ISOTEC is the most respected full-service environmental remediation firm providing design/build remediation services including chemical oxidation and reduction via injection, soil mixing, and ex-situ treatment. ISOTEC is now part of the TPS TECH team implementing Gas Thermal Remediation (GTR©) for remediation via in-situ thermal desorption (ISTD). GTR© units heat by natural gas or propane allowing the greatest flexibility in thermal conductive heating (TCH) while being reasonably priced compared with current thermal remediation alternatives.