220923 Dvorak 224

Bruce Dvorak, center, Professor of Civil and Environmental Engineering, coaches Yves Cedric Tamwo Noubissi, left, senior in Mechanical Engineering, and Sussan Moussavi, graduate student in Civil Engineering, in the use of a Fluke Precision Acoustic Imager, used to detect leaks of gases and vacuum from pipes and tanks. They are working inside Lincoln’s Theresa Street Wastewater Treatment Plant. September 23, 2022. Photo by Craig Chandler / University Communication.