The Ultra-Drainguard keeps sediment and other pollutants from entering the water system with Ultra-Drainguard catch basin inserts. The oil and sediment model( Part # 9217) removes up to .87 gallons of hydrocarbons as well as dirt, sand and other contaminants. The oil and sediment plus model (Part # 9219) has the addition of X-Tex filter strips that increase oil and grease absorption by .51 gallons, offering a total capacity of 1.38 gallons of hydrocarbon removal. The trash and debris model (Part # 9227) is designed specifically to catch larger items and floatables such as leaves, cigarette butts and paper goods. Helps comply with NPDES, 40 CFR 122.26 (1999). designed for practical use in construction sites, parking lots and “drive-up” retail facilities.