Particulate matter (PM)

PM-2.5 Report Is Flawed, Science Committee Concludes

A 1,880-page draft report on the risk particulate matter (PM) imposes on human health may undergo extensive revisions because the EPA’s powerful Clean Air Scientific Advisory Committee (CASAC) has concluded that the methods used by the authors of the report are flawed and that the authors’ estimated impact PM has on mortality is overstated.

air emissions, pollution

EPA Issues Implementation Requirements for 2015 Ozone NAAQS

After grumbling that it intended to resist implementing the revised National Ambient Air Quality Standards (NAAQS) for ozone it issued in 2015, in August 2018, the EPA informed a federal court that it had decided to uphold and defend the NAAQS as they had been promulgated. That decision set in motion the Agency’s responsibility to […]

Additional Good Neighbor Requirements Unnecessary, Says EPA

Based on “additional information and analysis,” the EPA is proposing to determine that its Cross-State Air Pollution Rule (CSAPR) Update for the 2008 ozone National Ambient Air Quality Standards (NAAQS) (October 26, 2016, Federal Register (FR)) satisfies the Agency’s obligation to issue federal implementation plans (FIPs) for 20 states to address air pollution from those […]

Air pollution

EPA Ordered to Issue Good Neighbor FIPs

A federal district court judge gave the EPA 6 months to promulgate—and post on the Web—final federal implementation plans (FIPs) for five upwind states that are contributing significantly to nonattainment of the 2008 National Ambient Air Quality Standards (NAAQS) for ozone in Connecticut and New York State, both downwind states.

Principles for NAAQS Reviews Clarified by Pruitt

The EPA only recently issued almost all the remaining area designations for the 2015 National Ambient Air Quality Standards (NAAQS) for ozone (only eight counties in the San Antonio, Texas, area have not been designated). Now, with the ink barely dry on those designations, the Agency is facing yet another Clean Air Act (CAA) deadline […]

Groups Sue to Force Action on Fairbanks’ Air

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. […]