Patent ID: 8501016

Claim:
A storm water pretreatment chamber comprising; one or more filter sidewalls; one or more water-impermeable sidewalls each independently connected to the one or more filter sidewalls; wherein the one or more filter sidewalls and the one or more water-impermeable sidewalls form a debris and sediment trap, wherein the one or more filter sidewalls are each in communication with the atmosphere and in position to release treated storm water from the debris and sediment trap into one or more storm water receiving features; one or more chamber grates each having a first surface and a second surface, wherein each second surface of the one or more chamber grates is on or connected with the one or more filter sidewalls or the one or more filter sidewalls and the one or more water-impermeable sidewalls, wherein the one or more chamber grates are in communication with the atmosphere and in position to receive untreated storm water and to collect one or more floating debris that does not pass through the one or more chamber grates; and one or more catch rails each independently connected to the one or more filter sidewalls or the one or more water-impermeable sidewalls to form an open top in the storm water pretreatment chamber, wherein the one or more catch rails are configured to provide one or more openings directed away from the one or more storm water receiving features, wherein the one or more catch rails each independently catch the one or more floating debris, wherein the one or more catch rails are positioned above a level of one or more storm water conveyances; wherein the open top in the storm water pretreatment chamber is positioned below the level of the one or more storm water conveyances, wherein the storm water pretreatment chamber has an opening between the one or more filter sidewalls, the one or more catch rails, and the one or more chamber grates that enables storm water to flow out of the debris and sediment trap and into the one or more storm water receiving features when the one or more filter sidewalls is clogged.