SITE PREPARATION
(These notes are compiled from AGS)
SITE EARTHWORK
SLOPE PROTECTION AND EROSION CONTROL
- Slope protection and erosion control is required when steep slopes are subject to erosion from stormwater runoff or flowing streams.
- Erosion can damage the site and pollute waterways with sediment.
- The need for mechanical stabilization can be reduced through careful site gradings that divert or slow the velocity of runoff and by avoiding disturbances to stable, natural streambanks, wetlands or floodplains.
- Numerous proprietary products are available for streambank stabilization and erosion control, so consult manufacturers.
- Follow these general design guidelines:
- Control erosion during construction with silt fences, straw bales, sediment ponds, and seeding and mulching. Adhere to local and state guidelines and regulations.
- Line channels with erosion-resistant material (sod, stone riprap, erosion-control blanket). Channel dimensions and lining should be designed for expected runoff.
- At the bottom of the slope drain channel, convey the flow to a storm sewer, detention pond, constructed wetland, or other control method that meets regulations.
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