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The main point of the article was that EPA researchers input portable air sensors that monitor levels of particulate matter and nitrogen oxide- pollutants that cause short and long-term health effects and are regulated under Clean Air Act. The goal was to get good on-the-ground air quality data for our environmental justice community. Data that is collected, understood, and used by those being directly impacted by the pollution. This was supported by the input of EPA air sensors installed into the communities.