Dr. Steven T. Summerfelt is Director of Aquaculture Systems Research for The Conservation Fund’s Freshwater Institute in Shepherdstown, West Virginia. With the Fund since 1982, Steve is currently Project Leader for a Cooperative Agreement supported by the USDA Agriculture Research Service titled Development of Sustainable Land-based Aquaculture Production Systems. Steve’s research focus centers on water treatment unit processes and on the optimization of fish production in high intensity water recirculation and reuse systems. Steve is author or co-author of more than fifty peer-reviewed journal publications, nine book chapters, and a book titled Recirculating Aquaculture Systems. His research has advanced understanding and practical design criteria for fluidized-sand biofilters, microscreen filtration, aeration, air-stripping, oxygenation, ozonation, ultraviolet irradiation, engineering of fish culture tanks, continuous production modeling and management, and ultrasonic waste-feed control. Steve has transferred his research interests to application with state and federal agency fish culture facilities and the design of large private aquaculture farms. Steve is a Professional Engineer and holds a Ph.D. in Civil Engineering (Environmental Emphasis), Iowa State University; a M.S., Chemical Engineering, Michigan State University; and a B.S., Chemical Engineering, Iowa State University.