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Sediment Control Practices <br /> Erosion control and sediment control are interconnected and typically principles meant to <br /> 7 <br /> reduce erosion also reduce sediment movement. Implementing restoration activities as soon <br /> as possible after ground disturbance can eliminate or reduce the need to use sediment control <br /> barriers like perimeter barriers and silt fences, which lead to project cost savings. <br /> The basic sediment control principles are similar to those meant to minimize erosion: <br /> • Apply perimeter control BMPs BEFORE construction begins, <br /> • Adequately protect storm water and sewer inlets to prevent soil loss; <br /> • Use BMPs to reduce the movement of disturbed sediment; <br /> • Conduct regular follow-up visits after active construction is completed to ensure the site <br /> is stabilized with vegetation. <br /> Specific Sediment Control BMPs include the following: <br /> VEGETATED BUFFERS (T-OHD-MSC-0 2 4.0001 <br /> • Existing grassy vegetation should be maintained to the extent practicable to provide <br /> treatment of runoff leaving the construction site. <br /> • Vegetative buffers should not be used if there is snow cover or if the vegetation is dead. <br /> • Existing vegetation should be preserved around environmentally sensitive areas to <br /> prevent sediment discharge from entering the area. <br /> TRACKING PADS <br /> • Tracking pads should be utilized at construction access points from roadways. <br /> • Sediment tracked onto the roadway should be removed at the end of each day, unless <br /> weather or working conditions dictate otherwise. <br /> SILT FENCING (T-OHD-MSC-025.0001 <br /> • Silt fencing should be used to shorten slope length but is not suitable for use in channels.7 <br /> • It may be used as a perimeter control to prevent sediment from entering <br /> environmentally sensitive areas. <br /> PERIMETER SEDIMENT BARRIER(T-OHD-MSC-026.0001 <br /> • Perimeter sediment barriers may be used in place of silt fences when correct trenching <br /> installation of silt fences is not possible (i.e. when the ground is frozen). <br /> • Perimeter sediment barriers may be used to shorten slope lengths and to prevent sediment <br /> discharge to environmentally sensitive areas. <br /> TEMPORARY DITCH CHECK (T-OHD-MSC-027.0001 <br /> • Temporary ditch checks should be used in ditches or channels to reduce flow length <br /> and trap sediment. <br /> ENV EF 27 <br /> See on-line version for current revisions. <br /> Page 7 of 8 Revision Date: 06/22/09 <br />