Filterra® Bioretention

Filterra is similar to bioretention in its function and application, but has been optimized for high volume/flow treatment and high pollutant removal. Its small footprint allows it to be used on highly developed sites such as landscaped areas, parking lots and streetscapes. Filterra is exceedingly adaptable and can be used alone or in combination with other BMPs.

Stormwater runoff enters the Filterra system through a curb-inlet opening or pipe and flows through a specially designed filter media mixture contained in a landscaped concrete container. The filter media captures and immobilizes pollutants; those pollutants are then decomposed, volatilized and incorporated into the biomass of the Filterra system’s micro/macro fauna and flora. Stormwater runoff flows through the media and into an underdrain system at the bottom of the container, where the treated water is discharged.

Filterra Features and Benefits

Features

High media flow rate (up to 175" per hour)

Third party field testing confirmed that Filterra meets state regulatory requirements for pollutant removal under TAPE and TARP testing

Filterra offers the most cost effective stormwater treatment system featuring low cost, easy installation and simple maintenance

Landscaping enhances the appearance of your site making it more attractive while removing pollutants

Available in multiple configurations and sizes

No confined space access, and activation is included with the purchase of every system

Benefits

Reduced footprint compared with traditional bioretention

Regulatory Compliance

Value

Adds aesthetic appeal to your site

Flexibility to meet site-specific needs

Simple and easy maintenance

Configurations

• Inline
• Offline
• Peak Diversion
• Bioscape Vault
• Filterra Bioscape
• Custom Configurations

At the heart of all Filterra systems is Filterra engineered media; a specified gradation of washed aggregate and organic material homogeneously blended under strict quality controlled conditions. Using data from studies conducted by the University of Virginia, the filter media has been optimized to operate under high flow rates (up to 175 inches/hour) while maintaining pollutant removal performance. Filterra media is tested for hydraulic functionality, fertility, and particle size distribution to ensure uniform performance.

Filterra is approved through numerous local, state, and federal verification programs, including:

• New Jersey Department of Environmental Protection (NJ DEP)
• Washington Department of Ecology (GULD) - Basic, Enhanced, Phosphorus, and Oil
• Maryland Department of the Environment - Environmental Site Design (ESD)
• Texas Commission on Environmental Quality (TCEQ)
• Virginia Department of Environmental Quality (VA DEQ)
• Maine Department of Environmental Protection (ME DEP)
• Atlanta, GA Regional Commission
• Los Angeles County, CA - Alternate to Attachment H
• City of Portland, Oregon Bureau of Environmental Services
• North Carolina Department of Environmental Quality (NC DEQ)

• Low Impact Development, Green Infrastructure, and Environmental Site Design
• High pollutant removal requirements
• New construction and urban retrofits
• Pretreatment for above-ground or shallow below-ground storage
• Shallow, decentralized treatment

We make it easy for you...

• Vegetation selection guidance based on your climate zone.
• On-site planting and activation included with every system.
• No confined space access, and activation is included with the purchase of every system
• Ongoing maintenance is simple.
  • Clean biofiltration bay with simple landscape tools (rake and shovel).
• No confined space entry required.
  • Everything can be accessed from the surface.

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