Judgement of the National Green Tribunal in the matter of Biswanath Mondal Vs State of West Bengal Others dated 21/08/2013 regarding fixation of lower noise level impulse at 90 dB(A) at 5 meters from source for manufacturing and sale of firecrackers instead at 125 dB(A) at 4 meters from source which is prescribed by the Ministry of Environment & Forests (MoEF) vide Notification dated 05.10.1999.