EPA proposes updates to annual PM2.5 national air quality standard
Green Car Congress
JUNE 15, 2012
Source: EPA. The US Environmental Protection Agency (EPA) proposed updates to its national ambient air quality standards (NAAQS) for harmful fine particle pollution (PM 2.5 ). EPA’s proposal would strengthen the annual health standard for PM 2.5 EPA is proposing two options for this 24?hour Click to enlarge.
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