Casper Star-Tribune
May 8, 2008, Bob Moen

There isn't anything metropolitan about this tiny unincorporated town in southwest Wyoming, where a few single-family homes and a volunteer fire station stand against a skyline of snowcapped mountains. But Boulder, with a population of just 75 people, has one thing in common with major metropolitan areas: air pollution thick enough to pose health risks. "Used to be you could see horizon to horizon, crystal clear. Now you got this," said Craig Jensen as he gestured to a pale blue sky that he says is not as deeply colored as it used to be. "Makes you wonder what it's going to do to the grass, the trees and the birds." The pollution, largely from the region's booming natural gas industry, came in the form of ground-level ozone, which has exceeded healthy levels 11 times since January and caused Wyoming to issue its first ozone alerts. Now the ozone threatens to cost the industry and taxpayers millions of dollars to stay within federal clean-air laws...

http://www.trib.com/articles/2008/05/08/ap/us/d90he4d00.txt