2002 Assessment Results

The following may be useful in analyzing the results in the tables:
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State-specific Emission by County (Microsoft Excel 2003 format) |
The tables accessed below provide the pollutant-specific tons/year emissions for the year 2002 for every state (including Puerto Rico, the Virgin Islands, and the District of Columbia) and for every county in each state. These tables also provide a breakdown of the emissions by source sector (i.e., major, area, mobile, and background). There is also a file that provides the total emissions of all HAPs for the U.S. This file shows the contribution of each source sector to the total emissions. |
2002 County-Level Modeled Ambient Concentrations, Exposures, and Risks (Microsoft Access or Excel 2003 format) | ||||
The following tables present the EPA's 2002 national-scale assessment estimates across the United States plus Puerto Rico, the Virgin Islands, and the District of Columbia using 2002 national air toxics emission inventory as input to the air dispersion models ASPEN, and an inhalation exposure model (HAPEM5). Exposure modeling is an important step in this assessment because it takes into account that people move from one location to another, (e.g., from outside environments to inside environments). These data are presented in different ways. The nationwide, county-level files, (i.e., the Excel files listed below), present each endpoint risk or hazard quotient estimate by state and county. Additionally, the data are presented by source sector, (i.e., stationary, mobile, and background). The Microsoft Access files present individual pollutant results for each state and county in the assessment. Conversely, the state summary files present the results by state and county for all pollutants. |
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If you have questions about this assessment, please contact Ted Palma at palma.ted@epa.gov