Installing large, vertical vault stormwater filtration devices in relatively flat terrain with minimal elevation fall has always been difficult.When faced with that problem in a large, mixed-use development in Southern California, Katchall Stormwater Filtration Systems LLC used a Jensen Precast vault and developed the Kleerstream antimicrobial filtration chamber, a shallow-draft, reinforced concrete unit that requires less excavation, accommodates minimal elevation differences, and eliminates bacteria and viruses under flowing stormwater conditions. “In a conventional filtration device, the inlet and outlet pipe elevations are usually at least two to three feet apart,” notes Kip Searcy, CEO. “With the Kleerstream unit, the elevations
