Air-quality standards. EPA adjusts a smog standard to White House preference.
Stokstad
Erik
E
D000393:Air Pollutants / Q000592:standards*; D000397:Air Pollution / Q000331:legislation & jurisprudence*; D033161:Government Regulation; D008452:Maximum Allowable Concentration; D010126:Ozone; D012905:Smog; D014481:United States; D014484:United States Environmental Protection Agency / Q000331:legislation & jurisprudence*
D000393:Air Pollutants; D012905:Smog; D010126:Ozone