Water can be pumped from drilled wells, culvert wells or an excavation by as many as three pumps. The system has additional controls for pumping from wells into a large external settling tank and then from the settling tank into the equipment trailer. Each pump is connected by 1" or 2" hose equipped with quick disconnects to a manifold on the trailer. Each port can be sampled individually and pumps may be throttled at the manifold. Available pumps include 1" deep well pumps and 2" submersible construction pumps. Any combination of pumps may be used. The pumps are connected to the electrical panel by twist lock plugs. Power to the pumps is ground fault protected and control circuitry is intrinsically safe. Each pump control system is equipped with selector switches that allow manual or automatic control utilizing probe water level sensors. Each pump power circuit is equipped with a panel-mounted ammeter to monitor pump load.

Water enters the system through the manifold and fills a 500-gallon product/water separator. This is a coalescing separator rated for 100 gallons per minute. The separator is also used to knock out silt. The separator contains weirs and the coalescing unit can be removed if not needed. If substantial amounts of free product are encountered, a skimmer can be fitted and product diverted to 55-gallon drums. Water flows from the top of the separator into a 250-gallon staging tank. This is done to prevent level fluctuations in the oil/water separator. Water is then pumped from the staging tank into the air stripper. A water flow rate meter is utilized to adjust the flow to the air stripper. The separator tank/staging tanks are fitted with high level controls to shut down the well pumps in the event of high water levels. The control circuitry is designed to allow intermittent operation and blower overrun when the stripper pump shuts down. Water is then pumped from the stripper through a discharge water meter and can be diverted through carbon units if desired. The stripper is equipped with a low air pressure shut down switch and high water level shutdown. The carbon units are equipped with a high-pressure shutdown switch.

The portable system is contained in a 16' enclosed, dual axle trailer. Upon arrival on site, the system can setup by one technician and be operational in less than one hour if suitable electrical service and water discharge points are available.

The entire system including control circuitry was designed and constructed by the principals and employees of Passaretti & Fina, thereby giving us a very thorough understanding of the capabilities and logic of the system.