Guwahati, April 4 -- An Assam-based environmentalist Apurba Ballav Goswami on Thursday sought the intervention of the Central Pollution Control Board (CPCB) over alleged hazardous effluent discharge from Numaligarh Refinery Limited (NRL) into the Dhansiri River in Golaghat district.

Concerning the severe ecological damage in Assam, Apurba Ballav Goswami in his letter to the CPCB member secretary stated the findings from a report by AGT Biosciences (OPC) Private Limited, which analyzed a water sample reportedly collected from the NRL's effluent plant on 11 March this year.

"The results reveal exceedances of CPCB effluent discharge standards for petroleum oil refineries under the Environment (Protection) Rules, 1986, and subsequent guidel...