ambient ozone Articles
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NSR Changes in the Phase 2 Final Rule to Implement 8-hour Ozone NAAQS
Introduction On November 29, 2005, Phase 2 of the final rule to implement the 8-hour Ozone National Ambient Air Quality Standard (NAAQS) was promulgated in the Federal Register (70 FR 71612). Among other issues, the final rule addresses reasonably available control technology (RACT) and reasonably available control measures (RACM), reasonable further progress (RFP), modeling and attainment ...
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Air pollution by ozone across Europe during summer 2012
Despite efforts to mitigate ozone pollution, the number of exceedances of EU ground-level ozone concentration standards for protecting human health (Directive 2008/50/EC) remained at serious levels during summer 2012 (1). In the summer of 2012, the threshold of 120 micrograms per cubic metre of air (ìg/m3) maximum daily eight-hour mean was exceeded on more than 25 days again across large ...
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Air quality model simulating photochemical formation of pollutants: the Sao Paulo Metropolitan Area, Brazil
The main sources of ozone precursors in the atmosphere of the Sao Paulo Metropolitan Area (SPMA) in Brazil are emissions from gasoline-, ethanol-, and diesel-powered vehicles. Ozone is a significant air quality problem in the SPMA. To come into compliance with the National Ambient Air quality Standard for Ozone, emission reduction policies must be established. An adequate emissions inventory and ...
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EPA Reviews National Ambient Air Quality Standards for Ozone, and Other Recent CAA Developments
EPA Reviews National Ambient Air Quality Standards For Ozone: On December 17, 2014, the U.S. Environmental Protection Agency (EPA) issued a proposed rule revising the air quality criteria for ozone (O3) and related photochemical oxidants and National Ambient Air Quality Standards (NAAQS) for O3. 79 Fed. Reg. 75234. EPA proposed to revise the primary standard to a level within the range of 0.065 ...
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Nanotech and Jobs: Congress Weighs In
The new Republication-led House of Representatives has expressed its concerns with what it refers to as the adverse impact of regulations on jobs and the economy. On February 10, 2011, this concern reached a new pitch. On this date, during a hearing on "Regulatory Impediments to Job Creation," the House Committee on Oversight and Government Reform released a preliminary staff report entitled ...
By Acta Group
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Nanotech and Jobs: Congress Weighs In
The new Republication-led House of Representatives has expressed its concerns with what it refers to as the adverse impact of regulations on jobs and the economy. On February 10, 2011, this concern reached a new pitch. On this date, during a hearing on "Regulatory Impediments to Job Creation," the House Committee on Oversight and Government Reform released a preliminary staff report entitled ...
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Return of the clean air interstate rule—The court does CAIR
In summer 2008, the U.S. Court of Appeals for the D.C. Circuit issued a dramatic decision to vacate the Clean Air Interstate Rule (CAIR) in its entirety (North Carolina v. EPA, No. 05-1244, D.C. Cir., July 11, 2008). Following a petition for rehearing, it seems the previous vacatur was just a temporary detour, as the Court reinstated CAIR on December 22, 2008. The reinstatement appears to turn ...
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