“The response from the states is positive and short-term preventive measures have been adopted, including stopping and burning of bio-waste, upgrading pollution under control (PUC) systems, checking overloaded goods vehicles and strict monitoring of polluting industries,” a statement said. According to the status report from Delhi, the government had worked towards improving PUC system to make it tamper-proof and was working on a way to monitor it online in real time. The government has also received 559 complaints of leaf burning through a special toll-free helpline. The East Delhi Municipal Corporation, in its status report to the ministry, also said that while sanctioning building plans, erection of screen walls around construction sites would be made mandatory.