Helsinki Region Environmental Services (HSY) collects hazardous waste in Espoo, Helsinki, Kirkkonummi and Vantaa. The material includes hazardous waste collection points. Hazardous waste from households is accepted at...

Monitoring site data includes permanent monitoring sites, mobile monitoring sites and passive samplers, as well as the annual average concentrations (μg/m3) of nitrogen dioxide (NO2) measured at these sites in...