World’s Largest In Situ Thermal Desorption Project: Challenges and Solutions
by G. Heron, K. Parker, S. Fournier, P. Wood, G. Angyal, J. Levesque, and R. Villecca

This paper presents the largest In Situ Thermal Desorption (ISTD) project completed to date. The redevelopment of a former aerospace manufacturing facility adjacent to a commercial airport was the main driver, requiring relatively rapid reduction of several chlorinated volatile organic compounds (CVOC) in a 3.2-acre source zone. The source zone was divided into four quadrants with differing treatment depths, heated simultaneously using a total of 907 thermal conduction heater wells. Five different depths were selected across the area, according to the depth of contaminant impact.

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