On January 15, 2013, the Environmental Protection Agency (EPA) published a final rule revising the National Ambient Air Quality Standard (NAAQS) for particulate matter (PM). The revised air quality standards were completed pursuant to the Clean Air Act (CAA) and, in part, in response to a court order and consent agreement. Based on its review of scientific studies available since the agency's previous review in 2006, EPA determined that evidence continued to show associations between particulates in ambient air and numerous significant health problems, including aggravated asthma, chronic...

As a result of enforcement actions and settlements for noncompliance with federal pollution control requirements, the U.S. Environmental Protection Agency (EPA) reported that, during FY2013, regulated entities committed to invest an estimated $7.0 billion for judicially mandated actions and equipment to control pollution (injunctive relief), and $22.0 million for implementing mutually agreed-upon (supplemental) environmentally beneficial projects. EPA estimated that these compliance/enforcement efforts achieved commitments to reduce or eliminate 1.3 billion pounds of pollutants in the...