Ozone lowers resistance to colds and pneumonia and causes irritation to the nose, throat and lungs. Emissions from motor vehicles, gas-powered garden equipment and motor boats, gasoline and paint vapors, aerosol products and industry all significantly contribute to the formation of ozone. This deadly, colorless, odorless gas can cause dizziness, nausea, blurred vision, headaches, slowed reflexes and drowsiness. Cars and trucks produce up to 90 percent of urban carbon monoxide emissions. Carbon monoxide levels are higher in the winter, especially during air stagnation periods.
Asbestos is a hazardous air pollutant and known human carcinogen.
There is no known safe level of exposure. Remodeling and demolition projects are likely to disturb asbestos and can pose a health threat if not handled properly. Nonattainment Areas Oregon has identified certain areas with persistent air quality problems that have been designated by EPA as nonattainment areas for specific pollutants. This means that the areas have had unhealthful air and are required to have more stringent, expensive controls on industry. All but one of the nonattainment areas now appear to be meeting air quality standards.