An emergency action plan will be implemented from Monday to combat air pollution that has begun to show a trend towards poor category, the Central Pollution Control Board said. Under the emergency plan called Graded Response Action Plan (GRAP), stringent actions are implemented based on the air quality of the city.

If the air quality lies in moderate to poor category- measures like stopping garbage burning in landfills and other places, and enforcing all pollution control regulations in brick kilns and industries would be implemented, an official official said. If the air quality falls in the very poor category, additional measures of stopping use of diesel generator sets, enhancing parking fees 3-4 times and increasing frequency of metro and buses would be implemented, he added.