U.S. EPA Contaminated Site Cleanup Information (CLU-IN)

U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

For more information on Thermal Treatment - In Situ, please contact:

Jim Cummings
Technology Assessment Branch

PH: (703) 603-7197 | Email: cummings.james@epa.gov

In Situ Thermal Treatment Site Profile Database

Naval Air Warfare Site
Last Updated: 08/02/2011
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Site Name   Naval Air Warfare Site
Site Location   West Trenton, NJ
Site Type   Naval Air Station
Cleanup Program   Environmental Security Technology Certification Program
Entity Responsible for Cleanup   Navy
Project Name   Naval Air Warfare Site
Project Technology   Conductive Heating (In Situ Thermal Treatment)
Scale   Field Demonstration/Pilot
Vendor   Not Specified
Project Status   Complete

Contaminants of Concern cis-1,2-Dichloroethene
Vinyl chloride
Media Type Groundwater
Dense Non-aqueous Phase Liquids (DNAPLs)
Extent/size of area of contamination   The treatment area 400 square feet and included a volume of 740 cubic yards.
Description of geology/hydrogeology   Mudstone bedrock in the area exists at 5 feet below ground surface.
Cleanup goals or remedial objectives   The objectives of the thermal conductive heating pilot scale treatment effort were to reduce the contaminant lifespan in the fractured bedrock and reduce aqueous-phase contaminant flux and concentrations in the treatment area.
Performance data available?   Yes
Summary and description of performance data   After a 14-week pilot study, approximately 530 pounds of chlorinated VOCs were removed from the bedrock by vapor extraction and an additional 30 pounds of VOCs were removed from the water and condensed steam. Results showed that VOC concentrations in from the treatment area were reduced from 277 milligram/kilogram (mg/kg) prior to heating to below 5 mg/kg after heating.
Comments   The Thermal Conductive Heating (TCH) pilot study operated continuously for 98 days, injecting 493,000 kilowatt-hour (kWh) of electricity into the treatment zone. The system involved 15 heater borings each with a vapor extraction screen to a depth of 55 feet below ground surface. Electricity was applied to reach a target temperature of 100 degrees Celsius. Air, stream, and fluids were extracted and contaminated water, and CVOC vapors went through an off-gas vapor and liquid treatment system.
Site contact information   Carmen Lebron
NAVFAC Engineering Service Center
Tel.: 805-982-1616
Email: carmen.lebron@navy.mil
Information Source(s)   Lebron, Carmen. U.S. Navy Demonstrates Thermal Conductive heating for DNAPL Removal in Fractured Rock. TNT (December, 2010).

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