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

Soil Filled Rock Slope Protection (Nonstandard)

What is This Treatment?

This work consists of placing 1/4 ton Rock Slope Protection (RSP) on slopes, placing plants between the rocks, and backfilling with topsoil.

Note that placing RSP for the protection of steep slopes is different than placing RSP for river or shoreline protection, which is a hydraulic function. For information regarding using RSP to protect river and shorelines, please see Chapter 870 of the Highway Design Manual.

When to Use This Treatment?

• Use on slopes between 2:1 and 1.5:1 (H:V), when recommended by geotechnical engineers.
• Typically used to repair failed cut slopes.
• Also use to provide vegetative habitat, cover, or visual mitigation of cut slopes.

Benefits:

• Maintains slope stability and prevents surface erosion, even where slopes feature subsurface water flows.
• Vegetation softens the visual impact of rock slopes, provides habitat, helps meet Stormwater quality goals.
• Plant roots provide additional biotechnical reinforcement.

Limitations:

• Costly
• May require additional development time due to the need for close coordination between landscape architects and geotechnical engineers
• Requires room for accessibility by heavy equipment
• Planting of willows or other deep rooted plants requires placement of biodegradable plant tubes (for roots) at the same time as the rocks are being placed
• Plant installation may be limited to the rainy season or require supplemental irrigation to effectively establish plants

Consider Using With:

This treatment may also include the following work:

• Erosion Control (Hydroseed)
• Local Topsoil
• Imported Topsoil
• Compost
• Duff
• Willow Cuttings
• Seedling (Plant Group S)

Specifications:

• Caltrans Standard Specifications - Section 72 Slope Protection
• SSP 72-010 Slope Protection
• SSP 72-040 Slope Protection (Granular Material)
• SSP 72-150 Additional Clauses For Rock Slope Protection Filter Fabric

Plans and Details:

• No Standard Plans or Details are available as Soil Filled RSP is designed on a project-specific basis.

Estimate Information:

• No estimate information is available.