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Draft Analyses of PM Data for the PM NAAQS Review

These files document all analyses conducted in association with the EPA memorandum from Mark Schmidt, David Mintz, Tesh Rao, and Lance McCluney titled "Draft Analyses of PM Data for the PM NAAQS Review," January 31, 2005. These analyses were conducted for the review of the Particulate Matter (PM) national ambient air quality standards (NAAQS). Particle data used in these analyses were obtained from two main sources: 1) EPA's Air Quality System (AQS) database; and 2) the National Park Service's Interagency Monitoring of PROtected Visual Environmental (IMPROVE) aerosol monitoring network website. Data were extracted on various dates in July and August, 2004. The following files are available for downloading: