Former EPA Research Chief's IRIS Overhaul Proposal Spurs Staff Concern

Former Bush EPA research chief George Gray is proposing what he calls a “provocative” overhaul of the agency's Integrated Risk Information System (IRIS) program to alter the types of risk estimates it publishes in order to reduce uncertainty and improve IRIS, prompting concern from agency staff about the proposal's limitations. Gray, now an environmental health professor at George Washington University, outlined his plan at an Oct. 15-16 workshop, weighing in on EPA's ongoing efforts to make IRIS more rigorous and...