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Glenn R. Lowenstein

Glenn R. Lowenstein

P.G., CAPM, President
About Glenn
Shannon J. Ware

Shannon J. Ware

Chief Financial Officer
About Shannon
Matthew Cowan

Matthew Cowan

PG, CAPM, Chief Geologist
About Matthew
Isabel Siahatgar

Isabel Siahatgar

Staff Geologist
About Isabel
Ralph Kaldawy

Ralph Kaldawy

Environmental Consultant
About Ralph

TSI is a registered firm with the Texas Board of Professional Geoscientists and Corrective Action Specialist with the Texas Commission on Environmental Quality.

Firm Registration Number 50018
CAS Number CS0000037

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