Corrective Action Plan for Former Gas Station Site Remediation
MAE2 was approached by a consultant that had performed a Corrective Action Plan and recommended a multi-phase extraction system to perform remediation at a former gas station site.
In order to keep the budget costs low the consultant looked for a high quality, dependable refurbished system. The consultant wanted a reliable system refurbished with attention to detail and consistent long term product support.
MAE2 bought a used system that had successfully completed remediation and site closure from a consultant in GA. MAE2 brought the system back to our facility and completed a custom refurbishment. MAE2 converted the groundwater pumping/SVE system into a multi-phase high vacuum system. We removed the Positive Displacement Vacuum Blower, Reciprocating Compressor and air and water manifold piping. We installed a Rotary Claw Vacuum Pump and Liquid Carbon Vessels. The system components were completely tested and a full O & M and cleaning was conducted to make the system site ready.
The system is a Dual Phase Extraction and Groundwater Treatment system designed for 20 GPM water flow and 325 ACFM vapor flow at 25” HG. There is a 10 point extraction manifold that pulls both water and vapor from the extraction wells using a 15HP rotary claw vacuum pump. The extracted groundwater is collected in the marine grade aluminum 120 G Vapor/Liquid separator and then pumped to an Oil Water Separator (OWS) using a progressive cavity transfer pump.
Any free fuel that is extracted is collected in the OWS and gravity drains into a product holding tank. The water is pumped from the OWS through a bag filter, to remove suspended solids, and then to a Poly Stackable Tray Air Stripper. After the air stripper the water is pumped through two bag filters in series, to remove any remaining suspended solids and two High Pressure Steel Carbon vessels for final treatment before discharge. The OWS pump and Air Stripper pump are centrifugal transfer pumps. The system is controlled by a custom PLC control panel that allows for remote access and control using web based telemetry.
The reuse of an existing system that is custom refurbished provides a proven cost effective solution and reduces capital costs and delivery time.
Components used in this system