EPA proposes retaining current NAAQS for particulate matter

Green Car Congress
By mmillikinApr 15, 2020, 3:30 am299 pts
The US Environmental Protection Agency (EPA) is proposing to retain, without changes, the National Ambient Air Quality Standards (NAAQS) for particulate matter (PM) including both fine particles (PM2.5) and coarse particles (PM10). The Clean Air Act requires the EPA to set NAAQS for criteria…

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