Substances harmful to the ozone layer
The presence of substances harmful to the ozone layer is entirely attributable to liquid refrigerants used in air conditioning plants, which are equipped with closed circuits. Except for accidental and unforeseeable leaks of these substances, there were no free releases in the atmosphere that could be correlated with production activities.

SO2 Emissions

Direct emissions of SO2 stemming from the combustion of diesel and fuel oil was estimated to be about 150 tonnes in 2009.