EPA's proposed new ozone limits may be unworkable, House panel told

The US Environmental Protection Agency's possible reduction in allowable ground level ozone concentrations to 60 parts per billion potentially could trigger sanctions against states that fail to meet them without adequately considering naturally occurring sources, witnesses told a US House Science, Space, and Technology Committee subcommittee. "Surprisingly high ozone values have been measured at rural monitors in Utah and even within national parks," Amanda Smith, executive director of Utah's Department of Environmental Quality, said in a June 12 hearing before the Environment Subcommittee. "Similar high values have been seen throughout the Intermountain West." Ground...

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