Scrubbing emissions. EPA toughens rules on incinerators; many may close.
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D000397:Air Pollution / Q000517:prevention & control; D017745:Incineration / Q000331:legislation & jurisprudence* / Q000592:standards; D008421:Materials Management, Hospital / Q000331:legislation & jurisprudence*; D014481:United States; D014484:United States Environmental Protection Agency