Dr. Lung joined the Civil and Environmental Engineering Department at the University of Virginia (UVa) in 1983. Over the years, he has served as a visiting professor at Tsinghua University, Tianjin University, National Taiwan University, Hong Kong University, and Hong Kong University of Science & Technology (HKUST). He led a joint UVa/HKUST Jefferson Global Seminars, lecturing “A Global Perspective of a Sustainable Environment” in 2013 and 2014 in Hong Kong. He retired from UVa in May 2017. He has over 45 years of experience in modeling natural water systems in US, China, Taiwan, India and NATO countries. At UVa, he has worked on estuarine modeling of eutrophication and toxic substances. In 1990, he completed a study for US EPA on the eutrophication potential in coastal embayments in Prince William Sound, Alaska following the EXXON VALDEZ oil spill. In 1991, he was named to a model evaluation panel for the US EPA Chesapeake Bay Program, providing guidance to water quality modeling work on the Chesapeake Bay watershed. Over the past 35 years, he has conducted a series of mixing zone modeling studies of toxicity, metals, and thermal effluents to assist the regulatory agencies on discharge permit renewal, wasteload allocations, and TMDLs. He performed water quality modeling of rivers, reservoirs, and estuaries in Slovenia and the Baltic states under NATO sponsorship from 1998 to 2003. He completed a joint UVa/India project on water quality modeling of the Yamuna River in Delhi, India to restore the polluted water body. His work on estuarine modeling has been summarized into a book-Water Quality Modeling: Application to Estuaries, published by CRC Press in 1993. His second book, Water Quality Modeling for Wasteload Allocations and TMDLs, was published by John Wiley & Sons in May 2001. His latest book: Water Quality Modeling that Works, was published by Springer in 2022.