Chronic lung injury risk estimates for urban areas having ozone patterns similar to those in the Northeast
- Argonne National Lab., IL (United States)
- Environmental Protection Agency, Research Triangle Park, NC (United States). Office of Air Quality Planning and Standards
This paper describes the approach and result of an assessment of health risks associated with long-term exposure to ozone. The health endpoint of interest is the probability of formation of mild lesions in the centriacinar region of the lung among children living in New York City. The risk model incorporates an exposure model and a health model. The exposure model is preliminary results of the probabilistic NAAQS Exposure Model (P-NEM) for ozone, and the health model is the judgments of active researchers about the likelihood of formation of ozone-induced lesions in the human lung. Children and New York City were chosen as the population and city of interest because it is believed that children are more sensitive to ozone than any other group of people, and New York City is more representative of other urban areas than Los Angeles, the other city of which P-NEM exposure results are available. Risk results are presented for ten exposure distributions generated by P-NEM, two air quality scenarios ( as-is'' and attainment''), and two exposure periods (1 and 10 ozone seasons). The results vary across experts, are not very sensitive to variations in P-NEM exposure distributions, are lower for attainment conditions than as-is conditions, and are lower for 1 season of exposure than 10 seasons. Although these results are specific to children living in areas having exposure patterns similar to those found in the Northeast, they are fairly representative of results for outdoor workers in the Northeast and Southern California and for children in Southern California. The reason for this is that many experts believe that children and outdoor workers respond in a similar fashion to the given exposure patterns, or that exposure patterns in the Northeast and Southern California are similar. Some experts held both of these beliefs. These results should help policymakers evaluate alternative national ambient air quality standards for ozone. 4 refs., 9 figs., 3 tabs.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USEPA; Environmental Protection Agency, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5928520
- Report Number(s):
- ANL/CP-74664; CONF-911180-1; ON: DE92004718
- Resource Relation:
- Conference: Specialty conference on tropospheric ozone and the environment, Atlanta, GA (United States), 5-7 Nov 1991
- Country of Publication:
- United States
- Language:
- English
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Assessing the risk of chronic lung injury attributable to long-term ozone exposure
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Related Subjects
ENVIRONMENTAL EXPOSURE
MATHEMATICAL MODELS
HEALTH HAZARDS
OZONE
TOXICITY
RISK ASSESSMENT
AIR POLLUTION
AIR QUALITY
CHRONIC EXPOSURE
ECOLOGICAL CONCENTRATION
INHALATION
LUNGS
BODY
ENVIRONMENTAL QUALITY
HAZARDS
INTAKE
ORGANS
POLLUTION
RESPIRATORY SYSTEM
560300* - Chemicals Metabolism & Toxicology