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Summary
An example of the air sparging system at Site 78, Marine Corps Base Camp Lejeune, North Carolina. Air is injected into each well through a separate line. Pressure and flowrate are monitored to help field personnel determine if the system is operating as designed.
At Site 78, Operable Unit 1, a pilot study was conducted between November 2017 and November 2018 to evaluate the effectiveness of air sparging to treat chlorinated solvents found in groundwater at depths up to 125 feet below ground surface. Air was injected into the subsurface to remove the chlorinated solvents. Influence from the sparging was observed up to 40 feet away.
Concentrations of chlorinated solvents were reduced by up to 98 percent, translating to approximately 50 pounds removed. (Courtesy asset)