U.S. EPA has published notice of a proposed consent decree with WildEarth Guardians and San Juan Citizens Alliance filed in the United States District Court for the District of Columbia under citizen suit provisions of the Clean Air Act (WildEarth Guardians, et al. v. Jackson, No. 1:09– CV–00089–CKK). Among other things, if approved it would require EPA to address the need for new source performance standards (NSPS) and national emission standards for hazardous air pollutants (NESHAP) for the Oil and Natural Gas production source category.
You can get a copy of the proposed decree here (EPA–HQ–OGC–2009–0918).