Kean S. Goh recently served as the Environmental Program Manager for the Surface Water Protection Program at the California Department of Pesticide Regulation. He has a doctorate from the University of California, Davis in Entomology and with emphasis in Environmental Toxicology. He directed the statewide program to protect the aquatic environment from pesticide contamination. He has over 35 years of US and international experience in pesticide research, assessment, and mitigation of the impacts of pesticides on human and the environment, including teaching, extension and research with Cornell University and research and development with DuPont Agricultural Chemicals. He has contributed to over 50 journal articles, book chapters, and co-edited a book in pesticide fate, risk assessment and analytical method for pesticides. Jay Gan is a professor in the Department of Environmental Science at University of California, Riverside, and has over 30 years of research experience on environmental fate, transport, risk assessment and pollution mitigation of organic contaminants including pesticides. He served as the Department Chair at UC Riverside in 2007-2010, and the Division Chair of Agrochemicals of American Chemical Society. He is an elected fellow of AAAS, ASA, SSSA and AGRO Division of ACS. To date he has authored over 270 journal articles and 4 edited books. His publications have been widely cited, with a cumulative citation number of over 11,000 and an H-index of 59 (as of June 2018) according to Google Scholar. His research interests include development of novel sampling and analytical methods, phase partition of contaminants, abiotic and biotic transformations, aquatic toxicology, plant accumulation, bioremediation, and risk assessment and mitigation of man-made chemicals. Dirk F. Young is a senior engineer in the Office of Pesticide Programs at the U.S. Environmental Protection Agency and has over 20 years of experience in pesticide fate and transport, risk assessment, and model development. He coordinates model development in the Office of Pesticides and is the lead developer of EPA’s main models for estimating pesticide concentration in surface waters, ground water, and rice environments. He also is a frequent consultant for model development in other U.S. and international regulatory agencies. He has a doctorate in Environmental Engineering from Johns Hopkins University where he specialized in contaminant transport. Yuzhou Luo is a research scientist with the Surface Water Protection Program, California Department of Pesticide Regulation. He has a doctorate in Environmental Engineering from the University of Connecticut. His areas of technical expertise include ecological risk assessment, simulation of pesticide fate and transport, and spatial data analysis. He has 20 years of experiences on model development and applications for surface water protection. He contributed over 40 journal papers, and edited a book on risk assessment approaches.