Centre has released a new four-colour classification scheme for industries based on their pollution potential and exempted over 30 industries that have zero-pollution load from taking environmental clearance. Under the new categorisation system, industries which pollute the most have been put in the red category while the moderately polluting units are classified orange. Industries that have a significantly low pollution load have been placed in the green category while those that operate without causing any pollution have been categorised as white.<br/><br/>Environment Minister Prakash Javadekar yesterday released new categorisation system in New Delhi and termed it a landmark decision which gives a fair picture of the industries. He said the new system is based on an elaborate scientific exercise. <br/><br/>According to an official release, 60 industries including sugar, thermal power plants, paints and others, which have a high pollution index will be in the red category. 83 industries like coal, washeries and automobile servicing which have medium scores will be in the orange category.