The Risk Assessment Information System Compendium of Ecological Screening Benchmarks for Chemicals and Radionuclides (2025) (Volume I – Text, Radionuclides for all Media, Chemicals for Air and Biota)

The Risk Assessment Information System Ecological Benchmark Tool compiles screening level benchmark values for assessing potential ecological risks posed by chemical and radionuclide contaminants. Drawing from a wide array of federal, state, and international sources, it consolidates benchmarks across environmental media, including soil, water, sediment, air, and biota, and presents values for a broad range of receptors and exposure pathways. The tool includes both effect-based and no-effect thresholds, with media- and organism-specific guidance derived from peer-reviewed literature and regulatory frameworks. By integrating diverse benchmark types into a unified reference, the tool supports consistent, scientifically grounded evaluations in ecological risk assessments and environmental management practices.. Authors: Milligan, Janou S. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0009000527228800); Stewart, Debra J. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0009000573914174); Dolislager, Fredrick G. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0009000325477921); Noto, Katie A. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)]; Manning, Karessa L. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000162937729). DOE Contract: AC05-00OR22725. Subjects: 54 ENVIRONMENTAL SCIENCES