|
What is Ozone?  Ozone is a form of oxygen comprised of three oxygen atoms, while most gaseous oxygen just has two. It is a photochemical oxidant and, at ground level, is the main component of smog. Ozone is not emitted directly into the air by any one pollution source, but is formed through chemical reactions between natural and man-made emissions of volatile organic compounds (VOCs) and nitrogen oxides (NOx) in the presence of sunlight. These gaseous compounds mix in the air, and when they interact with sunlight, ozone is formed. Sources of VOC and NOx pollutants include automobiles, gas-powered enginesrefineries, chemical manufacturing plants, solvents used in dry cleaners and paint shops, and wherever natural gas, gasoline, diesel fuel, kerosene, and oil are used as fuel.
...More
Why is there a Difference? 
The ozone layer in the upper atmosphere is considered good ozone because it filters harmful ultraviolet radiation from the sun and reduces the amount that reaches the earth's surface. On the other hand, high collections of ozone in the air we breathe can be harmful to people, animals, crops, and many common materials. This ground-level ozone is the air pollutant of most concern in Texas and the nation. ...More
How can I help? 
The Texas Commission on Environmental Quality forecasts days when ozone levels are likely to be high. People are encourages to take voluntary action on those days to prevent exceeding the National Ambient Air Quality Standards for ozone.
Since automobiles are one of the main culprits in ozone formation in the San Antonio region, we should try to limit our driving during Air Quality Health Alerts. Actions like carpooling, riding the bus, riding a bicycle, and trip chaining add up to less pollution. ...More 
|
|
|
Natural Resources Outreach
Brenda Williams Projects Manager Alamo Area Council of Governments 8700 Tesoro Drive, Suite 700 San Antonio, TX 78217 (210) 362-5200 |
|
