Page 18 - Section4.1.1-SWPPPCutSheet-FiltrexxSedimentControl

Construction Activities | Section 1: Erosion & Sediment Control | 341

SWPPP Cut Sheet:

PURPOSE & DESCRIPTION

Filtrexx ® Slope interruption is a three-dimensional tubular runoff and erosion control device used for

slope interruption and slope length reduction on hill slopes prior to fnal stabilization during construction activities. Filtrexx ® Slope interruption slow runoff velocity and reduce soil erosion by dissipating the energy of overland sheet fow runoff, reducing its erosive potential, while also trapping moving sediment and soluble pollutants. Reducing runoff velocity reduces the potential of rill erosion formation on hill slopes. Slope interruption trap sediment and soluble pollutants by fltering runoff water as it passes through the matrix of the Slope interruption and by allowing water to temporarily pond behind the Soxx tm , allowing deposition of suspended solids.

APPLICATION

Filtrexx ® Slope interruption is to be installed horizontally across the contour of hill slopes, perpendicular to sheet fow, where erosion control practices are required or runoff velocity control is recommended. Slope interruption is most effective where runoff is in the form of sheet fow and on long slopes prone to rill erosion. Slope interruption also provides sediment control and fltration of soluble pollutants from runoff. Slope interruption can be applied to areas of high sheet runoff and erosion, and slopes up to a 1:1 grade. Slope interruption should never be the only form of slope erosion control and should be used in conjunction with compost erosion control blankets (CECB) or rolled erosion control

Filtrexx ® Slope Interruption

Runoff & Erosion Control Technology

blankets (RECB). Slope interruption may also be used in sensitive environmental areas, where wildlife migration may be impeded by the use of silt fences or trenching may damage plant roots.

Vegetated Slope interruption:

For permanent control of runoff velocity, Slope interruption can be direct-seeded to allow vegetation establishment directly in the device. Extending the vegetation 5 ft (1.5m) upslope and down slope from the device, can further increase performance. Vegetation on and around the Slope interruption will assist in slowing runoff velocity for increased deposition and fltration of pollutants. Additionally, the reduction of runoff velocity may increase the stability and sustainability of plant establishment and growth where runoff is prone to destabilize vegetation. The option of adding vegetation will be at the discretion of the Engineer. No additional soil amendments or fertilizer are required for vegetation establishment in the Slope interruption.

INSTALLATION

1. Slope interruption used for hill slope runoff velocity and erosion control, and removal of sediment and soluble pollutants in storm runoff shall meet Filtrexx ® FilterSoxx tm Material Specifcations and use Certifed Filtrexx ® FilterMedia tm .

2. Contractor is required to be a Filtrexx ® Certifed tm Installer as determined by Filtrexx ® International, LLC (440-926-2607 or visit website at Filtrexx.com). Certifcation shall be considered

Section 1: Erosion & Sediment Control – Construction Activities