Environmentalists Call On EPA To Tighten Regional Haze Air Regulations

The environmentalist group National Parks Conservation Association (NPCA) is calling on EPA to revise and tighten its regional haze emissions regulations, in order to clarify and strengthen what the group says are ambiguous agency criteria for assessing the merits of state plans to comply with regional haze reduction mandates. In a July report titled "Polluted Parks," NPCA ranks the country's national parks and wilderness areas according to the levels of air pollution they suffer, finding that many endure pollution that...