RESEARCH GROUP POISED TO BEGIN NEW INQUIRY OF PM RISK DRIVERS

The Health Effects Institute (HEI), a joint EPA/industry research group that focuses on health effects of mobile source pollutants, is launching a major new effort to identify the most toxic components of fine particles (PM) that may indicate what industry sectors EPA and states may target in current and future air regulations, sources say. The plan is moving ahead at a time when an electric utility research group recently unveiled preliminary study results that suggest PM from automobiles may be...