Dr. Herman Gibb is a Professorial Lecturer in the Department of Environmental and Occupational Health.

Dr. Herman Gibb is President of Tetra Tech Sciences (Sciences), an operating unit of the Tetra Tech Corporation specializing in health risk assessment. Dr. Gibb received his PhD in epidemiology from the Johns Hopkins University in 1989, his M.P.H. in environmental health in 1974 from the University of Pittsburgh and his B.S. in pre-medicine from the Pennsylvania State University in 1970. Since joining Sciences in 2004, Dr. Gibb has provided expert consultation to a variety of international and national clients.

Dr.Gibb has been an invited peer reviewer of health risk assessment documents prepared by the U.S. Environmental Protection Agency, the U.S. Food and Drug Administration, the National Institute of Occupational Safety and Health, Health Canada,and the World Health Organization. He is a Scientific Advisor on Risk Assessment for the European Commission. He chairs the World Health Organization’s Foodborne Epidemiology Reference Group’s (FERG) Chemical Task Force and is a member of FERG’s Country Studies and Source Allocation Task Forces. Before joining Sciences, Dr. Gibb served in the positions of Associate Director for Health and Assistant Center Director at the National Center for Environmental Assessment of the U.S. Environmental Protection Agency. He was the Project Officer for EPA’s cooperative agreements with the World Health Organization. He directed EPA’s assessment of inhalation exposures and potential health risks to the general population that resulted from the collapse of the World Trade Center Towers. He is an author of EPA’s Guidelines for Carcinogen Risk Assessment and EPA’s Risk Assessment Principles and Practices. He was the recipient of the EPA’s Scientific and Technological Achievement Award for his study of lung cancer mortality and clinical irritation among chromate production workers and the recipient of the EPA’s Gold Medal for Exceptional Service for his work on the drinking water standard for arsenic. His study of chromate production workers utilized one of the most extensive industrial hygiene data bases ever assembled in its analysis of the lung cancer risk from hexavalent chromium. The study formed the basis of OSHA’s Permissible Exposure Limit (PEL) on Hexavalent Chromium.

He is an author of the World Health Organization’s Environmental Health Criteria Document on Principles for the Assessment of Risks to Human Health from Exposure to Chemicals and the World Health Organization’s Environmental Health Criteria Document on Arsenic and Arsenic Compounds. Dr. Gibb was a member of White House Interagency Committees on Mercury and on Risk Assessment. He was an author of EPA’s Mercury Research Strategy. He is a member of the Presidential Advisory Board on Science, Engineering, and Health at the Ana G. Mendez University System in San Juan, Puerto Rico, and the Advisory Committee of the United States Transuranium and Uranium Registry. He belongs to the International Society of Environmental Epidemiology. He is a Professorial Lecturer in Environmental and Occupational Health and Adjunct Associate Professor of Pharmacology and Physiology at the George Washington University Medical Center. Dr.Gibb received the 2011 Practitioner of the Year Award from the Society for Risk Analysis.