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Ecological Risk, Inc. is a California-based firm started in 2010. Our staff is led by Dr. Bradley E. Sample, an ecotoxicologist and risk assessor with more than 20 years of diverse experience, with interests focusing on metals, radionuclides, chlorinated organics, munitions, and petroleum compounds. His work includes evaluation of contaminant exposure and effects to wildlife, as well as aquatic, sediment, and soil biota. He is author of more than 100 publications and presentations, including several book chapters, has developed the wildlife exposure model for EPA’s Ecological Soil Screening Levels, and the U.S. Army’s Adaptive Risk Assessment Modeling System, and continues to serve as the Hazard/Risk Assessment Editor for Environmental Toxicology and Chemistry.