How the EPA regulates particulate matter (PM), & how PMed is Springfield
Today we’re investigating the Annual Air Quality Reports found on the MA DEP website for 2010, 2009 & 2008, looking at the data for fine particulate matter—the stuff that, combining w/other pollutants, makes smog. (Data charts are below.) We’ll look at PM 2.5: particulate matter of 2.5 microns or less. This stuff is bad for [...]

