Guidance for Design, Installation and Operation of Groundwater Extraction and Product Recovery Systems

摘要

This is a guide to using groundwater extraction and product recovery as a remediation technology. Groundwater extraction systems are systems that pump contaminated groundwater from an aquifer on a long-term basis. Groundwater extraction requires treatment and proper disposal of the pumped groundwater. Groundwater that is treated on-site can be discharged to surface water or groundwater under a Wisconsin Pollution Discharge Elimination System (WPDES) permit. Treated groundwater (on-site or off-site) may also be discharged to a publicly owned treatment works (POTW) provided that prior approval is obtained from the POTW. Most of this guidance is specific to remediation of unconfined aquifers, however, much of the guidance is also appropriate for confined aquifers. An aquifer is defined in this document as any soil or rock unit that contains water under saturated conditions. The term aquifer, as used in this document, can refer to a unit that is overlain and/or underlain by a geologic unit that has relatively higher permeability, and/or does not produce economically significant volumes of water.