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The Source Characterization Team (SCT) develops, directs, and conducts research on sources of indoor air pollution and their interactions with indoor surfaces (i.e., sinks). Source and sink characterization studies provide quantitative information on the temporal impact of sources and sinks on indoor environments. Such information is required for applying source-management techniques to minimize occupant exposure to emissions. Source emissions and sink models for a variety of indoor materials and products are being developed. The models are applied to full-scale indoor environments and integrated with indoor air quality (IAQ) models to enable evaluation of source-management options. The SCT develops methods and guidance for testing indoor materials and products to ensure that manufacturers use valid testing procedures and that the test results are reported in a consistent manner. This will allow consumers (e.g., architects, builders, public) to be able to make informed judgments on the emission characteristics of indoor materials and products in order to manage them effectively. Such guidance is also expected to encourage producers to develop and market low-impact materials and products. To learn more about this research study, visit the website at http://www.epa.gov/appcdwww/crb/iemb/source.htm. To access directly from this website, click on downloads on the navigation bar.

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