PCDD/Fs Emissions inventory in the Lombardy Region: results and uncertainties

The results of an assessment study of both industrial and non-industrial dioxin and furan (PCDD/Fs) emissions in the Lombardy Region (Italy) are outlined below. The main data sources, refer to 1997, and are compiled from the Lombardy Emissions Inventory, (developed under the framework of the Regional Air Quality Plan), together with documented emissions levels. Due to the uncertain nature of the emissions assessment, results are provided as a most probable value within a given range Total PCCDD/Fs emissions in Lombardy can reach (OR average) 33 g I-TEQ y-1, ranging from min. 24 g I-TEQ y-1 to max. 88 g I-TEQ y-1. The main PCDD/Fs sources are municipal and hospital solid waste incineration, electric arc furnace for steel production, vehicle diesel combustion and residential wood combustion. Incineration emission levels are expected to decrease over the period 2005-2010, in compliance with legal requirements. This will prioritize control over the remaining main PCDD/Fs contributors. Due to the limited information available concerning this data, the accuracy of which is uncertain, further research is needed to evaluate the future role of these sources.