Science Assessments in Support of NAAQS
Understanding the current science about the health and welfare effects of the criteria air pollutants is a critical Agency need to support decisions about the National Ambient Air Quality Standards (NAAQS). To meet this need, the Office of Research and Development (ORD) develops Integrated Science Assessments (ISAs) that summarize the latest available, relevant science on the health and welfare effects of the six criteria air pollutants - ozone, particulate matter, sulfur dioxide, nitrogen oxides, carbon monoxide, and lead. ORD is also: developing a joint sulfur dioxide and nitrogen oxides ecological ISA and Multipollutant Science Assessments (MSAs); conducting critical research on the health effects of exposure to the criteria air pollutants; and funding the academic community to further the science of understanding the health and welfare effects of the criteria air pollutants. Additionally, ORD conducts and funds research on the human health effects that result from exposure to the criteria air pollutants. For example, the Science to Achieve Results (STAR) grants program funds four Clean Air Research Centers and has previously funded Particulate Matter Research Centers.