March 14, 2008 8:00 AM, EDT

EPA Sets New Ozone Standard

The Environmental Protection Agency reduced its primary eight-hour ozone standard to 0.075 parts per million from 0.084 ppm to comply with the requirements of the Clean Air Act.

EPA estimates that the final standards will yield health benefits valued between $2 billion and $19 billion.

The tighter ozone standard will lead to higher costs throughout the economy with little or no health benefits to Americans, the National Association of Manufacturers said.