Using Measurements and Modeling to Understand Local and Regional Influences on PM 2.5 in Vicinity of the PRGS 2 Patrick Campbell & David Shea; 01/30/2008; 11:20 a.m. Background Need to determine best way to quantify PM 2.5 impacts near PRGS Performed at VA DEQs request using VA DEQ-approved methodology Utilize monitoring and modeling 3 Patrick Campbell & David Shea; 01/30/2008; 11:20 a.m. Overview PM 2.5 = Particulate aerodynamic diameter < 2.5 microns Multi-faceted data set from 2006 2007 ENSR PM 2.5, SO 2, and meteorological data local to the Mirant Potomac River Generating Station (PRGS) Regional FRM PM 2.5 data (