The pollution level in the national capital is feared to increase by two times by 2005 if no remedial measures are taken, State Minister for Urban Development Bandaru Dattatreya said today.During 1991, the pollution level was estimated at about 2.49 lakh tonne and is feared to increase to 4.35 lakh tonne by 2005 if no remedial measures are taken, he said in a written reply in Lok Sabha.