The U.S. Environmental Protection Agency has asked the U.S. Court of Appeals for the District of Columbia Circuit to lift a stay on the cross-state air-pollution regulation and delay compliance deadlines by three years.
The U.S. Supreme Court on April 29 upheld EPA's authority to issue the rule, which requires several states and the district to develop plans to curb air pollutants that travel downwind to other states. The rule is significant for engineering and construction firms that help states develop implemen- tation plans and utilities install pollution-control equipment.