Emission reductions targets for priority substances: calculation of emission reduction targets for target groups, based on environmental quality standards and emissions in 1995

Aims were subject to the conditions that harmonized methods and data to be used and, where possible, that the local situation be considered. Using the Dutch Government's definition of environmental quality objectives for priority substances in air, soil and surface waters, i.e. the limit and target concentrations, we calculated the corresponding emission levels and then compared these to present emissions. Subsequently, priority substances were ranked in terms of: i) emission reduction needed, ii) targeted sector and scale - number and location of emission sources - at which environmental quality was exceeded. If target concentrations in air, surface water and soil are to be met, large reduction of more than 50% on a national scale will be needed for PM₁₀, ethene, benzene, BaP, NO_x and fluoride to air; copper, nickel and zinc to water, and copper, cadmium an zinc to soil.