Quality - Ozone
Non-Attainment, and Near Non-Attainment for Ozone standards
Rationale for use of indicator
This is one of several indicators
that provide a view of environmental concerns in a specific county. Ozone is an
indirect pollutant. A natural form of oxygen, it becomes a component of smog when
combined with other substances in the air. Ozone pollution is produced when volatile
organic compounds in the air, such as gasoline vapors, oil refinery leaks, car
emissions, dry cleaning fumes, and paint fumes, react with nitrogen oxides and
sunlight. Non-attainment and near non-attainment counties are those designated
as such under the Texas Natural Resource Conservation Commission's State Implementation
Plan. Attainment counties are all others.
Ozone in the
air reacts with lung tissue and can cause breathing problems. The risk of asthma
may be increased and people may cough and have chest pains. "Responders" (persons
especially sensitive to ozone), people with pre-existing respiratory diseases
(asthma, emphysema, bronchitis, pneumonia, and colds), and people who exercise
outdoors are particularly vulnerable to the effects of ozone.
Texas Environmental Almanac, Texas Center for Policy Studies, Austin
Children at Risk. The indicators. [Online: http://www.childrenatrisk.org/the_indicators.html
] July 1999.
USDHHS.Healthy people 2000: national health promotion and disease
prevention objectives: full report, with commentary. Washington, D.C.: U.S. Dept.
of Health and Human Services, Public Health Service; 1991. Report No.: DHHS publication
no. (PHS) 91-50212.