EPA Proposes Lowering Limit for Small Particle Pollution
The EPA estimates that, based on recent monitoring information, 112 counties across the U.S. would not meet the proposed 9-10 μg/m3 standard. | EPA
Jan 8, 2023
EPA wants to cut the annual levels of PM2.5 ― the very small particles of soot produced by fossil fuel combustion ― by as much as 25% from the current standard.
