The National Green Tribunal has sought the stand of the ministry of environment and forest (MoEF) on a plea to ban setting up of new industrial units in "critically polluted" Noida till its environment quality is improved through a "remedial action plan". A bench of justices A Suryanarayan Naidu and GK Pandey has also issued notices to pollution control boards of Uttar Pradesh and the Centre, besides the UP State Industrial Development Corporation, and sought their responses by February 23.