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.