Erosion Control Toolbox

Toolbox Overview

Tools

To Combine Specifications

• Sequencing

Planning & Design

• Preserve Existing Vegetation

Improve Soil Health

• Soils Testing
• Local Topsoil
• Imported Topsoil
• Roughen Soil Surface
• Stepped Slopes
• Contour Grading and Slope Rounding
• Decompact Soil
• Soil Nutrients
• Compost (Incorporate)

Improve Soil Health & Provide Cover

• Duff
• Mulch
• Compost Blanket

Short Term Cover

• Hydroseed Overview
  • Seed
  • Fiber
  • Straw
  • Tackifier
• Punched Straw
• Hydroseed
• Bonded Fiber Matrix
• RECP (Jute Mesh)

Long Term Cover

• RECP (Netting)
• RECP (Blanket)
• RECP (Turf Reinforcing Mat)

Steep Slope Techniques

• Stepped Slope
• Cellular Confinement
• RECP Flap
• RECP Flap with Brush Layering
• RECP Wrap
• Soil Filled RSP
• Wire Blanket
• Wire Mesh Confinement

Planting

• Plant Selection
• TransPlant Application
• Noxious and Invasive Species
• Drill Seed
• Dry Seed
• Willow Cuttings
• Native Grass Sod
• Liner
• Seedling
• Brush Layering

Stormwater Treatment

• Biofiltration Strip
• Biofiltration Swale

Sediment Control

• Fiber Roll
• Compost Sock

References

• Webinars
• Guidance
• Research
• Presentations
• Magazine Articles
• Specifications by Others

Compost Sock

What is This Treatment?

Compost socks consist of tubular netting filled with compost.

Where to Use This Treatment?

Place on erodible slope faces at regular intervals, and at the slope top, toe, and at grade breaks, aligning compost socks with the slope contours.

Compost socks are typically spaced as follows:

• 10 feet apart for slopes steeper than 2:1 (horizontal:vertical)
• 15 feet apart for slopes from 2:1 to 4:1 (horizontal:vertical)
• 20 feet apart for slopes from 4:1 to 10:1 (horizontal:vertical)
• 50 feet apart for slopes flatter than 10:1 (horizontal:vertical)

For additional guidance, contact your District Stormwater Coordinator and the Storm Water Quality Handbook - Project Planning and Design Guide (May 2007).

Benefits:

• Reduces slope length.

• Reduces stormwater runoff volume and velocity.

• Intercepts runoff and releases it as sheet flow.

• Reduces the amount of sediment in runoff.

• Sock can be slit and removed at the end of the project leaving the compost in place to improve soil quality and provide for vigorous long term vegetation coverage.

Limitations:

• Some Regional Water Quality Boards may require compost socks to be setback from a water body 303d listed for nutrients.
• Sock must uniformly contact ground surface for maximum effectiveness.
• Difficult to install securely on steep or rocky slopes.
  

Specifications

• SSP 20-062 Compost Sock

Plans and Details:

• Compost Sock Standard Plan NSP H52 (Microstation format)
• Compost Sock Standard Plan NSP H52 (Acrobat format)

Estimate Information:

• Typically $5.50 - $7.50 per lineal foot (2009).
• Use BEES code 203023, Compost Sock.