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SPECIATE is the U.S. Environmental Protection Agency’s (EPA) repository of volatile organic gas and particulate matter (PM) speciation profiles of air pollution sources. Among the many uses of speciation data, these source profiles are used to: 1) create speciated emissions inventories for regional haze, particulate matter with an aerodynamic diameter less than 2.5 micrometers (PM2.5), and ozone (O3) air quality modeling; 2) estimate hazardous and toxic air pollutant emissions from PM and organic gas primary emissions; 3) provide input to chemical mass balance (CMB) receptor models; and, 4) verify profiles derived from ambient measurements using multivariate receptor models (e.g., factor analysis and positive matrix factorization).

The purpose of the website is to provide access to the SPECIATE database through a simple web interface. You may also download the SPECIATE databases (ZIP 8MB). This is a zipped MS Access file. In order to use the SPECIATE database, you must have MS Access 2002 or above installed.

Contact Mike Kosusko for support or more information at kosusko.mike@epa.gov.

Use the links on the left to view the SPECIATE database contents.

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