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Sediment Control Practices

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Sediment Control Practices

Silt Fence

silt-fence
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A Silt fence is a perimeter control device used to temporarily manage sediment at construction sites. It is made of a thick network of fabric installed in the direction of water flow within the construction area. Silt fences are easy and inexpensive to design and install. Once installed, a silt fence prevents the movement of sediments from disturbed areas into nearby waterways. It can also restrict the movement of construction site waste materials in stormwater runoff from getting into waterways or waterbodies, thus reducing soil erosion in the process. However, silt fences need regular maintenance in order to ensure its effectiveness.

Fact Sheets

Stormwater Best Management Practice, Silt Fences, United State Environmental Protection Agency

Silt Fence, Town of Truckee California

Silt Fence/Other Sediment Barriers(Perimeter Protection), Corinna Township, Minnesota

Silt Fence, California Stormwater Quality Association

Silt Fence, City of Knoxville, Tennessee

Silt Fence, Laramie County Conservation District Wyoming

Silt Fence, Tahoe Regional Planning Agency BMP Handbook, Tahoe Regional Planning Agency Nevada

Silt Fence, Caltrans California

Silt Fence, Colorado Spring

Earth Series, Erosion and Sediment Control, Silt Fence, Waikato Regional Council, New Zealand

Sediment Pond

sediment-pond
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Sediment from construction ponds can greatly affects waterbodies and its life forms. It is therefore very important to prevent sediment from moving into waterways, by trapping it at the source and   using sediment ponds. Sediment ponds are temporarily designed structure that prevent sediments from eroding into waterbodies from construction sites or exposed soil during rainfall events. This sediment control design is relatively easy to construct and cost effective. Once properly designed, sediment ponds captures stormwater runoff and sediments, manage soil erosion, and protect water quality. However, proper maintenance including inspection and removal of excess sediment will improve the efficiency of the pond.

Fact Sheets

Sediment Basin, Urban Drainage and Flood Control District, Denver Colorado

Sediment Basin, Hamilton County Ohio

Sediment Basin/Desilting Basin, City of Villa Park, Orange County California

Sediment Detention Basin, Bowling Green, Kentucky

Sediment Trap, Caltrans California

Settling Ponds, Catchment and Creek Pty Ltd Australia

Sediment Trench, Catchment and Creek Pty Ltd Australia

Sediment Basin, Catchment and Creek Pty Ltd Australia

Sediment Basins, International Erosion Control Association Australasia

Handbooks/Manuals

Sediment Retention Ponds, Waikato Regional Council New Zealand

Sediment Basin, International Erosion Control Association, Australasia

Sediment Basin, Brisbane City Australia

Wattles

wattle
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Wattles are materials designed and installed to control sediment at construction sites, thus preventing sediments from moving into waterbodies or waterways. Proper installation of wattles can reduce the rate of soil erosion, control sediment on site, reduce stormwater runoff velocity, and also promote water quality.

 

Fact Sheets

Wattles, Stormwater Design and Specifications, Iowa State Urban Design and Specification

Wattles, South Dakota Department of Transportation

Fiber Rolls, Caltrans California

Fiber Rolls, Tahoe Regional Planning Agency Nevada

Fiber Rolls, Caltrans California

Sediment Control Log, Urban Drainage and Flood Control District, Denver Colorado

Handbooks/Manuals

Videos

Sediment Retention Fiber rolls (wattles) General Usage and Installation, Erosion Control Technology Council, Austin Texas

Proper Wattle Installation, Coconino County Arizona

Stormwater BMPs, Fiber Rolls County of San Diego Watershed Protection Program

Stormwater Strategies, How to Install Fiber RollsCounty of San Diego Watershed Protection Program

Inlet Protection

inlet-protection
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Sediment accumulating in storm drain inlets can wreak havok on the stormwater systems. Thus, it is very important to filter sediment before it enters the drains using permeable barriers made from rock socks, sediment control logs, silt fence or other material.

Fact Sheets

Stormwater Drain Inlet Protection, Dyersburg Dyer County, Tennessee

Storm Drain Inlet Protection, Caltrans California

Standard and specification for Storm Drain Inlet Protection, New York State

Block And Gravel Inlet Protection, Mississippi Department of Environmental Quality

Fabric Drop Inlet Protection, Department of Environment, Health and Natural Resources, North Carolina

Temporary Inlet Protection, City of Knoxvile Tennessee

Inlet Protection, Urban Drainage and Flood Control District, Denver Colorado

Inlet Protection, Idaho Department of Environmental Quality

Inlet Protection, Statewide Urban Design and Specification, Iowa

Inlet Protection, City of South Lake Tahoe California

BMPs, Inlet Protection, Concrete Block, LEHI Utah

BMPs, Inlet Protection, Excavated, City of American Fork, Utah

Inlet Protection, Lake County Soil and Water Conservation District Ohio

Inlet Protection, Chattanooga, Hamilton County Tennessee

Kerb Inlet Sediment Traps, Sag Inlet, Catchment and Creeks Pty Ltd Australia

Fabric Wrap Drop Inlet Protection, Catchment and Creek Pty Ltd Australia

Stormwater Inlet Sediment Traps, Catchment and Creek Pty Ltd Australia

Handbooks/Manual

Inlet Protection, North Carolina Department of Transportation

Videos

Inlet Protection Minnesota Erosion and Sediment Control Association

Inlet Protection, Test Channel Flow Introduction, Auburn University

Inlet Protection

Sand Bag Inlet Protection

Check Dams

check-dam
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Check dams are temporary structures designed across drainage systems, ditches and swales to control stormwater runoff, prevent erosion, traps sediment, and prevent it from passing through the dam. Check dams are mostly constructed using rocks, sediment retention fiber rolls, stones, sand and gravel bags. Once a check dam is properly installed, it reduces the velocity of runoff, prevents erosion and ensures sedimentation.

Fact Sheets on Check Dams

Check Dams, Urban Drainage and Flood Control District, Denver Colorado

Check Dams, Metropolitan Council/Barr Engineering Co. Minnesota try:

Check Dams, Colorado Spring

Check Dams, Clark County Washington

Check Dams, Caltrans California

Check Dams, Auckland Regional Council Australia

Check Dam, Sediment Traps, Catchment and Creek Pty Ltd Australia

Fact Sheets on Artificial Berms

Sand and Gravel Bag Berm, South Dakota Department of Transportation

Sandbag Barrier, City of Concord California

Mulch Filter Socks, South Dakota Department Of Transportation

Triangular Silt Barrier, South Dakota Department of Transportation

Flocculation

flocculation
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Flocculation is the process where multiple particles are bridged together to form flocs or flakes. Flocculants added to stormwater runoff during flocculation the process enhance the binding effect of multiple particles to each other, thereby improving the size and particle settling velocity. Flocculants are characterized as both natural and synthetic in nature. Natural flocculants include: glues, gum, and starch. Synthetic flocculants include polyacrylamide monomer. Flocculation allows sediments to settle and controls turbidity at construction sites.