LALIT K JHA WASHINGTON/NEW DELHI Union Carbide plant paid US $470 million in damages for the deadly gas leak from the plant in Bhopal on December 3, 1984 US legislators have asked Dow Chemical to clean up the soil and underground water contaminated by the deadly gas leak at the Union Carbide plant at Bhopal but the US firm disowned the liabilities saying that it had never owned or operated the disgraced plant site As many as 27 legislators have requested the Dow Chemical Company to meet the demands of the survivors of the Bhopal gas tragedy for medical and economic rehabilitation