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Environmental Pollution
EPA expected to propose stricter ozone limits
EPA expected to propose stricter ozone limits

After years of inaction, the Obama administration is expected to propose tougher limits on smog Wednesday, according to people with knowledge of the rule-making effort. The new rule would be a major victory for public health groups, but it is sure to further stoke the partisan clashes between the president and Republicans poised to take control of Congress. The current limit for ground-level ozone, the lung-damaging gas in smog, is 75 parts per billion. Concluding that the limit is too weak to protect people's health, Environmental Protection Agency staff and its science advisors had recommended strengthening the federal standard to 60 to 70 parts per billion. The proposal that...

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