Amentum recently executed the world’s largest Thermal Conductive Heating (TCH) project over a four-year period with our Federal Aviation Administration (FAA) thermal partner TerraTherm using a multiple – phase approach. The former jet fuel farm project site was historically used for the storage of jet fuel in two 420,000-gallon bermed, above ground storage tanks (ASTs) and two 567,000-gallon underground storage tanks (USTs). The ASTs were removed in 1994 and the ASTs were abandoned in place in 2000. The successful completion of this project resulted in a cost avoidance of $218M by reducing the environmental remediation timeline by 140 years. The multiple phase approach was dictated by the available electric power supply and the operational limitations resulting from forecasted mass loading on the thermal oxidizer.
Over the course of the phased project, Amentum installed 1,156 TCH system infrastructure wells to a maximum depth of 30 feet over the 4.5-acre site to heat, remove and monitor contamination removal progress in the Thermal Treatment Zone (TTZ). These wells were powered and monitored remotely via a Supervisory Control and Data Acquisition system. Amentum constructed a TCH Treatment Compound to cool extracted liquid, remove light non-aqueous phase liquid (LNAPL) and consolidate the TTZ vapor stream prior to treatment by the thermal oxidizer.
Project Highlights:
- Removed 325,000 pounds of LNAPL.
- Remediated LNAPL contamination underneath the 10,000 square foot groundwater treatment plant (GWTP) while continuing to use the GWTP to process TCH liquid wastewater prior to discharge to groundwater recharge bed and 12 injection wells.
- Utilized our on-site Geographic Information System to pre-plan drilling solutions through historical fuel farm sub-surface concrete infrastructure and eliminate any project delays.
- Delivered this multi-year project 27-days ahead of schedule while mitigating unforeseen contaminant loading challenges that required flexible daily energy removal adjustments.
- While completing this complex remedial action task order, we continued our multiple contract 24-year safety performance record of zero lost-time injuries.