KTL will be joining the technical program of the Society of Environmental Toxicology and Chemistry (SETAC) North America 46th Annual Meeting November 16-20, 2025 in Portland, Oregon. SETAC is dedicated to advancing environmental science and science-informed decision-making through collaboration, communication, eductaion, and leadership.

KTL Senior Associate Margaret Roy will be presenting Representation of the Homeless in Human Health Risk Assessment on Monday, November 17 at 10:00 am as part of Session 5.08: Beyond Direct Contact: Non-Traditional Exposure Scenarios in Human Health Risk Assessment.

Human Health Risk Assessments (HHRAs) are used to assess contaminant exposure and risk to defined populations, such as residents, commercial workers, and construction workers. HHRAs can also be used to assess risk for the homeless population. This presentation will discuss some of the challenges associated with developing an exposure model to represent the homeless sheltering and living on a contaminated site. For example, interviews with individuals may be necessary to develop an accurate exposure model. The presentation will also discuss the importance of the field sampling crew, from observing field conditions to safety concerns.