TRI EnvironmentalAustin, TX — Dr. George Koerner, Director Designate of the Geosynthetic Institute (GSI), has announced that the GSI Board of Directors has selected TRI Environmental as its official support laboratory for the Geosynthetic Accreditation Institute – Laboratory Accreditation Program (GAI-LAP).

Since its creation in 1995, GAI-LAP has grown steadily to include 19 independent, 26 manufacturing quality control, and 4 research/governmental laboratories. Each lab participates in annual proficiency testing and quinquennial on-site audits. TRI Environmental will conduct on-site audit services for GSI relating to the 209 different geosynthetic test methods accredited under GAI-LAP.

This is the first time GSI has out-sourced laboratory accreditation audits. The decision to sub-contract some of the auditing work comes as a result of the growing workload at GSI and specifically the success of GAI-LAP. It will not be exclusively serviced by TRI Environmental, as GSI will also continue to perform audit work in-house.

“The GAI offers the most robust, responsive and relevant geosynthetics testing audit program in the world,” says Sam Allen, TRI Environmental’s Vice President of Geosynthetics Services. “TRI is honored to have been selected for this important function and is dedicated to sustaining the culture of service and excellence already established by GAI leadership.”


TRI Environmental is an independent 3rd party laboratory that has conducted geosynthetic material testing since the early 1980s. It was the first laboratory to receive GAI-LAP accreditation. TRI’s current scope of services include 140 accredited geosynthetics test methods. Also, TRI has provided distinguished service to the geosynthetics community through vigorous participation in ASTM D35 and D18, ISO TC 221, the Geosynthetics Institute, the International Geosynthetics Society (IGS) Council and various conference technical and organizing committees.

For more information, contact Sam R. Allen, Vice President, at or visit