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...OZONE ALERT SATURDAY... The Oklahoma Department of Environmental Quality has issued an ozone alert for Saturday, for the Tulsa metropolitan area. An ozone alert means that conditions are favorable for the buildup of ozone near the ground, to an unhealthy level. When winds are light, the vapors from fuels such as gasoline, exhaust from engines, and air pollutants from industrial activities remain trapped near the ground. If sunshine is abundant when these air pollutants build up, a chemical process is triggered that results in the development of ozone near the ground during the afternoon and evening hours. While ozone in the upper levels of the atmosphere is beneficial in screening the suns radiation, it is harmful near the ground. Ozone can bother those with respiratory problems and can damage vegetation. A few simple measures can be taken to help keep the ozone levels from becoming unhealthy. During ozone alert days: ...