Usha Vedagiri is a Principal Risk Assessor and Manager of the Northern California Risk Practice with AECOM located in Oakland, California. Since 1998, Usha has worked at AECOM (formerly URS) specializing in human health risk assessment, ecological risk assessment, risk-based remediation goals, chemical-specific exposure and toxicity assessments and risk management plans. In support of remediation, permitting and exploration/extraction projects, she is responsible for management, scoping and execution of risk assessments, strategy development for risk-based remediation and redevelopment at contaminated sites, and risk identification and mitigation planning for resource development, in the United States and abroad. She has designed sampling and analysis plans and toxicity testing programs for environmental and biological media and evaluated risks related to a variety of chemicals including petroleum hydrocarbons, PAHs, PFAS, PCBs, dioxins, metals, and pesticides in terrestrial, freshwater and estuarine environments. For petroleum hydrocarbons, she has evaluated human health risks using a variety of USEPA and individual state-level guidance and ecological risks using technical methods ranging from screening-level assessments to complex modeling and testing-based approaches. Prior to AECOM, she worked for 8 years in the environmental consulting field with EA Engineering and IT Corporation. Since 2013, Usha has contributed to ITRC as a team member for ITRC's Risk Assessment, Bioavailability in Contaminated Soils, TPH Risk Evaluation at Petroleum-Contaminated Sites and PFAS teams. Usha earned a bachelor's degree in biology from Ethiraj College in India and a master's and Ph.D, in Environmental Science from Rutgers University in New Brunswick, New Jersey.