• Jan 21, 2021 Maeve Conran/KGNU Colorado’s Northern Front Range has been out of compliance with federal ozone standards since 2012. The Environmental Protection Agency is preparing to downgrade the region’s ozone status from “serious” to “severe.” Better air monitoring in some cities shows that emissions from the oil industry is contributing to bad air quality. One researcher has been shining a light on it. It's made him a target of the industry.