AURORA — New air pollution rules for Colorado's oil and gas industry have gone up for public comment.
The state Air Quality Control Commission opened at least four days of public testimony Wednesday on a sweeping proposal to force new air-pollution limits on oil and gas producers.
The changes include the nation's first statewide methane-emissions standard for energy producers, as well as new infrared monitors on drilling sites and storage tanks.
State regulators who proposed the rules say they would dramatically improve air quality. Several large energy producers have signed on to the plan.
The state has put the tab for industry compliance to the stricter air rules at about $40 million a year.
Supporters outnumbered opponents on the first day.