A Brief History
Started in September 2000 as a licensee of the electrical resistance heating (ERH) technology developed at Pacific Northwest Laboratories, TRS Group (TRS), an employee-owned company, has grown to more than 70 people with joint ventures and partnerships in South America and Europe. In addition to ERH, our heating solutions include applying thermal conduction heating (TCH) in situ and ex situ for PFAS and other high boiling organic compounds and steam enhanced extraction (SEE).
As part of our commitment to remediating PFAS, in 2019 we added AFFF clean out services using the PerfluorAdTM system, developed by Cornelsen. In 2021 TRS received a patent for the thermal desorption of PFAS from soil.
In January 2025, Parsons acquired TRS Group. The Parsons and TRS cultures are nicely aligned. Parsons, too, is an employee-owned company.
Emily Crownover, Ph.D.
Managing Principal Engineer, R&D Manager
Research & Development
TRS Group is focused on reducing the costs and improving the sustainability of our remediation technologies. Our
research and development (R&D) program has led to numerous patents, including the thermal desorption of PFAS.
Our R&D efforts include work in the laboratory, in the field and in modeling and analytical approaches.
For more information, visit our R&D microsite and learn about our current research.
Our Leadership Team
Brett Trowbridge
Dan Oberle
Wayne Rebich
Gorm Heron
Mark Kluger
