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Multiple Air Toxics Exposure Study I

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The South Coast Air Quality Management District conducted the Multiple Air Toxics Exposure Study (MATES) to identify areas with high concentrations of multiple air toxics through ambient monitoring, and to assess potential population exposure and health risks through the application of a regional urban air toxics exposure and risk assessment model. Measurements were taken at 10 sites in the South Coast Air Basin selected through modeling and on-site surveys to determine those areas with the greatest potential for high concentrations of multiple air toxics. Samples for organic gases and metals were collected from May-October 1986 and November 1986-April 1987. Ambient air toxics data from existing District and Air Resources Board network stations were compared to the MATES data. This research effort will reduce the limitations of the regional exposure and risk assessment model.

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