Order of the National Green Tribunal in the matter of Varun Seth & Ors. Vs. Police Commissioner, Delhi & Others dated 09/05/2017 regarding noise level mapping in Delhi. NCT Delhi and Central Pollution Control Board shall submit a Status Report in regard to the Noise Level Mapping of the identified sites, including that Connaught Place, at the time of demonstrations. The said mapping shall be done when demonstration are going on and when the demonstration are not being done in that area. They shall also identify alternative sites to the present one for holding of demonstration, in the interest of prevention and control of noise pollution and larger public interest to avoid noise and traffic congestion, resulting in air pollution.