21 Overview of impacts covered 1 Air pollutants : detailed assessment and valuation for Public Health : dominant impact category, shows the importance of impacts from particles, aerosols and other pollutants on public health, for some quantification remains uncertain Agriculture : not controversial but not complete (valuable crops) Materials : not complete, (soiling, stock at risk, historic buildings)  Ozone impacts : hard to model, big difference between marginal and aggregated analysis (for NOx for Belgium )  Ecological impacts : impacts on critical loads can be quantified, but impacts hard be monetise and data transfer
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