In May 2024, the Environmental Protection Agency (EPA) lowered the primary annual National Ambient Air Quality Standards (NAAQS) for PM 2.5 [1] from 12.0 to 9.0 micrograms per cubic meter (μg/m 3). In ...
The Environmental Protection Agency’s emission factor resource, AP-42, is not your only option for developing particulate matter (PM) emission rates. Results of a prominent PM emissions measurement ...
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