The U.S. Environmental Protection Agency (EPA) has filed a joint motion for a stay in litigation filed by the American Lung Association, National Parks Conservation Association and eleven states in an effort to settle the lawsuit which sought to force the agency to issue national ambient air quality standards (NAAQS) for particulate matter (PM). Am. Lung Ass’n v. EPA, No. 12-243 (D.D.C. joint motion filed 6/5/12).

As part of a proposed settlement, EPA would agree to issue final PM standards by December 14, 2012. During a May 31 hearing, the court ordered EPA to propose PM standards by June 7, but EPA requested additional time—to June 14—to comply with the court order. According to press reports, the court has granted that request. EPA missed an October 2011 statutory deadline to revise the standard. See BNA Daily Environment Report, June 7, 2012.