Lake City, Missouri: Thermal Treatment at Area 17B

GEO's Lake City case study describes in-situ thermal treatment at Area 17B of the Army Ammunition Plant in Independence, Missouri. Historical disposal affected soil and groundwater with chlorinated solvents and petroleum hydrocarbons.

Overhead view of the Area 17B thermal-treatment footprint at Lake City.

The target area covered approximately 15,072 square feet, with an average treatment depth of 51.3 feet. The installation included 127 natural-gas-powered heater wells, 71 co-located multiphase and soil vapor extraction wells, 32 shallow extraction wells, 55 horizontal extraction wells, and 20 temperature and pressure monitoring points.

The multiphase extraction system operated for 20 days before heating to establish hydraulic and pneumatic control. Vapor treatment combined cooling and condensation, C3, and vapor-phase activated carbon.

Measured average temperatures at different depths during the Lake City Area 17B heating period.

The source reports 243 days of active heating and recovery of more than 43,626 pounds of chlorinated and petroleum contaminants. These results apply to the defined treatment zone.