Square Mile school sees nitrogen dioxide reduction Will Date Nitrogen dioxide air pollution at Sir John Cass’s Foundation Primary School in the Square Mile has fallen below the legal annual limit for the first time since monitoring began in 2003, the City of London Corporation has said. The data, gathered by the City of London and verified by King’s College London, shows that levels of NO2 were below annual limits in 2017. Levels of particles of PM10 and PM2.5 continue to be below government limits the local authority has stated. Sir John Cass School is located in the Square Mile. Air quality monitoring has taken place at the school since 2003. (source: London.gov.uk ) Monitoring began at the school in Aldgate in 2003 with the installation of a 24-hour air quality monitoring station in the playground, which includes an API M200E NOx analyser, and a Met One 1020 for particulate matter analysis. Policies brought in to improve air quality at the school have included...
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