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Dirty works

"Recommendations for Environmentally Sound Growth of Aluminium Industry in Orissa", a study by the State Pollution Control Board (SPCB), highlighted the pollution caused by the state's existing smelting and aluminium plants.

l Indian Aluminium Company (INDAL): The Hirakud plant emits 0.5million kg of fluorine every year. However, the SPCB admits not monitoring emissions fully due to inadequate technology. It says the emissions have contaminated shallow ground water resources and the soil.

l National Aluminium Company (NALCO): NALCO's Anugul smelter unit has been wrongly located in one of the 23 "hot spots' of pollution in the country. Unfortunately, due to improper environmental impact assessment (EIA), the plant has been set up in a region where the fluoride levels in the groundwater was already high. The industry emits some 0.22 million kg of fluorine annually, which ultimately finds its way to the area's surface and groundwater.

l TATA-INDAL and L&T: EIA studies are yet to be completed to choose safe locations for their sites.

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