Abstract: Various implementations include a passive groundwater treatment barrier system. The system includes an in-situ hydraulic barrier wall constructed in a path of flow of a contaminated groundwater plume. At least one water-tight treatment vessel is positioned proximate to (and preferably upgradient of) the barrier wall, the treatment vessel containing a treatment media and configured for downflow of groundwater through the media. A groundwater infiltration and collection system is located upgradient of the barrier wall to convey contaminated groundwater to the treatment vessel. The system includes a hydraulic head control apparatus and a conveyance pipe passing through the barrier wall and connecting the treatment vessel to the hydraulic head control apparatus. A outlet which, in some implementations, includes a distribution system positioned downgradient of the barrier wall to disperse treated groundwater.

Abstract: A method and system are described for removing contaminants from the phreatic zone, also known as the saturation zone, or groundwater. A barrier wall is constructed below the ground surface and in the path of flow of a contaminated groundwater plume. A well is constructed in advance of the barrier wall and is connected to the barrier wall via a pipe. Various remediation media may be lowered into the well to perform remediation on the contaminated groundwater before it passes through the barrier wall.

Abstract: A method and system are described for removing contaminants from the phreatic zone, also known as the saturation zone, or groundwater. A barrier wall is constructed below the ground surface and in the path of flow of a contaminated groundwater plume. A well is constructed in advance of the barrier wall and is connected to the barrier wall via a pipe. Various remediation media may be lowered into the well to perform remediation on the contaminated groundwater before it passes through the barrier wall.