Denver ? Facing federal pressure over worsening air pollution, a state air quality commission on Sunday approved its first-ever statewide emissions controls on the booming oil and gas industry.

The Colorado Air Quality Control Commission said new rules would reduce emissions by 68 percent from tanks that collect oil, liquefied natural gas and other byproducts. The rules would take effect in May if the Legislature approves them.

The commission would conduct yearly reviews of the emissions levels when the tanks are vented, and of the health effects of the industry.