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Technical Report 
EPA Report 
Pilot study on coarse PM monitoring 
U.S. Environmental Protection Agency :: U.S. EPA 
EPA Office of Air Quality Planning and Standards 
Research Triangle Park, NC 
The U.S. Environmental Protection Agency (EPA) conducted this field study in 2010 and 2011 to evaluate the challenges in sampling and analyzing coarse aerosol, the precision of coarse PM (PMc) mass species measurements using dichotomous (dichot) samplers, and mass balance of PMc. The study database is publicly available through the EPA Air Quality System (AQS) to EPA personnel, atmospheric scientists, and others concerned with the science of PM air pollution, related health effects, and human exposure to the coarse PM fraction of particulate matter. Additional samplers—including paired PM10 and PM2.5 Federal Reference Method (FRM) samplers to calculate PM10-2.5 mass and species concentrations by the difference method, and semi-continuous monitors—were operated to further characterize coarse PM and aid in the interpretation of any differences between dichot data and difference method data. The results of this study may be used to establish routine field operating procedures and laboratory standard operating procedures (SOPs) for use in PMc speciation monitoring. 
• ISA-PM (current)