File provides a forecast of the air quality for particulate matter around national, provincial and municipal roads in Gelderland in the year 2030. The data is calculated nationwide using the Monitoring Tool. Per road section, the prognosis for the concentration of PM10 at 10 metres from the edge of the road is indicated. Air quality is represented in five concentration classes. Following the standards, the annual average concentration shall not exceed 40 µg/m³. The World Health Organisation (WHO) recommends 20 µg/m³ as a standard according to the latest scientific insights. In addition, a standard applies to the daily average concentration of 50 µg/m³. The daily average concentration standard may be exceeded up to 35 times per year. The legend shows the average annual concentration of PM10. Air quality is calculated, among other things, on the basis of forecasting traffic intensities and using calculation models based on the year 2017. The sources, such as industry and agriculture, have been incorporated into the background concentration. The total concentration also includes the direct contribution from road traffic. The values calculated with the model have an inaccuracy of 20-25 percent.
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