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Pump and TreatPump-and-treat is a mature technology used by CEA to remove groundwater contaminated with a variety of dissolved materials, including petroleum Volatile Organic Compounds (VOCs), Semi-volatile Organic Compounds (SVOCs), fuels, UXO (i.e., explosive compounds) and dissolved metals.When contaminated groundwater is removed from the subsurface by pumping, it is often treated before it is discharged. Hence this method is referred to as pump-and-treat. This is the most common form of groundwater remediation. It is often associated with treatment technologies such as Oil-water Separation system design, Air Stripping, U-V oxidation, and Liquid-phase Granular Activated Carbon. Well construction, pumping equipment, and treatment components are dependent on site characteristics and contaminant types. It is not uncommon to find many wells extracting groundwater at the same time. These wells may be screened at different levels to maximize effectiveness. A major component of any groundwater extraction system is a ground water monitoring program to verify its effectiveness. Monitoring the cleanup allows the operator to make adjustments to the system in response to changes in subsurface conditions. A major consideration of a pump-and-treat system is determining when to turn the system off. Termination requirements are based on the risk-based cleanup objectives defined in the initial stage of the remedial process, combined with site-specific aspects revealed during remedial operations. |
