Bloomberg News

Wyoming Area Found With Unsafe Ozone Level as Gas Drilling Booms

May 01, 2012

Wyoming’s southwestern region was found to have an unsafe level of smog-causing ozone, a designation the U.S. Environmental Protection Agency linked to a boom in oil and gas drilling in the state.

The EPA included the Upper Green River Basin in its list of areas nationwide exceeding an ozone standard set in 2008 during the administration of President George W. Bush. Wyoming until today was the only state where all counties had met the federal ozone limit.

“It’s undoubtedly the oil and gas drilling going on out there,” John Walke, clean-air director for the New York-based Natural Resources Defense Council, said in an interview. Walke criticized President Barack Obama for throwing out a proposal by the EPA to lower that ozone standard.

Ozone, a precursor to smog, is caused by emissions from vehicle traffic, industrial activities or related projects such as road construction. Gas escaping from wells or pipelines contains volatile organic compounds, which also can cause smog.

Breathing air containing high levels of ozone can reduce lung function and increase respiratory symptoms, aggravating asthma or other respiratory conditions, according to the EPA.

With the official designation of “non-attainment” for the U.S. ozone standard of less than 75 parts per billion, a state or locality must develop a plan to cut its pollution.

To contact the reporters on this story: Mark Drajem in Washington at mdrajem@bloomberg.net and;

To contact the editor responsible for this story: Jon Morgan at jmorgan97@bloomberg.net


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