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Chemical Week Magazine :: Regulatory

EPA Proposes Tighter Ozone Standards

1:23 PM MST | January 7, 2010 | Nancy Seewald

EPA has proposed strengthening its ground-level ozone standard by reducing the eight-hour level to 0.060-0.070 parts per million (ppm), its strictest to date, from 0.084 ppm set in March 2008. EPA, which is required to estimate costs and benefits for major rules, estimates costs of implementing the new standard at $19 billion-$90 billion. Health benefits resulting from the reduced limit are estimated at $13 billion-$100 billion, depending on the level of the final standard. EPA is also proposing to set a separate, seasonal standard to protect plants and trees...

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