EPA proposes retaining current NAAQS for particulate matter
Green Car Congress
APRIL 15, 2020
The current annual standard has been in place since 2012. concentrations in the US fell by 39% between 2000 and 2018 while average PM 10 concentrations fell by 31% during the same period. The annual fine particle standard is designed to protect against health effects associated with both long- and short- term exposure to PM 2.5.
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