Kolkata: Kalyan Rudra, chairman of West Bengal Pollution Control Board (WBPCB) said on Tuesday that the permissible levels of particulate matter is reasonably high, contributing to poor air quality in Durgapur.”The main reasons for this are not just industries, but also automobile emissions and construction sites,” Rudra said, speaking at a discussion forum on “Ecological Sustainability in the Industrial Region” in Durgapur, jointly organised by WBPCB and Bengal Chamber of Commerce and Industry (BCCI). Also Read – Rain batters Kolkata, cripples normal lifeThe WBPCB chairman said that analysis of data about air quality of almost all cities of the nation has revealed that air quality deteriorates specifically in winter. He maintained that the WBPCB has not achieved the prescribed standards and admitted that they have much work to do.”As far as water pollution is concerned, the earlier belief of controlling the water flowing into the river has now undergone transformation as letting water flow into rivers is needed. Damodar looks like a desert. We need to harmonise how much water can be restricted and allowed to flow into the rivers,” Rudra said. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedThe WBPCB chairman further raised concerns over plastic pollution. “India produces 26,000 tonnes of plastic daily, which is not properly disposed. Modern life makes use of plastic necessary but it should be bio-degradable,” he added.It may be mentioned that Durgapur, which has been recognised as one of the biggest industrial zones of Eastern India, has been listed as one of the six most polluted industrial cities of India.”We are making a continuous endeavour to focus on sustainable development and to disseminate information and educate business, industry and society about the need for balancing industrial growth with ecological stability,” said Aloke Mookherjea, former president of BCCI.Dilip Kumar Agasty, Mayor of Durgapur Municipal Corporation, also spoke at the programme.