Hyderabad, July 6: Non-governmental organisations have demanded that government should obtain environmental clearance from the centre before taking the up metro rail project in Hyderabad. They said noise pollution would be much more throughout the day even at the silent zones such as schools and hospitals. According to them, the metro rail will cause more than permissible level of noise in city. The voluntary organisation "Concerned Citizen" on Sunday organised a debate on the subject in which both the representatives of NGOs and officials of Metro rail projects participated. Former DGP and TD senior leader Mr K.Vijaya Rama Rao and Dr C.Rama Chandraiah, convenor of a better public transport in Hyderabad and Mrs Jaswin Jairath leader of Concerned Citizens who have been opposing the project demanded the officials to take up the project in a transparent way. "The project will not solve the traffic problem but it is sure to deface the city and destroy historical monuments," they criticised. Hyderabad Metro Rail Project managing director Mr NVS Reddy and retired general manager of South Central Railway Stanli Babu tried to explain them that almost all the countries were opting metro rail to find out a solution to traffic problems. "The rapid urbanisation will lead to chaotic traffic conditions in Hyderabad in the future. It is the responsibility of the government to provide proper public transport system to meet the growing demands of the public in Hyderabad," said Mr NVS Reddy. He said the environmental clearance was not required to the project. "The issue has been discussed and the government has given exemption in this regard," he explained.