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Arizona Hazardous Air Pollution Research Program

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The purpose of this study was to evaluate the risk to public health from HAPs in Arizona and to provide options and recommendations for programs related to hazardous air pollutants. Measurements of atmospheric hazardous air pollutant concentrations and emissions estimates for motor vehicles were carried out in Arizona. Those chemicals of greatest potential concern, called chemicals of interest (COI) were selected for further analysis - about 25 chemicals for each region. The exposure to the population was estimated by using ambient measurements and atmospheric simulation models, and the health risk was determined based on dose-response information from the U.S. EPA and the California EPA. The health risks due to these exposures was then characterized.

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