Public Works has installed a device similar to this in the Crab Creek out fall storm drain system. The device should help prevent catastrophic tidal flooding from storms like Nor ‘Ida in 2009, over ~$150,000 worth of damage, and Irene in 2011. The pneumatic plug device is a temporary solution. The permanent solution is the plan to move the Crab Creek out fall line to the pump station late in 2012.