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EPA initiates new review of the Ozone National Ambient Air Quality Standards

Green Car Congress

The Environmental Protection Agency (EPA) announced a new review of the Ozone National Ambient Air Quality Standards (NAAQS). EPA established the current standards at a level of 70 parts per billion in 2015 and retained them in 2020, after concluding that there was little new information to suggest the need for revision.

Ozone 150
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EPA proposes maintaining current NOx standards

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Based on its review of scientific evidence, the US Environmental Protection Agency (EPA) proposes retaining the current national ambient air quality standards (NAAQS) for oxides of nitrogen (NO x ). There are currently two primary standards for NO x. The last review of the primary NO 2 NAAQS was in 2010. nitrates).

EPA 170
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10-year study shows how air pollution fosters heart disease; accelerated plaque build-up in arteries

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Long-term exposure to particulate air pollution has been linked to an increased risk of heart disease, but the biological process has not been understood. Repeated scans were done for nearly all participants between 2002 and 2005; for a subset of participants between 2005 and 2007; and for half of all participants between 2010 and 2012.

Pollution 199
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Study: US counties with higher PM2.5 concentrations have more stroke deaths

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Analyzing health data and pollution monitoring information from 1,561 counties across the United States between 2005 and 2010, researchers found the yearly average for fine air pollution ranged from 7.2 The higher the poverty rate and fewer health providers in a county, the greater the health impact of high pollution.

Pollution 207
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Navistar to adopt SCR technology to meet 2010 EPA requirements; “In-Cylinder Technology Plus (ICT+)”

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Unlike its competitors in the heavy-duty on-road space, Navistar relied on advanced EGR technology for 2010 compliance instead of SCR. However, EPA 2010 regulations call for 0.20 EPA also had established an “averaging, banking and trading program” for engine credits as another way to meet emission standards besides payment of NCPs.

EPA 231
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California ARB to Hold Public Workshop on LEV III Technologies; Criteria Pollutants and Greenhouse Gas Emissions

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ARB will hold a one-day workshop to discuss ARB staff’s preliminary thoughts and sources of information upon which to base the proposed standards and test procedures on 18 May, 2010, in El Monte, California. ITS-Davis, 2010. These standards will cover AC “indirect” emissions (e.g., EDAG, 2009. Volkswagen, 2008.

Pollution 186
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EPA issues final air quality permits to Shell for Arctic oil and gas exploration; fleet emissions reduced 50+% from 2010 permits

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Shell’s exploration drilling fleet will emit more than 250 tons of air pollutants a year and therefore, under existing law, must have federal Clean Air Act Outer Continental Shelf (OCS)/Prevention of Significant Deterioration (PSD) permits. The permits set limits on air pollution from these vessels.

EPA 186