The goal of the Clean Air Act’s visibility program is to achieve natural visibility conditions by 2064 in federal Class I areas (basically, national parks). States must show that they are making “reasonable progress” towards...more
In 2002, EPA promulgated a Clean Air Act new source review (NSR) “reform rule” to clarify the confusion created by inconsistent guidance and judicial decisions on NSR applicability. That clarification effort had only limited...more