BEsT MANAGEMENT PRACTICEs HANDbooK - Tahoe BMP

4.5.2.3 FIBER ROLLAlternative Names: Fiber Roll Barriers, Sediment Log, Coir Roll and Coir LogDESCRIPTIONFiber rolls are sediment control devices made from fibrous organic material,such as rice or coconut fibers, rolled inside a tubular mesh sock. A fiber rollmay also be constructed by tightly rolling an erosion control blanket to form amulti-layer roll. Fiber rolls help reduce overland flow velocities by interruptingand intercepting runoff and capturing sediment on steep slope settings. Placingmultiple strings of fiber rolls in a system along the contours of a slope providea benefit by helping interrupt overland flow and intercepting sediment loadsbefore they migrate to receiving surface waters.SITE SUITABILITY• Along the toe, top, face, and at grade breaks of exposed and erodible slopes.• Along sidewalks and curbs to prevent sediment from washing into streetsand gutters.• As check dams in unlined ditches.• Around storm drains and drain inlets.• Downslope of exposed soil areas.• Around temporary material spoil and stockpiles, such as topsoil stockpiles(refer to Section 4.5.1.14 Stockpile Management).• On sloped pavements leading to a street, storm drain, or water course.Advantages• They can be easily molded to fit undulating terrain.• As inlet protection, fiber rolls can prevent sediment from entering stormdrain systems during periods of low runoff.• Easy to install, recyclable, and movable to different locations.• Available in a variety of diameters and lengths.• More effective and durable than sand bags.• The rolls are less visually obtrusive than other erosion and sedimentcontrols, such as silt fencing.• Fiber rolls can be used to help establish permanent vegetation.BMP DESIGN APPROACHPollutant SourceControlHydrologic SourceControlStormwaterTreatmentSCALE OF APPLICATIONAll SFR and MFR < 1acreMFR 1-5 Acre andCICU < 5 acresMFR and CICU > 5acres and all WQIPsTYPE OF APPLICATIONTemporaryPermanentDisadvantages• Not effective during periods of high runoff, and not effective forchannels.• The volume of sediment that can be captured is small; once the areabehind the fiber roll fills with sediment, runoff may allow sediment toflow over the roll.TRPA BMP HandbookChapter 4: BMP Toolkit2012 4.5.2.3-Fiber RollPage 1