of PM2.5 and PM10 over 2 days. It will be enforced under the Environment Protection Act, 1986.