Abstract: Pollutants are captured at a particular point of entrance into a storm water runoff system, such as at curb inlets. An inventive device takes advantage of existing storage volume within storm water inlets and is installed therein with little or no retrofitting necessary to secure the device. Storm water enters the apparatus where water energy is reduced and flow length is increased, increasing water detention time and allowing for the removal of soil sediment, floating debris, hydrocarbons and other pollutants utilizing settling tendencies and trapping areas. A damping system reduces pollutant resuspension and redirects high flows away from deposited sediment.