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PM2.5


Particulate Matter Should Be Focus of Air Emissions Regulations

Residents of Texas living downwind of coal-fired power plants would be far better off today if regulators had focused on cutting particle-forming SO2 emissions rather than concentrating so keenly on…


IEA: World’s Power Sector Trails Others in Air Emissions

The world's power sector last year emitted a third of global sulfur dioxide (SO2) emissions, 14% of nitrogen oxides (NOx), and 5% of total particulate emissions (PM2.5), but those emission…


The Need for Alternate PM2.5 Emission Factors for Gas-Fired Combustion Units

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 research program for…


Federal Court Hands EPA Legal Victory on Fine Particulate Matter

A three-judge panel of the U.S. Court of Appeals for the District of Columbia last week upheld the Environmental Protection Agency's (EPA's) primary National Ambient Air Quality Standards (NAAQS) for…