Rental System for Remediation of a Redevelopment site.
MAE2 was selected to provide a rental system to remediate a former gas station site that had been redeveloped.
MAE2 had previously provided a rental system that successfully removed most of the gasoline contamination from the site but had to be removed to allow for construction when the property was sold for redevelopment. The remaining fuel contamination was concentrated in a smaller area. Renting a system was a perfect option for this site. After the site was redeveloped, a different smaller system was chosen to complete the site remediation saving both rental and operating cost.
The fuel contamination was limited to the vadose zone soils, so the system selected was an air sparge, soil vapor extraction system. This involves pumping air into the pressure wells to volatilize residual fuel and to stimulate bio remediation activity. The soil vapor extraction creates further volatilization and extraction of soil vapors. The system is enclosed in an 8’ x 14’ utility trailer with insulated walls and ventilation fan and lights.
The air sparge unit is a 7.5 HP Rotary Vane Compressor capable of providing 55 ACFM @ 20 PSI to a two point manifold with each leg including a pressure gauge and a ball valve. The vapor wells are connected to a two point extraction manifold that includes a gate valve and vacuum gauge for each leg. The soil vapor extraction consists of a marine grade aluminum vapor liquid separator and a 15 HP regenerative vacuum blower capable of 350 SCFM @ 85” WC vacuum. The vapor liquid separator includes a centrifugal transfer pump to empty any water that is collected. The system includes a relay based control panel to allow for simple fully automated control.
This Remediation System uses the following components and subsystems
Regenerative Vacuum Pump
Rotary Vane Air Compressor
Rotary Claw Compressor