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Construction Activities | Section 1: Erosion & Sediment Control | 337

SWPPP Cut Sheet:

Filtrexx ® Concrete Washout

Sediment & Pollution Control Technology

PURPOSE & DESCRIPTION

Filtrexx ® Concrete washouts are a three-dimensional tubular solids separation and water pollutant fltration device used for temporary, passive fltration of sediment-laden effuent & point sources of contaminated water. Filtrexx ® Concrete washouts can be used as a pretreatment fltration system to separate solids/reduce solids content of contaminated water.

APPLICATION

Filtrexx ® Concrete washouts are used in temporary applications where unfltered slurry or effuent may adversely affect surface water quality. Applications include:

•Concrete wash-off and wash-out from equipment and trucks.

•Pumping of surface water to allow access to stream banks for stabilization projects.

•Sediment and storm water pond emergency overfow capture and fltration. •Dredging slurry fltration.

•Animal manure and lagoon slurry fltration at concentrated animal feeding operation (CAFO) sites. •Non-hazardous industrial effuent and slurry solids separation from point sources.

Concrete washouts require adequate site drainage space to allow water to percolate through the Concrete washout and drain away from the device, leaving the solid fraction or fltrate within the device. After the water has been separated, the solid portion can be removed with a loader and disposed or land applied, depending upon the constituents within the fltrate. On sites with highly permeable soils, high

water tables, or if constituents in unfltered water may contaminate soil or ground water, an impervious mat or membrane may be placed underneath the Concrete washout to prevent soil infltration and percolation of contaminated water. Passively dewatering solids-laden water prior to hauling and disposal can signifcantly reduce handling and disposal costs.

INSTALLATION

1. Concrete washouts used for solids separation and fltration of soluble pollutants from contaminated water 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 current if appropriate identifcation is shown during time of bid or at time of application (current list of installers can be found at www.fltrexx.com). Look for the Filtrexx ® Certifed tm Installer Seal.

3. Filtrexx ® Concrete washouts shall be placed at locations indicated on plans as directed/specifed by the Engineer. Concrete washouts should be installed in a manner that effectively flters solids and soluble pollutants from contaminated water.

4. Concrete washouts may be manufactured on-site at time of application or pre-manufactured and delivered to site for installation.

5. Installation of Concrete washouts shall ensure that the containment area within the Concrete washout is suffcient to handle the rate and volume of infuent water.

Section 1: Erosion & Sediment Control – Construction Activities