Sam Allen
Vice President
TRI Environmental
Sam Allen is the Vice President of Texas Research International‘s (TRI) Geosynthetics Services Division. For ~20 years, he has co-taught courses on geosynthetic technologies, applications, and business. In September 2022, he will begin a four-year term as the President of the International Geosynthetics Society (IGS). Previously, he served as Chairman of ASTM Committee D35 on Geosynthetics. He has also served on the Board of Directors of the Geosynthetic Institute (GSI).
https://www.tri-environmental.com
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Vice President
TRI Environmental
Abigail Gilson
Senior Engineer
TRI Environmental
Abigail Gilson, M.S., P.E. is a Senior Engineer for TRI/Environmental. Gilson has a wealth of experience in geomembrane-lined containment facility design and construction and has performed more than 160 million square feet of liner integrity surveys across 100+ projects since 2004. Her contribution to the field of electrical leak location includes numerous published technical papers, educational seminars, presentations world-wide, and chairing the ASTM committee for the recent revisions and additions to the ASTM Standard Guide and Practices. Ms. Gilson’s expertise is available for providing equipment, field training, classroom education, instructional presentations, engineering consulting, and liner integrity survey execution. She has trained staff in all of TRI’s office locations to provide local assistance on survey projects.
https://www.tri-environmental.com
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Senior Engineer
TRI Environmental
Jeffrey Kuhn
Executive Director
TRI Environmental
Dr. Jeffrey Kuhn, P.E., is the Geotechnical Laboratory Director for TRI/Environmental, Inc. His doctoral work principally focused on alternative/evapotraspirative cover design and evaluation for the EPA, and he performed research with expansive clays for the Texas Department of Transportation (TxDOT). Prior to joining TRI, he served as a consulting engineer, where he worked on the design and installation of the Circuit of the Americas Formula One Race Track over expansive clays with tight differential movement criteria. Since 2012, he’s led the expansion of TRI’s geotechnical laboratory capabilities and reach within the geotechnical community.
https://www.tri-environmental.com
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Executive Director
TRI Environmental
Mark Sieracke
Principal
Weaver Consultants Group
Mark Sieracke, P.E. is an industry-recognized expert in the fields of landfill design and CQA. Mark serves as a Principal and Solid Waste Practice Area Manager for Weaver Consultants Group. Mark has served as a Technical Reviewer of the US EPA Technical Guidance Document: Quality Assurance and Quality Control for Waste Containment Facilities (EPA/600/R- 93/182, Sept. 1993). He has served as a hands-on CQA practitioner, certifying engineer, and consultant for 1000+ acres of geosynthetic installations. He contributes routinely to landfill failure investigations and constructability reviews for design engineers. Mark serves on the Waste Management Inc. (WMI) Geosynthetic Task Force, creating the corporate standards for CQA.
https://wcgrp.com/
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Principal
Weaver Consultants Group
