The U.S. Environmental Protection Agency (EPA) will hold an Air Toxics Risk Assessment 101 webinar at 4 p.m. Central daylight time, Monday, May 20, 2019, to provide information about how the Agency assesses risk from air toxic pollutants in the outdoor air. EPA is holding the webinar to provide residents of the Willowbrook, Illinois area basic information on risk assessments in advance of the release of the Agency’s assessment of risk from the Sterigenics Willowbrook facility later this month. EPA will present results of the Sterigenics risk assessment at a public meeting May 29, 2019.