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Fiber Rolls Definition and A fiber roll consists of wood excelsior, rice or wheat straw, or coconut fibers that is Purpose rolled or bound into a tight tubular roll and placed on the toe and face of slopes to intercept runoff, reduce its flow velocity, release the runoff as sheet flow and provide removal of sediment from the runoff. Fiber rolls may also be used for inlet protection and as check dams under certain situations. Appropriate ■ This BMP may be implemented on a project-by-project basis with other BMPs Applications when determined necessary and feasible by the RE. In Along the toe, top, face, and at grade breaks of exposed and erodible slopes to shorten slope length and spread runoff as sheet flow. ■ Below the toe of exposed and erodible slopes. ■ Fiber rolls may be used as check dams in unlined ditches if approved by the Resident Engineer(RE) or the District Construction Storm Water Coordinator (refer to SC-4 "Check Dams"). a Fiber rolls may be used for drain inlet protection if approved by the RE or the District Construction Storm Water Coordinator(refer to SC-10 "Storm Drain Inlet Protection"). ■ Down-slope of exposed soil areas. ■ Around temporary stockpiles. ■ Along the perimeter of a project. Limitations ■ Runoff and erosion may occur if fiber roll is not adequately trenched in. M Fiber rolls at the toe of slopes greater than 1:5 may require the use of 500 mm (20" diameter) or installations achievin th a t ion (i.e., stacked smaller diameter fiber Is Wes ■ Fiber 1 us . r n nle prot ti ey an be properly ancho a Diff] t ce SWIM tea. a Fiber rolls could be transported by high flows if not properly staked and trenched in. Fiber rolls have limited sediment capture zone. ■ Do not use fiber rolls on slopes subject to creep, slumping, or landslide. Standards and Fiber Roll Materials Specifications a Fiber rolls shall be either: (1) Prefabricated rolls. (2) Rolled tubes of erosion control blanket. Page 3 of 4