Lenwood Hall is presently employed as a Program Manager in Aquatic Toxicology by the University of Maryland's Wye Research and Education Center in Queenstown, Maryland. Currently, he is the Principal Investigator for nine research grants or contracts in the following research areas: aquatic toxicology, ambient toxicity testing, development of standard operating procedures for aquatic toxicity tests with estuarine species, development of ecological indicators, ecological risk assessment and exposure characterization of pesticides. During 20 years of research, he has published 79 papers in the peer reviewed literature, 22 book chapters or monographs, three books and 65 technical reports. He has generated over seven million dollars in research funding from 29 different sponsors during his career.