Federal officials have agreed to review air pollution standards for oil and gas operations to decide if they need to be updated.
The proposed settlement of a complaint by two environmental groups calls for the Environmental Protection Agency to start the review in January 2011. The settlement needs court approval.
WildEarth Guardians and the San Juan Citizens Alliance filed a complaint in January saying the EPA hasn't updated air quality standards for oil and gas development despite increased activity. The groups also want the EPA to set standards for pollutants not currently regulated, including greenhouse gases.
The Denver-based Independent Petroleum Association of Mountain States, a trade group, says the industry has worked hard to reduce its emissions.