air quality study News
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EPA Study Finds Elevated Particulate Levels in Air on Train Platforms at Chicago Union Station
The U.S. Environmental Protection Agency today released an air quality study that documents elevated concentrations of particulate matter (PM2.5) in ambient air on train platforms at Union Station in Chicago. The concentration of PM2.5 in air on the train platforms was 23 - 96 percent higher than concentrations recorded on nearby streets on the days that monitoring was conducted last summer. The ...
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