The specialized Envibro^® System is manufactured and installed exclusively by Torrent Resources. This product is intended for applications where petroleum products are stored or dispensed while preventing environmental drainage catastrophes in the event of a fuel spill and is sized for flows up to 100 GPM (0.22 CFS). The design incorporates a pollution prevention feature which provides fail-safe protection to prevent organic compounds that are received by the system from contaminating groundwater.

Drainage flows are received into the Collector. This chamber has hydrophobic pillows filled with Imbiber Beads^® by Imbibitive Technologies Corp and is interconnected to the second component called the Primary Separator Chamber.

Inflow then passes to the Filtration Chamber, which also has hydrophobic pillows filled with Imbiber Beads and is equipped with Silt Filters to trap out fine particulate matter. The stormwater is then directed into the Imbibition Chamber, where it must pass through a drainage field of polymer beads prior to reaching the drywell. If no petroleum constituents are present, the water will pass freely through the drain beds of polymer beads into the drywell, where it will ultimately be recharged into the subsoils. However if active petroleum based organic liquids are present, the pollution prevention feature of the Envibro^® System will be automatically activated.

As the beads expand, a stop valve is formed within the bead bed that chokes off the flow and prevents the inflow from reaching the drywell. This protective feature requires no power source or human reaction for activation, and is entirely effective against groundwater pollution.