We take dust samples in the immediate residential area. Together with independent research organisation TNO, we analyse the origin of these samples. This gives us a clear idea of our share in it. We will continue to carry out these analyses in the coming years. It is an effective means to reduce dust deposition.
Odour load is defined as: the number of hours that local residents may experience odour as unpleasant. Independent measurement agencies carry out measurements of sources of odour on our site. These data are fed into a dispersal model, which we also use to report to the Environmental Agency for the North Sea Canal area. We carry out new measurements and calculations every year. The results are compared to data from the past ten years.
We report the emissions of heavy metals, particulate matter and nitrogen oxides annually in the Electronic Environmental Annual Report (eMJV). This is assessed by the Environment Agency. The most recent eMJV value is used to monitor changes compared to the starting situation in 2019.
PAHs are Polycyclic Aromatic Hydrocarbons. To measure them accurately, we suck in air at an emission point. That air is passed through a tube where the PAHs bind to a 'carrier'. We then separate the PAHs from the carrier in a laboratory. This way, we determine the concentrations of the 16 individual PAH substances using a technique called gas chromatography mass spectrometry. An independent measuring agency carries out both the collection and analysis according to prescribed standards.