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A little-known rule under the Clean Air Act (CAA) known as the “exceptional events rule” allows local regulators to exclude certain high-pollution days from their National Ambient Air Quality Standards (NAAQS) data reporting. “Exceptional Events are unusual or naturally occurring events that can affect air quality but are not reasonably controllable using techniques that tribal, […]
The EPA’s Office of Air Quality Planning and Standards recently issued guidance on how information on prescribed fires on wildland may be factored into exceptional events demonstrations required by Section 319(b) of the Clean Air Act (CAA). If the Agency accepts a state’s exceptional event demonstration, air pollution resulting from the event is excluded from […]
A panel of the U.S. Court of Appeals for the D.C. Circuit rejected challenges the Sierra Club mounted against procedures the EPA uses to approve plans states develop to monitor compliance with the National Ambient Air Quality Standards (NAAQS).
The air pollution in Fairbanks North Star Borough, Alaska (Fairbanks), is among the worst in the nation, and the EPA is doing nothing about it. That’s the view of several citizen groups that with the assistance of major U.S. environmental organizations are now suing the Agency for inaction for the third time in 2 years. […]
Six downwind northeastern states in the Ozone Transport Region (OTR) have filed suit in federal court asking that the EPA be ordered to take action on a December 2013 request that nine upwind states be added to the OTR. The designation would require that the added states develop plans to reduce the transport of pollutants […]
In a final action, the EPA has updated its 2011 Cross-State Air Pollution Rule (CSAPR) with respect to the 2008 ozone National Ambient Air Quality Standards (NAAQS). According to the Agency, the action constitutes the first time the EPA has updated an existing program to address interstate transport of air pollution under a new air […]
Two Clean Air Act (CAA) provisions governing deadlines for submission of state implementation plans (SIPs) to bring areas into attainment with the National Ambient Air Quality Standards (NAAQS) for particulate matter (PM) were at the core of a recent decision by a panel of the U.S. Court of Appeals for the D.C. Circuit.