BEsT MANAGEMENT PRACTICEs HANDbooK - Tahoe BMP

4.4.2.2 TRASH RACKAlternate Names: Trash Grate, Safety GrateDESCRIPTIONA trash rack is a grate-like structure attached to culvert inlets and outlets andriser outlets. Trash racks prevent trash and other large objects from enteringand clogging the culvert or subsequent downstream areas. Trash and debris thatare blocked by the trash rack will accumulate in the surrounding area, whichallows for easy collection at a centralized collection point.BMP DESIGN APPROACHPollutant SourceControlHydrologic SourceControlStormwaterTreatmentSCALE OF APPLICATIONAll SFR and MFR < 1acreMFR 1-5 Acre andCICU < 5 acresMFR and CICU > 5acres and all WQIPsTYPE OF APPLICATIONTemporaryPermanentThis trash rack will prevent trash from entering the stand pipe in the basin.APPLICABILITYApplicable in areas where clogging of inlets with trash and debris and publicsafety are concerns.Advantages• Prevents trash, debris, and other large objects from entering culverts.• Increases public safety by preventing humans and animals from enteringculverts.• Can reduce the long-term maintenance requirements of culverts anddownstream BMPs.Disadvantages• Trash racks routinely become blocked with sediment and debris, requiringregular maintenance to ensure adequate conveyance and hydraulic capacityof the conduit during storm events. If the trash rack is not routinelymaintained, the hydraulic capacity may be reduced by the debris and trashclogging the culvert.TRPA BMP HandbookChapter 4: BMP Toolkit2012 4.4.2.2-Trash RackPage 1