Patent ID: 6939461

Claim:
A trap for separating pollutants from a liquid, comprising: a chamber having an inlet, an outlet, a floor, a maximum liquid level when the liquid is flowing through the chamber at a predetermined maximum water flow rate, and an at-rest liquid level when none of the liquid is flowing into the chamber; and a collection reservoir disposed in the chamber between the inlet and the outlet, wherein the collection reservoir has a bottom wall and a front wall, the front wall has a skimming edge disposed at the maximum liquid level to skim floating portions of the pollutants into the collection reservoir, and the front wall skimming edge is disposed above the at-rest liquid level and the bottom wall is disposed above the chamber floor to direct the liquid to flow under the collection reservoir in a longer flow route through the chamber and to prevent the liquid from flowing into the collection reservoir, and wherein the collection reservoir comprises a maintenance opening and plug assembly at or above the at-rest liquid level and below the skimming edge.