Summary:
They have also asked the minister to give them time and subsidy for shifting to PNG. The members also informed the minister that the cost of conversion of boilers from other fuel to PNG would cost them a huge. "For example, if a boiler's size is 70 tonnes, its conversion cost to PNG (depending on availability) will be approximately Rs 4 crore, whereas for the same boiler the coal cost will be around Rs 1 crore," he explained. Around 230 units have been placed under the red category the highest level for those causing maximum pollution. Less than 100 industries have been placed under the green category which is these industries are not contributing to polluting city's air..