Ozone is also responsible for several billion dollars of agricultural crop yield loss in the U.S. each year. Ozone also damages forest ecosystems in California and the eastern U.S. Click here for more information on the health effects of ozone.
In 1997, the EPA promulgated a new ozone national ambient air quality standard of 0.08 ppm (8 hour averaging time). Click here for more information about the new ozone standard.