Catching up on news from last week, the U.S. Environmental Protection Agency has released new standards for ground-level ozone that will reduce the incidence and severity of various respiratory diseases. Click here for details on the standards.
Ground level or “bad” ozone is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight. Emissions from industrial facilities and electric utilities, motor vehicle exhaust, gasoline vapors, and chemical solvents are some of the major sources of NOx and VOC. Breathing ozone can trigger a variety of health problems, particularly for children, the elderly, and people of all ages who have lung diseases such as asthma. Ground level ozone can also have harmful effects on sensitive vegetation and ecosystems.
Current regulations allow ozone at 75 parts per billion. The new rules would lower that to a level between 65 and 70 parts per billion. Mark Drajem reported for Bloomberg News, “The EPA’s independent science advisers this year recommended the administration set the standard at 60 to 70 parts per billion, and urged the agency to consider the lower end of that range.”
After the jump I’ve posted the EPA’s press release and excerpts from a commentary by EPA Administrator Gina McCarthy, along with some reaction by critics of the proposal. Predictably, some business groups say the new standards will be devastating for the economy. McCarthy pointed out that same dire warnings have accompanied every new environmental regulation for decades.
The Iowa Association for Business and Industry is concerned that the EPA proposal may be expensive for manufacturers. Data collected between 2011 and 2013 at various monitoring sites around Iowa indicate that ground-level ozone is already below 70 parts per billion at all tested locations. Some of the Iowa sites recorded levels below 65 parts per billion; others are slightly above that level. The EPA does not anticipate that any counties in Iowa will violate the new ozone standard by 2025. Counties with the worst smog problems, including many in California, will be given more time to comply with the new ozone standards.