Ms. Elleen Hsu is a Senior Risk Assessment Scientist with over 13 years of professional experience in exposure assessment and human health risk assessment. She is experienced in project management as well as researching, reconstructing dose and exposure, and assessing risk to consumers and workers exposed from consumer products, occupational settings, and the environment to a variety of chemicals and agents including asbestos, benzene, dust, lead, SARS-CoV-2, and silica.  She has evaluated historical and contemporary compliance with applicable federal and state-level standards and regulations and as well as developed/evaluated occupational health and safety programs and occupational exposure limits. Additionally, she has provided technical support to expert witnesses in toxic tort litigation matters.