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Daily Mortality and Air Pollution in Santa Clara County, California: 1989-1996

David Fairley
Environmental Health Perspectives
Vol. 107, No. 8 (Aug., 1999), pp. 637-641
DOI: 10.2307/3434455
Stable URL: http://www.jstor.org/stable/3434455
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Daily Mortality and Air Pollution in Santa Clara County, California: 1989-1996
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Abstract

Since the last revision of the national particulate standards, there has been a profusion of epidemiologic research showing associations between particulates and health effects-mortality in particular. Supported by this research, the U.S. Environmental Protection Agency promulgated a national standard for particulate matter ≤ 2.5 μm in aerodynamic diameter ( PM2.5). Nevertheless, the San Francisco Bay Area of California may meet this new standard. This study investigates the relationship between daily mortality and air pollution in Santa Clara County (a Bay Area county) using techniques similar to those utilized in earlier epidemiologic studies. Statistically significant associations persist in the early 1990s, when the Bay Area met national air pollution standards for every criteria pollutant. Of the various pollutants, the strongest associations occur with particulates, especially ammonium nitrate and PM2.5. The continuing presence of associations between mortality and air pollutants calls into question the adequacy of national standards for protecting public health.

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