Mr. Glessner is a Principal Project Engineer and technical lead of the Water Design Group in Gannett Fleming's home office in Camp Hill, PA.  Tim has over 30 years experience in design and construction of water treatment plants using a wide variety of processes including high rate clarification, membrane filtration, and UV.  Mr. Glessner has worked on projects using both conventional and alternative delivery methods.

Roy is a Senior Project Engineer with Indiana American Water. He has been responsible for managing capital projects of differing variety, including wells, pump stations, water storage tanks, treatment facility improvements, and new treatment facility construction. He has completed five major projects using progressive design-build.

Trisha Graves is a Project Engineer with Gannett Fleming. She has 11 years experience in the water/wastewater industry, principally focused on the design of water treatment plants. Over the past several years, she has served as Project Manager and/or Lead Civil/Process Designer on design-build water treatment plant projects. She has a Bachelor’s degree from Pennsylvania State University and a Master’s degree from Villanova University and is a professional engineer in the State of Pennsylvania.