conservation strategies for growing communities
DESCRIPTION
Conservation Strategies for Growing Communities. The Growth of Urban Conservation. National Pollutant Discharge Elimination System (NPDES) Nonpoint Source Pollution (NPS) Storm Water Regulations NPDES Phase II. What the Law Requires. Soil Erosion & Sediment Control Planning. - PowerPoint PPT PresentationTRANSCRIPT
Conservation Strategies for Growing Communities
The Growth of Urban Conservation
What the Law Requires
• National Pollutant Discharge Elimination System (NPDES)
• Nonpoint Source Pollution (NPS)
• Storm Water Regulations
• NPDES Phase II
Soil Erosion & Sediment Control Planning
• Minimize clearing and grading• Phase essential grading to limit soil exposure• Immediately stabilize exposed soils• Protect steep slopes and cuts• Protect and stabilize drainageways• Install perimeter controls to keep sediment on-site• Train contractors on SWPPP implementation• Inspect SWPPP practices after storms and perform needed
maintenance• Adjust the plan once construction has started, if needed
Soil Erosion
Wind Erosion
Stream Bank Erosion Gully Erosion
Sheet & Rill Erosion
Erosion Control Practices
• Compost Blankets• Grading Strategies• Mulching• Rolled Erosion
Control Products• Vegetative
Establishment
Compost Blanket on a storm water detention basin.
Compost Blankets
Applying compost and seed with a pneumatic blower truck
Compost Blankets control erosion until seeding is
established
Grading Strategies
Design developments to fit the existing landscape.
Mulching
Applying Straw Mulch
Mulching limits soil erosion, lessens the need to contain sediment and enhances water quality.
Rolled Erosion Control Products (RECP’s)
Coconut Fiber Matting
RECP’s are especially effective at controlling erosion on severe slopes or areas of concentrated flows.
Vegetative Establishment
Establishing vegetative cover is the best way to control erosion.
Sediment Control Practices• Compost Filter Berms• Compost Socks• Filter Strips• GeoRidge™• Inlet Protection Devices• Rock Check Dams• Sediment Control Basins• Silt Fences Rock Check Dams add water quality protection by
temporarily impounding runoff from frequent, low
intensity rainfalls.
Compost Filter Berms
Compost Filter Berms improve water quality by absorbing pollutants.
Compost Socks
Compost Socks should be placed on the contour across slopes to intercept and treat sheet flows.
Filter Strips
Filter Strips should be left permanent to protect urban streams, ponds and wetlands.
GeoRidge™
GeoRidge™ complements the performance of erosion control blankets on channels and slopes.
Inlet Protection
Inlet Protection Devices trap and filter sediment before entering storm sewer inlets.
Rock Check Dams
Rock Check Dams prevent gully erosion caused by concentrated flow.
Sediment Control Basins
Maximizing the amount of time water is impounded increases the amount of sediment retained on site.
Silt Fences
Silt Fences temporarily impound runoff and retain sediment on-site, often as
perimeter control.
Storm Water Management-Low Impact Development (LID)
• Bioretention Cells• Bioswales• Infiltration Trenches• Native Landscaping• Permeable Paving
Alternatives• Rain Gardens• Soil Quality
Restoration Bioretention Cells manage runoff from impervious surfaces.
Bioretention Cells
Bioretention Cells are shallow, landscaped depressions that can handle large volumes of runoff.
Bioswales
Bioswales are vegetated conveyance systems that provide an alternative to storm sewers.
Infiltration Trenches
Infiltration Trenches are excavated trenches filled with a coarse stone aggregate and biologically active organic matter.
Native Landscaping
Fall Colors
Summer Colors
High organic matter in native plants helps soil hold water like a sponge and infiltrate most rain.
Permeable Paving Alternatives
Impervious surfaces that allow water to infiltrate.
Rain Gardens
Perennial gardens featuring native vegetation strategically located to capture runoff.
Soil Health Restoration
Key to restoring soil quality is reducing soil compaction and increasing organic matter content.
Final Thoughts• Design Standards & Specifications• Illinois Urban Manual
Helpful Websites:www.il.nrcs.usda.gov
www.urbanwaterquality.orgwww.epa.gov
www.aiswcd.orgwww.lowimpactdevelopment.org
www.stormwatercenter.netwww.greeninfrastructure.net
www.rmi.org
• Environmental Protection Agency (EPA)• Association of Illinois Soil and Water Conservation Districts• IL Army Corps of Engineers• Illinois Department of Natural Resources (DNR)• Prairie Rivers Network
Developed in cooperation with:
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