Top officials overseeing EPA's Integrated Risk Information System (IRIS) program say they are planning additional changes to the controversial chemical hazard assessment program, including gathering public input before assessments are drafted and generating new data for analyses -- both changes which have been sought by industry critics. The planned changes come as OSHA continues exploring ways to assess hazards from chemical exposures in the workplace and update OSHA permissible exposure limits. Kenneth Olden, recently appointed as director of EPA's National Center for Environmental Assessmen
December 29, 2025