EPA Said to Tighten Soot Rules That Industry Fought
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The U.S. tightened standards for soot pollution by 20 percent, a move that health groups said would curb heart attacks and asthma.
In the first major environmental regulation since the re-election of President Barack Obama, the EPA rejected requests from industry groups that sought to weaken or delay the proposed changes. Public-health advocates say soot, called fine particulate matter, is among the deadliest contaminants, and pressed the agency in court to issue these rules.