Jeffrey A. Kuhn serves as TRI Environmental Group's Executive Director. He holds a bachelor’s degree in civil engineering from The University of Maryland (2003) and a doctorate from The University of Texas at Austin (2010).

Sam began his career in the geotechnical and construction materials testing field and has broadened the scope of his involvement in environmental engineering to include geosynthetics technology with specialization in laboratory testing operations.

Jarrett Nelson, B.S. in Mathematics, is the Director of Operations at TRI Environmental, based in Austin, Texas. He earned his bachelor's degree from The University of Texas at Austin and has been with TRI since 1996. With over 20 years of experience in testing geosynthetic materials, Jarrett serves as a technical resource across all divisions at TRI Environmental and is actively involved in new test development.