Sublette County is home to two of Wyoming’s major oil and gas fields … and emissions from the energy production have caused smog to form – a type of smog called ozone. Ground-level ozone can cause and exacerbate respiratory problems. It’s also a problem for legal reasons: ozone levels in Sublette County have exceeded federal limits several times in the past few years. Now, the Environmental Protection Agency is stepping in. It’s designating Sublette County a “nonattainment area,” which means Wyoming is obligated to fix the problem. But as Wyoming Public Radio’s Willow Belden reports, there’s no ready solution